perf tools: Move elide bool into perf_hpp_fmt struct

After output/sort fields refactoring, it's expensive
to check the elide bool in its current location inside
the 'struct sort_entry'.

The perf_hpp__should_skip function gets highly noticable in
workloads with high number of output/sort fields, like for:

  $ perf report -i perf-test.data -F overhead,sample,period,comm,pid,dso,symbol,cpu --stdio

Performance report:
   9.70%  perf  [.] perf_hpp__should_skip

Moving the elide bool into the 'struct perf_hpp_fmt', which
makes the perf_hpp__should_skip just single struct read.

Got speedup of around 22% for my test perf.data workload.
The change should not harm any other workload types.

Performance counter stats for (10 runs):
  before:
   358,319,732,626      cycles                    ( +-  0.55% )
   467,129,581,515      instructions              #    1.30  insns per cycle          ( +-  0.00% )

     150.943975206 seconds time elapsed           ( +-  0.62% )

  now:
   278,785,972,990      cycles                    ( +-  0.12% )
   370,146,797,640      instructions              #    1.33  insns per cycle          ( +-  0.00% )

     116.416670507 seconds time elapsed           ( +-  0.31% )

Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.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 <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20140601142622.GA9131@krava.brq.redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

4 files changed, 68 insertions, 40 deletions

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 5905acde5f1d..52c03fbbba17 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1706,14 +1706,14 @@ zoom_dso:
 zoom_out_dso:
                                 ui_helpline__pop();
                                 browser->hists->dso_filter = NULL;
-                                sort_dso.elide = false;
+                                perf_hpp__set_elide(HISTC_DSO, false);
                         } else {
                                 if (dso == NULL)
                                         continue;
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
                                                    dso->kernel ? "the Kernel" : dso->short_name);
                                 browser->hists->dso_filter = dso;
-                                sort_dso.elide = true;
+                                perf_hpp__set_elide(HISTC_DSO, true);
                                 pstack__push(fstack, &browser->hists->dso_filter);
                         }
                         hists__filter_by_dso(hists);
@@ -1725,13 +1725,13 @@ zoom_thread:
 zoom_out_thread:
                                 ui_helpline__pop();
                                 browser->hists->thread_filter = NULL;
-                                sort_thread.elide = false;
+                                perf_hpp__set_elide(HISTC_THREAD, false);
                         } else {
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
                                                    thread->comm_set ? thread__comm_str(thread) : "",
                                                    thread->tid);
                                 browser->hists->thread_filter = thread;
-                                sort_thread.elide = true;
+                                perf_hpp__set_elide(HISTC_THREAD, false);
                                 pstack__push(fstack, &browser->hists->thread_filter);
                         }
                         hists__filter_by_thread(hists);
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 82b28ff98062..d2bf03575d5f 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -205,6 +205,7 @@ struct perf_hpp_fmt {
 
         struct list_head list;
         struct list_head sort_list;
+        bool elide;
 };
 
 extern struct list_head perf_hpp__list;
@@ -252,7 +253,12 @@ void perf_hpp__append_sort_keys(void);
 
 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
 bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);
-bool perf_hpp__should_skip(struct perf_hpp_fmt *format);
+
+static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format)
+{
+        return format->elide;
+}
+
 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 
 typedef u64 (*hpp_field_fn)(struct hist_entry *he);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 2aba620a86f6..45512baaab67 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1157,6 +1157,7 @@ __sort_dimension__alloc_hpp(struct sort_dimension *sd)
 
         INIT_LIST_HEAD(&hse->hpp.list);
         INIT_LIST_HEAD(&hse->hpp.sort_list);
+        hse->hpp.elide = false;
 
         return hse;
 }
@@ -1364,27 +1365,64 @@ static int __setup_sorting(void)
         return ret;
 }
 
-bool perf_hpp__should_skip(struct perf_hpp_fmt *format)
+void perf_hpp__set_elide(int idx, bool elide)
 {
-        if (perf_hpp__is_sort_entry(format)) {
-                struct hpp_sort_entry *hse;
+        struct perf_hpp_fmt *fmt;
+        struct hpp_sort_entry *hse;
 
-                hse = container_of(format, struct hpp_sort_entry, hpp);
-                return hse->se->elide;
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                hse = container_of(fmt, struct hpp_sort_entry, hpp);
+                if (hse->se->se_width_idx == idx) {
+                        fmt->elide = elide;
+                        break;
+                }
         }
-        return false;
 }
 
-static void sort_entry__setup_elide(struct sort_entry *se,
-                                    struct strlist *list,
-                                    const char *list_name, FILE *fp)
+static bool __get_elide(struct strlist *list, const char *list_name, FILE *fp)
 {
         if (list && strlist__nr_entries(list) == 1) {
                 if (fp != NULL)
                         fprintf(fp, "# %s: %s\n", list_name,
                                 strlist__entry(list, 0)->s);
-                se->elide = true;
+                return true;
+        }
+        return false;
+}
+
+static bool get_elide(int idx, FILE *output)
+{
+        switch (idx) {
+        case HISTC_SYMBOL:
+                return __get_elide(symbol_conf.sym_list, "symbol", output);
+        case HISTC_DSO:
+                return __get_elide(symbol_conf.dso_list, "dso", output);
+        case HISTC_COMM:
+                return __get_elide(symbol_conf.comm_list, "comm", output);
+        default:
+                break;
         }
+
+        if (sort__mode != SORT_MODE__BRANCH)
+                return false;
+
+        switch (idx) {
+        case HISTC_SYMBOL_FROM:
+                return __get_elide(symbol_conf.sym_from_list, "sym_from", output);
+        case HISTC_SYMBOL_TO:
+                return __get_elide(symbol_conf.sym_to_list, "sym_to", output);
+        case HISTC_DSO_FROM:
+                return __get_elide(symbol_conf.dso_from_list, "dso_from", output);
+        case HISTC_DSO_TO:
+                return __get_elide(symbol_conf.dso_to_list, "dso_to", output);
+        default:
+                break;
+        }
+
+        return false;
 }
 
 void sort__setup_elide(FILE *output)
@@ -1392,26 +1430,12 @@ void sort__setup_elide(FILE *output)
         struct perf_hpp_fmt *fmt;
         struct hpp_sort_entry *hse;
 
-        sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                "dso", output);
-        sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list,
-                                "comm", output);
-        sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list,
-                                "symbol", output);
-
-        if (sort__mode == SORT_MODE__BRANCH) {
-                sort_entry__setup_elide(&sort_dso_from,
-                                        symbol_conf.dso_from_list,
-                                        "dso_from", output);
-                sort_entry__setup_elide(&sort_dso_to,
-                                        symbol_conf.dso_to_list,
-                                        "dso_to", output);
-                sort_entry__setup_elide(&sort_sym_from,
-                                        symbol_conf.sym_from_list,
-                                        "sym_from", output);
-                sort_entry__setup_elide(&sort_sym_to,
-                                        symbol_conf.sym_to_list,
-                                        "sym_to", output);
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                hse = container_of(fmt, struct hpp_sort_entry, hpp);
+                fmt->elide = get_elide(hse->se->se_width_idx, output);
         }
 
         /*
@@ -1422,8 +1446,7 @@ void sort__setup_elide(FILE *output)
                 if (!perf_hpp__is_sort_entry(fmt))
                         continue;
 
-                hse = container_of(fmt, struct hpp_sort_entry, hpp);
-                if (!hse->se->elide)
+                if (!fmt->elide)
                         return;
         }
 
@@ -1431,8 +1454,7 @@ void sort__setup_elide(FILE *output)
                 if (!perf_hpp__is_sort_entry(fmt))
                         continue;
 
-                hse = container_of(fmt, struct hpp_sort_entry, hpp);
-                hse->se->elide = false;
+                fmt->elide = false;
         }
 }
 
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 426b873e16ff..5bf0098d6b06 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -202,7 +202,6 @@ struct sort_entry {
         int     (*se_snprintf)(struct hist_entry *he, char *bf, size_t size,
                                unsigned int width);
         u8      se_width_idx;
-        bool    elide;
 };
 
 extern struct sort_entry sort_thread;
@@ -213,6 +212,7 @@ int setup_output_field(void);
 void reset_output_field(void);
 extern int sort_dimension__add(const char *);
 void sort__setup_elide(FILE *fp);
+void perf_hpp__set_elide(int idx, bool elide);
 
 int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset);