Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 4/4] watchdog: Simplify housekeeping affinity with the appropriate mask | Date | Sat, 11 Jul 2015 17:52:32 +0200 |
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housekeeping_mask gathers all the CPUs that aren't part of the nohz_full set. This is exactly what we want the watchdog to be affine to without the need to use complicated cpumask operations.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ulrich Obergfell <uobergfe@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> --- kernel/watchdog.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index e5bb86f..d18330f 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -929,10 +929,8 @@ void __init lockup_detector_init(void) #ifdef CONFIG_NO_HZ_FULL if (tick_nohz_full_enabled()) { - if (!cpumask_empty(tick_nohz_full_mask)) - pr_info("Disabling watchdog on nohz_full cores by default\n"); - cpumask_andnot(&watchdog_cpumask, cpu_possible_mask, - tick_nohz_full_mask); + pr_info("Disabling watchdog on nohz_full cores by default\n"); + cpumask_copy(&watchdog_cpumask, housekeeping_mask); } else cpumask_copy(&watchdog_cpumask, cpu_possible_mask); #else -- 2.1.4
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