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From: Elizabeth Figura <zfigura@codeweavers.com>
To: Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <shuah@kernel.org>
Cc: linux-kernel@vger.kernel.org,
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	Arkadiusz Hiler <ahiler@codeweavers.com>,
	Peter Zijlstra <peterz@infradead.org>,
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	linux-doc@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	Randy Dunlap <rdunlap@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Will Deacon <will@kernel.org>,
	Waiman Long <longman@redhat.com>,
	Boqun Feng <boqun.feng@gmail.com>,
	Elizabeth Figura <zfigura@codeweavers.com>
Subject: [PATCH v5 24/28] selftests: ntsync: Add some tests for wakeup signaling via alerts.
Date: Sun, 19 May 2024 15:24:50 -0500
Message-ID: <20240519202454.1192826-25-zfigura@codeweavers.com>
In-Reply-To: <20240519202454.1192826-1-zfigura@codeweavers.com>
References: <20240519202454.1192826-1-zfigura@codeweavers.com>
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Expand the alert tests to cover alerting a thread mid-wait, to test that the
relevant scheduling logic works correctly.

Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
 .../testing/selftests/drivers/ntsync/ntsync.c | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 5465a16d38b3..968874d7e325 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c
@@ -1113,9 +1113,12 @@ TEST(wake_all)
 TEST(alert_any)
 {
 	struct ntsync_event_args event_args = {0};
+	struct ntsync_wait_args wait_args = {0};
 	struct ntsync_sem_args sem_args = {0};
 	__u32 index, count, signaled;
+	struct wait_args thread_args;
 	int objs[2], fd, ret;
+	pthread_t thread;
 
 	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
 	ASSERT_LE(0, fd);
@@ -1163,6 +1166,34 @@ TEST(alert_any)
 	EXPECT_EQ(0, ret);
 	EXPECT_EQ(2, index);
 
+	/* test wakeup via alert */
+
+	ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+	EXPECT_EQ(0, ret);
+
+	wait_args.timeout = get_abs_timeout(1000);
+	wait_args.objs = (uintptr_t)objs;
+	wait_args.count = 2;
+	wait_args.owner = 123;
+	wait_args.index = 0xdeadbeef;
+	wait_args.alert = event_args.event;
+	thread_args.fd = fd;
+	thread_args.args = &wait_args;
+	thread_args.request = NTSYNC_IOC_WAIT_ANY;
+	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
+	EXPECT_EQ(0, ret);
+
+	ret = wait_for_thread(thread, 100);
+	EXPECT_EQ(ETIMEDOUT, ret);
+
+	ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+	EXPECT_EQ(0, ret);
+
+	ret = wait_for_thread(thread, 100);
+	EXPECT_EQ(0, ret);
+	EXPECT_EQ(0, thread_args.ret);
+	EXPECT_EQ(2, wait_args.index);
+
 	close(event_args.event);
 
 	/* test with an auto-reset event */
@@ -1199,9 +1230,12 @@ TEST(alert_any)
 TEST(alert_all)
 {
 	struct ntsync_event_args event_args = {0};
+	struct ntsync_wait_args wait_args = {0};
 	struct ntsync_sem_args sem_args = {0};
+	struct wait_args thread_args;
 	__u32 index, count, signaled;
 	int objs[2], fd, ret;
+	pthread_t thread;
 
 	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);
 	ASSERT_LE(0, fd);
@@ -1235,6 +1269,34 @@ TEST(alert_all)
 	EXPECT_EQ(0, ret);
 	EXPECT_EQ(2, index);
 
+	/* test wakeup via alert */
+
+	ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_RESET, &signaled);
+	EXPECT_EQ(0, ret);
+
+	wait_args.timeout = get_abs_timeout(1000);
+	wait_args.objs = (uintptr_t)objs;
+	wait_args.count = 2;
+	wait_args.owner = 123;
+	wait_args.index = 0xdeadbeef;
+	wait_args.alert = event_args.event;
+	thread_args.fd = fd;
+	thread_args.args = &wait_args;
+	thread_args.request = NTSYNC_IOC_WAIT_ALL;
+	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);
+	EXPECT_EQ(0, ret);
+
+	ret = wait_for_thread(thread, 100);
+	EXPECT_EQ(ETIMEDOUT, ret);
+
+	ret = ioctl(event_args.event, NTSYNC_IOC_EVENT_SET, &signaled);
+	EXPECT_EQ(0, ret);
+
+	ret = wait_for_thread(thread, 100);
+	EXPECT_EQ(0, ret);
+	EXPECT_EQ(0, thread_args.ret);
+	EXPECT_EQ(2, wait_args.index);
+
 	close(event_args.event);
 
 	/* test with an auto-reset event */
-- 
2.43.0