[PATCH 4.9 18/74] Revert "perf tools: Decompress kernel module when reading DSO data"

From: Greg Kroah-Hartman
Date: Fri Apr 27 2018 - 11:06:31 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

This reverts commit e2d054998b151e85b6305aa72264f67097bd78e9 which is
commit 1d6b3c9ba756a5134fd7ad1959acac776d17404b upstream.

It breaks the build, so obviously none of us actually tested it :(

Reported-by: Maxime Hadjinlian <maxime.hadjinlian@xxxxxxxxx>
Reported-by: Akemi Yagi <toracat@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: kernel-team@xxxxxxx
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/perf/util/dso.c | 16 ----------------
1 file changed, 16 deletions(-)

--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -366,23 +366,7 @@ static int __open_dso(struct dso *dso, s
if (!is_regular_file(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 -dso->load_errno;
- }
-
- strcpy(name, newpath);
- }
-
fd = do_open(name);
-
- if (dso__needs_decompress(dso))
- unlink(name);
-
free(name);
return fd;
}