From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Shuah Khan <shuah@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH v2 1/4] kselftest/arm64: Always encourage preemption for za-test
Date: Mon, 29 Aug 2022 16:44:49 +0100 [thread overview]
Message-ID: <20220829154452.824870-2-broonie@kernel.org> (raw)
In-Reply-To: <20220829154452.824870-1-broonie@kernel.org>
Since we now have an explicit test for the syscall ABI there is no need for
za-test to cover getpid() so just unconditionally do sched_yield() like we
do in fpsimd-test.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
tools/testing/selftests/arm64/fp/za-test.S | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S
index 9ab6f9cd9623..2dd358f9edf2 100644
--- a/tools/testing/selftests/arm64/fp/za-test.S
+++ b/tools/testing/selftests/arm64/fp/za-test.S
@@ -287,12 +287,7 @@ _start:
subs x21, x21, #1
b.ne 0b
- and x8, x22, #127 // Every 128 interations...
- cbz x8, 0f
- mov x8, #__NR_getpid // (otherwise minimal syscall)
- b 1f
-0:
- mov x8, #__NR_sched_yield // ...encourage preemption
+ mov x8, #__NR_sched_yield // encourage preemption
1:
svc #0
--
2.30.2
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next prev parent reply other threads:[~2022-08-29 15:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 15:44 [PATCH v2 0/4] kselftest/arm64: Floating point stress test harness Mark Brown
2022-08-29 15:44 ` Mark Brown [this message]
2022-08-29 15:44 ` [PATCH v2 2/4] kselftest/arm64: Count SIGUSR2 deliveries in FP stress tests Mark Brown
2022-08-29 15:44 ` [PATCH v2 3/4] kselftest/arm64: Install signal handlers before output " Mark Brown
2022-08-29 15:44 ` [PATCH v2 4/4] kselftest/arm64: kselftest harness for " Mark Brown
2022-09-06 17:45 ` [PATCH v2 0/4] kselftest/arm64: Floating point stress test harness Catalin Marinas
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