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hwtracing: hisi_ptt: Don't try to attach a task

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[ Upstream commit aff787f64ad7cbb54614b51b82c682fe06411ef3 ]

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>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20231010084731.30450-5-yangyicong@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yicong Yang 2023-10-10 16:47:30 +08:00 committed by Greg Kroah-Hartman
parent 2e3fc2a45a
commit 63360763bf
1 changed files with 3 additions and 0 deletions
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3
drivers/hwtracing/ptt/hisi_ptt.c
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@ -659,6 +659,9 @@ 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;