diff mbox series

[RFC,v3,6/6] riscv/cmpxchg: Deduplicate arch_xchg() macros

Message ID 20230404163741.2762165-7-leobras@redhat.com
State New
Headers
Series Deduplicating RISCV cmpxchg.h macros |

Commit Message

Leonardo Bras Soares Passos April 4, 2023, 4:37 p.m. UTC 
  Every arch_xchg define (_relaxed, _acquire, _release, vanilla) contain it's
own define for creating tmp variables and calling the correct internal
macro for the desired version.

Those defines are mostly the same code, so there is no need to keep the 4
copies.

Create a helper define to avoid code duplication.

(This did not cause any change in generated asm)

Signed-off-by: Leonardo Bras <leobras@redhat.com>
---
 arch/riscv/include/asm/cmpxchg.h | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
index 480234719b78c..905a888d8b04d 100644
--- a/arch/riscv/include/asm/cmpxchg.h
+++ b/arch/riscv/include/asm/cmpxchg.h
@@ -45,41 +45,33 @@ 
 #define __xchg_relaxed(ptr, new, size)					\
 	___xchg(ptr, new, size, "", "", "")
 
-#define arch_xchg_relaxed(ptr, x)					\
+#define _arch_xchg(order, ptr, x)					\
 ({									\
 	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg_relaxed((ptr),			\
-					    _x_, sizeof(*(ptr)));	\
+	(__typeof__(*(ptr))) __xchg ## order((ptr),			\
+					     _x_, sizeof(*(ptr)));	\
 })
 
+#define arch_xchg_relaxed(ptr, x)					\
+	_arch_xchg(_relaxed, ptr, x)
+
 #define __xchg_acquire(ptr, new, size)					\
 	___xchg(ptr, new, size, "", "", RISCV_ACQUIRE_BARRIER)
 
 #define arch_xchg_acquire(ptr, x)					\
-({									\
-	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg_acquire((ptr),			\
-					    _x_, sizeof(*(ptr)));	\
-})
+	_arch_xchg(_acquire, ptr, x)
 
 #define __xchg_release(ptr, new, size)					\
 	___xchg(ptr, new, size, "", RISCV_RELEASE_BARRIER, "")
 
 #define arch_xchg_release(ptr, x)					\
-({									\
-	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg_release((ptr),			\
-					    _x_, sizeof(*(ptr)));	\
-})
+	_arch_xchg(_release, ptr, x)
 
 #define __xchg(ptr, new, size)						\
 	___xchg(ptr, new, size, ".aqrl", "", "")
 
 #define arch_xchg(ptr, x)						\
-({									\
-	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg((ptr), _x_, sizeof(*(ptr)));	\
-})
+	_arch_xchg(, ptr, x)
 
 #define xchg32(ptr, x)							\
 ({									\