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Merge branch 'linus' into core/locking

Browse source 
Reason: Pull in the semaphore related changes

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2010-10-12 17:27:20 +02:00
commit 37eca0d64a
1433 changed files with 20285 additions and 16307 deletions
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20
kernel/watchdog.c
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@ -122,7 +122,7 @@ 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);
@ -142,7 +142,14 @@ 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);
@ -206,6 +213,9 @@ static void watchdog_overflow_callback(struct perf_event *event, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
/* Ensure the watchdog never gets throttled */
event->hw.interrupts = 0;
if (__get_cpu_var(watchdog_nmi_touch) == true) {
__get_cpu_var(watchdog_nmi_touch) = false;
return;
@ -430,6 +440,9 @@ 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;
}
@ -452,9 +465,6 @@ 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)