linux-kernel - [PATCH 12/19] perf symbols: Precisely specify if dso->{long,short}

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Date:	Sun,  1 Aug 2010 22:08:47 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 12/19] perf symbols: Precisely specify if dso->{long,short}_name should be freed

From: Arnaldo Carvalho de Melo <acme@...hat.com>

Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/event.c  |    1 +
 tools/perf/util/symbol.c |    5 ++++-
 tools/perf/util/symbol.h |    4 +++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 5b81bb2..8151d23 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -456,6 +456,7 @@ static int event__process_kernel_mmap(event_t *self,
 			goto out_problem;
 
 		map->dso->short_name = name;
+		map->dso->sname_alloc = 1;
 		map->end = map->start + self->mmap.len;
 	} else if (is_kernel_mmap) {
 		const char *symbol_name = (self->mmap.filename +
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index bc6e7e8..242d2b2 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -224,7 +224,9 @@ void dso__delete(struct dso *self)
 	int i;
 	for (i = 0; i < MAP__NR_TYPES; ++i)
 		symbols__delete(&self->symbols[i]);
-	if (self->long_name != self->name)
+	if (self->sname_alloc)
+		free((char *)self->short_name);
+	if (self->lname_alloc)
 		free(self->long_name);
 	free(self);
 }
@@ -1530,6 +1532,7 @@ static int map_groups__set_modules_path_dir(struct map_groups *self,
 			if (long_name == NULL)
 				goto failure;
 			dso__set_long_name(map->dso, long_name);
+			map->dso->lname_alloc = 1;
 			dso__kernel_module_get_build_id(map->dso, "");
 		}
 	}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 6452a07..f29f73c 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -126,12 +126,14 @@ struct dso {
 	struct list_head node;
 	struct rb_root	 symbols[MAP__NR_TYPES];
 	struct rb_root	 symbol_names[MAP__NR_TYPES];
+	enum dso_kernel_type	kernel;
 	u8		 adjust_symbols:1;
 	u8		 slen_calculated:1;
 	u8		 has_build_id:1;
-	enum dso_kernel_type	kernel;
 	u8		 hit:1;
 	u8		 annotate_warned:1;
+	u8		 sname_alloc:1;
+	u8		 lname_alloc:1;
 	unsigned char	 origin;
 	u8		 sorted_by_name;
 	u8		 loaded;
-- 
1.6.2.5

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