diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-01-14 20:20:43 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-02-25 12:38:59 -0800 |
| commit | fff421580f512fc044cc7421fdff31a7a6997350 (patch) | |
| tree | 622758922122630ea7ac051a5d393a8bd4e7b34f /kernel/timer.c | |
| parent | 849401b66d305f3feb75b6db7459b95ad190552a (diff) | |
| download | linux-fff421580f512fc044cc7421fdff31a7a6997350.tar.bz2 | |
timers: Track total number of timers in list
Currently, the tvec_base structure's ->active_timers field tracks only
the non-deferrable timers, which means that even if ->active_timers is
zero, there might well be deferrable timers in the list. This commit
therefore adds an ->all_timers field to track all the timers, whether
deferrable or not.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Mike Galbraith <bitbucket@online.de>
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index accfd241b9e5..fdc43834f3af 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -81,6 +81,7 @@ struct tvec_base { unsigned long timer_jiffies; unsigned long next_timer; unsigned long active_timers; + unsigned long all_timers; struct tvec_root tv1; struct tvec tv2; struct tvec tv3; @@ -392,6 +393,7 @@ static void internal_add_timer(struct tvec_base *base, struct timer_list *timer) base->next_timer = timer->expires; base->active_timers++; } + base->all_timers++; } #ifdef CONFIG_TIMER_STATS @@ -671,6 +673,7 @@ detach_expired_timer(struct timer_list *timer, struct tvec_base *base) detach_timer(timer, true); if (!tbase_get_deferrable(timer->base)) base->active_timers--; + base->all_timers--; } static int detach_if_pending(struct timer_list *timer, struct tvec_base *base, @@ -685,6 +688,7 @@ static int detach_if_pending(struct timer_list *timer, struct tvec_base *base, if (timer->expires == base->next_timer) base->next_timer = base->timer_jiffies; } + base->all_timers--; return 1; } @@ -1559,6 +1563,7 @@ static int init_timers_cpu(int cpu) base->timer_jiffies = jiffies; base->next_timer = base->timer_jiffies; base->active_timers = 0; + base->all_timers = 0; return 0; } |