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

[Andy Lutomirski]

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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