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| author | Yicong Yang <yangyicong@hisilicon.com> | 2023-10-10 16:47:30 +0800 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2023-11-13 09:43:46 +0000 |
| commit | aff787f64ad7cbb54614b51b82c682fe06411ef3 (patch) | |
| tree | 55d286616f299f8f7d7dee84d01869892dedca04 | |
| parent | e0dd27ad8af00f147ac3c9de88e0687986afc3ea (diff) | |
| download | lwn-aff787f64ad7cbb54614b51b82c682fe06411ef3.tar.gz lwn-aff787f64ad7cbb54614b51b82c682fe06411ef3.zip | |
hwtracing: hisi_ptt: Don't try to attach a task
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
| -rw-r--r-- | drivers/hwtracing/ptt/hisi_ptt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index dbed4fd4e296..a991ecb7515a 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; |