linux-kernel - [PATCH 6/7] kselftest/arm64: tpidr2: Switch to waitpid() over wait4()

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Message-Id: <20250821-nolibc-enosys-v1-6-4b63f2caaa89@weissschuh.net>
Date: Thu, 21 Aug 2025 17:40:37 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Catalin Marinas <catalin.marinas@....com>, 
 Will Deacon <will@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 6/7] kselftest/arm64: tpidr2: Switch to waitpid() over
 wait4()

wait4() is deprecated, non-standard and about to be removed from nolibc.

Switch to the equivalent waitpid() call.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/testing/selftests/arm64/abi/tpidr2.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/arm64/abi/tpidr2.c b/tools/testing/selftests/arm64/abi/tpidr2.c
index f58a9f89b952c42c5393b93a2db4fefe3f335e5a..3b520b7efa49e0058616c04fcdc0222bd8b03d8a 100644
--- a/tools/testing/selftests/arm64/abi/tpidr2.c
+++ b/tools/testing/selftests/arm64/abi/tpidr2.c
@@ -182,16 +182,16 @@ static int write_clone_read(void)
 	}
 
 	for (;;) {
-		waiting = wait4(ret, &status, __WCLONE, NULL);
+		waiting = waitpid(ret, &status, __WCLONE);
 
 		if (waiting < 0) {
 			if (errno == EINTR)
 				continue;
-			ksft_print_msg("wait4() failed: %d\n", errno);
+			ksft_print_msg("waitpid() failed: %d\n", errno);
 			return 0;
 		}
 		if (waiting != ret) {
-			ksft_print_msg("wait4() returned wrong PID %d\n",
+			ksft_print_msg("waitpid() returned wrong PID %d\n",
 				       waiting);
 			return 0;
 		}

-- 
2.50.1