[PATCH v3 3/6] perf tools: Decompress kernel module when reading DSO data

[Namhyung Kim <namhyung@kernel.org>]

Currently perf decompresses kernel modules when loading symbol table but
it missed to do it when reading raw data.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/util/dso.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index 59257ce4580e..2a0c689227f8 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -463,8 +463,22 @@ static int __open_dso(struct dso *dso, struct machine *machine)
 		return -EINVAL;
 	}
 
-	if (!is_regular_file(name))
+	if (!is_regular_file(name)) {
+		free(name);
 		return -EINVAL;
+	}
+
+	if (dso__needs_decompress(dso)) {
+		char newpath[KMOD_DECOMP_LEN];
+		size_t len = sizeof(newpath);
+
+		if (dso__decompress_kmodule_path(dso, name, newpath, len) < 0) {
+			free(name);
+			return -1;
+		}
+
+		strcpy(name, newpath);
+	}
 
 	fd = do_open(name);
 	free(name);
-- 
2.13.0