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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-24 21:21:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-24 21:21:49 +0200 |
| commit | 502adf5778f4151dcba3f64dd6ed322151f3712c (patch) | |
| tree | ad14adb37dedaefabdaf93b08ab9d32bc140ed81 | |
| parent | Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| parent | watchdog: Don't throttle the watchdog (diff) | |
| download | linux-502adf5778f4151dcba3f64dd6ed322151f3712c.tar.xz linux-502adf5778f4151dcba3f64dd6ed322151f3712c.zip | |
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
watchdog: Don't throttle the watchdog
tracing: Fix timer tracing
| -rw-r--r-- | include/trace/events/timer.h | 8 | ||||
| -rw-r--r-- | kernel/watchdog.c | 3 |
2 files changed, 9 insertions, 2 deletions
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h index c624126a9c8a..425bcfe56c62 100644 --- a/include/trace/events/timer.h +++ b/include/trace/events/timer.h @@ -81,14 +81,16 @@ TRACE_EVENT(timer_expire_entry, TP_STRUCT__entry( __field( void *, timer ) __field( unsigned long, now ) + __field( void *, function) ), TP_fast_assign( __entry->timer = timer; __entry->now = jiffies; + __entry->function = timer->function; ), - TP_printk("timer=%p now=%lu", __entry->timer, __entry->now) + TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now) ); /** @@ -200,14 +202,16 @@ TRACE_EVENT(hrtimer_expire_entry, TP_STRUCT__entry( __field( void *, hrtimer ) __field( s64, now ) + __field( void *, function) ), TP_fast_assign( __entry->hrtimer = hrtimer; __entry->now = now->tv64; + __entry->function = hrtimer->function; ), - TP_printk("hrtimer=%p now=%llu", __entry->hrtimer, + TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function, (unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now })) ); diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 613bc1f04610..0d53c8e853b1 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -206,6 +206,9 @@ 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; |