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

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Message-ID: <530D53EF.9090706@amacapital.net>
Date:	Tue, 25 Feb 2014 18:39:43 -0800
From:	Andy Lutomirski <luto@...capital.net>
To:	"Yan, Zheng" <zheng.z.yan@...el.com>, linux-kernel@...r.kernel.org
CC:	a.p.zijlstra@...llo.nl, mingo@...nel.org, acme@...radead.org,
	eranian@...gle.com, andi@...stfloor.org
Subject: Re: [PATCH v3 00/14] perf, x86: Haswell LBR call stack support

On 02/17/2014 10:07 PM, Yan, Zheng wrote:
> 
> This patch series adds LBR call stack support. User can enabled/disable
> this through an sysfs attribute file in the CPU PMU directory:
>  echo 1 > /sys/bus/event_source/devices/cpu/lbr_callstack 

This seems like an unpleasant way to control this.  It would be handy to
be able to control this as an option to perf record.

--Andy
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