linux-kernel - [tip:perf/core] perf ui/hist: Add support for event group view

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Message-ID: <tip-5b9e2146ec4f8c6d436f9f7043a0409a4296a705@git.kernel.org>
Date:	Fri, 1 Feb 2013 02:47:31 -0800
From:	tip-bot for Namhyung Kim <namhyung.kim@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, eranian@...gle.com,
	paulus@...ba.org, hpa@...or.com, mingo@...nel.org,
	a.p.zijlstra@...llo.nl, namhyung.kim@....com, namhyung@...nel.org,
	jolsa@...hat.com, tglx@...utronix.de
Subject: [tip:perf/core] perf ui/hist: Add support for event group view

Commit-ID:  5b9e2146ec4f8c6d436f9f7043a0409a4296a705
Gitweb:     http://git.kernel.org/tip/5b9e2146ec4f8c6d436f9f7043a0409a4296a705
Author:     Namhyung Kim <namhyung.kim@....com>
AuthorDate: Tue, 22 Jan 2013 18:09:37 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 31 Jan 2013 13:07:46 -0300

perf ui/hist: Add support for event group view

Show group member's overhead also when showing the leader's if event
group is enabled.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/r/1358845787-1350-10-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/hist.c       | 62 +++++++++++++++++++++++++++++++++++++++++++++-
 tools/perf/ui/stdio/hist.c |  2 ++
 2 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 849c400..a47ce98 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -21,6 +21,53 @@ static int __hpp__percent_fmt(struct perf_hpp *hpp, struct hist_entry *he,
 		percent = 100.0 * get_field(he) / hists->stats.total_period;
 
 	ret = print_fn(hpp->buf, hpp->size, fmt, percent);
+
+	if (symbol_conf.event_group) {
+		int prev_idx, idx_delta;
+		struct perf_evsel *evsel = hists_to_evsel(hists);
+		struct hist_entry *pair;
+		int nr_members = evsel->nr_members;
+
+		if (nr_members <= 1)
+			return ret;
+
+		prev_idx = perf_evsel__group_idx(evsel);
+
+		list_for_each_entry(pair, &he->pairs.head, pairs.node) {
+			u64 period = get_field(pair);
+			u64 total = pair->hists->stats.total_period;
+
+			if (!total)
+				continue;
+
+			evsel = hists_to_evsel(pair->hists);
+			idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
+
+			while (idx_delta--) {
+				/*
+				 * zero-fill group members in the middle which
+				 * have no sample
+				 */
+				ret += print_fn(hpp->buf + ret, hpp->size - ret,
+						fmt, 0.0);
+			}
+
+			ret += print_fn(hpp->buf + ret, hpp->size - ret,
+					fmt, 100.0 * period / total);
+
+			prev_idx = perf_evsel__group_idx(evsel);
+		}
+
+		idx_delta = nr_members - prev_idx - 1;
+
+		while (idx_delta--) {
+			/*
+			 * zero-fill group members at last which have no sample
+			 */
+			ret += print_fn(hpp->buf + ret, hpp->size - ret,
+					fmt, 0.0);
+		}
+	}
 	return ret;
 }
 
@@ -40,6 +87,11 @@ static int hpp__header_##_type(struct perf_hpp *hpp)			\
 {									\
 	int len = _min_width;						\
 									\
+	if (symbol_conf.event_group) {					\
+		struct perf_evsel *evsel = hpp->ptr;			\
+									\
+		len = max(len, evsel->nr_members * _unit_width);	\
+	}								\
 	return scnprintf(hpp->buf, hpp->size, "%*s", len, _str);	\
 }
 
@@ -48,6 +100,11 @@ static int hpp__width_##_type(struct perf_hpp *hpp __maybe_unused)	\
 {									\
 	int len = _min_width;						\
 									\
+	if (symbol_conf.event_group) {					\
+		struct perf_evsel *evsel = hpp->ptr;			\
+									\
+		len = max(len, evsel->nr_members * _unit_width);	\
+	}								\
 	return len;							\
 }
 
@@ -438,12 +495,15 @@ unsigned int hists__sort_list_width(struct hists *hists)
 	struct perf_hpp_fmt *fmt;
 	struct sort_entry *se;
 	int i = 0, ret = 0;
+	struct perf_hpp dummy_hpp = {
+		.ptr	= hists_to_evsel(hists),
+	};
 
 	perf_hpp__for_each_format(fmt) {
 		if (i)
 			ret += 2;
 
-		ret += fmt->width(NULL);
+		ret += fmt->width(&dummy_hpp);
 	}
 
 	list_for_each_entry(se, &hist_entry__sort_list, list)
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index f979829..ff1f60c 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -3,6 +3,7 @@
 #include "../../util/util.h"
 #include "../../util/hist.h"
 #include "../../util/sort.h"
+#include "../../util/evsel.h"
 
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
@@ -347,6 +348,7 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 	struct perf_hpp dummy_hpp = {
 		.buf	= bf,
 		.size	= sizeof(bf),
+		.ptr	= hists_to_evsel(hists),
 	};
 	bool first = true;
 
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