[PATCH 5/6] bitops: wrap non-atomic bitops with a transparent macro

From: Alexander Lobakin
Date: Mon Jun 06 2022 - 07:51:08 EST

In preparation for altering the non-atomic bitops with a macro, wrap
them in a transparent definition. This requires prepending one more
'_' to their names in order to be able to do that seamlessly.
sparc32 already has the triple-underscored functions, so I had to
rename them ('___' -> 'sp32_').

Signed-off-by: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx>
---
arch/alpha/include/asm/bitops.h | 14 ++++----
arch/hexagon/include/asm/bitops.h | 16 +++++-----
arch/ia64/include/asm/bitops.h | 26 +++++++--------
arch/m68k/include/asm/bitops.h | 14 ++++----
arch/sh/include/asm/bitops-op32.h | 22 ++++++-------
arch/sparc/include/asm/bitops_32.h | 18 +++++------
arch/sparc/lib/atomic32.c | 12 +++----
.../bitops/instrumented-non-atomic.h | 28 ++++++++--------
include/asm-generic/bitops/non-atomic.h | 14 ++++----
include/linux/bitops.h | 32 ++++++++++++++-----
tools/include/asm-generic/bitops/non-atomic.h | 24 +++++++-------
tools/include/linux/bitops.h | 16 ++++++++++
12 files changed, 134 insertions(+), 102 deletions(-)

diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index 381ad2eae4b4..e7d119826062 100644
--- a/arch/alpha/include/asm/bitops.h
+++ b/arch/alpha/include/asm/bitops.h
@@ -47,7 +47,7 @@ set_bit(unsigned long nr, volatile void * addr)
* WARNING: non atomic version.
*/
static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
int *m = ((int *) addr) + (nr >> 5);

@@ -83,7 +83,7 @@ clear_bit_unlock(unsigned long nr, volatile void * addr)
* WARNING: non atomic version.
*/
static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
int *m = ((int *) addr) + (nr >> 5);

@@ -119,7 +119,7 @@ change_bit(unsigned long nr, volatile void * addr)
* WARNING: non atomic version.
*/
static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
int *m = ((int *) addr) + (nr >> 5);

@@ -187,7 +187,7 @@ test_and_set_bit_lock(unsigned long nr, volatile void *addr)
* WARNING: non atomic version.
*/
static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = 1 << (nr & 0x1f);
int *m = ((int *) addr) + (nr >> 5);
@@ -231,7 +231,7 @@ test_and_clear_bit(unsigned long nr, volatile void * addr)
* WARNING: non atomic version.
*/
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = 1 << (nr & 0x1f);
int *m = ((int *) addr) + (nr >> 5);
@@ -273,7 +273,7 @@ test_and_change_bit(unsigned long nr, volatile void * addr)
* WARNING: non atomic version.
*/
static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = 1 << (nr & 0x1f);
int *m = ((int *) addr) + (nr >> 5);
@@ -284,7 +284,7 @@ __test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
}

static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
return (1UL & (((const int *) addr)[nr >> 5] >> (nr & 31))) != 0UL;
}
diff --git a/arch/hexagon/include/asm/bitops.h b/arch/hexagon/include/asm/bitops.h
index a3bfe3a8d4b7..37144f8e0b0c 100644
--- a/arch/hexagon/include/asm/bitops.h
+++ b/arch/hexagon/include/asm/bitops.h
@@ -128,44 +128,44 @@ static inline void change_bit(int nr, volatile void *addr)
*
*/
static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
test_and_clear_bit(nr, addr);
}

static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
test_and_set_bit(nr, addr);
}

static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
test_and_change_bit(nr, addr);
}

/* Apparently, at least some of these are allowed to be non-atomic */
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_clear_bit(nr, addr);
}

static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_set_bit(nr, addr);
}

static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_change_bit(nr, addr);
}

static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
int retval;

@@ -179,7 +179,7 @@ test_bit(unsigned long nr, const volatile unsigned long *addr)
return retval;
}

-#define __test_bit(nr, addr) test_bit(nr, addr)
+#define __test_bit(nr, addr) _test_bit(nr, addr)

/*
* ffz - find first zero in word.
diff --git a/arch/ia64/include/asm/bitops.h b/arch/ia64/include/asm/bitops.h
index 4267a217a503..3cb231fb0283 100644
--- a/arch/ia64/include/asm/bitops.h
+++ b/arch/ia64/include/asm/bitops.h
@@ -53,7 +53,7 @@ set_bit (int nr, volatile void *addr)
}

/**
- * __set_bit - Set a bit in memory
+ * ___set_bit - Set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
*
@@ -62,7 +62,7 @@ set_bit (int nr, volatile void *addr)
* may be that only one operation succeeds.
*/
static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
*((__u32 *) addr + (nr >> 5)) |= (1 << (nr & 31));
}
@@ -135,7 +135,7 @@ __clear_bit_unlock(int nr, void *addr)
}

/**
- * __clear_bit - Clears a bit in memory (non-atomic version)
+ * ___clear_bit - Clears a bit in memory (non-atomic version)
* @nr: the bit to clear
* @addr: the address to start counting from
*
@@ -144,7 +144,7 @@ __clear_bit_unlock(int nr, void *addr)
* may be that only one operation succeeds.
*/
static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
*((__u32 *) addr + (nr >> 5)) &= ~(1 << (nr & 31));
}
@@ -175,7 +175,7 @@ change_bit (int nr, volatile void *addr)
}

/**
- * __change_bit - Toggle a bit in memory
+ * ___change_bit - Toggle a bit in memory
* @nr: the bit to toggle
* @addr: the address to start counting from
*
@@ -184,7 +184,7 @@ change_bit (int nr, volatile void *addr)
* may be that only one operation succeeds.
*/
static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
*((__u32 *) addr + (nr >> 5)) ^= (1 << (nr & 31));
}
@@ -224,7 +224,7 @@ test_and_set_bit (int nr, volatile void *addr)
#define test_and_set_bit_lock test_and_set_bit

/**
- * __test_and_set_bit - Set a bit and return its old value
+ * ___test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
@@ -233,7 +233,7 @@ test_and_set_bit (int nr, volatile void *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
__u32 *p = (__u32 *) addr + (nr >> 5);
__u32 m = 1 << (nr & 31);
@@ -269,7 +269,7 @@ test_and_clear_bit (int nr, volatile void *addr)
}

/**
- * __test_and_clear_bit - Clear a bit and return its old value
+ * ___test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
@@ -278,7 +278,7 @@ test_and_clear_bit (int nr, volatile void *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
__u32 *p = (__u32 *) addr + (nr >> 5);
__u32 m = 1 << (nr & 31);
@@ -314,14 +314,14 @@ test_and_change_bit (int nr, volatile void *addr)
}

/**
- * __test_and_change_bit - Change a bit and return its old value
+ * ___test_and_change_bit - Change a bit and return its old value
* @nr: Bit to change
* @addr: Address to count from
*
* This operation is non-atomic and can be reordered.
*/
static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
__u32 old, bit = (1 << (nr & 31));
__u32 *m = (__u32 *) addr + (nr >> 5);
@@ -332,7 +332,7 @@ __test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
}

static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
return 1 & (((const volatile __u32 *) addr)[nr >> 5] >> (nr & 31));
}
diff --git a/arch/m68k/include/asm/bitops.h b/arch/m68k/include/asm/bitops.h
index 9d44bd4713cb..ed08c9d9c547 100644
--- a/arch/m68k/include/asm/bitops.h
+++ b/arch/m68k/include/asm/bitops.h
@@ -66,7 +66,7 @@ static inline void bfset_mem_set_bit(int nr, volatile unsigned long *vaddr)
#endif

static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
set_bit(nr, addr);
}
@@ -109,7 +109,7 @@ static inline void bfclr_mem_clear_bit(int nr, volatile unsigned long *vaddr)
#endif

static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
clear_bit(nr, addr);
}
@@ -152,13 +152,13 @@ static inline void bfchg_mem_change_bit(int nr, volatile unsigned long *vaddr)
#endif

static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
change_bit(nr, addr);
}

static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
return (addr[nr >> 5] & (1UL << (nr & 31))) != 0;
}
@@ -212,7 +212,7 @@ static inline int bfset_mem_test_and_set_bit(int nr,
#endif

static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_set_bit(nr, addr);
}
@@ -265,7 +265,7 @@ static inline int bfclr_mem_test_and_clear_bit(int nr,
#endif

static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_clear_bit(nr, addr);
}
@@ -318,7 +318,7 @@ static inline int bfchg_mem_test_and_change_bit(int nr,
#endif

static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
return test_and_change_bit(nr, addr);
}
diff --git a/arch/sh/include/asm/bitops-op32.h b/arch/sh/include/asm/bitops-op32.h
index dcd85866a394..24b8a809c1b9 100644
--- a/arch/sh/include/asm/bitops-op32.h
+++ b/arch/sh/include/asm/bitops-op32.h
@@ -19,7 +19,7 @@
#endif

static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
if (__builtin_constant_p(nr)) {
__asm__ __volatile__ (
@@ -37,7 +37,7 @@ __set_bit(unsigned long nr, volatile unsigned long *addr)
}

static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
if (__builtin_constant_p(nr)) {
__asm__ __volatile__ (
@@ -56,7 +56,7 @@ __clear_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __change_bit - Toggle a bit in memory
+ * ___change_bit - Toggle a bit in memory
* @nr: the bit to change
* @addr: the address to start counting from
*
@@ -65,7 +65,7 @@ __clear_bit(unsigned long nr, volatile unsigned long *addr)
* may be that only one operation succeeds.
*/
static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
if (__builtin_constant_p(nr)) {
__asm__ __volatile__ (
@@ -84,7 +84,7 @@ __change_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __test_and_set_bit - Set a bit and return its old value
+ * ___test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
@@ -93,7 +93,7 @@ __change_bit(unsigned long nr, volatile unsigned long *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -104,7 +104,7 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __test_and_clear_bit - Clear a bit and return its old value
+ * ___test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
@@ -113,7 +113,7 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -125,7 +125,7 @@ __test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)

/* WARNING: non atomic and it can be reordered! */
static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -136,12 +136,12 @@ __test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * test_bit - Determine whether a bit is set
+ * _test_bit - Determine whether a bit is set
* @nr: bit number to test
* @addr: Address to start counting from
*/
static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}
diff --git a/arch/sparc/include/asm/bitops_32.h b/arch/sparc/include/asm/bitops_32.h
index 889afa9f990f..3448c191b484 100644
--- a/arch/sparc/include/asm/bitops_32.h
+++ b/arch/sparc/include/asm/bitops_32.h
@@ -19,9 +19,9 @@
#error only <linux/bitops.h> can be included directly
#endif

-unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
-unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
-unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
+unsigned long sp32___set_bit(unsigned long *addr, unsigned long mask);
+unsigned long sp32___clear_bit(unsigned long *addr, unsigned long mask);
+unsigned long sp32___change_bit(unsigned long *addr, unsigned long mask);

/*
* Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
@@ -36,7 +36,7 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *add
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- return ___set_bit(ADDR, mask) != 0;
+ return sp32___set_bit(ADDR, mask) != 0;
}

static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
@@ -46,7 +46,7 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- (void) ___set_bit(ADDR, mask);
+ (void) sp32___set_bit(ADDR, mask);
}

static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
@@ -56,7 +56,7 @@ static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *a
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- return ___clear_bit(ADDR, mask) != 0;
+ return sp32___clear_bit(ADDR, mask) != 0;
}

static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
@@ -66,7 +66,7 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- (void) ___clear_bit(ADDR, mask);
+ (void) sp32___clear_bit(ADDR, mask);
}

static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
@@ -76,7 +76,7 @@ static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- return ___change_bit(ADDR, mask) != 0;
+ return sp32___change_bit(ADDR, mask) != 0;
}

static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
@@ -86,7 +86,7 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);

- (void) ___change_bit(ADDR, mask);
+ (void) sp32___change_bit(ADDR, mask);
}

#include <asm-generic/bitops/non-atomic.h>
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index 8b81d0f00c97..cf80d1ae352b 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -120,7 +120,7 @@ void arch_atomic_set(atomic_t *v, int i)
}
EXPORT_SYMBOL(arch_atomic_set);

-unsigned long ___set_bit(unsigned long *addr, unsigned long mask)
+unsigned long sp32___set_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;

@@ -131,9 +131,9 @@ unsigned long ___set_bit(unsigned long *addr, unsigned long mask)

return old & mask;
}
-EXPORT_SYMBOL(___set_bit);
+EXPORT_SYMBOL(sp32___set_bit);

-unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)
+unsigned long sp32___clear_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;

@@ -144,9 +144,9 @@ unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)

return old & mask;
}
-EXPORT_SYMBOL(___clear_bit);
+EXPORT_SYMBOL(sp32___clear_bit);

-unsigned long ___change_bit(unsigned long *addr, unsigned long mask)
+unsigned long sp32___change_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;

@@ -157,7 +157,7 @@ unsigned long ___change_bit(unsigned long *addr, unsigned long mask)

return old & mask;
}
-EXPORT_SYMBOL(___change_bit);
+EXPORT_SYMBOL(sp32___change_bit);

unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
{
diff --git a/include/asm-generic/bitops/instrumented-non-atomic.h b/include/asm-generic/bitops/instrumented-non-atomic.h
index b019f77ef21c..988a3bbfba34 100644
--- a/include/asm-generic/bitops/instrumented-non-atomic.h
+++ b/include/asm-generic/bitops/instrumented-non-atomic.h
@@ -14,7 +14,7 @@
#include <linux/instrumented.h>

/**
- * __set_bit - Set a bit in memory
+ * ___set_bit - Set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
*
@@ -23,14 +23,14 @@
* succeeds.
*/
static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
instrument_write(addr + BIT_WORD(nr), sizeof(long));
arch___set_bit(nr, addr);
}

/**
- * __clear_bit - Clears a bit in memory
+ * ___clear_bit - Clears a bit in memory
* @nr: the bit to clear
* @addr: the address to start counting from
*
@@ -39,14 +39,14 @@ __set_bit(unsigned long nr, volatile unsigned long *addr)
* succeeds.
*/
static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
instrument_write(addr + BIT_WORD(nr), sizeof(long));
arch___clear_bit(nr, addr);
}

/**
- * __change_bit - Toggle a bit in memory
+ * ___change_bit - Toggle a bit in memory
* @nr: the bit to change
* @addr: the address to start counting from
*
@@ -55,7 +55,7 @@ __clear_bit(unsigned long nr, volatile unsigned long *addr)
* succeeds.
*/
static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
instrument_write(addr + BIT_WORD(nr), sizeof(long));
arch___change_bit(nr, addr);
@@ -86,7 +86,7 @@ static __always_inline void __instrument_read_write_bitop(long nr, volatile unsi
}

/**
- * __test_and_set_bit - Set a bit and return its old value
+ * ___test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
@@ -94,14 +94,14 @@ static __always_inline void __instrument_read_write_bitop(long nr, volatile unsi
* can appear to succeed but actually fail.
*/
static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
__instrument_read_write_bitop(nr, addr);
return arch___test_and_set_bit(nr, addr);
}

/**
- * __test_and_clear_bit - Clear a bit and return its old value
+ * ___test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
@@ -109,14 +109,14 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
* can appear to succeed but actually fail.
*/
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
__instrument_read_write_bitop(nr, addr);
return arch___test_and_clear_bit(nr, addr);
}

/**
- * __test_and_change_bit - Change a bit and return its old value
+ * ___test_and_change_bit - Change a bit and return its old value
* @nr: Bit to change
* @addr: Address to count from
*
@@ -124,19 +124,19 @@ __test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
* can appear to succeed but actually fail.
*/
static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
__instrument_read_write_bitop(nr, addr);
return arch___test_and_change_bit(nr, addr);
}

/**
- * test_bit - Determine whether a bit is set
+ * _test_bit - Determine whether a bit is set
* @nr: bit number to test
* @addr: Address to start counting from
*/
static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
instrument_atomic_read(addr + BIT_WORD(nr), sizeof(long));
return arch_test_bit(nr, addr);
diff --git a/include/asm-generic/bitops/non-atomic.h b/include/asm-generic/bitops/non-atomic.h
index 7ce0ed22fb5f..0c488331c9e7 100644
--- a/include/asm-generic/bitops/non-atomic.h
+++ b/include/asm-generic/bitops/non-atomic.h
@@ -6,24 +6,24 @@
#include <asm/types.h>

#define arch___set_bit gen___set_bit
-#define __set_bit arch___set_bit
+#define ___set_bit arch___set_bit

#define arch___clear_bit gen___clear_bit
-#define __clear_bit arch___clear_bit
+#define ___clear_bit arch___clear_bit

#define arch___change_bit gen___change_bit
-#define __change_bit arch___change_bit
+#define ___change_bit arch___change_bit

#define arch___test_and_set_bit gen___test_and_set_bit
-#define __test_and_set_bit arch___test_and_set_bit
+#define ___test_and_set_bit arch___test_and_set_bit

#define arch___test_and_clear_bit gen___test_and_clear_bit
-#define __test_and_clear_bit arch___test_and_clear_bit
+#define ___test_and_clear_bit arch___test_and_clear_bit

#define arch___test_and_change_bit gen___test_and_change_bit
-#define __test_and_change_bit arch___test_and_change_bit
+#define ___test_and_change_bit arch___test_and_change_bit

#define arch_test_bit gen_test_bit
-#define test_bit arch_test_bit
+#define _test_bit arch_test_bit

#endif /* _ASM_GENERIC_BITOPS_NON_ATOMIC_H_ */
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 5520ac9b1c24..33cfc836a115 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -26,8 +26,24 @@ extern unsigned int __sw_hweight16(unsigned int w);
extern unsigned int __sw_hweight32(unsigned int w);
extern unsigned long __sw_hweight64(__u64 w);

+/*
+ * Defined here because those may be needed by architecture-specific static
+ * inlines.
+ */
+
#include <asm-generic/bitops/generic-non-atomic.h>

+#define bitop(op, nr, addr) \
+ op(nr, addr)
+
+#define __set_bit(nr, addr) bitop(___set_bit, nr, addr)
+#define __clear_bit(nr, addr) bitop(___clear_bit, nr, addr)
+#define __change_bit(nr, addr) bitop(___change_bit, nr, addr)
+#define __test_and_set_bit(nr, addr) bitop(___test_and_set_bit, nr, addr)
+#define __test_and_clear_bit(nr, addr) bitop(___test_and_clear_bit, nr, addr)
+#define __test_and_change_bit(nr, addr) bitop(___test_and_change_bit, nr, addr)
+#define test_bit(nr, addr) bitop(_test_bit, nr, addr)
+
/*
* Include this here because some architectures need generic_ffs/fls in
* scope
@@ -35,14 +51,14 @@ extern unsigned long __sw_hweight64(__u64 w);
#include <asm/bitops.h>

/* Check that the bitops prototypes are sane */
-#define __check_bitop_pr(name) static_assert(__same_type(name, gen_##name))
-__check_bitop_pr(__set_bit);
-__check_bitop_pr(__clear_bit);
-__check_bitop_pr(__change_bit);
-__check_bitop_pr(__test_and_set_bit);
-__check_bitop_pr(__test_and_clear_bit);
-__check_bitop_pr(__test_and_change_bit);
-__check_bitop_pr(test_bit);
+#define __check_bitop_pr(name) static_assert(__same_type(name, gen##name))
+__check_bitop_pr(___set_bit);
+__check_bitop_pr(___clear_bit);
+__check_bitop_pr(___change_bit);
+__check_bitop_pr(___test_and_set_bit);
+__check_bitop_pr(___test_and_clear_bit);
+__check_bitop_pr(___test_and_change_bit);
+__check_bitop_pr(_test_bit);
#undef __check_bitop_pr

static inline int get_bitmask_order(unsigned int count)
diff --git a/tools/include/asm-generic/bitops/non-atomic.h b/tools/include/asm-generic/bitops/non-atomic.h
index e5e78e42e57b..0c472a833408 100644
--- a/tools/include/asm-generic/bitops/non-atomic.h
+++ b/tools/include/asm-generic/bitops/non-atomic.h
@@ -5,7 +5,7 @@
#include <linux/bits.h>

/**
- * __set_bit - Set a bit in memory
+ * ___set_bit - Set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
*
@@ -14,7 +14,7 @@
* may be that only one operation succeeds.
*/
static __always_inline void
-__set_bit(unsigned long nr, volatile unsigned long *addr)
+___set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -23,7 +23,7 @@ __set_bit(unsigned long nr, volatile unsigned long *addr)
}

static __always_inline void
-__clear_bit(unsigned long nr, volatile unsigned long *addr)
+___clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -32,7 +32,7 @@ __clear_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __change_bit - Toggle a bit in memory
+ * ___change_bit - Toggle a bit in memory
* @nr: the bit to change
* @addr: the address to start counting from
*
@@ -41,7 +41,7 @@ __clear_bit(unsigned long nr, volatile unsigned long *addr)
* may be that only one operation succeeds.
*/
static __always_inline void
-__change_bit(unsigned long nr, volatile unsigned long *addr)
+___change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -50,7 +50,7 @@ __change_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __test_and_set_bit - Set a bit and return its old value
+ * ___test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
@@ -59,7 +59,7 @@ __change_bit(unsigned long nr, volatile unsigned long *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -70,7 +70,7 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * __test_and_clear_bit - Clear a bit and return its old value
+ * ___test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
@@ -79,7 +79,7 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
* but actually fail. You must protect multiple accesses with a lock.
*/
static __always_inline bool
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -91,7 +91,7 @@ __test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)

/* WARNING: non atomic and it can be reordered! */
static __always_inline bool
-__test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -102,12 +102,12 @@ __test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
}

/**
- * test_bit - Determine whether a bit is set
+ * _test_bit - Determine whether a bit is set
* @nr: bit number to test
* @addr: Address to start counting from
*/
static __always_inline bool
-test_bit(unsigned long nr, const volatile unsigned long *addr)
+_test_bit(unsigned long nr, const volatile unsigned long *addr)
{
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}
diff --git a/tools/include/linux/bitops.h b/tools/include/linux/bitops.h
index 5fca38fe1ba8..f18683b95ea6 100644
--- a/tools/include/linux/bitops.h
+++ b/tools/include/linux/bitops.h
@@ -25,6 +25,22 @@ extern unsigned int __sw_hweight16(unsigned int w);
extern unsigned int __sw_hweight32(unsigned int w);
extern unsigned long __sw_hweight64(__u64 w);

+/*
+ * Defined here because those may be needed by architecture-specific static
+ * inlines.
+ */
+
+#define bitop(op, nr, addr) \
+ op(nr, addr)
+
+#define __set_bit(nr, addr) bitop(___set_bit, nr, addr)
+#define __clear_bit(nr, addr) bitop(___clear_bit, nr, addr)
+#define __change_bit(nr, addr) bitop(___change_bit, nr, addr)
+#define __test_and_set_bit(nr, addr) bitop(___test_and_set_bit, nr, addr)
+#define __test_and_clear_bit(nr, addr) bitop(___test_and_clear_bit, nr, addr)
+#define __test_and_change_bit(nr, addr) bitop(___test_and_change_bit, nr, addr)
+#define test_bit(nr, addr) bitop(_test_bit, nr, addr)
+
/*
* Include this here because some architectures need generic_ffs/fls in
* scope
--
2.36.1