From 8c2943f057c5f69cc6423c360b626bc1ad493230 Mon Sep 17 00:00:00 2001
From: Andre McCurdy <armccurdy@gmail.com>
Date: Wed, 18 Apr 2018 18:51:44 -0700
Subject: [PATCH] arm: use a_ll/a_sc atomics when building for ARMv6T2
ARMv6 cores with support for Thumb2 can take advantage of the "ldrex"
and "strex" based implementations of a_ll and a_sc.
---
arch/arm/atomic_arch.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/atomic_arch.h b/arch/arm/atomic_arch.h
index 5ff1be1b..62458b45 100644
--- a/arch/arm/atomic_arch.h
+++ b/arch/arm/atomic_arch.h
@@ -8,7 +8,7 @@ extern uintptr_t __attribute__((__visibility__("hidden")))
__a_cas_ptr, __a_barrier_ptr;
#if ((__ARM_ARCH_6__ || __ARM_ARCH_6K__ || __ARM_ARCH_6KZ__ || __ARM_ARCH_6ZK__) && !__thumb__) \
- || __ARM_ARCH_7A__ || __ARM_ARCH_7R__ || __ARM_ARCH >= 7
+ || __ARM_ARCH_6T2__ || __ARM_ARCH_7A__ || __ARM_ARCH_7R__ || __ARM_ARCH >= 7
#define a_ll a_ll
static inline int a_ll(volatile int *p)
--
2.40.0