[PATCH v7 26/30] selftests: ntsync: Add some tests for wakeup signaling via alerts.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: 2024-12-13 19:36:09
Also in:
linux-doc, linux-kselftest, lkml
Subsystem:
kernel selftest framework, ntsync synchronization primitive driver, the rest · Maintainers:
Shuah Khan, Elizabeth Figura, Linus Torvalds
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 72f078dde444..298b279729aa 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c@@ -1063,9 +1063,12 @@ 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], event, fd, ret; + pthread_t thread; fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY); ASSERT_LE(0, fd);
@@ -1107,6 +1110,34 @@ TEST(alert_any) EXPECT_EQ(0, ret); EXPECT_EQ(2, index); + /* test wakeup via alert */ + + ret = ioctl(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; + 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, 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); /* test with an auto-reset event */
@@ -1143,9 +1174,12 @@ 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], event, fd, ret; + pthread_t thread; fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY); ASSERT_LE(0, fd);
@@ -1173,6 +1207,34 @@ TEST(alert_all) EXPECT_EQ(0, ret); EXPECT_EQ(2, index); + /* test wakeup via alert */ + + ret = ioctl(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; + 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, 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); /* test with an auto-reset event */
--
2.45.2