perf hists: Cleanup filtering functions

The hists__filter_by_xxx functions share same logic with different
filters.  Factor out the common code into the hists__filter_by_type.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1453252521-24398-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 1d8c8ea..81ce0af 100644 (file)
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1254,25 +1254,6 @@ static bool hists__filter_entry_by_dso(struct hists *hists,
        return false;
 }
 
-void hists__filter_by_dso(struct hists *hists)
-{
-       struct rb_node *nd;
-
-       hists->stats.nr_non_filtered_samples = 0;
-
-       hists__reset_filter_stats(hists);
-       hists__reset_col_len(hists);
-
-       for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
-               struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-
-               if (hists__filter_entry_by_dso(hists, h))
-                       continue;
-
-               hists__remove_entry_filter(hists, h, HIST_FILTER__DSO);
-       }
-}
-
 static bool hists__filter_entry_by_thread(struct hists *hists,
                                          struct hist_entry *he)
 {
@@ -1285,25 +1266,6 @@ static bool hists__filter_entry_by_thread(struct hists *hists,
        return false;
 }
 
-void hists__filter_by_thread(struct hists *hists)
-{
-       struct rb_node *nd;
-
-       hists->stats.nr_non_filtered_samples = 0;
-
-       hists__reset_filter_stats(hists);
-       hists__reset_col_len(hists);
-
-       for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
-               struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-
-               if (hists__filter_entry_by_thread(hists, h))
-                       continue;
-
-               hists__remove_entry_filter(hists, h, HIST_FILTER__THREAD);
-       }
-}
-
 static bool hists__filter_entry_by_symbol(struct hists *hists,
                                          struct hist_entry *he)
 {
@@ -1317,25 +1279,6 @@ static bool hists__filter_entry_by_symbol(struct hists *hists,
        return false;
 }
 
-void hists__filter_by_symbol(struct hists *hists)
-{
-       struct rb_node *nd;
-
-       hists->stats.nr_non_filtered_samples = 0;
-
-       hists__reset_filter_stats(hists);
-       hists__reset_col_len(hists);
-
-       for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
-               struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-
-               if (hists__filter_entry_by_symbol(hists, h))
-                       continue;
-
-               hists__remove_entry_filter(hists, h, HIST_FILTER__SYMBOL);
-       }
-}
-
 static bool hists__filter_entry_by_socket(struct hists *hists,
                                          struct hist_entry *he)
 {
@@ -1348,7 +1291,9 @@ static bool hists__filter_entry_by_socket(struct hists *hists,
        return false;
 }
 
-void hists__filter_by_socket(struct hists *hists)
+typedef bool (*filter_fn_t)(struct hists *hists, struct hist_entry *he);
+
+static void hists__filter_by_type(struct hists *hists, int type, filter_fn_t filter)
 {
        struct rb_node *nd;
 
@@ -1360,13 +1305,37 @@ void hists__filter_by_socket(struct hists *hists)
        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
-               if (hists__filter_entry_by_socket(hists, h))
+               if (filter(hists, h))
                        continue;
 
-               hists__remove_entry_filter(hists, h, HIST_FILTER__SOCKET);
+               hists__remove_entry_filter(hists, h, type);
        }
 }
 
+void hists__filter_by_thread(struct hists *hists)
+{
+       hists__filter_by_type(hists, HIST_FILTER__THREAD,
+                             hists__filter_entry_by_thread);
+}
+
+void hists__filter_by_dso(struct hists *hists)
+{
+       hists__filter_by_type(hists, HIST_FILTER__DSO,
+                             hists__filter_entry_by_dso);
+}
+
+void hists__filter_by_symbol(struct hists *hists)
+{
+       hists__filter_by_type(hists, HIST_FILTER__SYMBOL,
+                             hists__filter_entry_by_symbol);
+}
+
+void hists__filter_by_socket(struct hists *hists)
+{
+       hists__filter_by_type(hists, HIST_FILTER__SOCKET,
+                             hists__filter_entry_by_socket);
+}
+
 void events_stats__inc(struct events_stats *stats, u32 type)
 {
        ++stats->nr_events[0];