linux-kernel - Re: Kaffeine problem with CFS

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Message-ID: <20070418103757.GA2673@elte.hu>
Date:	Wed, 18 Apr 2007 12:37:57 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christoph Pfister <christophpfister@...il.com>
Cc:	S.Çağlar Onur <caglar@...dus.org.tr>,
	linux-kernel@...r.kernel.org,
	Michael Lothian <mike@...eburn.co.uk>,
	Christophe Thommeret <hftom@...e.fr>,
	Jurgen Kofler <kaffeine@....net>,
	Ulrich Drepper <drepper@...hat.com>
Subject: Re: Kaffeine problem with CFS


* Ingo Molnar <mingo@...e.hu> wrote:

> hm. I've reviewed all uses of demux_lock. ./src/xine-engine/demux.c 
> does this:

plus it does this too:

      pthread_mutex_unlock( &stream->demux_lock );
      xine_usec_sleep(100000);
      pthread_mutex_lock( &stream->demux_lock );

this would explain the nanosleep() strace entries. But the task stuck on 
demux_lock never gets the unlock event. Weird.

	Ingo
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