[PATCHSET 0/5] perf hists browser: Cleanup callchain routines

[PATCHSET 0/5] perf hists browser: Cleanup callchain routines

[Namhyung Kim]

Hello,

This patch fixes and cleans up TUI callchain routines.  I tried to
consolidate similar functions but not to break the current output with
this change.  Hope that it makes code more readable and maintainable.

It should not change any behavior and outputs.  I verified it with
expanding by 'E' key + dumping by 'P' key on TUI and then running
"diff -u" results before and after the patchset.

Actually I have more changes that would change (or improve) some
behavior and output.  I'll post them after this patchset is merged.

You can get this from 'perf/callchain-fix-v1' branch on my tree:

  git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git

Any comments are welcome, thanks
Namhyung


Namhyung Kim (5):
  perf hists browser: Fix children overhead dump
  perf hists browser: Factor out hist_browser__show_callchain_entry()
  perf hists browser: Get rid of unused 'remaining' variable
  perf hists browser: Cleanup callchain print functions
  perf hists browser: Consolidate callchain print functions in TUI

 tools/perf/ui/browsers/hists.c | 349 ++++++++++++++---------------------------
 tools/perf/ui/hist.c           |   2 +-
 2 files changed, 117 insertions(+), 234 deletions(-)

-- 
2.0.0

[PATCH 1/5] perf hists browser: Fix children overhead dump

[Namhyung Kim]

When perf report runs on TUI, 'P' key dumps current screen to a file
but it incorrectly displayed children overhead (as same of self
overhead).  This was because it fetched the value from self stats.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/hist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index b5fa7019d2e2..75eb6ac821f8 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -304,7 +304,7 @@ static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
 {										\
-	return hpp__fmt_acc(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
+	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",	\
 			    hpp_entry_scnprintf, true);				\
 }
 
-- 
2.0.0

[PATCH 2/5] perf hists browser: Factor out hist_browser__show_callchain_entry()

[Namhyung Kim]

Factor out duplicate callchain printing code into the hist_browser__
show_callchain_entry().

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/browsers/hists.c | 64 ++++++++++++++++++++++--------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 4892480e8298..2abb0c5cbbaa 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -477,6 +477,29 @@ static char *callchain_list__sym_name(struct callchain_list *cl,
 	return bf;
 }
 
+static void hist_browser__show_callchain_entry(struct hist_browser *browser,
+					       struct callchain_list *chain,
+					       unsigned short row, int offset,
+					       char folded_sign, const char *str,
+					       bool *is_current_entry)
+{
+	int color, width;
+
+	color = HE_COLORSET_NORMAL;
+	width = browser->b.width - (offset + 2);
+	if (ui_browser__is_current_entry(&browser->b, row)) {
+		browser->selection = &chain->ms;
+		color = HE_COLORSET_SELECTED;
+		*is_current_entry = true;
+	}
+
+	ui_browser__set_color(&browser->b, color);
+	hist_browser__gotorc(browser, row, 0);
+	slsmg_write_nstring(" ", offset);
+	slsmg_printf("%c ", folded_sign);
+	slsmg_write_nstring(str, width);
+}
+
 #define LEVEL_OFFSET_STEP 3
 
 static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browser,
@@ -487,7 +510,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 						     bool *is_current_entry)
 {
 	struct rb_node *node;
-	int first_row = row, width, offset = level * LEVEL_OFFSET_STEP;
+	int first_row = row, offset = level * LEVEL_OFFSET_STEP;
 	u64 new_total, remaining;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
@@ -511,7 +534,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;
-			int color;
 			bool was_first = first;
 
 			if (first)
@@ -537,19 +559,10 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 					str = alloc_str;
 			}
 
-			color = HE_COLORSET_NORMAL;
-			width = browser->b.width - (offset + extra_offset + 2);
-			if (ui_browser__is_current_entry(&browser->b, row)) {
-				browser->selection = &chain->ms;
-				color = HE_COLORSET_SELECTED;
-				*is_current_entry = true;
-			}
-
-			ui_browser__set_color(&browser->b, color);
-			hist_browser__gotorc(browser, row, 0);
-			slsmg_write_nstring(" ", offset + extra_offset);
-			slsmg_printf("%c ", folded_sign);
-			slsmg_write_nstring(str, width);
+			hist_browser__show_callchain_entry(browser, chain, row,
+							   offset + extra_offset,
+							   folded_sign, str,
+							   is_current_entry);
 			free(alloc_str);
 
 			if (++row == browser->b.rows)
@@ -580,14 +593,12 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser,
 					     bool *is_current_entry)
 {
 	struct callchain_list *chain;
-	int first_row = row,
-	     offset = level * LEVEL_OFFSET_STEP,
-	     width = browser->b.width - offset;
+	int first_row = row;
+	int offset = level * LEVEL_OFFSET_STEP;
 	char folded_sign = ' ';
 
 	list_for_each_entry(chain, &node->val, list) {
 		char bf[1024], *s;
-		int color;
 
 		folded_sign = callchain_list__folded(chain);
 
@@ -596,20 +607,11 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser,
 			continue;
 		}
 
-		color = HE_COLORSET_NORMAL;
-		if (ui_browser__is_current_entry(&browser->b, row)) {
-			browser->selection = &chain->ms;
-			color = HE_COLORSET_SELECTED;
-			*is_current_entry = true;
-		}
-
 		s = callchain_list__sym_name(chain, bf, sizeof(bf),
 					     browser->show_dso);
-		hist_browser__gotorc(browser, row, 0);
-		ui_browser__set_color(&browser->b, color);
-		slsmg_write_nstring(" ", offset);
-		slsmg_printf("%c ", folded_sign);
-		slsmg_write_nstring(s, width - 2);
+		hist_browser__show_callchain_entry(browser, chain, row,
+						   offset, folded_sign, s,
+						   is_current_entry);
 
 		if (++row == browser->b.rows)
 			goto out;
-- 
2.0.0

[PATCH 3/5] perf hists browser: Get rid of unused 'remaining' variable

[Namhyung Kim]

It seems that the 'remaining' variable is not used by any real code.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/browsers/hists.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 2abb0c5cbbaa..d42d8a8f3810 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -511,14 +511,13 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 {
 	struct rb_node *node;
 	int first_row = row, offset = level * LEVEL_OFFSET_STEP;
-	u64 new_total, remaining;
+	u64 new_total;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
 		new_total = chain_node->children_hit;
 	else
 		new_total = total;
 
-	remaining = new_total;
 	node = rb_first(&chain_node->rb_root);
 	while (node) {
 		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
@@ -529,8 +528,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 		int first = true;
 		int extra_offset = 0;
 
-		remaining -= cumul;
-
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;
@@ -1086,7 +1083,7 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 {
 	struct rb_node *node;
 	int offset = level * LEVEL_OFFSET_STEP;
-	u64 new_total, remaining;
+	u64 new_total;
 	int printed = 0;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
@@ -1094,7 +1091,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 	else
 		new_total = total;
 
-	remaining = new_total;
 	node = rb_first(&chain_node->rb_root);
 	while (node) {
 		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
@@ -1105,8 +1101,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 		int first = true;
 		int extra_offset = 0;
 
-		remaining -= cumul;
-
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;
-- 
2.0.0

[PATCH 4/5] perf hists browser: Cleanup callchain print functions

[Namhyung Kim]

The hist_browser__show_callchain() and friends don't need to be that
complex.  Simplify the function and consolidate the logic into a
single function.  It should have no functional change.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/browsers/hists.c | 120 +++++++++++------------------------------
 1 file changed, 32 insertions(+), 88 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index d42d8a8f3810..05ff679777a1 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -502,26 +502,19 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser,
 
 #define LEVEL_OFFSET_STEP 3
 
-static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browser,
-						     struct callchain_node *chain_node,
-						     u64 total, int level,
-						     unsigned short row,
-						     off_t *row_offset,
-						     bool *is_current_entry)
+static int hist_browser__show_callchain(struct hist_browser *browser,
+					struct rb_root *root, int level,
+					unsigned short row, off_t *row_offset,
+					u64 total, bool *is_current_entry)
 {
 	struct rb_node *node;
-	int first_row = row, offset = level * LEVEL_OFFSET_STEP;
+	int first_row = row;
+	int offset = level * LEVEL_OFFSET_STEP;
+	bool has_single_node = (rb_first(root) == rb_last(root));
 	u64 new_total;
 
-	if (callchain_param.mode == CHAIN_GRAPH_REL)
-		new_total = chain_node->children_hit;
-	else
-		new_total = total;
-
-	node = rb_first(&chain_node->rb_root);
-	while (node) {
+	for (node = rb_first(root); node; node = rb_next(node)) {
 		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
-		struct rb_node *next = rb_next(node);
 		u64 cumul = callchain_cumul_hits(child);
 		struct callchain_list *chain;
 		char folded_sign = ' ';
@@ -535,7 +528,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 
 			if (first)
 				first = false;
-			else
+			else if (!has_single_node || level > 1)
 				extra_offset = LEVEL_OFFSET_STEP;
 
 			folded_sign = callchain_list__folded(chain);
@@ -547,8 +540,9 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 			alloc_str = NULL;
 			str = callchain_list__sym_name(chain, bf, sizeof(bf),
 						       browser->show_dso);
-			if (was_first) {
-				double percent = cumul * 100.0 / new_total;
+
+			if (was_first && (!has_single_node || level > 1)) {
+				double percent = cumul * 100.0 / total;
 
 				if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0)
 					str = "Not enough memory!";
@@ -569,80 +563,23 @@ do_next:
 				break;
 		}
 
-		if (folded_sign == '-') {
-			const int new_level = level + (extra_offset ? 2 : 1);
-			row += hist_browser__show_callchain_node_rb_tree(browser, child, new_total,
-									 new_level, row, row_offset,
-									 is_current_entry);
-		}
-		if (row == browser->b.rows)
-			goto out;
-		node = next;
-	}
-out:
-	return row - first_row;
-}
-
-static int hist_browser__show_callchain_node(struct hist_browser *browser,
-					     struct callchain_node *node,
-					     int level, unsigned short row,
-					     off_t *row_offset,
-					     bool *is_current_entry)
-{
-	struct callchain_list *chain;
-	int first_row = row;
-	int offset = level * LEVEL_OFFSET_STEP;
-	char folded_sign = ' ';
-
-	list_for_each_entry(chain, &node->val, list) {
-		char bf[1024], *s;
-
-		folded_sign = callchain_list__folded(chain);
-
-		if (*row_offset != 0) {
-			--*row_offset;
+		if (folded_sign != '-')
 			continue;
-		}
-
-		s = callchain_list__sym_name(chain, bf, sizeof(bf),
-					     browser->show_dso);
-		hist_browser__show_callchain_entry(browser, chain, row,
-						   offset, folded_sign, s,
-						   is_current_entry);
-
-		if (++row == browser->b.rows)
-			goto out;
-	}
-
-	if (folded_sign == '-')
-		row += hist_browser__show_callchain_node_rb_tree(browser, node,
-								 browser->hists->stats.total_period,
-								 level + 1, row,
-								 row_offset,
-								 is_current_entry);
-out:
-	return row - first_row;
-}
-
-static int hist_browser__show_callchain(struct hist_browser *browser,
-					struct rb_root *chain,
-					int level, unsigned short row,
-					off_t *row_offset,
-					bool *is_current_entry)
-{
-	struct rb_node *nd;
-	int first_row = row;
 
-	for (nd = rb_first(chain); nd; nd = rb_next(nd)) {
-		struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
+		if (callchain_param.mode == CHAIN_GRAPH_REL)
+			new_total = child->children_hit;
+		else
+			new_total = total;
 
-		row += hist_browser__show_callchain_node(browser, node, level,
-							 row, row_offset,
-							 is_current_entry);
+		row += hist_browser__show_callchain(browser, &child->rb_root,
+						    level + 1 + !!extra_offset,
+						    row, row_offset,
+						    new_total,
+						    is_current_entry);
 		if (row == browser->b.rows)
 			break;
 	}
-
+out:
 	return row - first_row;
 }
 
@@ -817,9 +754,16 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 		--row_offset;
 
 	if (folded_sign == '-' && row != browser->b.rows) {
-		printed += hist_browser__show_callchain(browser, &entry->sorted_chain,
+		u64 total = hists__total_period(entry->hists);
+
+		if (symbol_conf.cumulate_callchain)
+			total = entry->stat_acc->period;
+
+		printed += hist_browser__show_callchain(browser,
+							&entry->sorted_chain,
 							1, row, &row_offset,
-							&current_entry);
+							total, &current_entry);
+
 		if (current_entry)
 			browser->he_selection = entry;
 	}
-- 
2.0.0

[PATCH 5/5] perf hists browser: Consolidate callchain print functions in TUI

[Namhyung Kim]

Currently there're two callchain print functions in TUI - one for the
hists browser and another for file dump.  They do almost same job so
it'd be better consolidate the codes.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/browsers/hists.c | 211 +++++++++++++++--------------------------
 1 file changed, 77 insertions(+), 134 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 05ff679777a1..8ad20e13044f 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -477,20 +477,32 @@ static char *callchain_list__sym_name(struct callchain_list *cl,
 	return bf;
 }
 
+struct callchain_print_arg {
+	/* for hists browser */
+	unsigned short row;
+	off_t row_offset;
+	bool is_current_entry;
+
+	/* for file dump */
+	FILE *fp;
+	int printed;
+};
+
 static void hist_browser__show_callchain_entry(struct hist_browser *browser,
 					       struct callchain_list *chain,
-					       unsigned short row, int offset,
-					       char folded_sign, const char *str,
-					       bool *is_current_entry)
+					       const char *str, int offset,
+					       struct callchain_print_arg *arg)
 {
 	int color, width;
+	unsigned short row = arg->row;
+	char folded_sign = callchain_list__folded(chain);
 
 	color = HE_COLORSET_NORMAL;
 	width = browser->b.width - (offset + 2);
 	if (ui_browser__is_current_entry(&browser->b, row)) {
 		browser->selection = &chain->ms;
 		color = HE_COLORSET_SELECTED;
-		*is_current_entry = true;
+		arg->is_current_entry = true;
 	}
 
 	ui_browser__set_color(&browser->b, color);
@@ -498,17 +510,40 @@ static void hist_browser__show_callchain_entry(struct hist_browser *browser,
 	slsmg_write_nstring(" ", offset);
 	slsmg_printf("%c ", folded_sign);
 	slsmg_write_nstring(str, width);
+
+	/*
+	 * increase row here so that we can reuse the
+	 * hist_browser__show_callchain() for dumping the whole
+	 * callchain to a file.
+	 */
+	arg->row++;
+}
+
+static void hist_browser__fprintf_callchain_entry(struct hist_browser *b __maybe_unused,
+						  struct callchain_list *chain,
+						  const char *str, int offset,
+						  struct callchain_print_arg *arg)
+{
+	char folded_sign = callchain_list__folded(chain);
+
+	arg->printed += fprintf(arg->fp, "%*s%c %s\n", offset, " ",
+				folded_sign, str);
 }
 
+typedef void (*print_callchain_entry_fn)(struct hist_browser *browser,
+					 struct callchain_list *chain,
+					 const char *str, int offset,
+					 struct callchain_print_arg *arg);
+
 #define LEVEL_OFFSET_STEP 3
 
 static int hist_browser__show_callchain(struct hist_browser *browser,
-					struct rb_root *root, int level,
-					unsigned short row, off_t *row_offset,
-					u64 total, bool *is_current_entry)
+					struct rb_root *root, int level, u64 total,
+					print_callchain_entry_fn print,
+					struct callchain_print_arg *arg)
 {
 	struct rb_node *node;
-	int first_row = row;
+	int first_row = arg->row;
 	int offset = level * LEVEL_OFFSET_STEP;
 	bool has_single_node = (rb_first(root) == rb_last(root));
 	u64 new_total;
@@ -532,8 +567,8 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
 				extra_offset = LEVEL_OFFSET_STEP;
 
 			folded_sign = callchain_list__folded(chain);
-			if (*row_offset != 0) {
-				--*row_offset;
+			if (arg->row_offset != 0) {
+				arg->row_offset--;
 				goto do_next;
 			}
 
@@ -550,13 +585,11 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
 					str = alloc_str;
 			}
 
-			hist_browser__show_callchain_entry(browser, chain, row,
-							   offset + extra_offset,
-							   folded_sign, str,
-							   is_current_entry);
+			print(browser, chain, str, offset + extra_offset, arg);
+
 			free(alloc_str);
 
-			if (++row == browser->b.rows)
+			if (arg->row == browser->b.rows)
 				goto out;
 do_next:
 			if (folded_sign == '+')
@@ -571,16 +604,15 @@ do_next:
 		else
 			new_total = total;
 
-		row += hist_browser__show_callchain(browser, &child->rb_root,
-						    level + 1 + !!extra_offset,
-						    row, row_offset,
-						    new_total,
-						    is_current_entry);
-		if (row == browser->b.rows)
+		hist_browser__show_callchain(browser, &child->rb_root,
+					     level + 1 + !!extra_offset,
+					     new_total, print, arg);
+
+		if (arg->row == browser->b.rows)
 			break;
 	}
 out:
-	return row - first_row;
+	return arg->row - first_row;
 }
 
 struct hpp_arg {
@@ -755,16 +787,21 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 
 	if (folded_sign == '-' && row != browser->b.rows) {
 		u64 total = hists__total_period(entry->hists);
+		struct callchain_print_arg arg = {
+			.row = row,
+			.row_offset = row_offset,
+			.is_current_entry = current_entry,
+		};
 
 		if (symbol_conf.cumulate_callchain)
 			total = entry->stat_acc->period;
 
 		printed += hist_browser__show_callchain(browser,
-							&entry->sorted_chain,
-							1, row, &row_offset,
-							total, &current_entry);
+					&entry->sorted_chain, 1, total,
+					hist_browser__show_callchain_entry,
+					&arg);
 
-		if (current_entry)
+		if (arg.is_current_entry)
 			browser->he_selection = entry;
 	}
 
@@ -1020,112 +1057,6 @@ do_offset:
 	}
 }
 
-static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *browser,
-							struct callchain_node *chain_node,
-							u64 total, int level,
-							FILE *fp)
-{
-	struct rb_node *node;
-	int offset = level * LEVEL_OFFSET_STEP;
-	u64 new_total;
-	int printed = 0;
-
-	if (callchain_param.mode == CHAIN_GRAPH_REL)
-		new_total = chain_node->children_hit;
-	else
-		new_total = total;
-
-	node = rb_first(&chain_node->rb_root);
-	while (node) {
-		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
-		struct rb_node *next = rb_next(node);
-		u64 cumul = callchain_cumul_hits(child);
-		struct callchain_list *chain;
-		char folded_sign = ' ';
-		int first = true;
-		int extra_offset = 0;
-
-		list_for_each_entry(chain, &child->val, list) {
-			char bf[1024], *alloc_str;
-			const char *str;
-			bool was_first = first;
-
-			if (first)
-				first = false;
-			else
-				extra_offset = LEVEL_OFFSET_STEP;
-
-			folded_sign = callchain_list__folded(chain);
-
-			alloc_str = NULL;
-			str = callchain_list__sym_name(chain, bf, sizeof(bf),
-						       browser->show_dso);
-			if (was_first) {
-				double percent = cumul * 100.0 / new_total;
-
-				if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0)
-					str = "Not enough memory!";
-				else
-					str = alloc_str;
-			}
-
-			printed += fprintf(fp, "%*s%c %s\n", offset + extra_offset, " ", folded_sign, str);
-			free(alloc_str);
-			if (folded_sign == '+')
-				break;
-		}
-
-		if (folded_sign == '-') {
-			const int new_level = level + (extra_offset ? 2 : 1);
-			printed += hist_browser__fprintf_callchain_node_rb_tree(browser, child, new_total,
-										new_level, fp);
-		}
-
-		node = next;
-	}
-
-	return printed;
-}
-
-static int hist_browser__fprintf_callchain_node(struct hist_browser *browser,
-						struct callchain_node *node,
-						int level, FILE *fp)
-{
-	struct callchain_list *chain;
-	int offset = level * LEVEL_OFFSET_STEP;
-	char folded_sign = ' ';
-	int printed = 0;
-
-	list_for_each_entry(chain, &node->val, list) {
-		char bf[1024], *s;
-
-		folded_sign = callchain_list__folded(chain);
-		s = callchain_list__sym_name(chain, bf, sizeof(bf), browser->show_dso);
-		printed += fprintf(fp, "%*s%c %s\n", offset, " ", folded_sign, s);
-	}
-
-	if (folded_sign == '-')
-		printed += hist_browser__fprintf_callchain_node_rb_tree(browser, node,
-									browser->hists->stats.total_period,
-									level + 1,  fp);
-	return printed;
-}
-
-static int hist_browser__fprintf_callchain(struct hist_browser *browser,
-					   struct rb_root *chain, int level, FILE *fp)
-{
-	struct rb_node *nd;
-	int printed = 0;
-
-	for (nd = rb_first(chain); nd; nd = rb_next(nd)) {
-		struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
-
-		printed += hist_browser__fprintf_callchain_node(browser, node, level, fp);
-	}
-
-	return printed;
-}
-
 static int hist_browser__fprintf_entry(struct hist_browser *browser,
 				       struct hist_entry *he, FILE *fp)
 {
@@ -1161,8 +1092,20 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser,
 	}
 	printed += fprintf(fp, "%s\n", rtrim(s));
 
-	if (folded_sign == '-')
-		printed += hist_browser__fprintf_callchain(browser, &he->sorted_chain, 1, fp);
+	if (folded_sign == '-') {
+		u64 total = hists__total_period(he->hists);
+		struct callchain_print_arg arg  = {
+			.fp = fp,
+		};
+
+		if (symbol_conf.cumulate_callchain)
+			total = he->stat_acc->period;
+
+		hist_browser__show_callchain(browser, &he->sorted_chain, 1, total,
+					     hist_browser__fprintf_callchain_entry,
+					     &arg);
+		printed += arg.printed;
+	}
 
 	return printed;
 }
-- 
2.0.0

[tip:perf/core] perf hists browser: Get rid of unused 'remaining' variable

[tip-bot for Namhyung Kim]

Commit-ID:  36e15dd4027a9b088264758fea292b6e876b5cdd
Gitweb:     http://git.kernel.org/tip/36e15dd4027a9b088264758fea292b6e876b5cdd
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Wed, 20 Aug 2014 17:07:58 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 20 Aug 2014 12:14:11 -0300

perf hists browser: Get rid of unused 'remaining' variable

It seems that the 'remaining' variable is not used by any real code.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1408522080-26556-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/ui/browsers/hists.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 4892480..2f34c6b 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -488,14 +488,13 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 {
 	struct rb_node *node;
 	int first_row = row, width, offset = level * LEVEL_OFFSET_STEP;
-	u64 new_total, remaining;
+	u64 new_total;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
 		new_total = chain_node->children_hit;
 	else
 		new_total = total;
 
-	remaining = new_total;
 	node = rb_first(&chain_node->rb_root);
 	while (node) {
 		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
@@ -506,8 +505,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 		int first = true;
 		int extra_offset = 0;
 
-		remaining -= cumul;
-
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;
@@ -1084,7 +1081,7 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 {
 	struct rb_node *node;
 	int offset = level * LEVEL_OFFSET_STEP;
-	u64 new_total, remaining;
+	u64 new_total;
 	int printed = 0;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
@@ -1092,7 +1089,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 	else
 		new_total = total;
 
-	remaining = new_total;
 	node = rb_first(&chain_node->rb_root);
 	while (node) {
 		struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
@@ -1103,8 +1099,6 @@ static int hist_browser__fprintf_callchain_node_rb_tree(struct hist_browser *bro
 		int first = true;
 		int extra_offset = 0;
 
-		remaining -= cumul;
-
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;

[tip:perf/core] perf hists browser: Fix children overhead dump

[tip-bot for Namhyung Kim]

Commit-ID:  2bfa152839e5adea66aa6309c94bf3a50a5d5d47
Gitweb:     http://git.kernel.org/tip/2bfa152839e5adea66aa6309c94bf3a50a5d5d47
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Wed, 20 Aug 2014 17:07:56 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 20 Aug 2014 12:14:14 -0300

perf hists browser: Fix children overhead dump

When perf report runs on TUI, 'P' key dumps current screen to a file but
it incorrectly displayed children overhead (as same of self overhead).
This was because it fetched the value from self stats.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1408522080-26556-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/ui/hist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index b5fa701..75eb6ac 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -304,7 +304,7 @@ static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
 {										\
-	return hpp__fmt_acc(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
+	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",	\
 			    hpp_entry_scnprintf, true);				\
 }
 

[tip:perf/core] perf hists browser: Factor out hist_browser__show_callchain_entry()

[tip-bot for Namhyung Kim]

Commit-ID:  f4536ddd20d93b70d432b7ca5db873525e23c2c4
Gitweb:     http://git.kernel.org/tip/f4536ddd20d93b70d432b7ca5db873525e23c2c4
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Wed, 20 Aug 2014 17:07:57 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 20 Aug 2014 12:14:58 -0300

perf hists browser: Factor out hist_browser__show_callchain_entry()

Factor out duplicate callchain printing code into the hist_browser__
show_callchain_entry().

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1408522080-26556-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/ui/browsers/hists.c | 64 ++++++++++++++++++++++--------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 2f34c6b..d42d8a8 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -477,6 +477,29 @@ static char *callchain_list__sym_name(struct callchain_list *cl,
 	return bf;
 }
 
+static void hist_browser__show_callchain_entry(struct hist_browser *browser,
+					       struct callchain_list *chain,
+					       unsigned short row, int offset,
+					       char folded_sign, const char *str,
+					       bool *is_current_entry)
+{
+	int color, width;
+
+	color = HE_COLORSET_NORMAL;
+	width = browser->b.width - (offset + 2);
+	if (ui_browser__is_current_entry(&browser->b, row)) {
+		browser->selection = &chain->ms;
+		color = HE_COLORSET_SELECTED;
+		*is_current_entry = true;
+	}
+
+	ui_browser__set_color(&browser->b, color);
+	hist_browser__gotorc(browser, row, 0);
+	slsmg_write_nstring(" ", offset);
+	slsmg_printf("%c ", folded_sign);
+	slsmg_write_nstring(str, width);
+}
+
 #define LEVEL_OFFSET_STEP 3
 
 static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browser,
@@ -487,7 +510,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 						     bool *is_current_entry)
 {
 	struct rb_node *node;
-	int first_row = row, width, offset = level * LEVEL_OFFSET_STEP;
+	int first_row = row, offset = level * LEVEL_OFFSET_STEP;
 	u64 new_total;
 
 	if (callchain_param.mode == CHAIN_GRAPH_REL)
@@ -508,7 +531,6 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 		list_for_each_entry(chain, &child->val, list) {
 			char bf[1024], *alloc_str;
 			const char *str;
-			int color;
 			bool was_first = first;
 
 			if (first)
@@ -534,19 +556,10 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
 					str = alloc_str;
 			}
 
-			color = HE_COLORSET_NORMAL;
-			width = browser->b.width - (offset + extra_offset + 2);
-			if (ui_browser__is_current_entry(&browser->b, row)) {
-				browser->selection = &chain->ms;
-				color = HE_COLORSET_SELECTED;
-				*is_current_entry = true;
-			}
-
-			ui_browser__set_color(&browser->b, color);
-			hist_browser__gotorc(browser, row, 0);
-			slsmg_write_nstring(" ", offset + extra_offset);
-			slsmg_printf("%c ", folded_sign);
-			slsmg_write_nstring(str, width);
+			hist_browser__show_callchain_entry(browser, chain, row,
+							   offset + extra_offset,
+							   folded_sign, str,
+							   is_current_entry);
 			free(alloc_str);
 
 			if (++row == browser->b.rows)
@@ -577,14 +590,12 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser,
 					     bool *is_current_entry)
 {
 	struct callchain_list *chain;
-	int first_row = row,
-	     offset = level * LEVEL_OFFSET_STEP,
-	     width = browser->b.width - offset;
+	int first_row = row;
+	int offset = level * LEVEL_OFFSET_STEP;
 	char folded_sign = ' ';
 
 	list_for_each_entry(chain, &node->val, list) {
 		char bf[1024], *s;
-		int color;
 
 		folded_sign = callchain_list__folded(chain);
 
@@ -593,20 +604,11 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser,
 			continue;
 		}
 
-		color = HE_COLORSET_NORMAL;
-		if (ui_browser__is_current_entry(&browser->b, row)) {
-			browser->selection = &chain->ms;
-			color = HE_COLORSET_SELECTED;
-			*is_current_entry = true;
-		}
-
 		s = callchain_list__sym_name(chain, bf, sizeof(bf),
 					     browser->show_dso);
-		hist_browser__gotorc(browser, row, 0);
-		ui_browser__set_color(&browser->b, color);
-		slsmg_write_nstring(" ", offset);
-		slsmg_printf("%c ", folded_sign);
-		slsmg_write_nstring(s, width - 2);
+		hist_browser__show_callchain_entry(browser, chain, row,
+						   offset, folded_sign, s,
+						   is_current_entry);
 
 		if (++row == browser->b.rows)
 			goto out;