Messages in this thread Patch in this message | | | From | Zqiang <> | Subject | [PATCH V2] watchdog: ignore nohz_full cores in new cpumask | Date | Tue, 16 Nov 2021 14:15:36 +0800 |
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If the nohz_full is enabled, when update watchdog_mask, the nohz_full cores should be ignored.
Signed-off-by: Zqiang <qiang.zhang1211@gmail.com> --- v1->v2: if watchdog_cpumask became empty, set housekeeping_cpumask.
kernel/watchdog.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index ad912511a0c0..6f0c5528b399 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -628,7 +628,9 @@ void lockup_detector_soft_poweroff(void) static void proc_watchdog_update(void) { /* Remove impossible cpus to keep sysctl output clean. */ - cpumask_and(&watchdog_cpumask, &watchdog_cpumask, cpu_possible_mask); + cpumask_and(&watchdog_cpumask, &watchdog_cpumask, housekeeping_cpumask(HK_FLAG_TIMER)); + if (cpumask_empty(&watchdog_cpumask)) + cpumask_copy(&watchdog_cpumask, housekeeping_cpumask(HK_FLAG_TIMER)); lockup_detector_reconfigure(); } -- 2.17.1
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