From: Peter Zijlstra <peterz@infradead.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
David Miller <davem@davemloft.net>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
mingo@elte.hu, acme@redhat.com, paulus@samba.org
Subject: Re: Random scheduler/unaligned accesses crashes with perf lock
Date: Tue, 06 Apr 2010 12:57:35 +0000 [thread overview]
Message-ID: <1270558655.1595.265.camel@laptop> (raw)
In-Reply-To: <1270558450.6369.30.camel@marge.simson.net>
On Tue, 2010-04-06 at 14:54 +0200, Mike Galbraith wrote:
> > ARGH.. yes
> >
> > Also, I guess that should live in perf_output_lock/unlock() not in
> > perf_event_task_output().
> >
> > Egads, how to fix that
>
> Damn, so deadlock fix isn't a fix. No idea.
well it is,. but it breaks sparc..
I'm currently compile testing a bunch to fix all that up by doing what
davem suggested: local_irq_save_nmi()/local_irq_restore_nmi().
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
David Miller <davem@davemloft.net>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
mingo@elte.hu, acme@redhat.com, paulus@samba.org
Subject: Re: Random scheduler/unaligned accesses crashes with perf lock events on sparc 64
Date: Tue, 06 Apr 2010 14:57:35 +0200 [thread overview]
Message-ID: <1270558655.1595.265.camel@laptop> (raw)
In-Reply-To: <1270558450.6369.30.camel@marge.simson.net>
On Tue, 2010-04-06 at 14:54 +0200, Mike Galbraith wrote:
> > ARGH.. yes
> >
> > Also, I guess that should live in perf_output_lock/unlock() not in
> > perf_event_task_output().
> >
> > Egads, how to fix that
>
> Damn, so deadlock fix isn't a fix. No idea.
well it is,. but it breaks sparc..
I'm currently compile testing a bunch to fix all that up by doing what
davem suggested: local_irq_save_nmi()/local_irq_restore_nmi().
next prev parent reply other threads:[~2010-04-06 12:57 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-04 12:18 Random scheduler/unaligned accesses crashes with perf lock events Frederic Weisbecker
2010-04-04 12:18 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-04 12:21 ` Random scheduler/unaligned accesses crashes with perf lock Frederic Weisbecker
2010-04-04 12:21 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-05 1:00 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-05 1:00 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-05 6:57 ` Random scheduler/unaligned accesses crashes with perf lock Frederic Weisbecker
2010-04-05 6:57 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-05 19:22 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-05 19:22 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-05 19:40 ` Random scheduler/unaligned accesses crashes with perf lock Frederic Weisbecker
2010-04-05 19:40 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-05 20:46 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-05 20:46 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 2:15 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-06 2:15 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 13:41 ` Random scheduler/unaligned accesses crashes with perf lock Steven Rostedt
2010-04-06 13:41 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Steven Rostedt
2010-04-06 17:46 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-06 17:46 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 18:15 ` Random scheduler/unaligned accesses crashes with perf lock Steven Rostedt
2010-04-06 18:15 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Steven Rostedt
2010-04-06 21:17 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-06 21:17 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 9:50 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-06 9:50 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 10:19 ` Random scheduler/unaligned accesses crashes with perf lock Frederic Weisbecker
2010-04-06 10:19 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-06 10:28 ` Random scheduler/unaligned accesses crashes with perf lock David Miller
2010-04-06 10:28 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 David Miller
2010-04-06 11:12 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI Peter Zijlstra
2010-04-06 11:12 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI context Peter Zijlstra
2010-04-06 11:13 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI David Miller
2010-04-06 11:13 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI context David Miller
2010-04-06 11:20 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI Peter Zijlstra
2010-04-06 11:20 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI context Peter Zijlstra
2010-04-06 11:22 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI David Miller
2010-04-06 11:22 ` [RFC][PATCH] lockdep: WARN about local_irq_{en,dis}able in NMI context David Miller
2010-04-06 11:38 ` Random scheduler/unaligned accesses crashes with perf lock Frederic Weisbecker
2010-04-06 11:38 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Frederic Weisbecker
2010-04-06 11:51 ` Random scheduler/unaligned accesses crashes with perf lock Peter Zijlstra
2010-04-06 11:51 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Peter Zijlstra
2010-04-06 12:54 ` Random scheduler/unaligned accesses crashes with perf lock Mike Galbraith
2010-04-06 12:54 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Mike Galbraith
2010-04-06 12:57 ` Peter Zijlstra [this message]
2010-04-06 12:57 ` Peter Zijlstra
2010-04-06 18:04 ` Random scheduler/unaligned accesses crashes with perf lock Paul E. McKenney
2010-04-06 18:04 ` Random scheduler/unaligned accesses crashes with perf lock events on sparc 64 Paul E. McKenney
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