linux-kernel - Re: [PATCH 0/4] [GIT PULL] tracing: recursion and compile fixes

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Date:	Mon, 20 Apr 2009 15:53:13 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/4] [GIT PULL] tracing: recursion and compile fixes


On Mon, 20 Apr 2009, Frederic Weisbecker wrote:

> On Mon, Apr 20, 2009 at 09:28:03PM +0200, Ingo Molnar wrote:
> > [   16.176013] Call Trace:
> > [   16.176013]  [<80944340>] ? printk+0x15/0x1d
> > [   16.176013]  [<803a410a>] _raw_spin_lock+0x19a/0x1b0
> > [   16.176013]  [<80947bb7>] _spin_lock_irqsave+0x57/0x70
> > [   16.176013]  [<8012b2ca>] __wake_up+0x1a/0x50
> > [   16.176013]  [<8019392f>] trace_wake_up+0x2f/0x40
> 
> 
> The function tracer, used in the selftest, uses trace_current_buffer_unlock_commit
> which in turn calls trace_wake_up.
> 
> The function tracer shouldn't call trace_wake_up() (might hold
> the rq lock already).

Ug, I meant to update that :-p


> 
> I'm preparing a fix.
> 

Thanks,

-- Steve

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