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| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2011-01-28 11:00:32 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-01-31 13:22:43 +0100 |
| commit | 397357666de6b5b6adb5fa99f9758ec8cf30ac34 (patch) | |
| tree | ce7e63588928ae0fc3b72e12e5d4298b09916ddf /kernel/watchdog.c | |
| parent | 4135038a582c20ffdadfcf6564852e0b72a20968 (diff) | |
| download | lwn-397357666de6b5b6adb5fa99f9758ec8cf30ac34.tar.gz lwn-397357666de6b5b6adb5fa99f9758ec8cf30ac34.zip | |
watchdog: Fix sysctl consistency
If it was not possible to enable watchdog for any cpu, switch
watchdog_enabled back to 0, because it's visible via
kernel.watchdog sysctl.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: <stable@kernel.org>
LKML-Reference: <1296230433-6261-2-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index d9961ea1c3f4..c7e0049344bd 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -429,9 +429,6 @@ 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; } @@ -459,12 +456,16 @@ static void watchdog_disable(int cpu) static void watchdog_enable_all_cpus(void) { int cpu; - int result = 0; + + watchdog_enabled = 0; for_each_online_cpu(cpu) - result += watchdog_enable(cpu); + if (!watchdog_enable(cpu)) + /* if any cpu succeeds, watchdog is considered + enabled for the system */ + watchdog_enabled = 1; - if (result) + if (!watchdog_enabled) printk(KERN_ERR "watchdog: failed to be enabled on some cpus\n"); } |