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| author | Andrew Vagin <avagin@openvz.org> | 2011-11-28 12:03:35 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-06 08:51:23 +0100 |
| commit | b781a602ac745ee3d5d745276f1e1905a2c101f9 (patch) | |
| tree | bae4134842fba8c0e8ab22a205b73f21eba6c1d4 /kernel/sched | |
| parent | 391e43da797a96aeb65410281891f6d0b0e9611c (diff) | |
| download | linux-stable-b781a602ac745ee3d5d745276f1e1905a2c101f9.tar.gz linux-stable-b781a602ac745ee3d5d745276f1e1905a2c101f9.tar.bz2 linux-stable-b781a602ac745ee3d5d745276f1e1905a2c101f9.zip | |
events, sched: Add tracepoint for accounting blocked time
This tracepoint shows how long a task is sleeping in uninterruptible state.
E.g. it may show how long and where a mutex is waited for.
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1322471015-107825-8-git-send-email-avagin@openvz.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/fair.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index cd3b64219d9f..7c62e2bf234f 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1030,6 +1030,8 @@ static void enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se) trace_sched_stat_iowait(tsk, delta); } + trace_sched_stat_blocked(tsk, delta); + /* * Blocking time is in units of nanosecs, so shift by * 20 to get a milliseconds-range estimation of the |