linux-kernel - [PATCH v5 4/6] selftests: futex: Add support for 32-bit systems with 64-bit time

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Message-Id: <20211209235857.423773-4-alistair.francis@opensource.wdc.com>
Date:   Fri, 10 Dec 2021 09:58:55 +1000
From:   Alistair Francis <alistair.francis@...nsource.wdc.com>
To:     linux-kernel@...r.kernel.org
Cc:     dave@...olabs.net, dvhart@...radead.org, arnd@...db.de,
        alistair23@...il.com, namhyung@...nel.org, acme@...nel.org,
        jolsa@...hat.com, linux-perf-users@...r.kernel.org,
        alexander.shishkin@...ux.intel.com, mark.rutland@....com,
        mingo@...hat.com, peterz@...radead.org, tglx@...utronix.de,
        Alistair Francis <alistair.francis@....com>
Subject: [PATCH v5 4/6] selftests: futex: Add support for 32-bit systems with 64-bit time_t

From: Alistair Francis <alistair.francis@....com>

Using the new __kernel_futex_syscall*() functions let's add support for
32-bit systems with a 64-bit time_t. We can just direclty call the
publically exposed __kernel_futex_syscall_timeout() and
__kernel_futex_syscall_nr_requeue() functions to do this.

Signed-off-by: Alistair Francis <alistair.francis@....com>
---
 tools/testing/selftests/futex/functional/futex_requeue_pi.c | 2 +-
 tools/testing/selftests/futex/include/futextest.h           | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/futex/functional/futex_requeue_pi.c b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
index 1ee5518ee6b7..556bf3e74755 100644
--- a/tools/testing/selftests/futex/functional/futex_requeue_pi.c
+++ b/tools/testing/selftests/futex/functional/futex_requeue_pi.c
@@ -294,7 +294,7 @@ int unit_test(int broadcast, long lock, int third_party_owner, long timeout_ns)
 		secs = (ts.tv_nsec + timeout_ns) / 1000000000;
 		ts.tv_nsec = ((int64_t)ts.tv_nsec + timeout_ns) % 1000000000;
 		ts.tv_sec += secs;
-		info("ts.tv_sec  = %ld\n", ts.tv_sec);
+		info("ts.tv_sec  = %lld\n", (long long) ts.tv_sec);
 		info("ts.tv_nsec = %ld\n", ts.tv_nsec);
 		tsp = &ts;
 	}
diff --git a/tools/testing/selftests/futex/include/futextest.h b/tools/testing/selftests/futex/include/futextest.h
index c786fffecb8a..1686f94667b1 100644
--- a/tools/testing/selftests/futex/include/futextest.h
+++ b/tools/testing/selftests/futex/include/futextest.h
@@ -21,6 +21,7 @@
 #include <sys/syscall.h>
 #include <sys/types.h>
 #include <linux/futex.h>
+#include <linux/futex_syscall.h>
 
 typedef volatile u_int32_t futex_t;
 #define FUTEX_INITIALIZER 0
@@ -69,14 +70,14 @@ static inline int
 futex_syscall(volatile u_int32_t *uaddr, int op, u_int32_t val, struct timespec *timeout,
 	      volatile u_int32_t *uaddr2, int val3, int opflags)
 {
-	return syscall(SYS_futex, uaddr, op | opflags, val, timeout, uaddr2, val3);
+	return __kernel_futex_syscall_timeout(uaddr, op | opflags, val, timeout, uaddr2, val3);
 }
 
 static inline int
 futex_syscall_nr_requeue(volatile u_int32_t *uaddr, int op, u_int32_t val, int nr_requeue,
 			 volatile u_int32_t *uaddr2, int val3, int opflags)
 {
-	return syscall(SYS_futex, uaddr, op | opflags, val, nr_requeue, uaddr2, val3);
+	return __kernel_futex_syscall_nr_requeue(uaddr, op | opflags, val, nr_requeue, uaddr2, val3);
 }
 
 /**
-- 
2.31.1