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 07/10] locking/x86: Wire up local_try_cmpxchg
Date:   Sun,  5 Mar 2023 21:56:25 +0100
Message-Id: <20230305205628.27385-8-ubizjak@gmail.com>
In-Reply-To: <20230305205628.27385-1-ubizjak@gmail.com>
References: <20230305205628.27385-1-ubizjak@gmail.com>
MIME-Version: 1.0
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Implement target specific support for local_try_cmpxchg.

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/local.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h
index 349a47acaa4a..4bcc72906524 100644
--- a/arch/x86/include/asm/local.h
+++ b/arch/x86/include/asm/local.h
@@ -122,6 +122,8 @@ static inline long local_sub_return(long i, local_t *l)
 
 #define local_cmpxchg(l, o, n) \
 	(cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_try_cmpxchg(l, po, n) \
+	(try_cmpxchg_local(&((l)->a.counter), (po), (n)))
 /* Always has a lock prefix */
 #define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
 
-- 
2.39.2