From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace
Date: Sun, 22 Mar 2009 21:41:56 +0100 [thread overview]
Message-ID: <20090322204156.GA27113@elte.hu> (raw)
In-Reply-To: <20090322194153.GA10112@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> found another, unrelated lockup with the event tracer:
>
> europe:/debug/tracing/events/sched/sched_wakeup_new> cat enable
> 0
> europe:/debug/tracing/events/sched/sched_wakeup_new> echo 1 > enable
> europe:/debug/tracing/events/sched/sched_wakeup_new> sync
> europe:/debug/tracing/events/sched/sched_wakeup_new> cat
> ../../../trace_pipe
> <...>-2870 [000] 688.730160: sched_wakeup_new: task
> bash:2898 [120] success=1
> <...>-2870 [001] 689.945375: sched_wakeup_new: task
> bash:2899 [120] success=1
>
> [hard lockup]
ok, tracked it down - it's the new trace_wake_up() from within
wake_up_new_task() => bad idea.
I think this was introduced via:
6eaaa5d: tracing/core: use appropriate waiting on trace_pipe
Ingo
next prev parent reply other threads:[~2009-03-22 20:42 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-18 3:14 [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace Steven Rostedt
2009-03-18 3:14 ` [PATCH 1/5] ring-buffer: add api to allow a tracer to change clock source Steven Rostedt
2009-03-18 3:14 ` [PATCH 2/5] tracing: add global-clock option to provide cross CPU clock to traces Steven Rostedt
2009-03-18 3:14 ` [PATCH 3/5] tracing: optimization of branch tracer Steven Rostedt
2009-03-18 3:14 ` [PATCH 4/5] tracing: make sched_switch stop/start light weight Steven Rostedt
2009-03-18 3:14 ` [PATCH 5/5] tracing: make power tracer start/stop methods lighter weight Steven Rostedt
2009-03-18 5:59 ` [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace Ingo Molnar
2009-03-18 7:39 ` Ingo Molnar
2009-03-19 7:33 ` Ingo Molnar
2009-03-19 17:21 ` Steven Rostedt
2009-03-20 17:43 ` Paul E. McKenney
2009-03-20 18:36 ` Ingo Molnar
2009-03-20 18:38 ` Ingo Molnar
2009-03-20 19:19 ` Paul E. McKenney
2009-03-20 19:27 ` Ingo Molnar
2009-03-20 19:41 ` Paul E. McKenney
2009-03-20 19:46 ` Frederic Weisbecker
2009-03-20 19:54 ` Ingo Molnar
2009-03-20 20:48 ` Frederic Weisbecker
2009-03-20 21:05 ` Steven Rostedt
2009-03-21 10:01 ` Ingo Molnar
2009-03-21 16:58 ` Ingo Molnar
2009-03-21 17:25 ` Steven Rostedt
2009-03-21 19:07 ` Paul E. McKenney
2009-03-21 20:09 ` Ingo Molnar
2009-03-21 21:01 ` Paul E. McKenney
2009-03-22 14:24 ` Ingo Molnar
2009-03-22 15:06 ` Ingo Molnar
2009-03-22 17:02 ` Ingo Molnar
2009-03-22 18:33 ` Steven Rostedt
2009-03-22 19:52 ` Ingo Molnar
2009-03-23 18:44 ` Steven Rostedt
2009-03-21 17:32 ` Frederic Weisbecker
2009-03-21 17:44 ` Steven Rostedt
2009-03-21 17:53 ` Frederic Weisbecker
2009-03-21 18:17 ` Steven Rostedt
2009-03-21 20:03 ` Frederic Weisbecker
2009-03-21 18:18 ` Ingo Molnar
2009-03-21 20:09 ` Frederic Weisbecker
2009-03-21 20:46 ` Frederic Weisbecker
2009-03-22 19:41 ` Ingo Molnar
2009-03-22 20:41 ` Ingo Molnar [this message]
2009-03-20 21:39 ` Paul E. McKenney
2009-03-20 17:05 ` Frederic Weisbecker
2009-03-20 17:57 ` Frederic Weisbecker
2009-03-20 18:22 ` Steven Rostedt
2009-03-20 18:39 ` Frederic Weisbecker
2009-03-20 18:42 ` Ingo Molnar
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