__field( pid_t, pid )
__field( int, prio )
__field( int, success )
+ __field( int, cpu )
),
TP_fast_assign(
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
+ __entry->cpu = task_cpu(p);
),
- TP_printk("task %s:%d [%d] success=%d",
+ TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
- __entry->success)
+ __entry->success, __entry->cpu)
);
/*
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
+ __field( int, cpu )
),
TP_fast_assign(
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
+ __entry->cpu = task_cpu(p);
),
- TP_printk("task %s:%d [%d] success=%d",
+ TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
- __entry->success)
+ __entry->success, __entry->cpu)
);
/*
__entry->sig, __entry->comm, __entry->pid)
);
+/*
+ * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
+ * adding sched_stat support to SCHED_FIFO/RR would be welcome.
+ */
+
+/*
+ * Tracepoint for accounting wait time (time the task is runnable
+ * but not actually running due to scheduler contention).
+ */
+TRACE_EVENT(sched_stat_wait,
+
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+
+ TP_ARGS(tsk, delay),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( u64, delay )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->delay = delay;
+ )
+ TP_perf_assign(
+ __perf_count(delay);
+ ),
+
+ TP_printk("task: %s:%d wait: %Lu [ns]",
+ __entry->comm, __entry->pid,
+ (unsigned long long)__entry->delay)
+);
+
+/*
+ * Tracepoint for accounting sleep time (time the task is not runnable,
+ * including iowait, see below).
+ */
+TRACE_EVENT(sched_stat_sleep,
+
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+
+ TP_ARGS(tsk, delay),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( u64, delay )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->delay = delay;
+ )
+ TP_perf_assign(
+ __perf_count(delay);
+ ),
+
+ TP_printk("task: %s:%d sleep: %Lu [ns]",
+ __entry->comm, __entry->pid,
+ (unsigned long long)__entry->delay)
+);
+
+/*
+ * Tracepoint for accounting iowait time (time the task is not runnable
+ * due to waiting on IO to complete).
+ */
+TRACE_EVENT(sched_stat_iowait,
+
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+
+ TP_ARGS(tsk, delay),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( u64, delay )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->delay = delay;
+ )
+ TP_perf_assign(
+ __perf_count(delay);
+ ),
+
+ TP_printk("task: %s:%d iowait: %Lu [ns]",
+ __entry->comm, __entry->pid,
+ (unsigned long long)__entry->delay)
+);
+
#endif /* _TRACE_SCHED_H */
/* This part must be outside protection */
-#include "../perf.h"
#include "util.h"
+#include "../perf.h"
#include "parse-options.h"
#include "parse-events.h"
#include "exec_cmd.h"
#include "string.h"
#include "cache.h"
-extern char *strcasestr(const char *haystack, const char *needle);
-
int nr_counters;
struct perf_counter_attr attrs[MAX_COUNTERS];
struct event_symbol {
- u8 type;
- u64 config;
- char *symbol;
- char *alias;
+ u8 type;
+ u64 config;
+ const char *symbol;
+ const char *alias;
};
char debugfs_path[MAXPATHLEN];
#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE)
#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT)
-static char *hw_event_names[] = {
+static const char *hw_event_names[] = {
"cycles",
"instructions",
"cache-references",
"bus-cycles",
};
-static char *sw_event_names[] = {
+static const char *sw_event_names[] = {
"cpu-clock-msecs",
"task-clock-msecs",
"page-faults",
#define MAX_ALIASES 8
-static char *hw_cache[][MAX_ALIASES] = {
+static const char *hw_cache[][MAX_ALIASES] = {
{ "L1-dcache", "l1-d", "l1d", "L1-data", },
{ "L1-icache", "l1-i", "l1i", "L1-instruction", },
{ "LLC", "L2" },
{ "branch", "branches", "bpu", "btb", "bpc", },
};
-static char *hw_cache_op[][MAX_ALIASES] = {
+static const char *hw_cache_op[][MAX_ALIASES] = {
{ "load", "loads", "read", },
{ "store", "stores", "write", },
{ "prefetch", "prefetches", "speculative-read", "speculative-load", },
};
-static char *hw_cache_result[][MAX_ALIASES] = {
+static const char *hw_cache_result[][MAX_ALIASES] = {
{ "refs", "Reference", "ops", "access", },
{ "misses", "miss", },
};
[C(BPU)] = (CACHE_READ),
};
-#define for_each_subsystem(sys_dir, sys_dirent, sys_next, file, st) \
+#define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
- if (snprintf(file, MAXPATHLEN, "%s/%s", debugfs_path, \
- sys_dirent.d_name) && \
- (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \
+ if (sys_dirent.d_type == DT_DIR && \
(strcmp(sys_dirent.d_name, ".")) && \
(strcmp(sys_dirent.d_name, "..")))
return 0;
}
-#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \
+#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
- if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \
- sys_dirent.d_name, evt_dirent.d_name) && \
- (!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \
+ if (evt_dirent.d_type == DT_DIR && \
(strcmp(evt_dirent.d_name, ".")) && \
(strcmp(evt_dirent.d_name, "..")) && \
(!tp_event_has_id(&sys_dirent, &evt_dirent)))
return 0;
}
-static char *tracepoint_id_to_name(u64 config)
+struct tracepoint_path *tracepoint_id_to_path(u64 config)
{
- static char tracepoint_name[2 * MAX_EVENT_LENGTH];
+ struct tracepoint_path *path = NULL;
DIR *sys_dir, *evt_dir;
struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
- struct stat st;
char id_buf[4];
- int fd;
+ int sys_dir_fd, fd;
u64 id;
char evt_path[MAXPATHLEN];
if (valid_debugfs_mount(debugfs_path))
- return "unkown";
+ return NULL;
sys_dir = opendir(debugfs_path);
if (!sys_dir)
goto cleanup;
-
- for_each_subsystem(sys_dir, sys_dirent, sys_next, evt_path, st) {
- evt_dir = opendir(evt_path);
- if (!evt_dir)
- goto cleanup;
- for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next,
- evt_path, st) {
- snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id",
- debugfs_path, sys_dirent.d_name,
+ sys_dir_fd = dirfd(sys_dir);
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+ int dfd = openat(sys_dir_fd, sys_dirent.d_name,
+ O_RDONLY|O_DIRECTORY), evt_dir_fd;
+ if (dfd == -1)
+ continue;
+ evt_dir = fdopendir(dfd);
+ if (!evt_dir) {
+ close(dfd);
+ continue;
+ }
+ evt_dir_fd = dirfd(evt_dir);
+ for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+ snprintf(evt_path, MAXPATHLEN, "%s/id",
evt_dirent.d_name);
- fd = open(evt_path, O_RDONLY);
+ fd = openat(evt_dir_fd, evt_path, O_RDONLY);
if (fd < 0)
continue;
if (read(fd, id_buf, sizeof(id_buf)) < 0) {
if (id == config) {
closedir(evt_dir);
closedir(sys_dir);
- snprintf(tracepoint_name, 2 * MAX_EVENT_LENGTH,
- "%s:%s", sys_dirent.d_name,
- evt_dirent.d_name);
- return tracepoint_name;
+ path = calloc(1, sizeof(path));
+ path->system = malloc(MAX_EVENT_LENGTH);
+ if (!path->system) {
+ free(path);
+ return NULL;
+ }
+ path->name = malloc(MAX_EVENT_LENGTH);
+ if (!path->name) {
+ free(path->system);
+ free(path);
+ return NULL;
+ }
+ strncpy(path->system, sys_dirent.d_name,
+ MAX_EVENT_LENGTH);
+ strncpy(path->name, evt_dirent.d_name,
+ MAX_EVENT_LENGTH);
+ return path;
}
}
closedir(evt_dir);
cleanup:
closedir(sys_dir);
- return "unkown";
+ return NULL;
+}
+
+#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
+static const char *tracepoint_id_to_name(u64 config)
+{
+ static char buf[TP_PATH_LEN];
+ struct tracepoint_path *path;
+
+ path = tracepoint_id_to_path(config);
+ if (path) {
+ snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
+ free(path->name);
+ free(path->system);
+ free(path);
+ } else
+ snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
+
+ return buf;
}
static int is_cache_op_valid(u8 cache_type, u8 cache_op)
return name;
}
-char *event_name(int counter)
+const char *event_name(int counter)
{
u64 config = attrs[counter].config;
int type = attrs[counter].type;
return __event_name(type, config);
}
-char *__event_name(int type, u64 config)
+const char *__event_name(int type, u64 config)
{
static char buf[32];
return "unknown";
}
-static int parse_aliases(const char **str, char *names[][MAX_ALIASES], int size)
+static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
{
int i, j;
int n, longest = -1;
{
DIR *sys_dir, *evt_dir;
struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
- struct stat st;
+ int sys_dir_fd;
char evt_path[MAXPATHLEN];
if (valid_debugfs_mount(debugfs_path))
sys_dir = opendir(debugfs_path);
if (!sys_dir)
goto cleanup;
-
- for_each_subsystem(sys_dir, sys_dirent, sys_next, evt_path, st) {
- evt_dir = opendir(evt_path);
- if (!evt_dir)
- goto cleanup;
- for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next,
- evt_path, st) {
+ sys_dir_fd = dirfd(sys_dir);
+
+ for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+ int dfd = openat(sys_dir_fd, sys_dirent.d_name,
+ O_RDONLY|O_DIRECTORY), evt_dir_fd;
+ if (dfd == -1)
+ continue;
+ evt_dir = fdopendir(dfd);
+ if (!evt_dir) {
+ close(dfd);
+ continue;
+ }
+ evt_dir_fd = dirfd(evt_dir);
+ for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
snprintf(evt_path, MAXPATHLEN, "%s:%s",
sys_dirent.d_name, evt_dirent.d_name);
- fprintf(stderr, " %-40s [%s]\n", evt_path,
+ fprintf(stderr, " %-42s [%s]\n", evt_path,
event_type_descriptors[PERF_TYPE_TRACEPOINT+1]);
}
closedir(evt_dir);
sprintf(name, "%s OR %s", syms->symbol, syms->alias);
else
strcpy(name, syms->symbol);
- fprintf(stderr, " %-40s [%s]\n", name,
+ fprintf(stderr, " %-42s [%s]\n", name,
event_type_descriptors[type]);
prev_type = type;
continue;
for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
- fprintf(stderr, " %-40s [%s]\n",
+ fprintf(stderr, " %-42s [%s]\n",
event_cache_name(type, op, i),
event_type_descriptors[4]);
}
}
fprintf(stderr, "\n");
- fprintf(stderr, " %-40s [raw hardware event descriptor]\n",
+ fprintf(stderr, " %-42s [raw hardware event descriptor]\n",
"rNNN");
fprintf(stderr, "\n");
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff