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From: Uros Bizjak <ubizjak@gmail.com>
To: linux-alpha@vger.kernel.org, loongarch@lists.linux.dev,
	linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	x86@kernel.org, linux-arch@vger.kernel.org,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Uros Bizjak <ubizjak@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH v2 4/5] locking/x86: Define arch_try_cmpxchg_local
Date: Wed,  5 Apr 2023 16:17:09 +0200	[thread overview]
Message-ID: <20230405141710.3551-5-ubizjak@gmail.com> (raw)
In-Reply-To: <20230405141710.3551-1-ubizjak@gmail.com>

Define target specific arch_try_cmpxchg_local. This
definition overrides the generic arch_try_cmpxchg_local
fallback definition and enables target-specific
implementation of try_cmpxchg_local.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
 arch/x86/include/asm/cmpxchg.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
index 94fbe6ae7431..540573f515b7 100644
--- a/arch/x86/include/asm/cmpxchg.h
+++ b/arch/x86/include/asm/cmpxchg.h
@@ -221,9 +221,15 @@ extern void __add_wrong_size(void)
 #define __try_cmpxchg(ptr, pold, new, size)				\
 	__raw_try_cmpxchg((ptr), (pold), (new), (size), LOCK_PREFIX)
 
+#define __try_cmpxchg_local(ptr, pold, new, size)			\
+	__raw_try_cmpxchg((ptr), (pold), (new), (size), "")
+
 #define arch_try_cmpxchg(ptr, pold, new) 				\
 	__try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr)))
 
+#define arch_try_cmpxchg_local(ptr, pold, new)				\
+	__try_cmpxchg_local((ptr), (pold), (new), sizeof(*(ptr)))
+
 /*
  * xadd() adds "inc" to "*ptr" and atomically returns the previous
  * value of "*ptr".
-- 
2.39.2


WARNING: multiple messages have this Message-ID (diff)
From: Uros Bizjak <ubizjak@gmail.com>
To: linux-alpha@vger.kernel.org, loongarch@lists.linux.dev,
	linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	x86@kernel.org, linux-arch@vger.kernel.org,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	Uros Bizjak <ubizjak@gmail.com>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH v2 4/5] locking/x86: Define arch_try_cmpxchg_local
Date: Wed,  5 Apr 2023 16:17:09 +0200	[thread overview]
Message-ID: <20230405141710.3551-5-ubizjak@gmail.com> (raw)
In-Reply-To: <20230405141710.3551-1-ubizjak@gmail.com>

Define target specific arch_try_cmpxchg_local. This
definition overrides the generic arch_try_cmpxchg_local
fallback definition and enables target-specific
implementation of try_cmpxchg_local.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
---
 arch/x86/include/asm/cmpxchg.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
index 94fbe6ae7431..540573f515b7 100644
--- a/arch/x86/include/asm/cmpxchg.h
+++ b/arch/x86/include/asm/cmpxchg.h
@@ -221,9 +221,15 @@ extern void __add_wrong_size(void)
 #define __try_cmpxchg(ptr, pold, new, size)				\
 	__raw_try_cmpxchg((ptr), (pold), (new), (size), LOCK_PREFIX)
 
+#define __try_cmpxchg_local(ptr, pold, new, size)			\
+	__raw_try_cmpxchg((ptr), (pold), (new), (size), "")
+
 #define arch_try_cmpxchg(ptr, pold, new) 				\
 	__try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr)))
 
+#define arch_try_cmpxchg_local(ptr, pold, new)				\
+	__try_cmpxchg_local((ptr), (pold), (new), sizeof(*(ptr)))
+
 /*
  * xadd() adds "inc" to "*ptr" and atomically returns the previous
  * value of "*ptr".
-- 
2.39.2


  parent reply	other threads:[~2023-04-05 14:17 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-05 14:17 [PATCH v2 0/5] locking: Introduce local{,64}_try_cmpxchg Uros Bizjak
2023-04-05 14:17 ` Uros Bizjak
2023-04-05 14:17 ` Uros Bizjak
2023-04-05 14:17 ` [PATCH v2 1/5] locking/atomic: Add generic try_cmpxchg{,64}_local support Uros Bizjak
2023-04-05 14:17   ` Uros Bizjak
2023-04-11 11:10   ` Mark Rutland
2023-04-11 11:10     ` Mark Rutland
2023-04-13 11:38   ` [tip: locking/core] " tip-bot2 for Uros Bizjak
2023-04-29  7:03   ` [tip: locking/core] locking/atomic: Add generic try_cmpxchg{,64}_local() support tip-bot2 for Uros Bizjak
2023-04-29  7:18   ` tip-bot2 for Uros Bizjak
2023-04-05 14:17 ` [PATCH v2 2/5] locking/generic: Wire up local{,64}_try_cmpxchg Uros Bizjak
2023-04-11 11:13   ` Mark Rutland
2023-04-11 11:13     ` Mark Rutland
2023-04-13 11:38   ` [tip: locking/core] " tip-bot2 for Uros Bizjak
2023-04-29  7:03   ` [tip: locking/core] locking/generic: Wire up local{,64}_try_cmpxchg() tip-bot2 for Uros Bizjak
2023-04-29  7:18   ` tip-bot2 for Uros Bizjak
2023-04-05 14:17 ` [PATCH v2 3/5] locking/arch: Wire up local_try_cmpxchg Uros Bizjak
2023-04-05 14:17   ` Uros Bizjak
2023-04-12 11:32   ` Peter Zijlstra
2023-04-12 11:32     ` Peter Zijlstra
2023-04-12 13:37     ` Uros Bizjak
2023-04-12 13:37       ` Uros Bizjak
2023-04-12 13:37       ` Uros Bizjak
2023-04-12 13:40       ` Peter Zijlstra
2023-04-12 13:40         ` Peter Zijlstra
2023-04-12 13:40         ` Peter Zijlstra
2023-04-13 11:38   ` [tip: locking/core] " tip-bot2 for Uros Bizjak
2023-04-29  7:03   ` [tip: locking/core] locking/arch: Wire up local_try_cmpxchg() tip-bot2 for Uros Bizjak
2023-04-29  7:18   ` tip-bot2 for Uros Bizjak
2023-05-17  7:41   ` [PATCH v2 3/5] locking/arch: Wire up local_try_cmpxchg Charlemagne Lasse
2023-05-17  7:41     ` Charlemagne Lasse
2023-05-17  7:41     ` Charlemagne Lasse
2023-04-05 14:17 ` Uros Bizjak [this message]
2023-04-05 14:17   ` [PATCH v2 4/5] locking/x86: Define arch_try_cmpxchg_local Uros Bizjak
2023-04-13 11:38   ` [tip: locking/core] " tip-bot2 for Uros Bizjak
2023-04-29  7:03   ` [tip: locking/core] locking/x86: Define arch_try_cmpxchg_local() tip-bot2 for Uros Bizjak
2023-04-29  7:18   ` tip-bot2 for Uros Bizjak
2023-04-05 14:17 ` [PATCH v2 5/5] events: Illustrate the transition to local{,64}_try_cmpxchg Uros Bizjak
2023-04-05 16:37 ` [PATCH v2 0/5] locking: Introduce local{,64}_try_cmpxchg Dave Hansen
2023-04-05 16:37   ` Dave Hansen
2023-04-05 16:37   ` Dave Hansen
2023-04-05 18:53   ` Uros Bizjak
2023-04-05 18:53     ` Uros Bizjak
2023-04-05 18:53     ` Uros Bizjak
2023-04-06  8:25   ` David Laight
2023-04-06  8:25     ` David Laight
2023-04-06  8:25     ` David Laight
2023-04-06  8:38     ` Uros Bizjak
2023-04-06  8:38       ` Uros Bizjak
2023-04-06  8:38       ` Uros Bizjak
2023-04-06  9:01       ` David Laight
2023-04-06  9:01         ` David Laight
2023-04-06  9:01         ` David Laight
2023-04-11 11:35   ` Mark Rutland
2023-04-11 11:35     ` Mark Rutland
2023-04-11 11:35     ` Mark Rutland
2023-04-11 13:43     ` Dave Hansen
2023-04-11 13:43       ` Dave Hansen
2023-04-11 13:43       ` Dave Hansen
2023-04-11 21:34       ` David Laight
2023-04-11 21:34         ` David Laight
2023-04-11 21:34         ` David Laight

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