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find: Switch from inline to __always_inline
'inline' keyword is only a recommendation for compiler. If it decides to
not inline find_bit nodemask functions, the whole small_const_nbits()
machinery doesn't work.
This is how a standard GCC 11.3.0 does for my x86_64 build now. This patch
replaces 'inline' directive with unconditional '__always_inline' to make
sure that there's always a chance for compile-time optimization. It doesn't
change size of kernel image, according to bloat-o-meter.
[[ Brian: split out from:
Subject: [PATCH 1/3] bitmap: switch from inline to __always_inline
https://lore.kernel.org/all/20221027043810.350460-2-yury.norov@gmail.com/
But rewritten, as there were too many conflicts. ]]
Co-developed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
This commit is contained in:
Yury Norov
parent
de9c2c66ad
commit
fda1dd3c54
@ -52,7 +52,7 @@ unsigned long _find_next_bit_le(const unsigned long *addr, unsigned
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* Returns the bit number for the next set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
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unsigned long offset)
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{
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@ -81,7 +81,7 @@ unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
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* Returns the bit number for the next set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_and_bit(const unsigned long *addr1,
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const unsigned long *addr2, unsigned long size,
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unsigned long offset)
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@ -112,7 +112,7 @@ unsigned long find_next_and_bit(const unsigned long *addr1,
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* Returns the bit number for the next set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_andnot_bit(const unsigned long *addr1,
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const unsigned long *addr2, unsigned long size,
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unsigned long offset)
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@ -142,7 +142,7 @@ unsigned long find_next_andnot_bit(const unsigned long *addr1,
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* Returns the bit number for the next set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_or_bit(const unsigned long *addr1,
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const unsigned long *addr2, unsigned long size,
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unsigned long offset)
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@ -171,7 +171,7 @@ unsigned long find_next_or_bit(const unsigned long *addr1,
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* Returns the bit number of the next zero bit
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* If no bits are zero, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
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unsigned long offset)
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{
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@ -198,7 +198,7 @@ unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
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* Returns the bit number of the first set bit.
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
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{
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if (small_const_nbits(size)) {
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@ -224,7 +224,7 @@ unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
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* Returns the bit number of the N'th set bit.
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* If no such, returns >= @size.
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*/
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static inline
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static __always_inline
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unsigned long find_nth_bit(const unsigned long *addr, unsigned long size, unsigned long n)
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{
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if (n >= size)
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@ -249,7 +249,7 @@ unsigned long find_nth_bit(const unsigned long *addr, unsigned long size, unsign
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* Returns the bit number of the N'th set bit.
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* If no such, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_nth_and_bit(const unsigned long *addr1, const unsigned long *addr2,
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unsigned long size, unsigned long n)
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{
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@ -276,7 +276,7 @@ unsigned long find_nth_and_bit(const unsigned long *addr1, const unsigned long *
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* Returns the bit number of the N'th set bit.
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* If no such, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_nth_andnot_bit(const unsigned long *addr1, const unsigned long *addr2,
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unsigned long size, unsigned long n)
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{
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@ -332,7 +332,7 @@ unsigned long find_nth_and_andnot_bit(const unsigned long *addr1,
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* Returns the bit number for the next set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_first_and_bit(const unsigned long *addr1,
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const unsigned long *addr2,
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unsigned long size)
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@ -357,7 +357,7 @@ unsigned long find_first_and_bit(const unsigned long *addr1,
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* Returns the bit number for the first set bit
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_first_and_and_bit(const unsigned long *addr1,
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const unsigned long *addr2,
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const unsigned long *addr3,
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@ -381,7 +381,7 @@ unsigned long find_first_and_and_bit(const unsigned long *addr1,
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* Returns the bit number of the first cleared bit.
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* If no bits are zero, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
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{
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if (small_const_nbits(size)) {
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@ -402,7 +402,7 @@ unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
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*
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* Returns the bit number of the last set bit, or size.
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*/
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static inline
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static __always_inline
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unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
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{
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if (small_const_nbits(size)) {
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@ -425,7 +425,7 @@ unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
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* Returns the bit number for the next set bit, or first set bit up to @offset
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_and_bit_wrap(const unsigned long *addr1,
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const unsigned long *addr2,
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unsigned long size, unsigned long offset)
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@ -448,7 +448,7 @@ unsigned long find_next_and_bit_wrap(const unsigned long *addr1,
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* Returns the bit number for the next set bit, or first set bit up to @offset
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* If no bits are set, returns @size.
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*/
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static inline
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static __always_inline
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unsigned long find_next_bit_wrap(const unsigned long *addr,
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unsigned long size, unsigned long offset)
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{
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@ -465,7 +465,7 @@ unsigned long find_next_bit_wrap(const unsigned long *addr,
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* Helper for for_each_set_bit_wrap(). Make sure you're doing right thing
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* before using it alone.
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*/
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static inline
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static __always_inline
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unsigned long __for_each_wrap(const unsigned long *bitmap, unsigned long size,
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unsigned long start, unsigned long n)
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{
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@ -506,20 +506,20 @@ extern unsigned long find_next_clump8(unsigned long *clump,
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#if defined(__LITTLE_ENDIAN)
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static inline unsigned long find_next_zero_bit_le(const void *addr,
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unsigned long size, unsigned long offset)
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static __always_inline
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unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset)
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{
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return find_next_zero_bit(addr, size, offset);
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}
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static inline unsigned long find_next_bit_le(const void *addr,
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unsigned long size, unsigned long offset)
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static __always_inline
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unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset)
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{
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return find_next_bit(addr, size, offset);
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}
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static inline unsigned long find_first_zero_bit_le(const void *addr,
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unsigned long size)
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static __always_inline
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unsigned long find_first_zero_bit_le(const void *addr, unsigned long size)
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{
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return find_first_zero_bit(addr, size);
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}
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@ -527,7 +527,7 @@ static inline unsigned long find_first_zero_bit_le(const void *addr,
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#elif defined(__BIG_ENDIAN)
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#ifndef find_next_zero_bit_le
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static inline
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static __always_inline
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unsigned long find_next_zero_bit_le(const void *addr, unsigned
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long size, unsigned long offset)
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{
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@ -546,7 +546,7 @@ unsigned long find_next_zero_bit_le(const void *addr, unsigned
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#endif
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#ifndef find_first_zero_bit_le
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static inline
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static __always_inline
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unsigned long find_first_zero_bit_le(const void *addr, unsigned long size)
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{
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if (small_const_nbits(size)) {
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@ -560,7 +560,7 @@ unsigned long find_first_zero_bit_le(const void *addr, unsigned long size)
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#endif
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#ifndef find_next_bit_le
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static inline
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static __always_inline
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unsigned long find_next_bit_le(const void *addr, unsigned
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long size, unsigned long offset)
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{
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