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| author | Takashi Iwai <tiwai@suse.de> | 2009-03-09 15:21:57 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-03-09 15:21:57 +0100 |
| commit | efdcd41b4e41560375bb34ad8b095bcaa1c3a93f (patch) | |
| tree | 57200ef68bae530776c0c2621c51e9464e1e72f9 /kernel/time | |
| parent | 33dbe6114047496a5b6fee0941c52dad41250043 (diff) | |
| parent | 79c7cdd5441f5d3900c1632adcc8cd2bee35c8da (diff) | |
| download | lwn-efdcd41b4e41560375bb34ad8b095bcaa1c3a93f.tar.gz lwn-efdcd41b4e41560375bb34ad8b095bcaa1c3a93f.zip | |
Merge branch 'topic/vmaster-update' into topic/docbook-fix
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/tick-common.c | 26 | ||||
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
2 files changed, 20 insertions, 8 deletions
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 63e05d423a09..21a5ca849514 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -274,6 +274,21 @@ out_bc: } /* + * Transfer the do_timer job away from a dying cpu. + * + * Called with interrupts disabled. + */ +static void tick_handover_do_timer(int *cpup) +{ + if (*cpup == tick_do_timer_cpu) { + int cpu = cpumask_first(cpu_online_mask); + + tick_do_timer_cpu = (cpu < nr_cpu_ids) ? cpu : + TICK_DO_TIMER_NONE; + } +} + +/* * Shutdown an event device on a given cpu: * * This is called on a life CPU, when a CPU is dead. So we cannot @@ -297,13 +312,6 @@ static void tick_shutdown(unsigned int *cpup) clockevents_exchange_device(dev, NULL); td->evtdev = NULL; } - /* Transfer the do_timer job away from this cpu */ - if (*cpup == tick_do_timer_cpu) { - int cpu = cpumask_first(cpu_online_mask); - - tick_do_timer_cpu = (cpu < nr_cpu_ids) ? cpu : - TICK_DO_TIMER_NONE; - } spin_unlock_irqrestore(&tick_device_lock, flags); } @@ -357,6 +365,10 @@ static int tick_notify(struct notifier_block *nb, unsigned long reason, tick_broadcast_oneshot_control(reason); break; + case CLOCK_EVT_NOTIFY_CPU_DYING: + tick_handover_do_timer(dev); + break; + case CLOCK_EVT_NOTIFY_CPU_DEAD: tick_shutdown_broadcast_oneshot(dev); tick_shutdown_broadcast(dev); diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 1b6c05bd0d0a..d3f1ef4d5cbe 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -134,7 +134,7 @@ __setup("nohz=", setup_tick_nohz); * value. We do this unconditionally on any cpu, as we don't know whether the * cpu, which has the update task assigned is in a long sleep. */ -void tick_nohz_update_jiffies(void) +static void tick_nohz_update_jiffies(void) { int cpu = smp_processor_id(); struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); |
