Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 6.6 02/47] hwtracing: hisi_ptt: Don't try to attach a task | Date | Mon, 11 Dec 2023 08:50:03 -0500 |
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From: Yicong Yang <yangyicong@hisilicon.com>
[ 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> --- 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 7d2127d86c728..1d066ce8358f0 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -1000,6 +1000,9 @@ 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; -- 2.42.0
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