linux-kernel - [tip: locking/core] locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in PV_UNLOCK

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Date: Wed, 24 Apr 2024 10:04:25 -0000
From: "tip-bot2 for Uros Bizjak" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>, Ingo Molnar <mingo@...nel.org>,
 Boqun Feng <boqun.feng@...il.com>, Waiman Long <longman@...hat.com>,
 Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: locking/core] locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in
 PV_UNLOCK_ASM macro

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     532453e7aa78f3962fb4d86caf40ff81ebf62160
Gitweb:        https://git.kernel.org/tip/532453e7aa78f3962fb4d86caf40ff81ebf62160
Author:        Uros Bizjak <ubizjak@...il.com>
AuthorDate:    Mon, 22 Apr 2024 17:17:35 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Wed, 24 Apr 2024 11:48:08 +02:00

locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in PV_UNLOCK_ASM macro

Use _Q_LOCKED_VAL instead of hardcoded $0x1 in PV_UNLOCK_ASM macro.

No functional changes intended.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Boqun Feng <boqun.feng@...il.com>
Cc: Waiman Long <longman@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: https://lore.kernel.org/r/20240422151752.53997-1-ubizjak@gmail.com
---
 arch/x86/include/asm/qspinlock_paravirt.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/qspinlock_paravirt.h b/arch/x86/include/asm/qspinlock_paravirt.h
index 466af57..0a98578 100644
--- a/arch/x86/include/asm/qspinlock_paravirt.h
+++ b/arch/x86/include/asm/qspinlock_paravirt.h
@@ -40,7 +40,7 @@ __PV_CALLEE_SAVE_REGS_THUNK(__pv_queued_spin_unlock_slowpath, ".spinlock.text");
 #define PV_UNLOCK_ASM							\
 	FRAME_BEGIN							\
 	"push  %rdx\n\t"						\
-	"mov   $0x1,%eax\n\t"						\
+	"mov   $" __stringify(_Q_LOCKED_VAL) ",%eax\n\t"		\
 	"xor   %edx,%edx\n\t"						\
 	LOCK_PREFIX "cmpxchg %dl,(%rdi)\n\t"				\
 	"jne   .slowpath\n\t"						\