linux-kernel - [tip:perf/core] perf ui/gtk: Support folded callchains

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Message-ID: <tip-2c6caff2b26fde8f3f87183f8c97f2cebfdbcb98@git.kernel.org>
Date:	Mon, 23 Nov 2015 08:16:04 -0800
From:	tip-bot for Namhyung Kim <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	andi@...stfloor.org, namhyung@...nel.org, acme@...hat.com,
	a.p.zijlstra@...llo.nl, fweisbec@...il.com, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, kan.liang@...el.com,
	brendan.d.gregg@...il.com, dsahern@...il.com, hpa@...or.com,
	penberg@...nel.org, jolsa@...hat.com, mingo@...nel.org
Subject: [tip:perf/core] perf ui/gtk: Support folded callchains

Commit-ID:  2c6caff2b26fde8f3f87183f8c97f2cebfdbcb98
Gitweb:     http://git.kernel.org/tip/2c6caff2b26fde8f3f87183f8c97f2cebfdbcb98
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Mon, 9 Nov 2015 14:45:46 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 19 Nov 2015 13:19:26 -0300

perf ui/gtk: Support folded callchains

The folded callchain mode is to print all chains in a single line.
Currently perf report --gtk doesn't support folded callchains.  Like
flat callchains, only leaf nodes are added to the final rbtree so it
should show entries in parent nodes.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Tested-by: Brendan Gregg <brendan.d.gregg@...il.com>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Pekka Enberg <penberg@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1447047946-1691-11-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/gtk/hists.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 0b24cd6..4677172 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -152,6 +152,66 @@ static void perf_gtk__add_callchain_flat(struct rb_root *root, GtkTreeStore *sto
 	}
 }
 
+static void perf_gtk__add_callchain_folded(struct rb_root *root, GtkTreeStore *store,
+					   GtkTreeIter *parent, int col, u64 total)
+{
+	struct rb_node *nd;
+
+	for (nd = rb_first(root); nd; nd = rb_next(nd)) {
+		struct callchain_node *node;
+		struct callchain_list *chain;
+		GtkTreeIter iter;
+		char buf[64];
+		char *str, *str_alloc = NULL;
+		bool first = true;
+
+		node = rb_entry(nd, struct callchain_node, rb_node);
+
+		callchain_node__make_parent_list(node);
+
+		list_for_each_entry(chain, &node->parent_val, list) {
+			char name[1024];
+
+			callchain_list__sym_name(chain, name, sizeof(name), false);
+
+			if (asprintf(&str, "%s%s%s",
+				     first ? "" : str_alloc,
+				     first ? "" : symbol_conf.field_sep ?: "; ",
+				     name) < 0)
+				return;
+
+			first = false;
+			free(str_alloc);
+			str_alloc = str;
+		}
+
+		list_for_each_entry(chain, &node->val, list) {
+			char name[1024];
+
+			callchain_list__sym_name(chain, name, sizeof(name), false);
+
+			if (asprintf(&str, "%s%s%s",
+				     first ? "" : str_alloc,
+				     first ? "" : symbol_conf.field_sep ?: "; ",
+				     name) < 0)
+				return;
+
+			first = false;
+			free(str_alloc);
+			str_alloc = str;
+		}
+
+		gtk_tree_store_append(store, &iter, parent);
+
+		callchain_node__scnprintf_value(node, buf, sizeof(buf), total);
+		gtk_tree_store_set(store, &iter, 0, buf, -1);
+
+		gtk_tree_store_set(store, &iter, col, str, -1);
+
+		free(str_alloc);
+	}
+}
+
 static void perf_gtk__add_callchain_graph(struct rb_root *root, GtkTreeStore *store,
 					  GtkTreeIter *parent, int col, u64 total)
 {
@@ -207,6 +267,8 @@ static void perf_gtk__add_callchain(struct rb_root *root, GtkTreeStore *store,
 {
 	if (callchain_param.mode == CHAIN_FLAT)
 		perf_gtk__add_callchain_flat(root, store, parent, col, total);
+	else if (callchain_param.mode == CHAIN_FOLDED)
+		perf_gtk__add_callchain_folded(root, store, parent, col, total);
 	else
 		perf_gtk__add_callchain_graph(root, store, parent, col, total);
 }
--
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