[PATCH v7 18/30] selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ANY.
From: Elizabeth Figura <zfigura@codeweavers.com>
Date: 2024-12-13 19:35:53
Also in:
linux-doc, linux-kselftest, lkml
Subsystem:
kernel selftest framework, ntsync synchronization primitive driver, the rest · Maintainers:
Shuah Khan, Elizabeth Figura, Linus Torvalds
Test basic synchronous functionality of NTSYNC_IOC_WAIT_ANY, when objects are considered signaled or not signaled, and how they are affected by a successful wait. Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com> --- .../testing/selftests/drivers/ntsync/ntsync.c | 114 ++++++++++++++++++ 1 file changed, 114 insertions(+)
diff --git a/tools/testing/selftests/drivers/ntsync/ntsync.c b/tools/testing/selftests/drivers/ntsync/ntsync.c
index 4db65490b6a1..9781a74253ee 100644
--- a/tools/testing/selftests/drivers/ntsync/ntsync.c
+++ b/tools/testing/selftests/drivers/ntsync/ntsync.c@@ -329,4 +329,118 @@ TEST(mutex_state) close(fd); } +TEST(test_wait_any) +{ + int objs[NTSYNC_MAX_WAIT_COUNT + 1], fd, ret; + struct ntsync_mutex_args mutex_args = {0}; + struct ntsync_sem_args sem_args = {0}; + __u32 owner, index, count, i; + struct timespec timeout; + + clock_gettime(CLOCK_MONOTONIC, &timeout); + + fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY); + ASSERT_LE(0, fd); + + sem_args.count = 2; + sem_args.max = 3; + objs[0] = ioctl(fd, NTSYNC_IOC_CREATE_SEM, &sem_args); + EXPECT_LE(0, objs[0]); + + mutex_args.owner = 0; + mutex_args.count = 0; + objs[1] = ioctl(fd, NTSYNC_IOC_CREATE_MUTEX, &mutex_args); + EXPECT_LE(0, objs[1]); + + ret = wait_any(fd, 2, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, index); + check_sem_state(objs[0], 1, 3); + check_mutex_state(objs[1], 0, 0); + + ret = wait_any(fd, 2, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, index); + check_sem_state(objs[0], 0, 3); + check_mutex_state(objs[1], 0, 0); + + ret = wait_any(fd, 2, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(1, index); + check_sem_state(objs[0], 0, 3); + check_mutex_state(objs[1], 1, 123); + + count = 1; + ret = release_sem(objs[0], &count); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, count); + + ret = wait_any(fd, 2, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, index); + check_sem_state(objs[0], 0, 3); + check_mutex_state(objs[1], 1, 123); + + ret = wait_any(fd, 2, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(1, index); + check_sem_state(objs[0], 0, 3); + check_mutex_state(objs[1], 2, 123); + + ret = wait_any(fd, 2, objs, 456, &index); + EXPECT_EQ(-1, ret); + EXPECT_EQ(ETIMEDOUT, errno); + + owner = 123; + ret = ioctl(objs[1], NTSYNC_IOC_MUTEX_KILL, &owner); + EXPECT_EQ(0, ret); + + ret = wait_any(fd, 2, objs, 456, &index); + EXPECT_EQ(-1, ret); + EXPECT_EQ(EOWNERDEAD, errno); + EXPECT_EQ(1, index); + + ret = wait_any(fd, 2, objs, 456, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(1, index); + + close(objs[1]); + + /* test waiting on the same object twice */ + + count = 2; + ret = release_sem(objs[0], &count); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, count); + + objs[1] = objs[0]; + ret = wait_any(fd, 2, objs, 456, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, index); + check_sem_state(objs[0], 1, 3); + + ret = wait_any(fd, 0, NULL, 456, &index); + EXPECT_EQ(-1, ret); + EXPECT_EQ(ETIMEDOUT, errno); + + for (i = 1; i < NTSYNC_MAX_WAIT_COUNT + 1; ++i) + objs[i] = objs[0]; + + ret = wait_any(fd, NTSYNC_MAX_WAIT_COUNT, objs, 123, &index); + EXPECT_EQ(0, ret); + EXPECT_EQ(0, index); + + ret = wait_any(fd, NTSYNC_MAX_WAIT_COUNT + 1, objs, 123, &index); + EXPECT_EQ(-1, ret); + EXPECT_EQ(EINVAL, errno); + + ret = wait_any(fd, -1, objs, 123, &index); + EXPECT_EQ(-1, ret); + EXPECT_EQ(EINVAL, errno); + + close(objs[0]); + + close(fd); +} + TEST_HARNESS_MAIN
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2.45.2