linux-kernel - [PATCH V5 4/9] perf tools: add map__find_other_map

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Date:	Tue,  8 Oct 2013 11:45:51 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH V5 4/9] perf tools: add map__find_other_map_symbol()

Add a function to find a symbol using an ip that
might be on a different map.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/util/map.c | 27 +++++++++++++++++++++++++++
 tools/perf/util/map.h |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 4f6680d..beedeef 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -213,6 +213,33 @@ struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
 	return dso__find_symbol_by_name(map->dso, map->type, name);
 }
 
+struct symbol *map__find_other_map_symbol(struct map **map_ptr, u64 *ip_ptr,
+					  symbol_filter_t filter)
+{
+	struct map *map = *map_ptr;
+	u64 ip = *ip_ptr;
+	struct map *sym_map = NULL;
+	struct symbol *sym;
+
+	if (ip >= map->start && ip <= map->end)
+		sym_map = map;
+	else if (map->groups)
+		sym_map = map_groups__find(map->groups, map->type, ip);
+
+	if (!sym_map)
+		return NULL;
+
+	ip = sym_map->map_ip(sym_map, ip);
+
+	sym = map__find_symbol(sym_map, ip, filter);
+	if (sym) {
+		*map_ptr = sym_map;
+		*ip_ptr = ip;
+	}
+
+	return sym;
+}
+
 struct map *map__clone(struct map *map)
 {
 	return memdup(map, sizeof(*map));
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 4886ca2..b7b494c 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -106,6 +106,8 @@ struct symbol *map__find_symbol(struct map *map,
 				u64 addr, symbol_filter_t filter);
 struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
 					symbol_filter_t filter);
+struct symbol *map__find_other_map_symbol(struct map **map_ptr, u64 *ip_ptr,
+					  symbol_filter_t filter);
 void map__fixup_start(struct map *map);
 void map__fixup_end(struct map *map);
 
-- 
1.7.11.7

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