perf tools: Support event grouping in hpp ->sort()

Move logic of hist_entry__sort_on_period to __hpp__sort() in order to
support event group report.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1400480762-22852-5-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

1 files changed, 58 insertions, 6 deletions

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index a6eea666b443..0299385284fd 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -116,6 +116,62 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
         return ret;
 }
 
+static int field_cmp(u64 field_a, u64 field_b)
+{
+        if (field_a > field_b)
+                return 1;
+        if (field_a < field_b)
+                return -1;
+        return 0;
+}
+
+static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
+                       hpp_field_fn get_field)
+{
+        s64 ret;
+        int i, nr_members;
+        struct perf_evsel *evsel;
+        struct hist_entry *pair;
+        u64 *fields_a, *fields_b;
+
+        ret = field_cmp(get_field(a), get_field(b));
+        if (ret || !symbol_conf.event_group)
+                return ret;
+
+        evsel = hists_to_evsel(a->hists);
+        if (!perf_evsel__is_group_event(evsel))
+                return ret;
+
+        nr_members = evsel->nr_members;
+        fields_a = calloc(sizeof(*fields_a), nr_members);
+        fields_b = calloc(sizeof(*fields_b), nr_members);
+
+        if (!fields_a || !fields_b)
+                goto out;
+
+        list_for_each_entry(pair, &a->pairs.head, pairs.node) {
+                evsel = hists_to_evsel(pair->hists);
+                fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
+        }
+
+        list_for_each_entry(pair, &b->pairs.head, pairs.node) {
+                evsel = hists_to_evsel(pair->hists);
+                fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
+        }
+
+        for (i = 1; i < nr_members; i++) {
+                ret = field_cmp(fields_a[i], fields_b[i]);
+                if (ret)
+                        break;
+        }
+
+out:
+        free(fields_a);
+        free(fields_b);
+
+        return ret;
+}
+
 #define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)           \
 static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
                                struct perf_hpp *hpp,                    \
@@ -195,9 +251,7 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,		\
 #define __HPP_SORT_FN(_type, _field)                                            \
 static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)    \
 {                                                                               \
-        s64 __a = he_get_##_field(a);                                           \
-        s64 __b = he_get_##_field(b);                                           \
-        return __a - __b;                                                       \
+        return __hpp__sort(a, b, he_get_##_field);                              \
 }
 
 #define __HPP_ENTRY_RAW_FN(_type, _field)                                       \
@@ -217,9 +271,7 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,		\
 #define __HPP_SORT_RAW_FN(_type, _field)                                        \
 static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)    \
 {                                                                               \
-        s64 __a = he_get_raw_##_field(a);                                       \
-        s64 __b = he_get_raw_##_field(b);                                       \
-        return __a - __b;                                                       \
+        return __hpp__sort(a, b, he_get_raw_##_field);                          \
 }