linux-kernel - [PATCH v2] selftests: sched: Add more core schedule prctl calls

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Message-Id: <20230327201855.121821-1-ivan.orlov0322@gmail.com>
Date:   Tue, 28 Mar 2023 00:18:55 +0400
From:   Ivan Orlov <ivan.orlov0322@...il.com>
To:     skhan@...uxfoundation.org
Cc:     Ivan Orlov <ivan.orlov0322@...il.com>, himadrispandya@...il.com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: [PATCH v2] selftests: sched: Add more core schedule prctl calls

The core sched kselftest makes prctl calls only with correct
parameters. This patch will extend this test with more core
schedule prctl calls with wrong parameters to increase code
coverage.

Signed-off-by: Ivan Orlov <ivan.orlov0322@...il.com>
---
V1 -> V2: Unnecessary printing removed - 'validate' will
automatically print the message in case or error

 tools/testing/selftests/sched/cs_prctl_test.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/sched/cs_prctl_test.c b/tools/testing/selftests/sched/cs_prctl_test.c
index 25e0d95d3713..3e1619b6bf2d 100644
--- a/tools/testing/selftests/sched/cs_prctl_test.c
+++ b/tools/testing/selftests/sched/cs_prctl_test.c
@@ -334,6 +334,12 @@ int main(int argc, char *argv[])
 	validate(get_cs_cookie(pid) != 0);
 	validate(get_cs_cookie(pid) == get_cs_cookie(procs[pidx].thr_tids[0]));
 
+	validate(_prctl(PR_SCHED_CORE, PR_SCHED_CORE_MAX, 0, PIDTYPE_PGID, 0) < 0
+		&& errno == EINVAL);
+
+	validate(_prctl(PR_SCHED_CORE, PR_SCHED_CORE_SHARE_TO, 0, PIDTYPE_PGID, 1) < 0
+		&& errno == EINVAL);
+
 	if (errors) {
 		printf("TESTS FAILED. errors: %d\n", errors);
 		res = 10;
-- 
2.34.1