[PATCHv2] perf tools: Move elide bool into perf_hpp_fmt struct

From: Jiri Olsa
Date: Sun Jun 01 2014 - 10:26:43 EST

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On Fri, May 30, 2014 at 02:47:54PM +0900, Namhyung Kim wrote:
> On Fri, 23 May 2014 17:15:45 +0200, Jiri Olsa wrote:
> > hi,
> > factoring the elide code to make perf_hpp__should_skip
> > function cheap call/check again.
>
> Both look good to me!
>
> Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
>
>
> >
> > Also I was wondering.. do we want to get rid of sort_entry
> > structs in favor of perf_hpp__* stuff? Any plans?
>
> Probably.. but there's no plan for me currently. :)
>
> Thanks,
> Namhyung

while hunting another bug I noticed I did not initialized properly the
elide bool in __sort_dimension__alloc_hpp.. attached v2 of patch 2/2

thanks,
jirka

---
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@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1400858147-7155-3-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/ui/browsers/hists.c | 8 ++--
tools/perf/util/hist.h | 8 +++-
tools/perf/util/sort.c | 90 ++++++++++++++++++++++++++----------------
tools/perf/util/sort.h | 2 +-
4 files changed, 68 insertions(+), 40 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 5905acd..52c03fb 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 82b28ff..d2bf035 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 2aba620..45512ba 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 426b873..5bf0098 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);

--
1.8.1.4

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Next message: Maxime Ripard: "Re: [PATCH v8 2/3] [media] rc: add sunxi-ir driver"
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Next in thread: Jiri Olsa: "[RFC/BUG] not working LLC-load-misses on SandyBridge (42) and Haswell"
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