linux-kernel - Re: [PATCH v3 00/14] perf, x86: Haswell LBR call stack support

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Message-ID: <530E3E47.8010205@gmail.com>
Date:	Wed, 26 Feb 2014 12:19:35 -0700
From:	David Ahern <dsahern@...il.com>
To:	Andy Lutomirski <luto@...capital.net>,
	Andi Kleen <andi@...stfloor.org>
CC:	Stephane Eranian <eranian@...gle.com>,
	"Yan, Zheng" <zheng.z.yan@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>
Subject: Re: [PATCH v3 00/14] perf, x86: Haswell LBR call stack support

On 2/26/14, 11:59 AM, Andy Lutomirski wrote:

> I wonder if anyone who uses perf for userspace profiling *ever* uses
> FP and gets away with it.  There's precious little userspace software
> compiled with frame pointers these days on most architectures.

yes and yes. With control over the entire stack we are making sure 
frame-pointers are enabled as much as possible.

David

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