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From: Leonardo Bras <leobras@redhat.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Leonardo Bras <leobras@redhat.com>, Guo Ren <guoren@kernel.org>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RESEND RFC PATCH v2 3/6] riscv/cmpxchg: Deduplicate arch_cmpxchg() macros
Date: Tue, 21 Mar 2023 04:42:46 -0300	[thread overview]
Message-ID: <20230321074249.2221674-4-leobras@redhat.com> (raw)
In-Reply-To: <20230321074249.2221674-1-leobras@redhat.com>

Every arch_cmpxchg 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 | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
index c7a13eec4dbcc..e49a2edc6f36c 100644
--- a/arch/riscv/include/asm/cmpxchg.h
+++ b/arch/riscv/include/asm/cmpxchg.h
@@ -202,46 +202,35 @@
 #define __cmpxchg_relaxed(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", "", "")
 
-#define arch_cmpxchg_relaxed(ptr, o, n)					\
+#define _arch_cmpxchg(order, ptr, o, n)					\
 ({									\
 	__typeof__(*(ptr)) _o_ = (o);					\
 	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_relaxed((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
+	(__typeof__(*(ptr))) __cmpxchg ## order((ptr),			\
+							_o_, _n_,	\
+							sizeof(*(ptr)));\
 })
 
+#define arch_cmpxchg_relaxed(ptr, o, n)					\
+	_arch_cmpxchg(_relaxed, ptr, o, n)
+
 #define __cmpxchg_acquire(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", "", RISCV_ACQUIRE_BARRIER)
 
 #define arch_cmpxchg_acquire(ptr, o, n)					\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_acquire((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(_acquire, ptr, o, n)
 
 #define __cmpxchg_release(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", RISCV_RELEASE_BARRIER, "")
 
 #define arch_cmpxchg_release(ptr, o, n)					\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_release((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(_release, ptr, o, n)
 
 #define __cmpxchg(ptr, old, new, size)					\
 	___cmpxchg(ptr, old, new, size, ".rl", "", "	fence rw, rw\n")
 
 #define arch_cmpxchg(ptr, o, n)						\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg((ptr),				\
-				       _o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(, ptr, o, n)
 
 #define arch_cmpxchg_local(ptr, o, n)					\
 	(__cmpxchg_relaxed((ptr), (o), (n), sizeof(*(ptr))))
-- 
2.40.0


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WARNING: multiple messages have this Message-ID (diff)
From: Leonardo Bras <leobras@redhat.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Leonardo Bras <leobras@redhat.com>, Guo Ren <guoren@kernel.org>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RESEND RFC PATCH v2 3/6] riscv/cmpxchg: Deduplicate arch_cmpxchg() macros
Date: Tue, 21 Mar 2023 04:42:46 -0300	[thread overview]
Message-ID: <20230321074249.2221674-4-leobras@redhat.com> (raw)
In-Reply-To: <20230321074249.2221674-1-leobras@redhat.com>

Every arch_cmpxchg 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 | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
index c7a13eec4dbcc..e49a2edc6f36c 100644
--- a/arch/riscv/include/asm/cmpxchg.h
+++ b/arch/riscv/include/asm/cmpxchg.h
@@ -202,46 +202,35 @@
 #define __cmpxchg_relaxed(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", "", "")
 
-#define arch_cmpxchg_relaxed(ptr, o, n)					\
+#define _arch_cmpxchg(order, ptr, o, n)					\
 ({									\
 	__typeof__(*(ptr)) _o_ = (o);					\
 	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_relaxed((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
+	(__typeof__(*(ptr))) __cmpxchg ## order((ptr),			\
+							_o_, _n_,	\
+							sizeof(*(ptr)));\
 })
 
+#define arch_cmpxchg_relaxed(ptr, o, n)					\
+	_arch_cmpxchg(_relaxed, ptr, o, n)
+
 #define __cmpxchg_acquire(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", "", RISCV_ACQUIRE_BARRIER)
 
 #define arch_cmpxchg_acquire(ptr, o, n)					\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_acquire((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(_acquire, ptr, o, n)
 
 #define __cmpxchg_release(ptr, old, new, size)				\
 	___cmpxchg(ptr, old, new, size, "", RISCV_RELEASE_BARRIER, "")
 
 #define arch_cmpxchg_release(ptr, o, n)					\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg_release((ptr),			\
-					_o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(_release, ptr, o, n)
 
 #define __cmpxchg(ptr, old, new, size)					\
 	___cmpxchg(ptr, old, new, size, ".rl", "", "	fence rw, rw\n")
 
 #define arch_cmpxchg(ptr, o, n)						\
-({									\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg((ptr),				\
-				       _o_, _n_, sizeof(*(ptr)));	\
-})
+	_arch_cmpxchg(, ptr, o, n)
 
 #define arch_cmpxchg_local(ptr, o, n)					\
 	(__cmpxchg_relaxed((ptr), (o), (n), sizeof(*(ptr))))
-- 
2.40.0


  parent reply	other threads:[~2023-03-21  7:43 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-21  7:42 [RESEND RFC PATCH v2 0/6] Deduplicating RISCV cmpxchg.h macros Leonardo Bras
2023-03-21  7:42 ` Leonardo Bras
2023-03-21  7:42 ` [RESEND RFC PATCH v2 1/6] riscv/cmpxchg: Deduplicate cmpxchg() asm functions Leonardo Bras
2023-03-21  7:42   ` Leonardo Bras
2023-03-22  0:45   ` Andrea Parri
2023-03-22  0:45     ` Andrea Parri
2023-03-22  3:50     ` Leonardo Bras Soares Passos
2023-03-22  3:50       ` Leonardo Bras Soares Passos
2023-03-22  7:50       ` Andrea Parri
2023-03-22  7:50         ` Andrea Parri
2023-03-21  7:42 ` [RESEND RFC PATCH v2 2/6] riscv/cmpxchg: Deduplicate cmpxchg() macros Leonardo Bras
2023-03-21  7:42   ` Leonardo Bras
2023-03-21  7:42 ` Leonardo Bras [this message]
2023-03-21  7:42   ` [RESEND RFC PATCH v2 3/6] riscv/cmpxchg: Deduplicate arch_cmpxchg() macros Leonardo Bras
2023-03-21  7:42 ` [RESEND RFC PATCH v2 4/6] riscv/cmpxchg: Deduplicate xchg() asm functions Leonardo Bras
2023-03-21  7:42   ` Leonardo Bras
2023-03-21  7:42 ` [RESEND RFC PATCH v2 5/6] riscv/cmpxchg: Deduplicate xchg() macros Leonardo Bras
2023-03-21  7:42   ` Leonardo Bras
2023-03-21  7:42 ` [RESEND RFC PATCH v2 6/6] riscv/cmpxchg: Deduplicate arch_xchg() macros Leonardo Bras
2023-03-21  7:42   ` Leonardo Bras

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