linux-kernel - [PATCH RFT v7 5/9] selftests/clone3: Remove redundant flushes of output streams

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Message-Id: <20240731-clone3-shadow-stack-v7-5-a9532eebfb1d@kernel.org>
Date: Wed, 31 Jul 2024 13:14:11 +0100
From: Mark Brown <broonie@...nel.org>
To: "Rick P. Edgecombe" <rick.p.edgecombe@...el.com>, 
 Deepak Gupta <debug@...osinc.com>, Szabolcs Nagy <Szabolcs.Nagy@....com>, 
 "H.J. Lu" <hjl.tools@...il.com>, Florian Weimer <fweimer@...hat.com>, 
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, 
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, 
 x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, 
 Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>, 
 Vincent Guittot <vincent.guittot@...aro.org>, 
 Dietmar Eggemann <dietmar.eggemann@....com>, 
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, 
 Mel Gorman <mgorman@...e.de>, 
 Daniel Bristot de Oliveira <bristot@...hat.com>, 
 Valentin Schneider <vschneid@...hat.com>, 
 Christian Brauner <brauner@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>, 
 Will Deacon <will@...nel.org>, jannh@...gle.com, bsegall@...gle.com, 
 linux-kselftest@...r.kernel.org, linux-api@...r.kernel.org, 
 Mark Brown <broonie@...nel.org>, Kees Cook <kees@...nel.org>
Subject: [PATCH RFT v7 5/9] selftests/clone3: Remove redundant flushes of
 output streams

Since there were widespread issues with output not being flushed the
kselftest framework was modified to explicitly set the output streams
unbuffered in commit 58e2847ad2e6 ("selftests: line buffer test
program's stdout") so there is no need to explicitly flush in the clone3
tests.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 tools/testing/selftests/clone3/clone3_selftests.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/testing/selftests/clone3/clone3_selftests.h b/tools/testing/selftests/clone3/clone3_selftests.h
index 3d2663fe50ba..39b5dcba663c 100644
--- a/tools/testing/selftests/clone3/clone3_selftests.h
+++ b/tools/testing/selftests/clone3/clone3_selftests.h
@@ -35,8 +35,6 @@ struct __clone_args {

 static pid_t sys_clone3(struct __clone_args *args, size_t size)
 {
-	fflush(stdout);
-	fflush(stderr);
 	return syscall(__NR_clone3, args, size);
 }

-- 
2.39.2