On Wed, Aug 17, 2022 at 03:14:54PM +0200, Marco Elver wrote:
> On Wed, 17 Aug 2022 at 15:03, Peter Zijlstra wrote:
> >
> > On Mon, Jul 04, 2022 at 05:05:11PM +0200, Marco Elver wrote:
> > > +static bool bp_constraints_is_locked(struct perf_event *bp)
> > > +{
> > > + struct mutex *tsk_mtx = ge
On Mon, Jul 04, 2022 at 05:05:11PM +0200, Marco Elver wrote:
> +static bool bp_constraints_is_locked(struct perf_event *bp)
> +{
> + struct mutex *tsk_mtx = get_task_bps_mutex(bp);
> +
> + return percpu_is_write_locked(&bp_cpuinfo_sem) ||
> +(tsk_mtx ? mutex_is_locked(tsk_mtx) :
