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perf tools: Decompress kernel module when reading DSO data

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[ 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>
This commit is contained in:
Namhyung Kim 2017-06-08 16:31:05 +09:00 committed by Greg Kroah-Hartman
parent b3ec3723a4
commit e2d054998b
1 changed files with 16 additions and 0 deletions
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16
tools/perf/util/dso.c
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@ -366,7 +366,23 @@ static int __open_dso(struct dso *dso, struct machine *machine)
if (!is_regular_file(name)) if (!is_regular_file(name))
return -EINVAL; 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); fd = do_open(name);
if (dso__needs_decompress(dso))
unlink(name);
free(name); free(name);
return fd; return fd;
} }