linux-kernel - Re: Kaffeine problem with CFS

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Date:	Wed, 18 Apr 2007 11:13:48 +0200
From:	"Christoph Pfister" <christophpfister@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
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

2007/4/18, Ingo Molnar <mingo@...e.hu>:
>
> * Christoph Pfister <christophpfister@...il.com> wrote:
>
> > >backtrace:
> > >
> > > #0  0xffffe410 in __kernel_vsyscall ()
> > > #1  0x4a2510c6 in pthread_cond_wait@@GLIBC_2.3.2 () from
> > > /lib/libpthread.so.0
> > > #2  0xb79fd1a8 in QWidget::setUpdatesEnabled () from /usr/lib/libxine.so.1
> > > #3  0xb7a030ab in QWidget::setUpdatesEnabled () from /usr/lib/libxine.so.1
> > > #4  0x4a24d2db in start_thread () from /lib/libpthread.so.0
> > > #5  0x4a05820e in clone () from /lib/libc.so.6
> >
> > This backtrace is useless - QWidget::setUpdatesEnabled() is certainly
> > _not_ defined in libxine. So the function names in #2 and #3 are wrong
> > because the addresses seem to belong to libxine.
>
> are the updated backtraces in the followup mail i just sent more useful?
> (I still have that stuck session running so i can whatever debugging
> you'd like to see done.)

QWidget::setUpdatesEnabled() is (wrongly) present in every thread
except the main. So I'm afraid there's nothing which can be done :-/
Btw the main thread is waiting for the first frame being displayed
after the seek.

>         Ingo

Christoph
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