diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2009-03-23 23:12:58 -0400 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-03-24 23:41:09 -0400 |
| commit | 0706f1c48ca8a7ab478090b4e38f2e578ae2bfe0 (patch) | |
| tree | 26b79090f8e7e62796bb871ff089d04799919855 /kernel/trace/trace.c | |
| parent | 493762fc534c71d11d489f872c4b4a2c61173668 (diff) | |
tracing: adding function timings to function profiler
If the function graph trace is enabled, the function profiler will
use it to take the timing of the functions.
cat /debug/tracing/trace_stat/functions
Function Hit Time
-------- --- ----
mwait_idle 127 183028.4 us
schedule 26 151997.7 us
__schedule 31 151975.1 us
sys_wait4 2 74080.53 us
do_wait 2 74077.80 us
sys_newlstat 138 39929.16 us
do_path_lookup 179 39845.79 us
vfs_lstat_fd 138 39761.97 us
user_path_at 153 39469.58 us
path_walk 179 39435.76 us
__link_path_walk 189 39143.73 us
[...]
Note the times are skewed due to the function graph tracer not taking
into account schedules.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 67c6a21dd42..821bf49771d 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -402,17 +402,6 @@ static ssize_t trace_seq_to_buffer(struct trace_seq *s, void *buf, size_t cnt) return cnt; } -static void -trace_print_seq(struct seq_file *m, struct trace_seq *s) -{ - int len = s->len >= PAGE_SIZE ? PAGE_SIZE - 1 : s->len; - - s->buffer[len] = 0; - seq_puts(m, s->buffer); - - trace_seq_init(s); -} - /** * update_max_tr - snapshot all trace buffers from global_trace to max_tr * @tr: tracer |