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:Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by:
Frederic Weisbecker <frederic@kernel.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Acked-by:
Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210512232924.150322-8-frederic@kernel.org Signed-off-by:
Yunfeng Ye <yeyunfeng@huawei.com> Reviewed-by:
Chao Liu <liuchao173@huawei.com> Reviewed-by:
Chen Hui <judy.chenhui@huawei.com> Acked-by:
Xie XiuQi <xiexiuqi@huawei.com> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com>
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