linux-kernel - Re: [for-next][PATCH 4/4] ftrace: Add more information to ftrace

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Message-ID: <20141105104935.GD5245@pd.tnic>
Date:	Wed, 5 Nov 2014 11:49:35 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Vojtech Pavlik <vojtech@...e.cz>,
	Seth Jennings <sjenning@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [for-next][PATCH 4/4] ftrace: Add more information to
 ftrace_bug() output

On Mon, Oct 27, 2014 at 02:27:06PM -0400, Steven Rostedt wrote:
> From: "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
> 
> With the introduction of the dynamic trampolines, it is useful that if
> things go wrong that ftrace_bug() produces more information about what
> the current state is. This can help debug issues that may arise.
> 
> Ftrace has lots of checks to make sure that the state of the system it
> touchs is exactly what it expects it to be. When it detects an abnormality
> it calls ftrace_bug() and disables itself to prevent any further damage.
> It is crucial that ftrace_bug() produces sufficient information that
> can be used to debug the situation.
> 
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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