From: "H. Peter Anvin" <hpa@linux.intel.com>
To: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>, Borislav Petkov <bp@alien8.de>
Subject: [PATCH v2 08/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h>
Date: Wed, 8 Jun 2016 12:38:44 -0700 [thread overview]
Message-ID: <1465414726-197858-9-git-send-email-hpa@linux.intel.com> (raw)
In-Reply-To: <1465414726-197858-1-git-send-email-hpa@linux.intel.com>
From: "H. Peter Anvin" <hpa@zytor.com>
Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
<asm/rwsem.h>.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/rwsem.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index c508770..1e8be26 100644
--- a/arch/x86/include/asm/rwsem.h
+++ b/arch/x86/include/asm/rwsem.h
@@ -149,10 +149,10 @@ static inline bool __down_write_trylock(struct rw_semaphore *sem)
LOCK_PREFIX " cmpxchg %2,%0\n\t"
" jnz 1b\n\t"
"2:\n\t"
- " sete %3\n\t"
+ CC_SET(e)
"# ending __down_write_trylock\n\t"
: "+m" (sem->count), "=&a" (tmp0), "=&r" (tmp1),
- "=qm" (result)
+ CC_OUT(e) (result)
: "er" (RWSEM_ACTIVE_WRITE_BIAS)
: "memory", "cc");
return result;
--
2.7.3.0.11.gd79db92
next prev parent reply other threads:[~2016-06-08 19:40 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 19:38 [PATCH v2 00/10] x86: use gcc 6+ asm flag output feature H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 01/10] x86, bitops: remove use of "sbb" to return CF H. Peter Anvin
2016-06-08 19:45 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 02/10] x86, asm: use bool for bitops and other assembly outputs H. Peter Anvin
2016-06-08 19:46 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 03/10] x86, asm: change the GEN_*_RMWcc() macros to not quote the condition H. Peter Anvin
2016-06-08 19:46 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 04/10] x86, asm: define CC_SET() and CC_OUT() macros H. Peter Anvin
2016-06-08 19:47 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 05/10] x86, asm: change GEN_*_RMWcc() to use CC_SET()/CC_OUT() H. Peter Anvin
2016-06-08 19:47 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 06/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/bitops.h> H. Peter Anvin
2016-06-08 19:48 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 07/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/percpu.h> H. Peter Anvin
2016-06-08 19:48 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` H. Peter Anvin [this message]
2016-06-08 19:49 ` [tip:x86/asm] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h> tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 09/10] x86, asm, boot: Use CC_SET()/CC_OUT() in arch/x86/boot/boot.h H. Peter Anvin
2016-06-08 19:49 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-08 19:38 ` [PATCH v2 10/10] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h H. Peter Anvin
2016-06-08 19:49 ` [tip:x86/asm] " tip-bot for H. Peter Anvin
2016-06-09 15:49 ` [PATCH v2 10/10] " Borislav Petkov
2016-06-08 21:30 ` [PATCH v2 00/10] x86: use gcc 6+ asm flag output feature H. Peter Anvin
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