[PATCH v4 5/9] perf tools: Decompress kernel module when reading DSO data

[Namhyung Kim]

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

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

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index b346b8eba65c..c63525d845c5 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -475,7 +475,23 @@ static int __open_dso(struct dso *dso, struct machine 
*machine)
                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 -dso->load_errno;
+               }
+
+               strcpy(name, newpath);
+       }
+
        fd = do_open(name);
+
+       if (dso__needs_decompress(dso))
+               unlink(name);
+
        free(name);
        return fd;
 }
-- 
2.13.1