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From:   Andrzej Hajda <andrzej.hajda@intel.com>
To:     linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-snps-arc@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org,
        linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org,
        loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org,
        linux-mips@vger.kernel.org, openrisc@lists.librecores.org,
        linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
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        linux-xtensa@linux-xtensa.org, intel-gfx@lists.freedesktop.org,
        dri-devel@lists.freedesktop.org
Cc:     Andrzej Hajda <andrzej.hajda@intel.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Heiko Carstens <hca@linux.ibm.com>
Subject: [PATCH v4] arch: rename all internal names __xchg to __arch_xchg
Date:   Thu,  5 Jan 2023 10:54:26 +0100
Message-Id: <20230105095426.2163354-1-andrzej.hajda@intel.com>
In-Reply-To: <Y7P9IcR7/jgYWMcq@osiris>
References: <Y7P9IcR7/jgYWMcq@osiris>
MIME-Version: 1.0
Organization: Intel Technology Poland sp. z o.o. - ul. Slowackiego 173, 80-298 Gdansk - KRS 101882 - NIP 957-07-52-316
Content-Transfer-Encoding: 8bit
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__xchg will be used for non-atomic xchg macro.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
---
v2: squashed all arch patches into one
v3: fixed alpha/xchg_local, thx to lkp@intel.com
v4: adjusted indentation (Heiko)
---
 arch/alpha/include/asm/cmpxchg.h     | 10 +++++-----
 arch/arc/include/asm/cmpxchg.h       |  4 ++--
 arch/arm/include/asm/cmpxchg.h       |  7 ++++---
 arch/arm64/include/asm/cmpxchg.h     |  7 +++----
 arch/hexagon/include/asm/cmpxchg.h   | 10 +++++-----
 arch/ia64/include/asm/cmpxchg.h      |  2 +-
 arch/ia64/include/uapi/asm/cmpxchg.h |  4 ++--
 arch/loongarch/include/asm/cmpxchg.h |  4 ++--
 arch/m68k/include/asm/cmpxchg.h      |  6 +++---
 arch/mips/include/asm/cmpxchg.h      |  4 ++--
 arch/openrisc/include/asm/cmpxchg.h  | 10 +++++-----
 arch/parisc/include/asm/cmpxchg.h    |  4 ++--
 arch/powerpc/include/asm/cmpxchg.h   |  4 ++--
 arch/riscv/include/asm/atomic.h      |  2 +-
 arch/riscv/include/asm/cmpxchg.h     |  4 ++--
 arch/s390/include/asm/cmpxchg.h      |  8 ++++----
 arch/sh/include/asm/cmpxchg.h        |  4 ++--
 arch/sparc/include/asm/cmpxchg_32.h  |  4 ++--
 arch/sparc/include/asm/cmpxchg_64.h  |  6 +++---
 arch/xtensa/include/asm/cmpxchg.h    |  4 ++--
 20 files changed, 54 insertions(+), 54 deletions(-)

diff --git a/arch/alpha/include/asm/cmpxchg.h b/arch/alpha/include/asm/cmpxchg.h
index 6e0a850aa9d38c..91d4a4d9258cd2 100644
--- a/arch/alpha/include/asm/cmpxchg.h
+++ b/arch/alpha/include/asm/cmpxchg.h
@@ -6,15 +6,15 @@
  * Atomic exchange routines.
  */
 
-#define ____xchg(type, args...)		__xchg ## type ## _local(args)
+#define ____xchg(type, args...)		__arch_xchg ## type ## _local(args)
 #define ____cmpxchg(type, args...)	__cmpxchg ## type ## _local(args)
 #include <asm/xchg.h>
 
 #define xchg_local(ptr, x)						\
 ({									\
 	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg_local((ptr), (unsigned long)_x_,	\
-				       sizeof(*(ptr)));			\
+	(__typeof__(*(ptr))) __arch_xchg_local((ptr), (unsigned long)_x_,\
+					       sizeof(*(ptr)));		\
 })
 
 #define arch_cmpxchg_local(ptr, o, n)					\
@@ -34,7 +34,7 @@
 
 #undef ____xchg
 #undef ____cmpxchg
-#define ____xchg(type, args...)		__xchg ##type(args)
+#define ____xchg(type, args...)		__arch_xchg ##type(args)
 #define ____cmpxchg(type, args...)	__cmpxchg ##type(args)
 #include <asm/xchg.h>
 
@@ -48,7 +48,7 @@
 	__typeof__(*(ptr)) _x_ = (x);					\
 	smp_mb();							\
 	__ret = (__typeof__(*(ptr)))					\
-		__xchg((ptr), (unsigned long)_x_, sizeof(*(ptr)));	\
+		__arch_xchg((ptr), (unsigned long)_x_, sizeof(*(ptr)));	\
 	smp_mb();							\
 	__ret;								\
 })
diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h
index c5b544a5fe8106..e138fde067dea5 100644
--- a/arch/arc/include/asm/cmpxchg.h
+++ b/arch/arc/include/asm/cmpxchg.h
@@ -85,7 +85,7 @@
  */
 #ifdef CONFIG_ARC_HAS_LLSC
 
-#define __xchg(ptr, val)						\
+#define __arch_xchg(ptr, val)						\
 ({									\
 	__asm__ __volatile__(						\
 	"	ex  %0, [%1]	\n"	/* set new value */	        \
@@ -102,7 +102,7 @@
 									\
 	switch(sizeof(*(_p_))) {					\
 	case 4:								\
-		_val_ = __xchg(_p_, _val_);				\
+		_val_ = __arch_xchg(_p_, _val_);			\
 		break;							\
 	default:							\
 		BUILD_BUG();						\
diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h
index 4dfe538dfc689b..44667bdb4707a9 100644
--- a/arch/arm/include/asm/cmpxchg.h
+++ b/arch/arm/include/asm/cmpxchg.h
@@ -25,7 +25,8 @@
 #define swp_is_buggy
 #endif
 
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
+static inline unsigned long
+__arch_xchg(unsigned long x, volatile void *ptr, int size)
 {
 	extern void __bad_xchg(volatile void *, int);
 	unsigned long ret;
@@ -115,8 +116,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 }
 
 #define arch_xchg_relaxed(ptr, x) ({					\
-	(__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr),		\
-				   sizeof(*(ptr)));			\
+	(__typeof__(*(ptr)))__arch_xchg((unsigned long)(x), (ptr),	\
+					sizeof(*(ptr)));		\
 })
 
 #include <asm-generic/cmpxchg-local.h>
diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
index 497acf134d9923..c6bc5d8ec3ca41 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -62,9 +62,8 @@ __XCHG_CASE( ,  ,  mb_, 64, dmb ish, nop,  , a, l, "memory")
 #undef __XCHG_CASE
 
 #define __XCHG_GEN(sfx)							\
-static __always_inline  unsigned long __xchg##sfx(unsigned long x,	\
-					volatile void *ptr,		\
-					int size)			\
+static __always_inline unsigned long					\
+__arch_xchg##sfx(unsigned long x, volatile void *ptr, int size)		\
 {									\
 	switch (size) {							\
 	case 1:								\
@@ -93,7 +92,7 @@ __XCHG_GEN(_mb)
 ({									\
 	__typeof__(*(ptr)) __ret;					\
 	__ret = (__typeof__(*(ptr)))					\
-		__xchg##sfx((unsigned long)(x), (ptr), sizeof(*(ptr))); \
+		__arch_xchg##sfx((unsigned long)(x), (ptr), sizeof(*(ptr))); \
 	__ret;								\
 })
 
diff --git a/arch/hexagon/include/asm/cmpxchg.h b/arch/hexagon/include/asm/cmpxchg.h
index cdb705e1496af8..bf6cf5579cf459 100644
--- a/arch/hexagon/include/asm/cmpxchg.h
+++ b/arch/hexagon/include/asm/cmpxchg.h
@@ -9,7 +9,7 @@
 #define _ASM_CMPXCHG_H
 
 /*
- * __xchg - atomically exchange a register and a memory location
+ * __arch_xchg - atomically exchange a register and a memory location
  * @x: value to swap
  * @ptr: pointer to memory
  * @size:  size of the value
@@ -19,8 +19,8 @@
  * Note:  there was an errata for V2 about .new's and memw_locked.
  *
  */
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
-				   int size)
+static inline unsigned long
+__arch_xchg(unsigned long x, volatile void *ptr, int size)
 {
 	unsigned long retval;
 
@@ -42,8 +42,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
  * Atomically swap the contents of a register with memory.  Should be atomic
  * between multiple CPU's and within interrupts on the same CPU.
  */
-#define arch_xchg(ptr, v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v), (ptr), \
-	sizeof(*(ptr))))
+#define arch_xchg(ptr, v) ((__typeof__(*(ptr)))__arch_xchg((unsigned long)(v), (ptr), \
+							   sizeof(*(ptr))))
 
 /*
  *  see rt-mutex-design.txt; cmpxchg supposedly checks if *ptr == A and swaps.
diff --git a/arch/ia64/include/asm/cmpxchg.h b/arch/ia64/include/asm/cmpxchg.h
index 94ef844298431a..8b2e644ef6a14e 100644
--- a/arch/ia64/include/asm/cmpxchg.h
+++ b/arch/ia64/include/asm/cmpxchg.h
@@ -5,7 +5,7 @@
 #include <uapi/asm/cmpxchg.h>
 
 #define arch_xchg(ptr, x)	\
-({(__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr)));})
+({(__typeof__(*(ptr))) __arch_xchg((unsigned long) (x), (ptr), sizeof(*(ptr)));})
 
 #define arch_cmpxchg(ptr, o, n)		cmpxchg_acq((ptr), (o), (n))
 #define arch_cmpxchg64(ptr, o, n)	cmpxchg_acq((ptr), (o), (n))
diff --git a/arch/ia64/include/uapi/asm/cmpxchg.h b/arch/ia64/include/uapi/asm/cmpxchg.h
index ca2e0268534384..3fec9b037051bb 100644
--- a/arch/ia64/include/uapi/asm/cmpxchg.h
+++ b/arch/ia64/include/uapi/asm/cmpxchg.h
@@ -27,7 +27,7 @@
  */
 extern void ia64_xchg_called_with_bad_pointer(void);
 
-#define __xchg(x, ptr, size)						\
+#define __arch_xchg(x, ptr, size)					\
 ({									\
 	unsigned long __xchg_result;					\
 									\
@@ -55,7 +55,7 @@ extern void ia64_xchg_called_with_bad_pointer(void);
 
 #ifndef __KERNEL__
 #define xchg(ptr, x)							\
-({(__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr)));})
+({(__typeof__(*(ptr))) __arch_xchg((unsigned long) (x), (ptr), sizeof(*(ptr)));})
 #endif
 
 /*
diff --git a/arch/loongarch/include/asm/cmpxchg.h b/arch/loongarch/include/asm/cmpxchg.h
index ecfa6cf79806e6..979fde61bba8a4 100644
--- a/arch/loongarch/include/asm/cmpxchg.h
+++ b/arch/loongarch/include/asm/cmpxchg.h
@@ -62,7 +62,7 @@ static inline unsigned int __xchg_small(volatile void *ptr, unsigned int val,
 }
 
 static __always_inline unsigned long
-__xchg(volatile void *ptr, unsigned long x, int size)
+__arch_xchg(volatile void *ptr, unsigned long x, int size)
 {
 	switch (size) {
 	case 1:
@@ -87,7 +87,7 @@ __xchg(volatile void *ptr, unsigned long x, int size)
 	__typeof__(*(ptr)) __res;					\
 									\
 	__res = (__typeof__(*(ptr)))					\
-		__xchg((ptr), (unsigned long)(x), sizeof(*(ptr)));	\
+		__arch_xchg((ptr), (unsigned long)(x), sizeof(*(ptr)));	\
 									\
 	__res;								\
 })
diff --git a/arch/m68k/include/asm/cmpxchg.h b/arch/m68k/include/asm/cmpxchg.h
index 6cf464cdab067e..d7f3de9c5d6f79 100644
--- a/arch/m68k/include/asm/cmpxchg.h
+++ b/arch/m68k/include/asm/cmpxchg.h
@@ -9,7 +9,7 @@
 extern unsigned long __invalid_xchg_size(unsigned long, volatile void *, int);
 
 #ifndef CONFIG_RMW_INSNS
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+static inline unsigned long __arch_xchg(unsigned long x, volatile void * ptr, int size)
 {
 	unsigned long flags, tmp;
 
@@ -40,7 +40,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
 	return x;
 }
 #else
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+static inline unsigned long __arch_xchg(unsigned long x, volatile void * ptr, int size)
 {
 	switch (size) {
 	case 1:
@@ -75,7 +75,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
 }
 #endif
 
-#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
+#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__arch_xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
 
 #include <asm-generic/cmpxchg-local.h>
 
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index 7ec9493b28614f..feed343ad483a9 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -68,7 +68,7 @@ extern unsigned long __xchg_small(volatile void *ptr, unsigned long val,
 				  unsigned int size);
 
 static __always_inline
-unsigned long __xchg(volatile void *ptr, unsigned long x, int size)
+unsigned long __arch_xchg(volatile void *ptr, unsigned long x, int size)
 {
 	switch (size) {
 	case 1:
@@ -102,7 +102,7 @@ unsigned long __xchg(volatile void *ptr, unsigned long x, int size)
 		smp_mb__before_llsc();					\
 									\
 	__res = (__typeof__(*(ptr)))					\
-		__xchg((ptr), (unsigned long)(x), sizeof(*(ptr)));	\
+		__arch_xchg((ptr), (unsigned long)(x), sizeof(*(ptr)));	\
 									\
 	smp_llsc_mb();							\
 									\
diff --git a/arch/openrisc/include/asm/cmpxchg.h b/arch/openrisc/include/asm/cmpxchg.h
index 79fd16162ccb6d..8ee151c072e414 100644
--- a/arch/openrisc/include/asm/cmpxchg.h
+++ b/arch/openrisc/include/asm/cmpxchg.h
@@ -147,8 +147,8 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 extern unsigned long __xchg_called_with_bad_pointer(void)
 	__compiletime_error("Bad argument size for xchg");
 
-static inline unsigned long __xchg(volatile void *ptr, unsigned long with,
-		int size)
+static inline unsigned long
+__arch_xchg(volatile void *ptr, unsigned long with, int size)
 {
 	switch (size) {
 	case 1:
@@ -163,9 +163,9 @@ static inline unsigned long __xchg(volatile void *ptr, unsigned long with,
 
 #define arch_xchg(ptr, with) 						\
 	({								\
-		(__typeof__(*(ptr))) __xchg((ptr),			\
-					    (unsigned long)(with),	\
-					    sizeof(*(ptr)));		\
+		(__typeof__(*(ptr))) __arch_xchg((ptr),			\
+						 (unsigned long)(with),	\
+						 sizeof(*(ptr)));	\
 	})
 
 #endif /* __ASM_OPENRISC_CMPXCHG_H */
diff --git a/arch/parisc/include/asm/cmpxchg.h b/arch/parisc/include/asm/cmpxchg.h
index 5f274be105671e..c1d776bb16b4ed 100644
--- a/arch/parisc/include/asm/cmpxchg.h
+++ b/arch/parisc/include/asm/cmpxchg.h
@@ -22,7 +22,7 @@ extern unsigned long __xchg64(unsigned long, volatile unsigned long *);
 
 /* optimizer better get rid of switch since size is a constant */
 static inline unsigned long
-__xchg(unsigned long x, volatile void *ptr, int size)
+__arch_xchg(unsigned long x, volatile void *ptr, int size)
 {
 	switch (size) {
 #ifdef CONFIG_64BIT
@@ -49,7 +49,7 @@ __xchg(unsigned long x, volatile void *ptr, int size)
 	__typeof__(*(ptr)) __ret;					\
 	__typeof__(*(ptr)) _x_ = (x);					\
 	__ret = (__typeof__(*(ptr)))					\
-		__xchg((unsigned long)_x_, (ptr), sizeof(*(ptr)));	\
+		__arch_xchg((unsigned long)_x_, (ptr), sizeof(*(ptr)));	\
 	__ret;								\
 })
 
diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h
index d0ea0571e79ab5..dbb50c06f0bf4d 100644
--- a/arch/powerpc/include/asm/cmpxchg.h
+++ b/arch/powerpc/include/asm/cmpxchg.h
@@ -229,7 +229,7 @@ __xchg_local(void *ptr, unsigned long x, unsigned int size)
 		return __xchg_u64_local(ptr, x);
 #endif
 	}
-	BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg");
+	BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local");
 	return x;
 }
 
@@ -248,7 +248,7 @@ __xchg_relaxed(void *ptr, unsigned long x, unsigned int size)
 		return __xchg_u64_relaxed(ptr, x);
 #endif
 	}
-	BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local");
+	BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_relaxed");
 	return x;
 }
 #define arch_xchg_local(ptr,x)						     \
diff --git a/arch/riscv/include/asm/atomic.h b/arch/riscv/include/asm/atomic.h
index 0dfe9d857a762b..bba472928b5393 100644
--- a/arch/riscv/include/asm/atomic.h
+++ b/arch/riscv/include/asm/atomic.h
@@ -261,7 +261,7 @@ c_t arch_atomic##prefix##_xchg_release(atomic##prefix##_t *v, c_t n)	\
 static __always_inline							\
 c_t arch_atomic##prefix##_xchg(atomic##prefix##_t *v, c_t n)		\
 {									\
-	return __xchg(&(v->counter), n, size);				\
+	return __arch_xchg(&(v->counter), n, size);			\
 }									\
 static __always_inline							\
 c_t arch_atomic##prefix##_cmpxchg_relaxed(atomic##prefix##_t *v,	\
diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
index 12debce235e52d..2f4726d3cfcc25 100644
--- a/arch/riscv/include/asm/cmpxchg.h
+++ b/arch/riscv/include/asm/cmpxchg.h
@@ -114,7 +114,7 @@
 					    _x_, sizeof(*(ptr)));	\
 })
 
-#define __xchg(ptr, new, size)						\
+#define __arch_xchg(ptr, new, size)					\
 ({									\
 	__typeof__(ptr) __ptr = (ptr);					\
 	__typeof__(new) __new = (new);					\
@@ -143,7 +143,7 @@
 #define arch_xchg(ptr, x)						\
 ({									\
 	__typeof__(*(ptr)) _x_ = (x);					\
-	(__typeof__(*(ptr))) __xchg((ptr), _x_, sizeof(*(ptr)));	\
+	(__typeof__(*(ptr))) __arch_xchg((ptr), _x_, sizeof(*(ptr)));	\
 })
 
 #define xchg32(ptr, x)							\
diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
index 84c3f0d576c5b1..ca32deff9880ea 100644
--- a/arch/s390/include/asm/cmpxchg.h
+++ b/arch/s390/include/asm/cmpxchg.h
@@ -14,8 +14,8 @@
 
 void __xchg_called_with_bad_pointer(void);
 
-static __always_inline unsigned long __xchg(unsigned long x,
-					    unsigned long address, int size)
+static __always_inline unsigned long
+__arch_xchg(unsigned long x, unsigned long address, int size)
 {
 	unsigned long old;
 	int shift;
@@ -77,8 +77,8 @@ static __always_inline unsigned long __xchg(unsigned long x,
 	__typeof__(*(ptr)) __ret;					\
 									\
 	__ret = (__typeof__(*(ptr)))					\
-		__xchg((unsigned long)(x), (unsigned long)(ptr),	\
-		       sizeof(*(ptr)));					\
+		__arch_xchg((unsigned long)(x), (unsigned long)(ptr),	\
+			    sizeof(*(ptr)));				\
 	__ret;								\
 })
 
diff --git a/arch/sh/include/asm/cmpxchg.h b/arch/sh/include/asm/cmpxchg.h
index 0ed9b3f4a57796..288f6f38d98fb4 100644
--- a/arch/sh/include/asm/cmpxchg.h
+++ b/arch/sh/include/asm/cmpxchg.h
@@ -22,7 +22,7 @@
 
 extern void __xchg_called_with_bad_pointer(void);
 
-#define __xchg(ptr, x, size)				\
+#define __arch_xchg(ptr, x, size)				\
 ({							\
 	unsigned long __xchg__res;			\
 	volatile void *__xchg_ptr = (ptr);		\
@@ -46,7 +46,7 @@ extern void __xchg_called_with_bad_pointer(void);
 })
 
 #define arch_xchg(ptr,x)	\
-	((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
+	((__typeof__(*(ptr)))__arch_xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
 
 /* This function doesn't exist, so you'll get a linker error
  * if something tries to do an invalid cmpxchg(). */
diff --git a/arch/sparc/include/asm/cmpxchg_32.h b/arch/sparc/include/asm/cmpxchg_32.h
index 27a57a3a7597eb..7a1339533d1d7e 100644
--- a/arch/sparc/include/asm/cmpxchg_32.h
+++ b/arch/sparc/include/asm/cmpxchg_32.h
@@ -15,7 +15,7 @@
 unsigned long __xchg_u32(volatile u32 *m, u32 new);
 void __xchg_called_with_bad_pointer(void);
 
-static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int size)
+static inline unsigned long __arch_xchg(unsigned long x, __volatile__ void * ptr, int size)
 {
 	switch (size) {
 	case 4:
@@ -25,7 +25,7 @@ static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int
 	return x;
 }
 
-#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
+#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__arch_xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
 
 /* Emulate cmpxchg() the same way we emulate atomics,
  * by hashing the object address and indexing into an array
diff --git a/arch/sparc/include/asm/cmpxchg_64.h b/arch/sparc/include/asm/cmpxchg_64.h
index 12d00a42c0a3ed..66cd61dde9ec1f 100644
--- a/arch/sparc/include/asm/cmpxchg_64.h
+++ b/arch/sparc/include/asm/cmpxchg_64.h
@@ -55,7 +55,7 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long
 #define arch_xchg(ptr,x)							\
 ({	__typeof__(*(ptr)) __ret;					\
 	__ret = (__typeof__(*(ptr)))					\
-		__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)));	\
+		__arch_xchg((unsigned long)(x), (ptr), sizeof(*(ptr)));	\
 	__ret;								\
 })
 
@@ -87,8 +87,8 @@ xchg16(__volatile__ unsigned short *m, unsigned short val)
 	return (load32 & mask) >> bit_shift;
 }
 
-static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr,
-				       int size)
+static inline unsigned long
+__arch_xchg(unsigned long x, __volatile__ void * ptr, int size)
 {
 	switch (size) {
 	case 2:
diff --git a/arch/xtensa/include/asm/cmpxchg.h b/arch/xtensa/include/asm/cmpxchg.h
index eb87810357ad88..675a11ea8de76b 100644
--- a/arch/xtensa/include/asm/cmpxchg.h
+++ b/arch/xtensa/include/asm/cmpxchg.h
@@ -170,7 +170,7 @@ static inline unsigned long xchg_u32(volatile int * m, unsigned long val)
 }
 
 #define arch_xchg(ptr,x) \
-	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+	((__typeof__(*(ptr)))__arch_xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 
 static inline u32 xchg_small(volatile void *ptr, u32 x, int size)
 {
@@ -203,7 +203,7 @@ static inline u32 xchg_small(volatile void *ptr, u32 x, int size)
 extern void __xchg_called_with_bad_pointer(void);
 
 static __inline__ unsigned long
-__xchg(unsigned long x, volatile void * ptr, int size)
+__arch_xchg(unsigned long x, volatile void * ptr, int size)
 {
 	switch (size) {
 	case 1:
-- 
2.34.1