linux-kernel - [PATCH v2 2/6] selftests: breakpoints: fix computation of test plan

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Date:   Mon, 22 Jun 2020 20:15:43 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     shuah@...nel.org, linux-kselftest@...r.kernel.org
Subject: [PATCH v2 2/6] selftests: breakpoints: fix computation of test plan

The computation of the test plan uses the available_cpus bitset
before calling sched_getaffinity to fill it in.  The resulting
plan is bogus, fix it.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 .../selftests/breakpoints/step_after_suspend_test.c       | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/breakpoints/step_after_suspend_test.c b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
index b3ead29c6089..983ee6182e25 100644
--- a/tools/testing/selftests/breakpoints/step_after_suspend_test.c
+++ b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
@@ -183,6 +183,10 @@ int main(int argc, char **argv)
 		}
 	}
 
+	err = sched_getaffinity(0, sizeof(available_cpus), &available_cpus);
+	if (err < 0)
+		ksft_exit_fail_msg("sched_getaffinity() failed\n");
+
 	for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
 		if (!CPU_ISSET(cpu, &available_cpus))
 			continue;
@@ -193,10 +197,6 @@ int main(int argc, char **argv)
 	if (do_suspend)
 		suspend();
 
-	err = sched_getaffinity(0, sizeof(available_cpus), &available_cpus);
-	if (err < 0)
-		ksft_exit_fail_msg("sched_getaffinity() failed\n");
-
 	for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
 		bool test_success;
 
-- 
2.26.2