On Wed, 9 Aug 2023 16:18:24 +0800 Yicong Yang <yangyicong@xxxxxxxxxx> wrote: > From: Yicong Yang <yangyicong@xxxxxxxxxxxxx> > > 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@xxxxxxxxxxxxx> Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > --- > 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; >
