aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/posix-cpu-timers.c
diff options
context:
space:
mode:
authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2009-08-10 10:52:30 +0800
committerThomas Gleixner <tglx@linutronix.de>2009-08-29 14:10:07 +0200
commit3f0a525ebf4b8ef041a332bbe4a73aee94bb064b (patch)
tree18c542b9896f8ac4b8d89db868ba46d38576228d /kernel/posix-cpu-timers.c
parentc6a2a1770245f654f35f60e1458d4356680f9519 (diff)
downloadmrst-s0i3-test-3f0a525ebf4b8ef041a332bbe4a73aee94bb064b.tar.gz
mrst-s0i3-test-3f0a525ebf4b8ef041a332bbe4a73aee94bb064b.tar.xz
mrst-s0i3-test-3f0a525ebf4b8ef041a332bbe4a73aee94bb064b.zip
itimers: Add tracepoints for itimer
Add tracepoints for all itimer variants: ITIMER_REAL, ITIMER_VIRTUAL and ITIMER_PROF. [ tglx: Fixed comments and made the output more readable, parseable and consistent. Replaced pid_vnr by pid_nr because the hrtimer callback can happen in any namespace ] Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Anton Blanchard <anton@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Zhaolei <zhaolei@cn.fujitsu.com> LKML-Reference: <4A7F8B6E.2010109@cn.fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/posix-cpu-timers.c')
-rw-r--r--kernel/posix-cpu-timers.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 12161f74744..5c9dc228747 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -8,6 +8,7 @@
#include <linux/math64.h>
#include <asm/uaccess.h>
#include <linux/kernel_stat.h>
+#include <trace/events/timer.h>
/*
* Called after updating RLIMIT_CPU to set timer expiration if necessary.
@@ -1090,9 +1091,13 @@ static void check_cpu_itimer(struct task_struct *tsk, struct cpu_itimer *it,
cputime_one_jiffy);
it->error -= onecputick;
}
- } else
+ } else {
it->expires = cputime_zero;
+ }
+ trace_itimer_expire(signo == SIGPROF ?
+ ITIMER_PROF : ITIMER_VIRTUAL,
+ tsk->signal->leader_pid, cur_time);
__group_send_sig_info(signo, SEND_SIG_PRIV, tsk);
}