blktrace_api.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633 
1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _UAPIBLKTRACE_H
20#define _UAPIBLKTRACE_H
21#include <linux/types.h>
22enum blktrace_cat {
23  BLK_TC_READ = 1 << 0,
24  BLK_TC_WRITE = 1 << 1,
25  BLK_TC_FLUSH = 1 << 2,
26  BLK_TC_SYNC = 1 << 3,
27  BLK_TC_SYNCIO = BLK_TC_SYNC,
28  BLK_TC_QUEUE = 1 << 4,
29  BLK_TC_REQUEUE = 1 << 5,
30  BLK_TC_ISSUE = 1 << 6,
31  BLK_TC_COMPLETE = 1 << 7,
32  BLK_TC_FS = 1 << 8,
33  BLK_TC_PC = 1 << 9,
34  BLK_TC_NOTIFY = 1 << 10,
35  BLK_TC_AHEAD = 1 << 11,
36  BLK_TC_META = 1 << 12,
37  BLK_TC_DISCARD = 1 << 13,
38  BLK_TC_DRV_DATA = 1 << 14,
39  BLK_TC_FUA = 1 << 15,
40  BLK_TC_END = 1 << 15,
41};
42#define BLK_TC_SHIFT (16)
43#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
44enum blktrace_act {
45  __BLK_TA_QUEUE = 1,
46  __BLK_TA_BACKMERGE,
47  __BLK_TA_FRONTMERGE,
48  __BLK_TA_GETRQ,
49  __BLK_TA_SLEEPRQ,
50  __BLK_TA_REQUEUE,
51  __BLK_TA_ISSUE,
52  __BLK_TA_COMPLETE,
53  __BLK_TA_PLUG,
54  __BLK_TA_UNPLUG_IO,
55  __BLK_TA_UNPLUG_TIMER,
56  __BLK_TA_INSERT,
57  __BLK_TA_SPLIT,
58  __BLK_TA_BOUNCE,
59  __BLK_TA_REMAP,
60  __BLK_TA_ABORT,
61  __BLK_TA_DRV_DATA,
62};
63enum blktrace_notify {
64  __BLK_TN_PROCESS = 0,
65  __BLK_TN_TIMESTAMP,
66  __BLK_TN_MESSAGE,
67};
68#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
69#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
70#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
71#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
72#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
73#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
74#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
75#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE | BLK_TC_ACT(BLK_TC_COMPLETE))
76#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
77#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
78#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
79#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
80#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
81#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
82#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
83#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
84#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
85#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
86#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
87#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
88#define BLK_IO_TRACE_MAGIC 0x65617400
89#define BLK_IO_TRACE_VERSION 0x07
90struct blk_io_trace {
91  __u32 magic;
92  __u32 sequence;
93  __u64 time;
94  __u64 sector;
95  __u32 bytes;
96  __u32 action;
97  __u32 pid;
98  __u32 device;
99  __u32 cpu;
100  __u16 error;
101  __u16 pdu_len;
102};
103struct blk_io_trace_remap {
104  __be32 device_from;
105  __be32 device_to;
106  __be64 sector_from;
107};
108enum {
109  Blktrace_setup = 1,
110  Blktrace_running,
111  Blktrace_stopped,
112};
113#define BLKTRACE_BDEV_SIZE 32
114struct blk_user_trace_setup {
115  char name[BLKTRACE_BDEV_SIZE];
116  __u16 act_mask;
117  __u32 buf_size;
118  __u32 buf_nr;
119  __u64 start_lba;
120  __u64 end_lba;
121  __u32 pid;
122};
123#endif
124