From 8629ea2eaba8ca0de2e38ce1b4a825e16255976e Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Thu, 3 Sep 2009 16:32:53 +0800 Subject: [PATCH] hrtimer: Fix /proc/timer_list regression commit 507e1231 (timer stats: Optimize by adding quick check to avoid function calls) introduced a regression in /proc/timer_list. /proc/timer_list shows now #0: , tick_sched_timer, S:01, <(null)>, /-1 instead of #0: , tick_sched_timer, S:01, hrtimer_start, swapper/0 Revert the hrtimer quick check for now. The optimization needs more thought, but this is neither 2.6.32-rc7 nor stable material. [ tglx: - Removed unrelated changes from the original patch - Prevent unneccesary call to timer_stats_update_stats - massaged the changelog ] Signed-off-by: Feng Tang LKML-Reference: Cc: Heiko Carstens Cc: stable@kernel.org Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- include/linux/hrtimer.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index ff037f0..9bace4b 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -446,7 +446,7 @@ extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf, static inline void timer_stats_account_hrtimer(struct hrtimer *timer) { - if (likely(!timer->start_site)) + if (likely(!timer_stats_active)) return; timer_stats_update_stats(timer, timer->start_pid, timer->start_site, timer->function, timer->start_comm, 0); @@ -457,8 +457,6 @@ extern void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer, static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer) { - if (likely(!timer_stats_active)) - return; __timer_stats_hrtimer_set_start_info(timer, __builtin_return_address(0)); } -- 2.7.4