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From: "Martin Liška" <mliska@suse.cz>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Mackerras <paulus@samba.org>,
	Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH] perf annotate: With --show-total-period, display total # of samples.
Date: Thu, 18 Jun 2015 20:06:25 +0200	[thread overview]
Message-ID: <558308A1.6060408@suse.cz> (raw)
In-Reply-To: <20150618162627.GB6989@gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1449 bytes --]

On 06/18/2015 06:26 PM, Ingo Molnar wrote:
> 
> * Martin Liška <mliska@suse.cz> wrote:
> 
>> To compare two records on an instruction base, with --show-total-period
>> option provided, display total number of samples that belong to a line
>> in assembly language.
>>
>> Signed-off-by: Martin Liska <mliska@suse.cz>
>> ---
>>  tools/perf/builtin-annotate.c     |  2 ++
>>  tools/perf/ui/browsers/annotate.c | 44 +++++++++++++++++++++++++--------------
>>  tools/perf/util/annotate.c        | 28 +++++++++++++++++++------
>>  tools/perf/util/annotate.h        |  3 ++-
>>  4 files changed, 54 insertions(+), 23 deletions(-)
>>
>> diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
>> index 4e08c2d..2c1bec3 100644
>> --- a/tools/perf/builtin-annotate.c
>> +++ b/tools/perf/builtin-annotate.c
>> @@ -329,6 +329,8 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
>>  		   "objdump binary to use for disassembly and annotations"),
>>  	OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
>>  		    "Show event group information together"),
>> +	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
>> +		    "Show a column with the sum of periods"),
>>  	OPT_END()
> 
> What is the toggle for this in the 'perf report' TUI? (which displays annotated 
> output too)
> 
> Thanks,
> 
> 	Ingo
> 

Hello.

Thanks for note, I fixed that by introducing a new 't' hot key.

Thanks,
Martin

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>From 98e1998fcd7481c7e1756e643d66eb85559849ac Mon Sep 17 00:00:00 2001
From: mliska <mliska@suse.cz>
Date: Wed, 27 May 2015 10:54:42 +0200
Subject: [PATCH] perf annotate: With --show-total-period, display total # of
 samples.

To compare two records on an instruction base, with --show-total-period
option provided, display total number of samples that belong to a line
in assembly language.

New hot key 't' is introduced for 'perf annotate' TUI.

Signed-off-by: Martin Liska <mliska@suse.cz>
---
 tools/perf/builtin-annotate.c     |  5 +++-
 tools/perf/ui/browsers/annotate.c | 60 +++++++++++++++++++++++++++------------
 tools/perf/util/annotate.c        | 28 ++++++++++++++----
 tools/perf/util/annotate.h        |  3 +-
 tools/perf/util/hist.h            |  3 +-
 5 files changed, 72 insertions(+), 27 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 4e08c2d..b0c442e 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -161,7 +161,8 @@ find_next:
 			/* skip missing symbols */
 			nd = rb_next(nd);
 		} else if (use_browser == 1) {
-			key = hist_entry__tui_annotate(he, evsel, NULL);
+			key = hist_entry__tui_annotate(he, evsel, NULL,
+				symbol_conf.show_total_period);
 			switch (key) {
 			case -1:
 				if (!ann->skip_missing)
@@ -329,6 +330,8 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
 		   "objdump binary to use for disassembly and annotations"),
 	OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
 		    "Show event group information together"),
+	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
+		    "Show a column with the sum of periods"),
 	OPT_END()
 	};
 	int ret = hists__init();
diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index acb0e23..e7cd596 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -11,16 +11,21 @@
 #include "../../util/evsel.h"
 #include <pthread.h>
 
+struct disasm_tuple {
+	double		percent;
+	double		samples;
+};
+
 struct browser_disasm_line {
-	struct rb_node	rb_node;
-	u32		idx;
-	int		idx_asm;
-	int		jump_sources;
+	struct rb_node		rb_node;
+	u32			idx;
+	int			idx_asm;
+	int			jump_sources;
 	/*
 	 * actual length of this array is saved on the nr_events field
 	 * of the struct annotate_browser
 	 */
-	double		percent[1];
+	struct disasm_tuple    tuples[1];
 };
 
 static struct annotate_browser_opt {
@@ -28,7 +33,8 @@ static struct annotate_browser_opt {
 	     use_offset,
 	     jump_arrows,
 	     show_linenr,
-	     show_nr_jumps;
+	     show_nr_jumps,
+	     show_total_period;
 } annotate_browser__opts = {
 	.use_offset	= true,
 	.jump_arrows	= true,
@@ -105,15 +111,19 @@ static void annotate_browser__write(struct ui_browser *browser, void *entry, int
 	char bf[256];
 
 	for (i = 0; i < ab->nr_events; i++) {
-		if (bdl->percent[i] > percent_max)
-			percent_max = bdl->percent[i];
+		if (bdl->tuples[i].percent > percent_max)
+			percent_max = bdl->tuples[i].percent;
 	}
 
 	if (dl->offset != -1 && percent_max != 0.0) {
 		for (i = 0; i < ab->nr_events; i++) {
-			ui_browser__set_percent_color(browser, bdl->percent[i],
+			ui_browser__set_percent_color(browser,
+						      bdl->tuples[i].percent,
 						      current_entry);
-			slsmg_printf("%6.2f ", bdl->percent[i]);
+			if (annotate_browser__opts.show_total_period)
+				slsmg_printf("%6.0f ", bdl->tuples[i].samples);
+			else
+				slsmg_printf("%6.2f ", bdl->tuples[i].percent);
 		}
 	} else {
 		ui_browser__set_percent_color(browser, 0, current_entry);
@@ -273,9 +283,9 @@ static int disasm__cmp(struct browser_disasm_line *a,
 	int i;
 
 	for (i = 0; i < nr_pcnt; i++) {
-		if (a->percent[i] == b->percent[i])
+		if (a->tuples[i].percent == b->tuples[i].percent)
 			continue;
-		return a->percent[i] < b->percent[i];
+		return a->tuples[i].percent < b->tuples[i].percent;
 	}
 	return 0;
 }
@@ -366,14 +376,17 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser,
 		next = disasm__get_next_ip_line(&notes->src->source, pos);
 
 		for (i = 0; i < browser->nr_events; i++) {
-			bpos->percent[i] = disasm__calc_percent(notes,
+			double samples;
+
+			bpos->tuples[i].percent = disasm__calc_percent(notes,
 						evsel->idx + i,
 						pos->offset,
 						next ? next->offset : len,
-					        &path);
+						&path, &samples);
+			bpos->tuples[i].samples = samples;
 
-			if (max_percent < bpos->percent[i])
-				max_percent = bpos->percent[i];
+			if (max_percent < bpos->tuples[i].percent)
+				max_percent = bpos->tuples[i].percent;
 		}
 
 		if (max_percent < 0.01) {
@@ -737,6 +750,7 @@ static int annotate_browser__run(struct annotate_browser *browser,
 		"n             Search next string\n"
 		"o             Toggle disassembler output/simplified view\n"
 		"s             Toggle source code view\n"
+		"t             Toggle total period view\n"
 		"/             Search string\n"
 		"k             Toggle line numbers\n"
 		"r             Run available scripts\n"
@@ -812,6 +826,11 @@ show_sup_ins:
 				ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
 			}
 			continue;
+		case 't':
+			annotate_browser__opts.show_total_period =
+			  !annotate_browser__opts.show_total_period;
+			annotate_browser__update_addr_width(browser);
+			continue;
 		case K_LEFT:
 		case K_ESC:
 		case 'q':
@@ -836,12 +855,16 @@ int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
 }
 
 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
-			     struct hist_browser_timer *hbt)
+			     struct hist_browser_timer *hbt,
+			     bool show_total_period)
 {
 	/* reset abort key so that it can get Ctrl-C as a key */
 	SLang_reset_tty();
 	SLang_init_tty(0, 0, 0);
 
+	/* Set default value for show_total_period.  */
+	annotate_browser__opts.show_total_period = show_total_period;
+
 	return map_symbol__tui_annotate(&he->ms, evsel, hbt);
 }
 
@@ -929,7 +952,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
 
 	if (perf_evsel__is_group_event(evsel)) {
 		nr_pcnt = evsel->nr_members;
-		sizeof_bdl += sizeof(double) * (nr_pcnt - 1);
+		sizeof_bdl += sizeof(struct disasm_tuple) * (nr_pcnt - 1);
 	}
 
 	if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
@@ -1006,6 +1029,7 @@ static struct annotate_config {
 	ANNOTATE_CFG(show_linenr),
 	ANNOTATE_CFG(show_nr_jumps),
 	ANNOTATE_CFG(use_offset),
+	ANNOTATE_CFG(show_total_period),
 };
 
 #undef ANNOTATE_CFG
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index bf80430..8b94603 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -654,10 +654,11 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
 }
 
 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
-			    s64 end, const char **path)
+			    s64 end, const char **path, double *samples)
 {
 	struct source_line *src_line = notes->src->lines;
 	double percent = 0.0;
+	*samples = 0.0;
 
 	if (src_line) {
 		size_t sizeof_src_line = sizeof(*src_line) +
@@ -671,6 +672,7 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 				*path = src_line->path;
 
 			percent += src_line->p[evidx].percent;
+			*samples += src_line->p[evidx].samples;
 			offset++;
 		}
 	} else {
@@ -680,8 +682,10 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 		while (offset < end)
 			hits += h->addr[offset++];
 
-		if (h->sum)
+		if (h->sum) {
+			*samples = hits;
 			percent = 100.0 * hits / h->sum;
+		}
 	}
 
 	return percent;
@@ -696,8 +700,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
 
 	if (dl->offset != -1) {
 		const char *path = NULL;
-		double percent, max_percent = 0.0;
+		double percent, samples, max_percent = 0.0;
 		double *ppercents = &percent;
+		double *psamples = &samples;
 		int i, nr_percent = 1;
 		const char *color;
 		struct annotation *notes = symbol__annotation(sym);
@@ -710,8 +715,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
 		if (perf_evsel__is_group_event(evsel)) {
 			nr_percent = evsel->nr_members;
 			ppercents = calloc(nr_percent, sizeof(double));
-			if (ppercents == NULL)
+			psamples = calloc(nr_percent, sizeof(double));
+			if (ppercents == NULL || psamples == NULL) {
 				return -1;
+			}
 		}
 
 		for (i = 0; i < nr_percent; i++) {
@@ -719,9 +726,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
 					notes->src->lines ? i : evsel->idx + i,
 					offset,
 					next ? next->offset : (s64) len,
-					&path);
+					&path, &samples);
 
 			ppercents[i] = percent;
+			psamples[i] = samples;
 			if (percent > max_percent)
 				max_percent = percent;
 		}
@@ -759,8 +767,13 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
 
 		for (i = 0; i < nr_percent; i++) {
 			percent = ppercents[i];
+			samples = psamples[i];
 			color = get_percent_color(percent);
-			color_fprintf(stdout, color, " %7.2f", percent);
+
+			if (symbol_conf.show_total_period)
+				color_fprintf(stdout, color, " %7.0f", samples);
+			else
+				color_fprintf(stdout, color, " %7.2f", percent);
 		}
 
 		printf(" :	");
@@ -770,6 +783,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
 		if (ppercents != &percent)
 			free(ppercents);
 
+		if (psamples != &samples)
+			free(psamples);
+
 	} else if (max_lines && printed >= max_lines)
 		return 1;
 	else {
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index cadbdc9..752d1bd 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -72,7 +72,7 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa
 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
 size_t disasm__fprintf(struct list_head *head, FILE *fp);
 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
-			    s64 end, const char **path);
+			    s64 end, const char **path, double *samples);
 
 struct sym_hist {
 	u64		sum;
@@ -82,6 +82,7 @@ struct sym_hist {
 struct source_line_percent {
 	double		percent;
 	double		percent_sum;
+	double          samples;
 };
 
 struct source_line {
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 5ed8d9c..65f953f 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -306,7 +306,8 @@ int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
 			     struct hist_browser_timer *hbt);
 
 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
-			     struct hist_browser_timer *hbt);
+			     struct hist_browser_timer *hbt,
+			     bool show_total_period);
 
 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
 				  struct hist_browser_timer *hbt,
-- 
2.1.4


  reply	other threads:[~2015-06-18 18:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-18 16:10 Martin Liška
2015-06-18 16:26 ` Ingo Molnar
2015-06-18 18:06   ` Martin Liška [this message]
2015-06-18 19:15     ` Arnaldo Carvalho de Melo
2015-06-19  9:35       ` Martin Liška
2015-06-19 19:10         ` Arnaldo Carvalho de Melo
2015-06-20 11:53           ` Martin Liška
2015-06-22 14:38             ` Arnaldo Carvalho de Melo
2015-06-19 23:15         ` [tip:perf/core] perf annotate: Display total number of samples with --show-total-period tip-bot for Martin Liška

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