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Date: Mon, 11 May 2015 12:28:35 +0000 From: He Kuang <hekuang@...wei.com> To: <acme@...nel.org>, <jolsa@...nel.org>, <mingo@...hat.com>, <a.p.zijlstra@...llo.nl> CC: <wangnan0@...wei.com>, <linux-kernel@...r.kernel.org> Subject: [PATCH 1/2] perf tests: Fix to get negative exit codes WEXITSTATUS consists of the least significant 8 bits of the status argument, so we should convert the value to signed char if we have valid negative exit codes. And the return value of test->func() contains negative values: enum { TEST_OK = 0, TEST_FAIL = -1, TEST_SKIP = -2, }; Before this patch: $ perf test -v 1 ... test child finished with 254 ---- end ---- vmlinux symtab matches kallsyms: FAILED! After this patch: $ perf test -v 1 ... test child finished with -2 ---- end ---- vmlinux symtab matches kallsyms: Skip Signed-off-by: He Kuang <hekuang@...wei.com> --- tools/perf/tests/builtin-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 4f40981..f42af98 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -219,7 +219,7 @@ static int run_test(struct test *test) wait(&status); if (WIFEXITED(status)) { - err = WEXITSTATUS(status); + err = (signed char)WEXITSTATUS(status); pr_debug("test child finished with %d\n", err); } else if (WIFSIGNALED(status)) { err = -1; -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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