On Mon, Feb 01, 2021 at 10:42:47AM +0100, Dmitry Vyukov wrote:
> On Mon, Feb 1, 2021 at 10:22 AM Peter Zijlstra wrote:
> >
> > On Sun, Jan 31, 2021 at 12:14:02PM +0100, Dmitry Vyukov wrote:
> > > Hi,
> > >
> > > I would like to send a signal from a bpf program invoked from a
> > > perf_event. Ther
On Sun, Jan 31, 2021 at 12:14:02PM +0100, Dmitry Vyukov wrote:
> Hi,
>
> I would like to send a signal from a bpf program invoked from a
> perf_event. There is:
You can't. Sending signals requires sighand lock, and you're not allowed
to take locks from perf_event context.
