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[PATCH 2/5] perf buildid-list: Fix return value of perf buildid-list -k

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  [PATCH 2/5] perf buildid-list: Fix return value of perf buildid-list -k Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-07 21:10 +0100

#1285883 — [PATCH 2/5] perf buildid-list: Fix return value of perf buildid-list -k

From: Michael Petlan <mpetlan@redhat.com>

The buildid string length is returned by perf buildid-list -k command.
Since a non-zero return value means an error, perf buildid-list -k cmd
should return 0 when successful instead.

Before:

	# perf buildid-list -k
	39356d74e96e02346fe0ec1f3f162b6c522bac62
	# echo $?
	41

After:

	# perf buildid-list -k
	39356d74e96e02346fe0ec1f3f162b6c522bac62
	# echo $?
	0

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Fixes: 0b5a7935f3b5 ("perf buildid: Introduce sysfs/filename__sprintf_build_id")
LPU-Reference: 1449080871.24573.145.camel@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-buildid-list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 918b4de29de4..6419f57b0850 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -110,7 +110,7 @@ int cmd_buildid_list(int argc, const char **argv,
 	setup_pager();
 
 	if (show_kernel)
-		return sysfs__fprintf_build_id(stdout);
+		return !(sysfs__fprintf_build_id(stdout) > 0);
 
 	return perf_session__list_build_ids(force, with_hits);
 }
-- 
2.1.0

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