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

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Message-ID: <Pine.LNX.4.44L0.1005271723200.3239-100000@iolanthe.rowland.org>
Date:	Thu, 27 May 2010 17:24:28 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Matthew Garrett <mjg59@...f.ucam.org>
cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Florian Mickler <florian@...kler.org>,
	<felipe.balbi@...ia.com>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux PM <linux-pm@...ts.linux-foundation.org>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

On Thu, 27 May 2010, Matthew Garrett wrote:

> > > Doesn't help - I may be hit by the signal between the poll() unblocking 
> > > and me having the opportunity to call sigmask().
> > 
> > ppoll(). This is all existing solved stuff.
> 
> Isn't that the inverse of what we want? The application should default 
> to being SIGSTOPpable except in the case of it being in the process of 
> having a specific event delivered.

Would it help to divide the application into two processes, one of 
which receives events and the other does the drawing?

Alan Stern

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