Commit 118d1014 authored by Junhao He's avatar Junhao He
Browse files

hwtracing: hisi_ptt: Keep to advertise PERF_PMU_CAP_EXCLUSIVE 

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7F2F2


CVE: NA

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

Keep to advertise PERF_PMU_CAP_EXCLUSIVE. Such pmus can only have one
event scheduled at a time, and the perf tool will report device busy.

Signed-off-by: default avatarJunhao He <hejunhao3@huawei.com>
parent 5240ef4e

drivers/hwtracing/ptt/hisi_ptt.c

+1 −1
Original line number Diff line number Diff line
@@ -1215,7 +1215,7 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt) 


	hisi_ptt->hisi_ptt_pmu = (struct pmu) {

		.module		= THIS_MODULE,

		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,

		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE | PERF_PMU_CAP_EXCLUSIVE,

		.task_ctx_nr	= perf_sw_context,

		.attr_groups	= hisi_ptt_pmu_groups,

		.event_init	= hisi_ptt_pmu_event_init,