[PATCH 1/5] perf report: Fix comparing of dynamic entries

[Namhyung Kim]

When hist_entry__cmp() and hist_entry__collapse() are called, it should
check the dynamic entry is comparing matching hists only.  Otherwise it
might access different hists resulting in incorrect output.

Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
 tools/perf/util/hist.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 75dc41d2dca9..cc849d326211 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1002,6 +1002,10 @@ hist_entry__cmp(struct hist_entry *left, struct 
hist_entry *right)
        int64_t cmp = 0;
 
        hists__for_each_sort_list(hists, fmt) {
+               if (perf_hpp__is_dynamic_entry(fmt) &&
+                   !perf_hpp__defined_dynamic_entry(fmt, hists))
+                       continue;
+
                cmp = fmt->cmp(fmt, left, right);
                if (cmp)
                        break;
@@ -1018,6 +1022,10 @@ hist_entry__collapse(struct hist_entry *left, struct 
hist_entry *right)
        int64_t cmp = 0;
 
        hists__for_each_sort_list(hists, fmt) {
+               if (perf_hpp__is_dynamic_entry(fmt) &&
+                   !perf_hpp__defined_dynamic_entry(fmt, hists))
+                       continue;
+
                cmp = fmt->collapse(fmt, left, right);
                if (cmp)
                        break;
-- 
2.7.1