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authorFrederic Weisbecker <fweisbec@gmail.com>2015-09-04 15:45:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-04 16:54:41 -0700
commit314b08ff5205420d956d14657e16d92c460a6f21 (patch)
treedd8ee7cf729c2c5034d7fc5ec05031d9b58815ac /kernel
parent230ec93909f00678401cb2d63b8b95f1dea68e40 (diff)
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 <fweisbec@gmail.com> Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ulrich Obergfell <uobergfe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/watchdog.c6
1 files 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