Commit e2d05499 authored Jun 08, 2017 by Namhyung Kim Committed by Greg Kroah-Hartman Apr 13, 2018

perf tools: Decompress kernel module when reading DSO data




[ 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@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170608073109.30699-6-namhyung@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b3ec3723

tools/perf/util/dso.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}