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authorIngo Molnar <mingo@elte.hu>2009-02-11 03:22:04 -0500
committerIngo Molnar <mingo@elte.hu>2009-02-11 03:22:04 -0500
commit95fd4845ed0ffcab305b4f30ce1c12dc34f1b56c (patch)
treeaa2aac22a5b329b778a6771a87bbf1945ad49bbd /kernel/time
parentd278c48435625cb6b7edcf6a547620768b175709 (diff)
parent8e4921515c1a379539607eb443d51c30f4f7f338 (diff)
Merge commit 'v2.6.29-rc4' into perfcounters/core
Conflicts: arch/x86/kernel/setup_percpu.c arch/x86/mm/fault.c drivers/acpi/processor_idle.c kernel/irq/handle.c
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-common.c26
-rw-r--r--kernel/time/tick-sched.c2
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:
274} 274}
275 275
276/* 276/*
277 * Transfer the do_timer job away from a dying cpu.
278 *
279 * Called with interrupts disabled.
280 */
281static void tick_handover_do_timer(int *cpup)
282{
283 if (*cpup == tick_do_timer_cpu) {
284 int cpu = cpumask_first(cpu_online_mask);
285
286 tick_do_timer_cpu = (cpu < nr_cpu_ids) ? cpu :
287 TICK_DO_TIMER_NONE;
288 }
289}
290
291/*
277 * Shutdown an event device on a given cpu: 292 * Shutdown an event device on a given cpu:
278 * 293 *
279 * This is called on a life CPU, when a CPU is dead. So we cannot 294 * 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)
297 clockevents_exchange_device(dev, NULL); 312 clockevents_exchange_device(dev, NULL);
298 td->evtdev = NULL; 313 td->evtdev = NULL;
299 } 314 }
300 /* Transfer the do_timer job away from this cpu */
301 if (*cpup == tick_do_timer_cpu) {
302 int cpu = cpumask_first(cpu_online_mask);
303
304 tick_do_timer_cpu = (cpu < nr_cpu_ids) ? cpu :
305 TICK_DO_TIMER_NONE;
306 }
307 spin_unlock_irqrestore(&tick_device_lock, flags); 315 spin_unlock_irqrestore(&tick_device_lock, flags);
308} 316}
309 317
@@ -357,6 +365,10 @@ static int tick_notify(struct notifier_block *nb, unsigned long reason,
357 tick_broadcast_oneshot_control(reason); 365 tick_broadcast_oneshot_control(reason);
358 break; 366 break;
359 367
368 case CLOCK_EVT_NOTIFY_CPU_DYING:
369 tick_handover_do_timer(dev);
370 break;
371
360 case CLOCK_EVT_NOTIFY_CPU_DEAD: 372 case CLOCK_EVT_NOTIFY_CPU_DEAD:
361 tick_shutdown_broadcast_oneshot(dev); 373 tick_shutdown_broadcast_oneshot(dev);
362 tick_shutdown_broadcast(dev); 374 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);
134 * value. We do this unconditionally on any cpu, as we don't know whether the 134 * value. We do this unconditionally on any cpu, as we don't know whether the
135 * cpu, which has the update task assigned is in a long sleep. 135 * cpu, which has the update task assigned is in a long sleep.
136 */ 136 */
137void tick_nohz_update_jiffies(void) 137static void tick_nohz_update_jiffies(void)
138{ 138{
139 int cpu = smp_processor_id(); 139 int cpu = smp_processor_id();
140 struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); 140 struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);