perf hists: Add struct hists pointer to struct hist_entry

Adding pointer back to the parent struct hists for struct hists_entry.

This will be useful in future for any hist_entry's data computation,
that depends on total data of its parent hists.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1349354994-17853-2-git-send-email-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 236bc9d98ff2..040f34c79a53 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -325,6 +325,7 @@ struct hist_entry *__hists__add_branch_entry(struct hists *self,
                 .parent = sym_parent,
                 .filtered = symbol__parent_filter(sym_parent),
                 .branch_info = bi,
+                .hists  = self,
         };
 
         return add_hist_entry(self, &entry, al, period);
@@ -346,6 +347,7 @@ struct hist_entry *__hists__add_entry(struct hists *self,
                 .period = period,
                 .parent = sym_parent,
                 .filtered = symbol__parent_filter(sym_parent),
+                .hists  = self,
         };
 
         return add_hist_entry(self, &entry, al, period);
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 12d634792de5..eb3959b8e9d9 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -79,6 +79,7 @@ struct hist_entry {
                 struct rb_root    sorted_chain;
         };
         struct branch_info      *branch_info;
+        struct hists            *hists;
         struct callchain_root   callchain[0];
 };