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authorJiri Olsa <jolsa@kernel.org>2018-08-17 11:48:10 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-08-20 08:54:59 -0300
commit8b42b7e5e8b5692bc5e57342bf00c40d64978407 (patch)
tree92cf5327174b5136e4ab83f080f4c3cad98c87cc /tools/perf/util/lzma.c
parentc9a8a6131fb68f6eabec34fd855e69b4855155e4 (diff)
perf tools: Add is_compressed callback to compressions array
Add is_compressed callback to the compressions array, that returns 0 if the file is compressed or != 0 if not. The new callback is used to recognize the situation when we have a 'compressed' object, like: /lib/modules/.../drivers/net/ethernet/intel/igb/igb.ko.xz but we need to read its debug data from debuginfo files, which might not be compressed, like: /root/.debug/.build-id/d6/...c4b301f/debug So even for a 'compressed' object we read debug data from a plain uncompressed object. To keep this transparent, we detect this in decompress_kmodule() and return the file descriptor to the uncompressed file. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180817094813.15086-11-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/lzma.c')
-rw-r--r--tools/perf/util/lzma.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/lzma.c b/tools/perf/util/lzma.c
index 07498eaddc08..7032caaf75eb 100644
--- a/tools/perf/util/lzma.c
+++ b/tools/perf/util/lzma.c
@@ -99,3 +99,8 @@ err_fclose:
fclose(infile);
return err;
}
+
+bool lzma_is_compressed(const char *input __maybe_unused)
+{
+ return true;
+}