Messages in this thread | | | From | "Liang, Kan" <> | Subject | RE: [PATCH V6 01/17] perf, x86: Reduce lbr_sel_map size | Date | Tue, 4 Nov 2014 01:07:39 +0000 |
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Hi Peter,
Did you get a chance to review the rest of the patch set?
Thanks, Kan > > On Sun, Oct 19, 2014 at 05:54:56PM -0400, Kan Liang wrote: > > This should still very much have: > > From: Yan, Zheng <zheng.z.yan@intel.com> > > Seeing how you did not write this patch, probably true for all the others > too, although I've not checked yet. > > > 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@intel.com> > > Signed-off-by: Kan Liang <kan.liang@intel.com> > > Reviewed-by: Stephane Eranian <eranian@google.com> > > ---
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