debug.c revision 942eaabd5d77522223a311ed9bddaaa3cefde27d
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * arch/s390/kernel/debug.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * S/390 debug facility 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH, 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IBM Corporation 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Author(s): Michael Holzheu (holzheu@de.ibm.com), 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Holger Smolinski (Holger.Smolinski@de.ibm.com) 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bugreports to: <Linux390@de.ibm.com> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/config.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/stddef.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ctype.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sysctl.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/semaphore.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 2466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu#include <linux/fs.h> 2566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu#include <linux/debugfs.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/debug.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_PROLOG_ENTRY -1 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu#define ALL_AREAS 0 /* copy all debug areas */ 3266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu#define NO_AREAS 1 /* copy no debug areas */ 3366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* typedefs */ 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct file_private_info { 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loff_t offset; /* offset of last read in file */ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int act_area; /* number of last formated area */ 3966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int act_page; /* act page in given area */ 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int act_entry; /* last formated entry (offset */ 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* relative to beginning of last */ 4266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* formated page) */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t act_entry_offset; /* up to this offset we copied */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* in last read the last formated */ 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* entry to userland */ 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char temp_buf[2048]; /* buffer for output */ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t *debug_info_org; /* original debug information */ 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t *debug_info_snap; /* snapshot of debug information */ 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct debug_view *view; /* used view of debug info */ 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} file_private_info_t; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstypedef struct 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *string; 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This assumes that all args are converted into longs 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on L/390 this is the case for all types of parameter 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * except of floats, and long long (32 bit) 5966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * 6066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds long args[0]; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} debug_sprintf_entry_t; 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 65942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheuextern void tod_to_timeval(uint64_t todval, struct timespec *xtime); 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* internal function prototyes */ 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_init(void); 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t debug_output(struct file *file, char __user *user_buf, 7166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_len, loff_t * offset); 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t debug_input(struct file *file, const char __user *user_buf, 7366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_len, loff_t * offset); 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_open(struct inode *inode, struct file *file); 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_close(struct inode *inode, struct file *file); 7666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic debug_info_t* debug_info_create(char *name, int pages_per_area, 7766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int nr_areas, int buf_size); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void debug_info_get(debug_info_t *); 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void debug_info_put(debug_info_t *); 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_prolog_level_fn(debug_info_t * id, 8166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct debug_view *view, char *out_buf); 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_input_level_fn(debug_info_t * id, struct debug_view *view, 8366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 8466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_buf_size, loff_t * offset); 8566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int debug_prolog_pages_fn(debug_info_t * id, 8666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct debug_view *view, char *out_buf); 8766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int debug_input_pages_fn(debug_info_t * id, struct debug_view *view, 8866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 8966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_buf_size, loff_t * offset); 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_input_flush_fn(debug_info_t * id, struct debug_view *view, 9166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 9266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_buf_size, loff_t * offset); 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view, 9466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *out_buf, const char *in_buf); 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_raw_format_fn(debug_info_t * id, 9666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct debug_view *view, char *out_buf, 9766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu const char *in_buf); 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_raw_header_fn(debug_info_t * id, struct debug_view *view, 9966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int area, debug_entry_t * entry, char *out_buf); 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_sprintf_format_fn(debug_info_t * id, struct debug_view *view, 10266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *out_buf, debug_sprintf_entry_t *curr_event); 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* globals */ 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct debug_view debug_raw_view = { 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "raw", 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_raw_header_fn, 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_raw_format_fn, 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct debug_view debug_hex_ascii_view = { 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hex_ascii", 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_dflt_header_fn, 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_hex_ascii_format_fn, 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct debug_view debug_level_view = { 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "level", 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_prolog_level_fn, 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_input_level_fn, 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustruct debug_view debug_pages_view = { 13466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu "pages", 13566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu &debug_prolog_pages_fn, 13666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu NULL, 13766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu NULL, 13866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu &debug_input_pages_fn, 13966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu NULL 14066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu}; 14166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct debug_view debug_flush_view = { 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "flush", 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_input_flush_fn, 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct debug_view debug_sprintf_view = { 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "sprintf", 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &debug_dflt_header_fn, 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (debug_format_proc_t*)&debug_sprintf_format_fn, 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned int debug_feature_version = __DEBUG_FEATURE_VERSION; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* static globals */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic debug_info_t *debug_area_first = NULL; 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic debug_info_t *debug_area_last = NULL; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsDECLARE_MUTEX(debug_lock); 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int initialized; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct file_operations debug_file_ops = { 17266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu .owner = THIS_MODULE, 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read = debug_output, 17466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu .write = debug_input, 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = debug_open, 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release = debug_close, 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic struct dentry *debug_debugfs_root_entry; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* functions */ 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 18466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * debug_areas_alloc 18566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * - Debug areas are implemented as a threedimensonal array: 18666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * areas[areanumber][pagenumber][pageoffset] 18766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 18866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 18966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic debug_entry_t*** 19066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_areas_alloc(int pages_per_area, int nr_areas) 19166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 19266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_entry_t*** areas; 19366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int i,j; 19466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 19566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu areas = (debug_entry_t ***) kmalloc(nr_areas * 19666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu sizeof(debug_entry_t**), 19766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu GFP_KERNEL); 19866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!areas) 19966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_areas; 20066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for (i = 0; i < nr_areas; i++) { 20166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu areas[i] = (debug_entry_t**) kmalloc(pages_per_area * 20266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu sizeof(debug_entry_t*),GFP_KERNEL); 20366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!areas[i]) { 20466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_areas2; 20566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 20666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j = 0; j < pages_per_area; j++) { 20766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu areas[i][j] = (debug_entry_t*)kmalloc(PAGE_SIZE, 20866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu GFP_KERNEL); 20966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!areas[i][j]) { 21066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j--; j >=0 ; j--) { 21166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(areas[i][j]); 21266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 21366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(areas[i]); 21466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_areas2; 21566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 21666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(areas[i][j],0,PAGE_SIZE); 21766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 21866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 21966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 22066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return areas; 22166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 22266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufail_malloc_areas2: 22366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(i--; i >= 0; i--){ 22466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j=0; j < pages_per_area;j++){ 22566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(areas[i][j]); 22666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 22766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(areas[i]); 22866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 22966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(areas); 23066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufail_malloc_areas: 23166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return NULL; 23266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 23366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 23466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 23566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 23666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu/* 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_info_alloc 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - alloc new debug-info 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic debug_info_t* 24266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_alloc(char *name, int pages_per_area, int nr_areas, int buf_size, 24366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int level, int mode) 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t* rc; 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* alloc everything */ 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = (debug_info_t*) kmalloc(sizeof(debug_info_t), GFP_KERNEL); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!rc) 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail_malloc_rc; 25266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->active_entries = (int*)kmalloc(nr_areas * sizeof(int), GFP_KERNEL); 25366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!rc->active_entries) 25466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_active_entries; 25566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(rc->active_entries, 0, nr_areas * sizeof(int)); 25666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->active_pages = (int*)kmalloc(nr_areas * sizeof(int), GFP_KERNEL); 25766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!rc->active_pages) 25866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_active_pages; 25966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(rc->active_pages, 0, nr_areas * sizeof(int)); 26066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if((mode == ALL_AREAS) && (pages_per_area != 0)){ 26166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->areas = debug_areas_alloc(pages_per_area, nr_areas); 26266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!rc->areas) 26366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto fail_malloc_areas; 26466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 26566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->areas = NULL; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialize members */ 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&rc->lock); 27166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->pages_per_area = pages_per_area; 27266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->nr_areas = nr_areas; 27366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->active_area = 0; 27466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->level = level; 27566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->buf_size = buf_size; 27666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->entry_size = sizeof(debug_entry_t) + buf_size; 27766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu strlcpy(rc->name, name, sizeof(rc->name)-1); 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(rc->views, 0, DEBUG_MAX_VIEWS * sizeof(struct debug_view *)); 27966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(rc->debugfs_entries, 0 ,DEBUG_MAX_VIEWS * 28066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu sizeof(struct dentry*)); 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_set(&(rc->ref_count), 0); 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfail_malloc_areas: 28666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(rc->active_pages); 28766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufail_malloc_active_pages: 28866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(rc->active_entries); 28966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufail_malloc_active_entries: 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(rc); 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfail_malloc_rc: 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 29666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * debug_areas_free 29766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * - free all debug areas 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic void 30166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_areas_free(debug_info_t* db_info) 30266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 30366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int i,j; 30466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 30566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!db_info->areas) 30666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < db_info->nr_areas; i++) { 30866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j = 0; j < db_info->pages_per_area; j++) { 30966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(db_info->areas[i][j]); 31066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 31166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(db_info->areas[i]); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(db_info->areas); 31466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu db_info->areas = NULL; 31566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 31666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 31766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu/* 31866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * debug_info_free 31966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * - free memory debug-info 32066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 32166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 32266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic void 32366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_free(debug_info_t* db_info){ 32466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_areas_free(db_info); 32566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(db_info->active_entries); 32666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(db_info->active_pages); 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(db_info); 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_info_create 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - create new debug-info 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic debug_info_t* 33666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_create(char *name, int pages_per_area, int nr_areas, int buf_size) 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t* rc; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = debug_info_alloc(name, pages_per_area, nr_areas, buf_size, 34166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu DEBUG_DEFAULT_LEVEL, ALL_AREAS); 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!rc) 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* create root directory */ 34666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc->debugfs_root_entry = debugfs_create_dir(rc->name, 34766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_debugfs_root_entry); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* append new element to linked list */ 35066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!debug_area_first) { 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* first element in list */ 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_area_first = rc; 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc->prev = NULL; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* append element to end of list */ 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_area_last->next = rc; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc->prev = debug_area_last; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_area_last = rc; 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc->next = NULL; 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_get(rc); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_info_copy 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - copy debug-info 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic debug_info_t* 37366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_copy(debug_info_t* in, int mode) 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 37566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int i,j; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t* rc; 377942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu unsigned long flags; 378942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu 379942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu /* get a consistent copy of the debug areas */ 380942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu do { 381942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu rc = debug_info_alloc(in->name, in->pages_per_area, 382942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu in->nr_areas, in->buf_size, in->level, mode); 383942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu spin_lock_irqsave(&in->lock, flags); 384942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu if(!rc) 385942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu goto out; 386942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu /* has something changed in the meantime ? */ 387942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu if((rc->pages_per_area == in->pages_per_area) && 388942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu (rc->nr_areas == in->nr_areas)) { 389942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu break; 390942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu } 391942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu spin_unlock_irqrestore(&in->lock, flags); 392942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu debug_info_free(rc); 393942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu } while (1); 39466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 39566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!rc || (mode == NO_AREAS)) 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < in->nr_areas; i++){ 39966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j = 0; j < in->pages_per_area; j++) { 40066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memcpy(rc->areas[i][j], in->areas[i][j],PAGE_SIZE); 40166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 404942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu spin_unlock_irqrestore(&in->lock, flags); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_info_get 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - increments reference count for debug-info 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic void 41466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_get(debug_info_t * db_info) 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (db_info) 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&db_info->ref_count); 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_info_put: 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - decreases reference count for debug-info and frees it if necessary 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic void 42666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_put(debug_info_t *db_info) 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!db_info) 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (atomic_dec_and_test(&db_info->ref_count)) { 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DEBUG_MAX_VIEWS; i++) { 43466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!db_info->views[i]) 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 43666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debugfs_remove(db_info->debugfs_entries[i]); 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 43866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debugfs_remove(db_info->debugfs_root_entry); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(db_info == debug_area_first) 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_area_first = db_info->next; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(db_info == debug_area_last) 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_area_last = db_info->prev; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(db_info->prev) db_info->prev->next = db_info->next; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(db_info->next) db_info->next->prev = db_info->prev; 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_free(db_info); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_format_entry: 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - format one debug entry and return size of formated data 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 45466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 45566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_format_entry(file_private_info_t *p_info) 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t *id_snap = p_info->debug_info_snap; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct debug_view *view = p_info->view; 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_entry_t *act_entry; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t len = 0; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(p_info->act_entry == DEBUG_PROLOG_ENTRY){ 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* print prolog */ 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (view->prolog_proc) 46466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu len += view->prolog_proc(id_snap,view,p_info->temp_buf); 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 46766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!id_snap->areas) /* this is true, if we have a prolog only view */ 46866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto out; /* or if 'pages_per_area' is 0 */ 46966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu act_entry = (debug_entry_t *) ((char*)id_snap->areas[p_info->act_area] 47066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu [p_info->act_page] + p_info->act_entry); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (act_entry->id.stck == 0LL) 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; /* empty entry */ 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (view->header_proc) 47566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu len += view->header_proc(id_snap, view, p_info->act_area, 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds act_entry, p_info->temp_buf + len); 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (view->format_proc) 47866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu len += view->format_proc(id_snap, view, p_info->temp_buf + len, 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG_DATA(act_entry)); 48066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return len; 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_next_entry: 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - goto next entry in p_info 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline int 49066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_next_entry(file_private_info_t *p_info) 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 49266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_info_t *id; 49366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 49466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id = p_info->debug_info_snap; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(p_info->act_entry == DEBUG_PROLOG_ENTRY){ 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->act_entry = 0; 49766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_page = 0; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 50066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!id->areas) 50166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return 1; 50266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_entry += id->entry_size; 50366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* switch to next page, if we reached the end of the page */ 50466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (p_info->act_entry > (PAGE_SIZE - id->entry_size)){ 50566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* next page */ 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->act_entry = 0; 50766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_page += 1; 50866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if((p_info->act_page % id->pages_per_area) == 0) { 50966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* next area */ 51066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_area++; 51166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_page=0; 51266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(p_info->act_area >= id->nr_areas) 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_output: 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - called for user read() 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - copies formated debug entries to the user buffer 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 52666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic ssize_t 52766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_output(struct file *file, /* file descriptor */ 52866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char __user *user_buf, /* user buffer */ 52966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t len, /* length of buffer */ 53066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu loff_t *offset) /* offset in the file */ 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count = 0; 53366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t entry_offset; 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file_private_info_t *p_info; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info = ((file_private_info_t *) file->private_data); 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (*offset != p_info->offset) 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPIPE; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(p_info->act_area >= p_info->debug_info_snap->nr_areas) 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds entry_offset = p_info->act_entry_offset; 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(count < len){ 54366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int formatted_line_size; 54466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int formatted_line_residue; 54566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int user_buf_residue; 54666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t copy_size; 54766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 54866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu formatted_line_size = debug_format_entry(p_info); 54966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu formatted_line_residue = formatted_line_size - entry_offset; 55066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu user_buf_residue = len-count; 55166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu copy_size = min(user_buf_residue, formatted_line_residue); 55266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(copy_size){ 55366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (copy_to_user(user_buf + count, p_info->temp_buf 55466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu + entry_offset, copy_size)) 55566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return -EFAULT; 55666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu count += copy_size; 55766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu entry_offset += copy_size; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 55966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(copy_size == formatted_line_residue){ 56066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu entry_offset = 0; 56166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(debug_next_entry(p_info)) 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 56366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->offset = *offset + count; 56766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_entry_offset = entry_offset; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *offset = p_info->offset; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_input: 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - called for user write() 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - calls input function of view 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic ssize_t 57966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_input(struct file *file, const char __user *user_buf, size_t length, 58066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu loff_t *offset) 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file_private_info_t *p_info; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down(&debug_lock); 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info = ((file_private_info_t *) file->private_data); 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (p_info->view->input_proc) 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = p_info->view->input_proc(p_info->debug_info_org, 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->view, file, user_buf, 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length, offset); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EPERM; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up(&debug_lock); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; /* number of input characters */ 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_open: 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - called for user open() 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - copies formated output to private_data area of the file 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * handle 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 60466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 60566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_open(struct inode *inode, struct file *file) 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = 0, rc = 0; 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file_private_info_t *p_info; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t *debug_info, *debug_info_snapshot; 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down(&debug_lock); 612942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu debug_info = (struct debug_info*)file->f_dentry->d_inode->u.generic_ip; 613942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu /* find debug view */ 614942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu for (i = 0; i < DEBUG_MAX_VIEWS; i++) { 615942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu if (!debug_info->views[i]) 616942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu continue; 617942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu else if (debug_info->debugfs_entries[i] == 618942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu file->f_dentry) { 619942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu goto found; /* found view ! */ 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no entry found */ 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EINVAL; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 62666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufound: 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 62866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* Make snapshot of current debug areas to get it consistent. */ 62966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* To copy all the areas is only needed, if we have a view which */ 63066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* formats the debug areas. */ 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!debug_info->views[i]->format_proc && 63366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu !debug_info->views[i]->header_proc){ 63466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_info_snapshot = debug_info_copy(debug_info, NO_AREAS); 63566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 63666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_info_snapshot = debug_info_copy(debug_info, ALL_AREAS); 63766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!debug_info_snapshot){ 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENOMEM; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 64366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info = (file_private_info_t *) kmalloc(sizeof(file_private_info_t), 64466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu GFP_KERNEL); 64566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!p_info){ 64666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(debug_info_snapshot) 64766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_info_free(debug_info_snapshot); 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENOMEM; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->offset = 0; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->debug_info_snap = debug_info_snapshot; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->debug_info_org = debug_info; 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->view = debug_info->views[i]; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->act_area = 0; 65666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu p_info->act_page = 0; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->act_entry = DEBUG_PROLOG_ENTRY; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info->act_entry_offset = 0; 65966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu file->private_data = p_info; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_get(debug_info); 66166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up(&debug_lock); 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_close: 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - called for user close() 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - deletes private_data area of the file handle 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 67266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 67366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_close(struct inode *inode, struct file *file) 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file_private_info_t *p_info; 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p_info = (file_private_info_t *) file->private_data; 67766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(p_info->debug_info_snap) 67866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_info_free(p_info->debug_info_snap); 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_put(p_info->debug_info_org); 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(file->private_data); 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; /* success */ 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_register: 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - creates and initializes debug area for the caller 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - returns handle for debug area 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 69066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_info_t* 69166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_register (char *name, int pages_per_area, int nr_areas, int buf_size) 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_t *rc = NULL; 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!initialized) 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down(&debug_lock); 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* create new debug_info */ 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 70166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = debug_info_create(name, pages_per_area, nr_areas, buf_size); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!rc) 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_register_view(rc, &debug_level_view); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_register_view(rc, &debug_flush_view); 70666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_register_view(rc, &debug_pages_view); 70766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 70866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!rc){ 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "debug: debug_register failed for %s\n",name); 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up(&debug_lock); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_unregister: 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - give back debug area 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 72066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuvoid 72166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_unregister(debug_info_t * id) 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!id) 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down(&debug_lock); 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_info_put(id); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up(&debug_lock); 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 72966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 73466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * debug_set_size: 73566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * - set area size (number of pages) and number of areas 73666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 73766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 73866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_set_size(debug_info_t* id, int nr_areas, int pages_per_area) 73966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 74066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu unsigned long flags; 74166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_entry_t *** new_areas; 74266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int rc=0; 74366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 74466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!id || (nr_areas <= 0) || (pages_per_area < 0)) 74566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return -EINVAL; 74666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(pages_per_area > 0){ 74766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu new_areas = debug_areas_alloc(pages_per_area, nr_areas); 74866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!new_areas) { 74966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk(KERN_WARNING "debug: could not allocate memory "\ 75066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu "for pagenumber: %i\n",pages_per_area); 75166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -ENOMEM; 75266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto out; 75366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 75466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 75566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu new_areas = NULL; 75666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 75766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu spin_lock_irqsave(&id->lock,flags); 75866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_areas_free(id); 75966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->areas = new_areas; 76066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->nr_areas = nr_areas; 76166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->pages_per_area = pages_per_area; 76266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_area = 0; 76366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(id->active_entries,0,sizeof(int)*id->nr_areas); 76466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(id->active_pages, 0, sizeof(int)*id->nr_areas); 76566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu spin_unlock_irqrestore(&id->lock,flags); 76666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk(KERN_INFO "debug: %s: set new size (%i pages)\n"\ 76766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu ,id->name, pages_per_area); 76866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 76966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return rc; 77066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 77166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 77266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu/* 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_set_level: 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - set actual debug level 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 77766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuvoid 77866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_set_level(debug_info_t* id, int new_level) 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!id) 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock,flags); 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(new_level == DEBUG_OFF_LEVEL){ 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->level = DEBUG_OFF_LEVEL; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "debug: %s: switched off\n",id->name); 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if ((new_level > DEBUG_MAX_LEVEL) || (new_level < 0)) { 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "debug: %s: level %i is out of range (%i - %i)\n", 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->name, new_level, 0, DEBUG_MAX_LEVEL); 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->level = new_level; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock,flags); 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * proceed_active_entry: 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - set active entry to next in the ring buffer 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 80366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline void 80466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuproceed_active_entry(debug_info_t * id) 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 80666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if ((id->active_entries[id->active_area] += id->entry_size) 80766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu > (PAGE_SIZE - id->entry_size)){ 80866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_entries[id->active_area] = 0; 80966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_pages[id->active_area] = 81066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu (id->active_pages[id->active_area] + 1) % 81166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->pages_per_area; 81266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * proceed_active_area: 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - set active area to next in the ring buffer 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 82066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline void 82166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuproceed_active_area(debug_info_t * id) 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->active_area++; 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->active_area = id->active_area % id->nr_areas; 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * get_active_entry: 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 83166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline debug_entry_t* 83266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuget_active_entry(debug_info_t * id) 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 83466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return (debug_entry_t *) (((char *) id->areas[id->active_area] 83566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu [id->active_pages[id->active_area]]) + 83666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_entries[id->active_area]); 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_finish_entry: 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - set timestamp, caller address, cpu number etc. 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 84466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline void 84566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_finish_entry(debug_info_t * id, debug_entry_t* active, int level, 84666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int exception) 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 848942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu active->id.stck = get_clock(); 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active->id.fields.cpuid = smp_processor_id(); 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active->caller = __builtin_return_address(0); 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active->id.fields.exception = exception; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active->id.fields.level = level; 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds proceed_active_entry(id); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(exception) 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds proceed_active_area(id); 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_stoppable=1; 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug_active=1; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTL_S390DBF 5677 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTL_S390DBF_STOPPABLE 5678 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTL_S390DBF_ACTIVE 5679 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * proc handler for the running debug_active sysctl 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * always allow read, allow write only if debug_stoppable is set or 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if debug_active is already off 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 87066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 87166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheus390dbf_procactive(ctl_table *table, int write, struct file *filp, 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __user *buffer, size_t *lenp, loff_t *ppos) 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!write || debug_stoppable || !debug_active) 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return proc_dointvec(table, write, filp, buffer, lenp, ppos); 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct ctl_table s390dbf_table[] = { 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ctl_name = CTL_S390DBF_STOPPABLE, 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .procname = "debug_stoppable", 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .data = &debug_stoppable, 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .maxlen = sizeof(int), 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO | S_IWUSR, 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .proc_handler = &proc_dointvec, 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .strategy = &sysctl_intvec, 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ctl_name = CTL_S390DBF_ACTIVE, 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .procname = "debug_active", 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .data = &debug_active, 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .maxlen = sizeof(int), 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO | S_IWUSR, 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .proc_handler = &s390dbf_procactive, 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .strategy = &sysctl_intvec, 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { .ctl_name = 0 } 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct ctl_table s390dbf_dir_table[] = { 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ctl_name = CTL_S390DBF, 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .procname = "s390dbf", 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .maxlen = 0, 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO | S_IXUGO, 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .child = s390dbf_table, 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { .ctl_name = 0 } 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct ctl_table_header *s390dbf_sysctl_header; 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuvoid 91766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_stop_all(void) 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (debug_stoppable) 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_active = 0; 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_event_common: 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - write debug entry with given size 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 92966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_entry_t* 93066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_event_common(debug_info_t * id, int level, const void *buf, int len) 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_entry_t *active; 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 93566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!debug_active || !id->areas) 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active = get_active_entry(id); 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(DEBUG_DATA(active), 0, id->buf_size); 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size)); 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_finish_entry(id, active, level, 0); 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return active; 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_exception_common: 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - write debug entry with given size and switch to next debug area 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 95266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_entry_t 95366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu*debug_exception_common(debug_info_t * id, int level, const void *buf, int len) 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_entry_t *active; 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 95866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!debug_active || !id->areas) 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active = get_active_entry(id); 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(DEBUG_DATA(active), 0, id->buf_size); 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size)); 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_finish_entry(id, active, level, 1); 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return active; 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * counts arguments in format string for sprintf view 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 97466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuextern inline int 97566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_count_numargs(char *string) 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numargs=0; 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(*string) { 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(*string++=='%') 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds numargs++; 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return(numargs); 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_sprintf_event: 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 99066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_entry_t* 99166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_sprintf_event(debug_info_t* id, int level,char *string,...) 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_list ap; 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numargs,idx; 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_sprintf_entry_t *curr_event; 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_entry_t *active; 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((!id) || (level > id->level)) 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 100166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!debug_active || !id->areas) 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds numargs=debug_count_numargs(string); 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active = get_active_entry(id); 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event=(debug_sprintf_entry_t *) DEBUG_DATA(active); 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_start(ap,string); 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->string=string; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++) 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[idx]=va_arg(ap,long); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_end(ap); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_finish_entry(id, active, level, 0); 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return active; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_sprintf_exception: 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 102366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_entry_t* 102466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_sprintf_exception(debug_info_t* id, int level,char *string,...) 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_list ap; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int numargs,idx; 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_sprintf_entry_t *curr_event; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_entry_t *active; 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((!id) || (level > id->level)) 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 103466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!debug_active || !id->areas) 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds numargs=debug_count_numargs(string); 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds active = get_active_entry(id); 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event=(debug_sprintf_entry_t *)DEBUG_DATA(active); 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_start(ap,string); 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->string=string; 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++) 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[idx]=va_arg(ap,long); 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds va_end(ap); 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_finish_entry(id, active, level, 1); 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return active; 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_init: 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - is called exactly once to initialize the debug feature 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 105866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 105966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu__init debug_init(void) 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s390dbf_sysctl_header = register_sysctl_table(s390dbf_dir_table, 1); 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down(&debug_lock); 106566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_debugfs_root_entry = debugfs_create_dir(DEBUG_DIR_ROOT,NULL); 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "debug: Initialization complete\n"); 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initialized = 1; 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up(&debug_lock); 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_register_view: 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 107766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuint 107866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_register_view(debug_info_t * id, struct debug_view *view) 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode_t mode = S_IFREG; 108466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct dentry *pde; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!id) 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (view->prolog_proc || view->format_proc || view->header_proc) 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= S_IRUSR; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (view->input_proc) 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode |= S_IWUSR; 109266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu pde = debugfs_create_file(view->name, mode, id->debugfs_root_entry, 1093942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu id , &debug_file_ops); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!pde){ 109566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk(KERN_WARNING "debug: debugfs_create_file() failed!"\ 109666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu " Cannot register view %s/%s\n", id->name,view->name); 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -1; 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DEBUG_MAX_VIEWS; i++) { 110266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!id->views[i]) 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i == DEBUG_MAX_VIEWS) { 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "debug: cannot register view %s/%s\n", 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->name,view->name); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "debug: maximum number of views reached (%i)!\n", i); 111066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debugfs_remove(pde); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -1; 111266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->views[i] = view; 111466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->debugfs_entries[i] = pde; 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 111766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_unregister_view: 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 112566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuint 112666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_unregister_view(debug_info_t * id, struct debug_view *view) 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!id) 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock, flags); 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DEBUG_MAX_VIEWS; i++) { 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (id->views[i] == view) 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i == DEBUG_MAX_VIEWS) 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -1; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 114266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debugfs_remove(id->debugfs_entries[i]); 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->views[i] = NULL; 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = 0; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock, flags); 114766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 114866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return rc; 114966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 115066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 115166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic inline char * 115266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_get_user_string(const char __user *user_buf, size_t user_len) 115366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 115466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char* buffer; 115566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 115666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu buffer = kmalloc(user_len + 1, GFP_KERNEL); 115766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (!buffer) 115866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return ERR_PTR(-ENOMEM); 115966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (copy_from_user(buffer, user_buf, user_len) != 0) { 116066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(buffer); 116166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return ERR_PTR(-EFAULT); 116266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 116366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu /* got the string, now strip linefeed. */ 116466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (buffer[user_len - 1] == '\n') 116566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu buffer[user_len - 1] = 0; 116666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu else 116766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu buffer[user_len] = 0; 116866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return buffer; 116966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 117066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 117166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic inline int 117266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_get_uint(char *buf) 117366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 117466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int rc; 117566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 117666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(; isspace(*buf); buf++); 117766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = simple_strtoul(buf, &buf, 10); 117866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(*buf){ 117966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk("debug: no integer specified!\n"); 118066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EINVAL; 118166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * functions for debug-views 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *********************************** 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints out actual debug level 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 119466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 119566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_prolog_pages_fn(debug_info_t * id, 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct debug_view *view, char *out_buf) 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 119866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return sprintf(out_buf, "%i\n", id->pages_per_area); 119966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 120066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 120166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu/* 120266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * reads new size (number of pages per debug area) 120366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 120466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 120566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 120666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_input_pages_fn(debug_info_t * id, struct debug_view *view, 120766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 120866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_len, loff_t * offset) 120966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 121066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *str; 121166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int rc,new_pages; 121266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 121366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (user_len > 0x10000) 121466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu user_len = 0x10000; 121566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (*offset != 0){ 121666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EPIPE; 121766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto out; 121866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 121966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu str = debug_get_user_string(user_buf,user_len); 122066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(IS_ERR(str)){ 122166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = PTR_ERR(str); 122266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto out; 122366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 122466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu new_pages = debug_get_uint(str); 122566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(new_pages < 0){ 122666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EINVAL; 122766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto free_str; 122866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 122966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = debug_set_size(id,id->nr_areas, new_pages); 123066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(rc != 0){ 123166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EINVAL; 123266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto free_str; 123366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 123466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = user_len; 123566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufree_str: 123666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(str); 123766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 123866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu *offset += user_len; 123966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu return rc; /* number of input characters */ 124066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu} 124166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 124266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu/* 124366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu * prints out actual debug level 124466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu */ 124566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 124666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 124766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_prolog_level_fn(debug_info_t * id, struct debug_view *view, char *out_buf) 124866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu{ 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 125166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(id->level == DEBUG_OFF_LEVEL) { 125266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = sprintf(out_buf,"-\n"); 125366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 125466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu else { 125566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = sprintf(out_buf, "%i\n", id->level); 125666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reads new debug level 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 126466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 126566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_input_level_fn(debug_info_t * id, struct debug_view *view, 126666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 126766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_len, loff_t * offset) 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 126966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *str; 127066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int rc,new_level; 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 127266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (user_len > 0x10000) 127366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu user_len = 0x10000; 127466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (*offset != 0){ 127566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EPIPE; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 127766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 127866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu str = debug_get_user_string(user_buf,user_len); 127966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(IS_ERR(str)){ 128066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = PTR_ERR(str); 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 128366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(str[0] == '-'){ 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_set_level(id, DEBUG_OFF_LEVEL); 128566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = user_len; 128666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu goto free_str; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 128866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu new_level = debug_get_uint(str); 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 129066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(new_level < 0) { 129166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk(KERN_INFO "debug: level `%s` is not valid\n", str); 129266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EINVAL; 129366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } else { 129466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debug_set_level(id, new_level); 129566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = user_len; 129666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 129766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheufree_str: 129866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu kfree(str); 129966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 130066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu *offset += user_len; 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; /* number of input characters */ 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * flushes debug areas 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 130966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuvoid 131066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_flush(debug_info_t* id, int area) 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 131366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int i,j; 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if(!id || !id->areas) 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&id->lock,flags); 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(area == DEBUG_FLUSH_ALL){ 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->active_area = 0; 132066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(id->active_entries, 0, id->nr_areas * sizeof(int)); 132166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for (i = 0; i < id->nr_areas; i++) { 132266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_pages[i] = 0; 132366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(j = 0; j < id->pages_per_area; j++) { 132466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(id->areas[i][j], 0, PAGE_SIZE); 132566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 132666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "debug: %s: all areas flushed\n",id->name); 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(area >= 0 && area < id->nr_areas) { 132966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_entries[area] = 0; 133066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu id->active_pages[area] = 0; 133166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu for(i = 0; i < id->pages_per_area; i++) { 133266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu memset(id->areas[area][i],0,PAGE_SIZE); 133366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 133466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu printk(KERN_INFO "debug: %s: area %i has been flushed\n", 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->name, area); 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO 133866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu "debug: %s: area %i cannot be flushed (range: %i - %i)\n", 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id->name, area, 0, id->nr_areas-1); 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&id->lock,flags); 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * view function: flushes debug areas 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 134866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 134966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_input_flush_fn(debug_info_t * id, struct debug_view *view, 135066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu struct file *file, const char __user *user_buf, 135166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu size_t user_len, loff_t * offset) 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char input_buf[1]; 135466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int rc = user_len; 135566a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu 135666a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (user_len > 0x10000) 135766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu user_len = 0x10000; 135866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu if (*offset != 0){ 135966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu rc = -EPIPE; 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 136166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu } 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(input_buf, user_buf, 1)){ 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EFAULT; 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(input_buf[0] == '-') { 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_flush(id, DEBUG_FLUSH_ALL); 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isdigit(input_buf[0])) { 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int area = ((int) input_buf[0] - (int) '0'); 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds debug_flush(id, area); 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "debug: area `%c` is not valid\n", input_buf[0]); 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 137866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuout: 137966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu *offset += user_len; 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; /* number of input characters */ 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints debug header in raw format 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 138766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 138866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_raw_header_fn(debug_info_t * id, struct debug_view *view, 138966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu int area, debug_entry_t * entry, char *out_buf) 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = sizeof(debug_entry_t); 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(out_buf,entry,sizeof(debug_entry_t)); 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints debug data in raw format 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 140266a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 140366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_raw_format_fn(debug_info_t * id, struct debug_view *view, 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *out_buf, const char *in_buf) 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc; 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = id->buf_size; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(out_buf, in_buf, id->buf_size); 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints debug data in hex/ascii format 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141766a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 141866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view, 141966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *out_buf, const char *in_buf) 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i, rc = 0; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < id->buf_size; i++) { 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf + rc, "%02x ", 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((unsigned char *) in_buf)[i]); 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf + rc, "| "); 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < id->buf_size; i++) { 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char c = in_buf[i]; 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!isprint(c)) 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf + rc, "."); 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf + rc, "%c", c); 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf + rc, "\n"); 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints header for debug entry 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 144366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuint 144466a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_dflt_header_fn(debug_info_t * id, struct debug_view *view, 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int area, debug_entry_t * entry, char *out_buf) 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1447942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu struct timespec time_spec; 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long long time; 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *except_str; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long caller; 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int level; 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds level = entry->id.fields.level; 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds time = entry->id.stck; 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* adjust todclock to 1970 */ 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds time -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096); 1458942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu tod_to_timeval(time, &time_spec); 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (entry->id.fields.exception) 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds except_str = "*"; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds except_str = "-"; 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN; 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %p ", 1466942eaabd5d77522223a311ed9bddaaa3cefde27dMichael Holzheu area, time_spec.tv_sec, time_spec.tv_nsec / 1000, level, 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds except_str, entry->id.fields.cpuid, (void *) caller); 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prints debug data sprintf-formated: 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debug_sprinf_event/exception calls must be used together with this view 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_SPRINTF_MAX_ARGS 10 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 147866a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheustatic int 147966a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheudebug_sprintf_format_fn(debug_info_t * id, struct debug_view *view, 148066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu char *out_buf, debug_sprintf_entry_t *curr_event) 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int num_longs, num_used_args = 0,i, rc = 0; 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int index[DEBUG_SPRINTF_MAX_ARGS]; 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* count of longs fit into one entry */ 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds num_longs = id->buf_size / sizeof(long); 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(num_longs < 1) 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; /* bufsize of entry too small */ 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(num_longs == 1) { 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no args, we use only the string */ 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcpy(out_buf, curr_event->string); 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = strlen(curr_event->string); 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* number of arguments used for sprintf (without the format string) */ 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds num_used_args = min(DEBUG_SPRINTF_MAX_ARGS, (num_longs - 1)); 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(index,0, DEBUG_SPRINTF_MAX_ARGS * sizeof(int)); 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < num_used_args; i++) 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds index[i] = i; 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = sprintf(out_buf, curr_event->string, curr_event->args[index[0]], 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[index[1]], curr_event->args[index[2]], 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[index[3]], curr_event->args[index[4]], 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[index[5]], curr_event->args[index[6]], 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[index[7]], curr_event->args[index[8]], 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds curr_event->args[index[9]]); 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * clean up module 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 152066a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheuvoid 152166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu__exit debug_exit(void) 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 152366a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheu debugfs_remove(debug_debugfs_root_entry); 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unregister_sysctl_table(s390dbf_sysctl_header); 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * module definitions 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 153166a464dbc8e0345b6f972b92bf1118e043d7c987Michael Holzheupostcore_initcall(debug_init); 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(debug_exit); 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_register); 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_unregister); 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_set_level); 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_stop_all); 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_register_view); 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_unregister_view); 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_event_common); 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_exception_common); 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_hex_ascii_view); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_raw_view); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_dflt_header_fn); 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_sprintf_view); 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_sprintf_exception); 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(debug_sprintf_event); 1549