aboutsummaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-19 09:47:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-19 09:47:18 -0800
commit3cd312c3e887b4bee2d94668a481b3d19c07732c (patch)
treec8978186da2155f7752de79a2cd5b59e3e298ce8 /kernel
parentecd5907a200b18aeddac68b8c734b8ad4c931205 (diff)
parentcf1e367ee84e02ac349ad0858eb65e8a6a511c8b (diff)
downloadvexpress-lsk-3cd312c3e887b4bee2d94668a481b3d19c07732c.tar.gz
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: timers: Remove duplicate setting of new_base in __mod_timer() clockevents: Prevent clockevent_devices list corruption on cpu hotplug
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/clockevents.c18
-rw-r--r--kernel/timer.c2
2 files changed, 15 insertions, 5 deletions
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 3d5fc0fd1cc..6f740d9f094 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -238,8 +238,9 @@ void clockevents_exchange_device(struct clock_event_device *old,
*/
void clockevents_notify(unsigned long reason, void *arg)
{
- struct list_head *node, *tmp;
+ struct clock_event_device *dev, *tmp;
unsigned long flags;
+ int cpu;
raw_spin_lock_irqsave(&clockevents_lock, flags);
clockevents_do_notify(reason, arg);
@@ -250,8 +251,19 @@ void clockevents_notify(unsigned long reason, void *arg)
* Unregister the clock event devices which were
* released from the users in the notify chain.
*/
- list_for_each_safe(node, tmp, &clockevents_released)
- list_del(node);
+ list_for_each_entry_safe(dev, tmp, &clockevents_released, list)
+ list_del(&dev->list);
+ /*
+ * Now check whether the CPU has left unused per cpu devices
+ */
+ cpu = *((int *)arg);
+ list_for_each_entry_safe(dev, tmp, &clockevent_devices, list) {
+ if (cpumask_test_cpu(cpu, dev->cpumask) &&
+ cpumask_weight(dev->cpumask) == 1) {
+ BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
+ list_del(&dev->list);
+ }
+ }
break;
default:
break;
diff --git a/kernel/timer.c b/kernel/timer.c
index 5db5a8d2681..15533b79239 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -656,8 +656,6 @@ __mod_timer(struct timer_list *timer, unsigned long expires,
debug_activate(timer, expires);
- new_base = __get_cpu_var(tvec_bases);
-
cpu = smp_processor_id();
#if defined(CONFIG_NO_HZ) && defined(CONFIG_SMP)