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| author |   Frederic Weisbecker <frederic@kernel.org> | 2018-02-21 05:17:26 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2018-02-21 09:49:08 +0100 |
| commit | 1bda3f8087fce9063da0b8aef87f17a3fe541aca (patch) | |
| tree | edc54db089d5a761a3fb40abad0fea3b8eb9b5a0 /include/linux/sched | |
| parent | nohz: Allow to check if remote CPU tick is stopped (diff) | |
| download | linux-dev-1bda3f8087fce9063da0b8aef87f17a3fe541aca.tar.xz linux-dev-1bda3f8087fce9063da0b8aef87f17a3fe541aca.zip | |
sched/isolation: Isolate workqueues when "nohz_full=" is set
As we prepare for offloading the residual 1hz scheduler ticks to
workqueue, let's affine those to housekeepers so that they don't
interrupt the CPUs that don't want to be disturbed.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Link: http://lkml.kernel.org/r/1519186649-3242-5-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/isolation.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index d849431c8060..4a6582c27dea 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -12,6 +12,7 @@ enum hk_flags { HK_FLAG_SCHED = (1 << 3), HK_FLAG_TICK = (1 << 4), HK_FLAG_DOMAIN = (1 << 5), + HK_FLAG_WQ = (1 << 6), }; #ifdef CONFIG_CPU_ISOLATION |