[PATCH 3/3] lockup_detector: remove unnecessary panic_notifier

Don Zickus
2010-09-01T03:00:34Z

From: Akinobu Mita <akinobu.mita@gmail.com>

The panic notifer in lockup_detector just set did_panic to 1.
But did_panic is not used anywhere so we can just remove it.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Don Zickus <dzickus@redhat.com>
---
kernel/watchdog.c | 15 ---------------
1 files changed, 0 insertions(+), 15 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index db70647..fa71aeb 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -43,7 +43,6 @@ static DEFINE_PER_CPU(unsigned long, hrtimer_interrupts_saved);
static DEFINE_PER_CPU(struct perf_event *, watchdog_ev);
#endif

-static int __read_mostly did_panic;
static int __initdata no_watchdog;

@@ -187,18 +186,6 @@ static int is_softlockup(unsigned long touch_ts)
return 0;
}

-static int
-watchdog_panic(struct notifier_block *this, unsigned long event, void *ptr)
-{
- did_panic = 1;
-
- return NOTIFY_DONE;
-}
-
-static struct notifier_block panic_block = {
- .notifier_call = watchdog_panic,
-};
-
#ifdef CONFIG_HARDLOCKUP_DETECTOR
static struct perf_event_attr wd_hw_attr = {
.type = PERF_TYPE_HARDWARE,
@@ -571,8 +558,6 @@ static int __init spawn_watchdog_task(void)
cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
register_cpu_notifier(&cpu_nfb);

- atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
-
return 0;
}
early_initcall(spawn_watchdog_task);
--
1.7.2.2