Unverified Commit dfbbcd0d authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!11016 [sync] PR-10965: perf: Optimize perf_pmu_migrate_context() 

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/10965 
 
PR sync from: Liu Chuang <liuchuang40@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/RZMV3CIN64DEJ3URJPBLF52SGS7XSDBV/ 
 
https://gitee.com/openeuler/kernel/issues/IAL27E 
 
Link:https://gitee.com/openeuler/kernel/pulls/11016

 

Reviewed-by: default avatarYe Weihua <yeweihua4@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents d0e19787 7ce75d65

kernel/events/core.c

+35 −33
Original line number Diff line number Diff line
@@ -12341,6 +12341,7 @@ void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu) 
		list_add(&event->migrate_entry, &events);

	}



	if (!list_empty(&events)) {

		/*

		 * Wait for the events to quiesce before re-instating them.

		 */
@@ -12378,6 +12379,7 @@ void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu) 
			perf_install_in_context(dst_ctx, event, dst_cpu);

			get_ctx(dst_ctx);

		}

	}

	mutex_unlock(&dst_ctx->mutex);

	mutex_unlock(&src_ctx->mutex);

}