Messages in this thread Patch in this message | | | From | Yicong Yang <> | Subject | [PATCH 4/5] hwtracing: hisi_ptt: Don't try to attach a task | Date | Wed, 9 Aug 2023 16:18:24 +0800 |
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From: Yicong Yang <yangyicong@hisilicon.com>
PTT is an uncore PMU and shouldn't be attached to any task. Block the usage in pmu::event_init().
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> --- drivers/hwtracing/ptt/hisi_ptt.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index 3aba7bb6e548..916686c6a9c8 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -1003,6 +1003,9 @@ static int hisi_ptt_pmu_event_init(struct perf_event *event) return -EOPNOTSUPP; } + if (event->attach_state & PERF_ATTACH_TASK) + return -EOPNOTSUPP; + if (event->attr.type != hisi_ptt->hisi_ptt_pmu.type) return -ENOENT; -- 2.24.0
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