From: Namhyung Kim <namhyung@xxxxxxxxxx> [ Upstream commit 1d6b3c9ba756a5134fd7ad1959acac776d17404b ] Currently perf decompresses kernel modules when loading the symbol table but it missed to do it when reading raw data. Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx> Acked-by: 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 Link: http://lkml.kernel.org/r/20170608073109.30699-6-namhyung@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> --- 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 d2c6cdd9d42b..4bc58822416c 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -366,7 +366,23 @@ static int __open_dso(struct dso *dso, struct machine *machine) 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; } -- 2.15.1