Re: [PATCH V5 01/16] perf, x86: Reduce lbr_sel_map size

[Peter Zijlstra]

On Wed, Sep 10, 2014 at 10:08:58AM -0400, kan.liang@xxxxxxxxx wrote:
> From: Kan Liang <kan.liang@xxxxxxxxx>

Uhm, I'm very sure Zheng Yan wrote this.. you cannot just add your from
on that.

> 
> The index of lbr_sel_map is bit value of perf branch_sample_type.
> PERF_SAMPLE_BRANCH_MAX is 1024 at present, so each lbr_sel_map uses
> 4096 bytes. By using bit shift as index, we can reduce lbr_sel_map
> size to 40 bytes. This patch defines 'bit shift' for branch types,
> and use 'bit shift' to define lbr_sel_maps.
> 
> Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
> Reviewed-by: Stephane Eranian <eranian@xxxxxxxxxx>

And you're sending me this patch, so I would have expected a SoB from
you here.
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