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timer: Stats: Simplify the flags handling

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Simplify the handling of the flag storage for the timer statistics. No
intermediate storage anymore. Just hand over the flags field.

I left the printout of 'deferrable' for now because changing this
would be an ABI update and I have no idea how strong people feel about
that. OTOH, I wonder whether we should kill the whole timer stats
stuff because all of that information can be retrieved via ftrace/perf
as well.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Joonwoo Park <joonwoop@codeaurora.org>
Cc: Wenbo Wang <wenbo.wang@memblaze.com>
Link: http://lkml.kernel.org/r/20150526224512.046626248@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2015-05-26 22:50:31 +00:00
parent 0eeda71bc3
commit c74441a17e
3 changed files with 8 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
kernel/time/timer.c
View File

@ -404,15 +404,12 @@ void __timer_stats_timer_set_start_info(struct timer_list *timer, void *addr)
static void timer_stats_account_timer(struct timer_list *timer)
{
unsigned int flag = 0;
if (likely(!timer->start_site))
return;
if (unlikely(timer->flags & TIMER_DEFERRABLE))
flag |= TIMER_STATS_FLAG_DEFERRABLE;
timer_stats_update_stats(timer, timer->start_pid, timer->start_site,
timer->function, timer->start_comm, flag);
timer->function, timer->start_comm,
timer->flags);
}
#else