Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

Alan Cox
2010-05-27T19:46:31Z

On Thu, 27 May 2010 20:29:26 +0100
Matthew Garrett <mjg59@srcf.ucam.org> wrote:

> On Thu, May 27, 2010 at 08:25:38PM +0100, Alan Cox wrote:
>
> > The scheduler can happily do this, the power management will also
> > recognize STOPPED processes as no impediment to suspend.
>
> But wakeup events won't be delivered to STOPped processes, and there's

Try the following

cat <pipe
kill -STOP catpid

echo "wombats are cool" > pipe
kill -CONT catpid

it will echo "wombats are cool"

The event was not lost.

> also the race of an application being in the middle of handling a wakeup
> event when you send it the signal.

sigmask()