Unverified Commit 6509a1c6 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!14897 perf/x86/intel/ds: Unconditionally drain PEBS DS when changing PEBS_DATA_CFG 

Merge Pull Request from: @ci-robot 
 
PR sync from: Luo Gengkun <luogengkun2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XMFPUI3P4ACEFOABMQIQTHI7Y7667G6P/ 
 
https://gitee.com/openeuler/kernel/issues/IBIHJJ 
 
Link:https://gitee.com/openeuler/kernel/pulls/14897

 

Reviewed-by: default avatarXu Kuohai <xukuohai@huawei.com>
Reviewed-by: default avatarYe Weihua <yeweihua4@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents fdfe6e8e 3b88546d

arch/x86/events/intel/ds.c

+1 −1
Original line number Diff line number Diff line
@@ -1354,7 +1354,7 @@ void intel_pmu_pebs_enable(struct perf_event *event) 
			 * hence we need to drain when changing said

			 * size.

			 */

			intel_pmu_drain_large_pebs(cpuc);

			intel_pmu_drain_pebs_buffer();

			adaptive_pebs_record_size_update();

			wrmsrl(MSR_PEBS_DATA_CFG, pebs_data_cfg);

			cpuc->active_pebs_data_cfg = pebs_data_cfg;