Messages in this thread Patch in this message | | | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/timers 1/4] timers: Track total number of timers in list | Date | Tue, 14 Jan 2014 21:20:45 -0800 |
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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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 non-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> --- kernel/timer.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/kernel/timer.c b/kernel/timer.c index 6582b82fa966..2245b7374c3d 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; } @@ -1560,6 +1564,7 @@ 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; } -- 1.8.1.5
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