From 314b08ff5205420d956d14657e16d92c460a6f21 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 4 Sep 2015 15:45:09 -0700 Subject: [PATCH] watchdog: simplify housekeeping affinity with the appropriate mask 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. Signed-off-by: Frederic Weisbecker Reviewed-by: Chris Metcalf Cc: Thomas Gleixner Cc: Chris Metcalf Cc: Don Zickus Cc: Peter Zijlstra Cc: Ulrich Obergfell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/watchdog.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/kernel/watchdog.c b/kernel/watchdog.c index e5bb86fb0ea5..d18330fa4776 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 -- 2.20.1