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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2015-09-04 15:45:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 16:54:41 -0700 |
| commit | 314b08ff5205420d956d14657e16d92c460a6f21 (patch) | |
| tree | dd8ee7cf729c2c5034d7fc5ec05031d9b58815ac /kernel/watchdog.c | |
| parent | 230ec93909f00678401cb2d63b8b95f1dea68e40 (diff) | |
| download | lwn-314b08ff5205420d956d14657e16d92c460a6f21.tar.gz lwn-314b08ff5205420d956d14657e16d92c460a6f21.zip | |
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/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 6 |
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 |