On Sat, 23 May 2020 at 23:35, Andi Kleen wrote:
>
> Anand K Mistry writes:
> > }
> >
> > + done_fd = eventfd(0, EFD_NONBLOCK);
>
> This will make perf depend on a recent glibc or other library
> that implements eventfd. Wouldn't surprise me if some kind
> of build time check is needed f
Anand K Mistry writes:
> }
>
> + done_fd = eventfd(0, EFD_NONBLOCK);
This will make perf depend on a recent glibc or other library
that implements eventfd. Wouldn't surprise me if some kind
of build time check is needed for this to pass all of Arnaldo's
built tests.
-Andi
Em Wed, May 13, 2020 at 01:39:41PM +0200, Jiri Olsa escreveu:
> On Wed, May 13, 2020 at 12:20:23PM +1000, Anand K Mistry wrote:
> > The setting and checking of 'done' contains a rare race where the signal
> > handler setting 'done' is run after checking to break the loop, but
> > before waiting in
Em Wed, May 13, 2020 at 01:39:41PM +0200, Jiri Olsa escreveu:
> On Wed, May 13, 2020 at 12:20:23PM +1000, Anand K Mistry wrote:
> > The setting and checking of 'done' contains a rare race where the signal
> > handler setting 'done' is run after checking to break the loop, but
> > before waiting in
On Wed, May 13, 2020 at 12:20:23PM +1000, Anand K Mistry wrote:
> The setting and checking of 'done' contains a rare race where the signal
> handler setting 'done' is run after checking to break the loop, but
> before waiting in evlist__poll(). In this case, the main loop won't wake
> up until eith
The setting and checking of 'done' contains a rare race where the signal
handler setting 'done' is run after checking to break the loop, but
before waiting in evlist__poll(). In this case, the main loop won't wake
up until either another signal is sent, or the perf data fd causes a
wake up.
The fo
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