[PATCH 09/10] locking/x86: Enable local{,64}_try_cmpxchg

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From: Uros Bizjak <ubizjak@gmail.com>
To: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org,
	loongarch@lists.linux.dev, linux-mips@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org,
	linux-perf-users@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 09/10] locking/x86: Enable local{,64}_try_cmpxchg
Date: Sun,  5 Mar 2023 21:56:27 +0100	[thread overview]
Message-ID: <20230305205628.27385-10-ubizjak@gmail.com> (raw)
In-Reply-To: <20230305205628.27385-1-ubizjak@gmail.com>

Enable local_try_cmpxchg and also local64_try_cmpxchg for x86_64.

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..e8f939e8432e 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, linux-kernel@vger.kernel.org,
	loongarch@lists.linux.dev, linux-mips@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-arch@vger.kernel.org,
	linux-perf-users@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 09/10] locking/x86: Enable local{,64}_try_cmpxchg
Date: Sun,  5 Mar 2023 21:56:27 +0100	[thread overview]
Message-ID: <20230305205628.27385-10-ubizjak@gmail.com> (raw)
In-Reply-To: <20230305205628.27385-1-ubizjak@gmail.com>

Enable local_try_cmpxchg and also local64_try_cmpxchg for x86_64.

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..e8f939e8432e 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

next prev parent reply	other threads:[~2023-03-05 20:56 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-05 20:56 [PATCH 00/10] locking: Introduce local{,64}_try_cmpxchg Uros Bizjak
2023-03-05 20:56 ` Uros Bizjak
2023-03-05 20:56 ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 01/10] locking/atomic: Add missing cast to try_cmpxchg() fallbacks Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-24 14:13   ` Mark Rutland
2023-03-24 14:13     ` Mark Rutland
2023-03-24 15:43     ` Uros Bizjak
2023-03-24 15:43       ` Uros Bizjak
2023-03-24 15:43       ` Uros Bizjak
2023-03-24 16:14       ` Mark Rutland
2023-03-24 16:14         ` Mark Rutland
2023-03-24 16:14         ` Mark Rutland
2023-03-24 16:32         ` Mark Rutland
2023-03-24 16:32           ` Mark Rutland
2023-03-24 16:32           ` Mark Rutland
2023-03-26 19:28           ` Uros Bizjak
2023-03-26 19:28             ` Uros Bizjak
2023-04-03 10:19             ` Mark Rutland
2023-04-03 10:19               ` Mark Rutland
2023-04-04 12:24               ` Uros Bizjak
2023-04-04 12:24                 ` Uros Bizjak
2023-04-04 13:19                 ` Mark Rutland
2023-04-04 13:19                   ` Mark Rutland
2023-04-04 13:23                   ` Uros Bizjak
2023-04-04 13:23                     ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 02/10] locking/atomic: Add generic try_cmpxchg{,64}_local support Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 03/10] locking/alpha: Wire up local_try_cmpxchg Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 04/10] locking/loongarch: " Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 05/10] locking/mips: " Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 06/10] locking/powerpc: " Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 07/10] locking/x86: " Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak
2023-03-05 20:56 ` [PATCH 08/10] locking/generic: Wire up local{,64}_try_cmpxchg Uros Bizjak
2023-03-05 20:56 ` Uros Bizjak [this message]
2023-03-05 20:56   ` [PATCH 09/10] locking/x86: Enable local{,64}_try_cmpxchg Uros Bizjak
2023-03-05 20:56 ` [PATCH 10/10] perf/ring_buffer: use local_try_cmpxchg in __perf_output_begin Uros Bizjak
2023-03-05 20:56   ` Uros Bizjak

find likely ancestor, descendant, or conflicting patches for this message:
( dfblob:94fbe6ae743 dfblob:e8f939e8432 dfblob:94fbe6ae743
dfblob:e8f939e8432 )
 OR (
bs:"[PATCH 09/10] locking/x86: Enable local{,64}_try_cmpxchg" )
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