[PATCH v3 3/5] hexagon/bitops: force inlining of all bitops functions

From: Vincent Mailhol
Date: Sun Dec 17 2023 - 02:14:03 EST


The inline keyword actually does not guarantee that the compiler will
inline a functions. Whenever the goal is to actually inline a
function, __always_inline should always be preferred instead.

Reference: commit 8dd5032d9c54 ("x86/asm/bitops: Force inlining of
test_and_set_bit and friends")
Link: https://git.kernel.org/torvalds/c/8dd5032d9c54

Signed-off-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
---
arch/hexagon/include/asm/bitops.h | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/hexagon/include/asm/bitops.h b/arch/hexagon/include/asm/bitops.h
index 160d8f37fa1a..950d4acc2edc 100644
--- a/arch/hexagon/include/asm/bitops.h
+++ b/arch/hexagon/include/asm/bitops.h
@@ -28,7 +28,7 @@
* @nr: bit number to clear
* @addr: pointer to memory
*/
-static inline int test_and_clear_bit(int nr, volatile void *addr)
+static __always_inline int test_and_clear_bit(int nr, volatile void *addr)
{
int oldval;

@@ -52,7 +52,7 @@ static inline int test_and_clear_bit(int nr, volatile void *addr)
* @nr: bit number to set
* @addr: pointer to memory
*/
-static inline int test_and_set_bit(int nr, volatile void *addr)
+static __always_inline int test_and_set_bit(int nr, volatile void *addr)
{
int oldval;

@@ -78,7 +78,7 @@ static inline int test_and_set_bit(int nr, volatile void *addr)
* @nr: bit number to set
* @addr: pointer to memory
*/
-static inline int test_and_change_bit(int nr, volatile void *addr)
+static __always_inline int test_and_change_bit(int nr, volatile void *addr)
{
int oldval;

@@ -103,17 +103,17 @@ static inline int test_and_change_bit(int nr, volatile void *addr)
* Rewrite later to save a cycle or two.
*/

-static inline void clear_bit(int nr, volatile void *addr)
+static __always_inline void clear_bit(int nr, volatile void *addr)
{
test_and_clear_bit(nr, addr);
}

-static inline void set_bit(int nr, volatile void *addr)
+static __always_inline void set_bit(int nr, volatile void *addr)
{
test_and_set_bit(nr, addr);
}

-static inline void change_bit(int nr, volatile void *addr)
+static __always_inline void change_bit(int nr, volatile void *addr)
{
test_and_change_bit(nr, addr);
}
@@ -200,7 +200,7 @@ arch_test_bit_acquire(unsigned long nr, const volatile unsigned long *addr)
*
* Undefined if no zero exists, so code should check against ~0UL first.
*/
-static inline long ffz(int x)
+static __always_inline long ffz(int x)
{
int r;

@@ -217,7 +217,7 @@ static inline long ffz(int x)
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
-static inline int fls(unsigned int x)
+static __always_inline int fls(unsigned int x)
{
int r;

@@ -238,7 +238,7 @@ static inline int fls(unsigned int x)
* the libc and compiler builtin ffs routines, therefore
* differs in spirit from the above ffz (man ffs).
*/
-static inline int ffs(int x)
+static __always_inline int ffs(int x)
{
int r;

@@ -260,7 +260,7 @@ static inline int ffs(int x)
* bits_per_long assumed to be 32
* numbering starts at 0 I think (instead of 1 like ffs)
*/
-static inline unsigned long __ffs(unsigned long word)
+static __always_inline unsigned long __ffs(unsigned long word)
{
int num;

@@ -278,7 +278,7 @@ static inline unsigned long __ffs(unsigned long word)
* Undefined if no set bit exists, so code should check against 0 first.
* bits_per_long assumed to be 32
*/
-static inline unsigned long __fls(unsigned long word)
+static __always_inline unsigned long __fls(unsigned long word)
{
int num;

--
2.25.1