watchdog: move definition of 'watchdog_proc_mutex' outside of proc_dowatchdog()
This series removes proc_dowatchdog(). Since multiple new functions need
the 'watchdog_proc_mutex' to serialize access to the watchdog parameters
in /proc/sys/kernel, move the mutex outside of any function.
Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index dcc4990..28c833b 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -701,6 +701,8 @@
}
+static DEFINE_MUTEX(watchdog_proc_mutex);
+
/*
* proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh
*/
@@ -710,7 +712,6 @@
{
int err, old_thresh, old_enabled;
bool old_hardlockup;
- static DEFINE_MUTEX(watchdog_proc_mutex);
mutex_lock(&watchdog_proc_mutex);
old_thresh = ACCESS_ONCE(watchdog_thresh);