The patch titled
Subject: watchdog: introduce the proc_watchdog_update() function
has been added to the -mm tree. Its filename is
watchdog-introduce-the-proc_watchdog_update-function.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/watchdog-introduce-the-proc_watchdog_update-function.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/watchdog-introduce-the-proc_watchdog_update-function.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Ulrich Obergfell <uobergfe@xxxxxxxxxx>
Subject: watchdog: introduce the proc_watchdog_update() function
This series introduces a separate handler for each watchdog parameter in
/proc/sys/kernel. The separate handlers need a common function that they
can call to update the run state of the lockup detectors, or to have the
lockup detectors use a new sample period.
Signed-off-by: Ulrich Obergfell <uobergfe@xxxxxxxxxx>
Signed-off-by: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/watchdog.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff -puN kernel/watchdog.c~watchdog-introduce-the-proc_watchdog_update-function kernel/watchdog.c
--- a/kernel/watchdog.c~watchdog-introduce-the-proc_watchdog_update-function
+++ a/kernel/watchdog.c
@@ -679,6 +679,29 @@ static void watchdog_disable_all_cpus(vo
}
/*
+ * Update the run state of the lockup detectors.
+ */
+static int proc_watchdog_update(void)
+{
+ int err = 0;
+
+ /*
+ * Watchdog threads won't be started if they are already active.
+ * The 'watchdog_running' variable in watchdog_*_all_cpus() takes
+ * care of this. If those threads are already active, the sample
+ * period will be updated and the lockup detectors will be enabled
+ * or disabled 'on the fly'.
+ */
+ if (watchdog_enabled && watchdog_thresh)
+ err = watchdog_enable_all_cpus(true);
+ else
+ watchdog_disable_all_cpus();
+
+ return err;
+
+}
+
+/*
* proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh
*/
_
Patches currently in -mm which might be from uobergfe@xxxxxxxxxx are
watchdog-new-definitions-and-variables-initialization.patch
watchdog-introduce-the-proc_watchdog_update-function.patch
watchdog-move-definition-of-watchdog_proc_mutex-outside-of-proc_dowatchdog.patch
watchdog-introduce-the-proc_watchdog_common-function.patch
watchdog-introduce-separate-handlers-for-parameters-in-proc-sys-kernel.patch
watchdog-implement-error-handling-for-failure-to-set-up-hardware-perf-events.patch
watchdog-enable-the-new-user-interface-of-the-watchdog-mechanism.patch
watchdog-clean-up-some-function-names-and-arguments.patch
watchdog-introduce-the-hardlockup_detector_disable-function.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
