linux-kernel - Re: [PATCH] perf: Avoid horrible stack usage

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Message-ID: <20141217153508.GC30905@twins.programming.kicks-ass.net>
Date:	Wed, 17 Dec 2014 16:35:08 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	mingo@...nel.org, linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] perf: Avoid horrible stack usage

On Wed, Dec 17, 2014 at 03:31:05PM +0100, Jiri Olsa wrote:
> looks like we could also sanitize the perf_ftrace_function_call
> in the same way.. like below (untested)
> 
> hum, I just noticed it actually has pt_regs arg ;-)

Bu if it has pt_regs should we not use that instead of filling one out
again?
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