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From: Thomas Gleixner <tglx@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org, pq@iki.fi, proski@gnu.org,
	sandmann@redhat.com, a.p.zijlstra@chello.nl,
	Steven Rostedt <srostedt@redhat.com>
Subject: Re: [PATCH 1/5] ftrace: limit use of check pages
Date: Tue, 27 May 2008 17:34:04 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.1.10.0805271733120.3295@apollo.tec.linutronix.de> (raw)
In-Reply-To: <20080522042301.622087604@goodmis.org>

On Thu, 22 May 2008, Steven Rostedt wrote:

> The check_pages function is called often enough that it can cause problems
> with trace outputs or even bringing the system to a halt.
> 
> This patch limits the check_pages to the places that are most likely to
> have problems. The check is made at the flip between the global array and
> the max save array, as well as when the size of the buffers changes and
> the self tests.
> 
> This patch also removes the BUG_ON from check_pages and replaces it with
> a WARN_ON and disabling of the tracer.

Applied and fixed the typo.
 
> +		tracing_disabled = 0;		\

Thanks,
	tglx

  parent reply	other threads:[~2008-05-27 15:35 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-22  4:22 [PATCH 0/5] ftrace clean ups Steven Rostedt
2008-05-22  4:22 ` [PATCH 1/5] ftrace: limit use of check pages Steven Rostedt
2008-05-22 17:38   ` Pekka Paalanen
2008-05-22 17:43     ` Steven Rostedt
2008-05-22 18:06     ` [PATCH] ftrace: fix check_pages disable set Steven Rostedt
2008-05-27 15:34   ` Thomas Gleixner [this message]
2008-05-22  4:22 ` [PATCH 2/5] ftrace: remove wakeup functions from sched_switch tracer Steven Rostedt
2008-05-22  9:46   ` Peter Zijlstra
2008-05-22  4:22 ` [PATCH 3/5] ftrace: move ftrace_special to trace.c Steven Rostedt
2008-05-22  4:22 ` [PATCH 4/5] ftrace: add function tracing to wake up tracing Steven Rostedt
2008-05-22  4:22 ` [PATCH 5/5] ftrace: remove printks from irqsoff trace Steven Rostedt

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