diff options
| author | Yicong Yang <yangyicong@hisilicon.com> | 2023-10-10 11:47:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-20 13:51:39 +0300 |
| commit | bade0c1e7569f8efc9cfa1b29112f41e89e13835 (patch) | |
| tree | 5ce2504b3e01b01a5f6aaab3b20bbdd1fbc7ea39 /drivers/hwtracing | |
| parent | 5e67b92b8b2b9b5bdd126bdfed49f7bdad09329a (diff) | |
| download | linux-bade0c1e7569f8efc9cfa1b29112f41e89e13835.tar.xz | |
hwtracing: hisi_ptt: Don't try to attach a task
[ 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>
Diffstat (limited to 'drivers/hwtracing')
| -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; |