[LTP] [PATCH 2/2] io_uring.h: Remove io_uring_setup_supported_by_kernel()

[Zhao Gongyi]

There is a kernel config CONFIG_IO_URING to control whether
io_uring is supported, so checking of the kernel version seems
redundant.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
---
 include/lapi/io_uring.h                         | 13 -------------
 testcases/kernel/syscalls/io_uring/io_uring01.c |  1 -
 testcases/kernel/syscalls/io_uring/io_uring02.c |  2 --
 3 files changed, 16 deletions(-)

diff --git a/include/lapi/io_uring.h b/include/lapi/io_uring.h
index 397324511..8f1dfd64c 100644
--- a/include/lapi/io_uring.h
+++ b/include/lapi/io_uring.h
@@ -294,17 +294,4 @@ static inline int io_uring_enter(int fd, unsigned int to_submit,
 }
 #endif /* HAVE_IO_URING_ENTER */

-static inline void io_uring_setup_supported_by_kernel(void)
-{
-	long ret;
-	if ((tst_kvercmp(5, 1, 0)) < 0) {
-		ret = syscall(__NR_io_uring_setup, NULL, 0);
-		if (ret != -1)
-			SAFE_CLOSE(ret);
-		else if (errno == ENOSYS)
-			tst_brk(TCONF,
-				"Test not supported on kernel version < v5.1");
-	}
-}
-
 #endif /* LAPI_IO_URING_H__ */
diff --git a/testcases/kernel/syscalls/io_uring/io_uring01.c b/testcases/kernel/syscalls/io_uring/io_uring01.c
index cb1cabcb7..41aa05da0 100644
--- a/testcases/kernel/syscalls/io_uring/io_uring01.c
+++ b/testcases/kernel/syscalls/io_uring/io_uring01.c
@@ -252,7 +252,6 @@ static void run(unsigned int n)

 static void setup(void)
 {
-	io_uring_setup_supported_by_kernel();
 	tst_fill_file(TEST_FILE, 'a', 1024, 1);
 }

diff --git a/testcases/kernel/syscalls/io_uring/io_uring02.c b/testcases/kernel/syscalls/io_uring/io_uring02.c
index c7ea87ae5..a04e759f8 100644
--- a/testcases/kernel/syscalls/io_uring/io_uring02.c
+++ b/testcases/kernel/syscalls/io_uring/io_uring02.c
@@ -75,8 +75,6 @@ static void setup(void)
 	if (ret >= (int)sizeof(addr.sun_path))
 		tst_brk(TBROK, "Tempdir path is too long");

-	io_uring_setup_supported_by_kernel();
-
 	sendsock = SAFE_SOCKET(AF_UNIX, SOCK_DGRAM, 0);
 	recvsock = SAFE_SOCKET(AF_UNIX, SOCK_DGRAM, 0);
 	SAFE_BIND(recvsock, (struct sockaddr *)&addr, sizeof(addr));
--
2.17.1