Commit 0cd3c939 authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Zheng Zengkai
Browse files

tick/nohz: Change signal tick dependency to wake up CPUs of member tasks

mainline inclusion
from mainline-5.14-rc1
commit 1e4ca26d
category: feature
feature: Deep isolation
bugzilla: https://gitee.com/openeuler/kernel/issues/I4N00D
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1e4ca26d367ae71743e25068e5cd8750ef3f5f7d



--------------------------------

Rather than waking up all nohz_full CPUs on the system, only wake up
the target CPUs of member threads of the signal.

Reduces interruptions to nohz_full CPUs.

Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarFrederic Weisbecker <frederic@kernel.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210512232924.150322-8-frederic@kernel.org


Signed-off-by: default avatarYunfeng Ye <yeyunfeng@huawei.com>
Reviewed-by: default avatarChao Liu <liuchao173@huawei.com>
Reviewed-by: default avatarChen Hui <judy.chenhui@huawei.com>
Acked-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 1682fd2e
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please to comment