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Date:	Mon, 14 Jul 2014 13:02:50 +0300
From:	Adrian Hunter <>
To:	Arnaldo Carvalho de Melo <>
Cc:	Peter Zijlstra <>,, David Ahern <>,
	Frederic Weisbecker <>,
	Jiri Olsa <>,
	Namhyung Kim <>,
	Paul Mackerras <>,
	Stephane Eranian <>
Subject: [PATCH 26/41] perf tools: Add ability to iterate over a dso's symbols

Expose dso__first_symbol() and dso__next_symbol() to make
it possible to iterate over a dso's symbols.

Signed-off-by: Adrian Hunter <>
 tools/perf/util/symbol.c | 17 ++++++++++++++++-
 tools/perf/util/symbol.h |  3 +++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 21b2e45..d5dc547 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -341,6 +341,16 @@ static struct symbol *symbols__first(struct rb_root *symbols)
 	return NULL;
+static struct symbol *symbols__next(struct symbol *sym)
+	struct rb_node *n = rb_next(&sym->rb_node);
+	if (n)
+		return rb_entry(n, struct symbol, rb_node);
+	return NULL;
 struct symbol_name_rb_node {
 	struct rb_node	rb_node;
 	struct symbol	sym;
@@ -411,11 +421,16 @@ struct symbol *dso__find_symbol(struct dso *dso,
 	return symbols__find(&dso->symbols[type], addr);
-static struct symbol *dso__first_symbol(struct dso *dso, enum map_type type)
+struct symbol *dso__first_symbol(struct dso *dso, enum map_type type)
 	return symbols__first(&dso->symbols[type]);
+struct symbol *dso__next_symbol(struct symbol *sym)
+	return symbols__next(sym);
 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
 					const char *name)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 6ba8a22..e1350bc 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -239,6 +239,9 @@ struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
 					const char *name);
+struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
+struct symbol *dso__next_symbol(struct symbol *sym);
 int filename__read_build_id(const char *filename, void *bf, size_t size);
 int sysfs__read_build_id(const char *filename, void *bf, size_t size);
 int modules__parse(const char *filename, void *arg,

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