1e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 2e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 3e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * The struct perf_event_attr test support. 4e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 5e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This test is embedded inside into perf directly and is governed 6e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * by the PERF_TEST_ATTR environment variable and hook inside 7e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * sys_perf_event_open function. 8e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 9e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * The general idea is to store 'struct perf_event_attr' details for 10e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * each event created within single perf command. Each event details 11e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * are stored into separate text file. Once perf command is finished 12e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * these files can be checked for values we expect for command. 13e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 14e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Besides 'struct perf_event_attr' values we also store 'fd' and 15e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 'group_fd' values to allow checking for groups created. 16e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 17e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This all is triggered by setting PERF_TEST_ATTR environment variable. 18e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * It must contain name of existing directory with access and write 19e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * permissions. All the event text files are stored there. 20e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 21e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 22e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 23e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select 24e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. 25e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 26e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define __SANE_USERSPACE_TYPES__ 27e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <stdlib.h> 28e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <stdio.h> 29e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <inttypes.h> 30e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <linux/types.h> 31e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <linux/kernel.h> 32e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "../perf.h" 33e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "util.h" 34e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "exec_cmd.h" 35e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "tests.h" 36e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 37e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define ENV "PERF_TEST_ATTR" 38e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 39e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengextern int verbose; 40e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 41e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengstatic char *dir; 42e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 43e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengvoid test_attr__init(void) 44e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 45e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng dir = getenv(ENV); 46e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng test_attr__enabled = (dir != NULL); 47e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 48e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 49e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define BUFSIZE 1024 50e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 51e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define __WRITE_ASS(str, fmt, data) \ 52e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengdo { \ 53e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char buf[BUFSIZE]; \ 54e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng size_t size; \ 55e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng \ 56e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng size = snprintf(buf, BUFSIZE, #str "=%"fmt "\n", data); \ 57e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (1 != fwrite(buf, size, 1, file)) { \ 58e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng perror("test attr - failed to write event file"); \ 59e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng fclose(file); \ 60e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return -1; \ 61e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } \ 62e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng \ 63e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} while (0) 64e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 65e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field) 66e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 67e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengstatic int store_event(struct perf_event_attr *attr, pid_t pid, int cpu, 68e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int fd, int group_fd, unsigned long flags) 69e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 70e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng FILE *file; 71e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char path[PATH_MAX]; 72e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 73e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir, 74e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng attr->type, attr->config, fd); 75e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 76e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng file = fopen(path, "w+"); 77e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (!file) { 78e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng perror("test attr - failed to open event file"); 79e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return -1; 80e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 81e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 82e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (fprintf(file, "[event-%d-%llu-%d]\n", 83e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng attr->type, attr->config, fd) < 0) { 84e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng perror("test attr - failed to write event file"); 85e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng fclose(file); 86e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return -1; 87e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 88e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 89e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* syscall arguments */ 90e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __WRITE_ASS(fd, "d", fd); 91e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __WRITE_ASS(group_fd, "d", group_fd); 92e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __WRITE_ASS(cpu, "d", cpu); 93e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __WRITE_ASS(pid, "d", pid); 94e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng __WRITE_ASS(flags, "lu", flags); 95e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 96e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* struct perf_event_attr */ 97e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(type, PRIu32); 98e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(size, PRIu32); 99e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(config, "llu"); 100e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(sample_period, "llu"); 101e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(sample_type, "llu"); 102e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(read_format, "llu"); 103e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(disabled, "d"); 104e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(inherit, "d"); 105e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(pinned, "d"); 106e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclusive, "d"); 107e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_user, "d"); 108e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_kernel, "d"); 109e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_hv, "d"); 110e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_idle, "d"); 111e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(mmap, "d"); 112e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(comm, "d"); 113e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(freq, "d"); 114e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(inherit_stat, "d"); 115e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(enable_on_exec, "d"); 116e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(task, "d"); 117e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(watermark, "d"); 118e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(precise_ip, "d"); 119e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(mmap_data, "d"); 120e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(sample_id_all, "d"); 121e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_host, "d"); 122e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_guest, "d"); 123e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_callchain_kernel, "d"); 124e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(exclude_callchain_user, "d"); 125e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(wakeup_events, PRIu32); 126e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(bp_type, PRIu32); 127e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(config1, "llu"); 128e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(config2, "llu"); 129e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(branch_sample_type, "llu"); 130e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(sample_regs_user, "llu"); 131e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WRITE_ASS(sample_stack_user, PRIu32); 132e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 133e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng fclose(file); 134e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return 0; 135e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 136e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 137e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengvoid test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu, 138e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int fd, int group_fd, unsigned long flags) 139e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 140e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int errno_saved = errno; 141e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 142e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (store_event(attr, pid, cpu, fd, group_fd, flags)) 143e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng die("test attr FAILED"); 144e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 145e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng errno = errno_saved; 146e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 147e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 148e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengstatic int run_dir(const char *d, const char *perf) 149e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 150e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char v[] = "-vvvvv"; 151e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng int vcnt = min(verbose, (int) sizeof(v) - 1); 152e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char cmd[3*PATH_MAX]; 153e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 154e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (verbose) 155e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng vcnt++; 156e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 157e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng snprintf(cmd, 3*PATH_MAX, PYTHON " %s/attr.py -d %s/attr/ -p %s %.*s", 158e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng d, d, perf, vcnt, v); 159e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 160e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return system(cmd); 161e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 162e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 163e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengint test__attr(void) 164e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng{ 165e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng struct stat st; 166e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char path_perf[PATH_MAX]; 167e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng char path_dir[PATH_MAX]; 168e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 169e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* First try developement tree tests. */ 170e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (!lstat("./tests", &st)) 171e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return run_dir("./tests", "./perf"); 172e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 173e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /* Then installed path. */ 174e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng snprintf(path_dir, PATH_MAX, "%s/tests", perf_exec_path()); 175e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng snprintf(path_perf, PATH_MAX, "%s/perf", BINDIR); 176e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 177e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (!lstat(path_dir, &st) && 178e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng !lstat(path_perf, &st)) 179e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return run_dir(path_dir, path_perf); 180e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 181e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng fprintf(stderr, " (omitted)"); 182e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return 0; 183e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 184