perf tools: Add processor socket info to hist_entry and addr_location

This information will come from perf.data files of from the current
system, cached when needed, such as when the 'socket' sort order gets
introduced.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1441377946-44429-1-git-send-email-kan.liang@intel.com
[ Don't blindly use env->cpu[al.cpu].socket_id & use machine->env, fixes by Jiri & Arnaldo ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 3c2a399..7cf1cf7 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -90,6 +90,7 @@
 	struct comm		*comm;
 	u64			ip;
 	u64			transaction;
+	s32			socket;
 	s32			cpu;
 	u8			cpumode;