perf hists: Resort hist entries using group members for output
When event group is enabled, sorting hist entries on periods for output should consider groups members' period also. To do that, build period table using link/pair information and compare the table. Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1358845787-1350-6-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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