40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From 5fb3efe86694b0340b9bf17b060022495bafdb00 Mon Sep 17 00:00:00 2001
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From: Junhao He <hejunhao3@huawei.com>
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Date: Tue, 20 Jun 2023 22:06:43 +0800
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Subject: [PATCH 17/19] hwtracing: hisi_ptt: Keep to advertise
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PERF_PMU_CAP_EXCLUSIVE
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driver inclusion
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category: bugfix
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bugzilla: https://gitee.com/openeuler/kernel/issues/I7F2F2
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CVE: NA
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--------------------------------
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Keep to advertise PERF_PMU_CAP_EXCLUSIVE. Such pmus can only have one
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event scheduled at a time, and the perf tool will report device busy.
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Signed-off-by: Junhao He <hejunhao3@huawei.com>
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Signed-off-by: YunYi Yang <yangyunyi2@huawei.com>
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---
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drivers/hwtracing/ptt/hisi_ptt.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c
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index f8aa66e37a4e..ea981afb55fe 100644
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--- a/drivers/hwtracing/ptt/hisi_ptt.c
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+++ b/drivers/hwtracing/ptt/hisi_ptt.c
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@@ -1243,7 +1243,8 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt)
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hisi_ptt->hisi_ptt_pmu = (struct pmu) {
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.module = THIS_MODULE,
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- .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
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+ .capabilities = PERF_PMU_CAP_NO_EXCLUDE |
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+ PERF_PMU_CAP_EXCLUSIVE,
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.task_ctx_nr = perf_sw_context,
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.attr_groups = hisi_ptt_pmu_groups,
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.event_init = hisi_ptt_pmu_event_init,
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--
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2.27.0
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