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authorIngo Molnar <mingo@elte.hu>2010-09-09 20:40:06 +0200
committerIngo Molnar <mingo@elte.hu>2010-09-09 20:40:08 +0200
commit2aa61274efb9f532deaebc9812675a27af1994cb (patch)
treec2f70525dc152e0ddce60f1a3021473cc6a3f298 /kernel/watchdog.c
parent359d5106a2ff4ffa2ba129ec8f54743c341dabfc (diff)
parent5e11637e2c929e34dcc0fbbfb48bdb638937701a (diff)
Merge branch 'perf/urgent' into perf/core
Merge reason: Pick up pending fixes before applying dependent new changes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/watchdog.c')
-rw-r--r--kernel/watchdog.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 5b1ee4f4ca0..fa71aebda4f 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -121,7 +121,7 @@ static void __touch_watchdog(void)
void touch_softlockup_watchdog(void)
{
- __get_cpu_var(watchdog_touch_ts) = 0;
+ __raw_get_cpu_var(watchdog_touch_ts) = 0;
}
EXPORT_SYMBOL(touch_softlockup_watchdog);
@@ -141,7 +141,14 @@ void touch_all_softlockup_watchdogs(void)
#ifdef CONFIG_HARDLOCKUP_DETECTOR
void touch_nmi_watchdog(void)
{
- __get_cpu_var(watchdog_nmi_touch) = true;
+ if (watchdog_enabled) {
+ unsigned cpu;
+
+ for_each_present_cpu(cpu) {
+ if (per_cpu(watchdog_nmi_touch, cpu) != true)
+ per_cpu(watchdog_nmi_touch, cpu) = true;
+ }
+ }
touch_softlockup_watchdog();
}
EXPORT_SYMBOL(touch_nmi_watchdog);
@@ -422,6 +429,9 @@ static int watchdog_enable(int cpu)
wake_up_process(p);
}
+ /* if any cpu succeeds, watchdog is considered enabled for the system */
+ watchdog_enabled = 1;
+
return 0;
}
@@ -444,9 +454,6 @@ static void watchdog_disable(int cpu)
per_cpu(softlockup_watchdog, cpu) = NULL;
kthread_stop(p);
}
-
- /* if any cpu succeeds, watchdog is considered enabled for the system */
- watchdog_enabled = 1;
}
static void watchdog_enable_all_cpus(void)