38 static __always_inline unsigned long variable__ffs(unsigned long word)  in variable__ffs()  argument
50 		      : "=r" (word) : "r" (word) :);  in variable__ffs()
52 	return word;  in variable__ffs()
57 	if ((word & 0xffffffff) == 0) {  in variable__ffs()
59 		word >>= 32;  in variable__ffs()
62 	if ((word & 0xffff) == 0) {  in variable__ffs()
64 		word >>= 16;  in variable__ffs()
66 	if ((word & 0xff) == 0) {  in variable__ffs()
68 		word >>= 8;  in variable__ffs()
70 	if ((word & 0xf) == 0) {  in variable__ffs()
72 		word >>= 4;  in variable__ffs()
74 	if ((word & 0x3) == 0) {  in variable__ffs()
76 		word >>= 2;  in variable__ffs()
78 	if ((word & 0x1) == 0)  in variable__ffs()
84  * __ffs - find first set bit in a long word
85  * @word: The word to search
89 #define __ffs(word)				\  argument
90 	(__builtin_constant_p(word) ?		\
91 	 (unsigned long)__builtin_ctzl(word) :	\
92 	 variable__ffs(word))
94 static __always_inline unsigned long variable__fls(unsigned long word)  in variable__fls()  argument
106 		      : "=r" (word) : "r" (word) :);  in variable__fls()
108 	return BITS_PER_LONG - 1 - word;  in variable__fls()
113 	if (!(word & (~0ul << 32))) {  in variable__fls()
115 		word <<= 32;  in variable__fls()
118 	if (!(word & (~0ul << (BITS_PER_LONG - 16)))) {  in variable__fls()
120 		word <<= 16;  in variable__fls()
122 	if (!(word & (~0ul << (BITS_PER_LONG - 8)))) {  in variable__fls()
124 		word <<= 8;  in variable__fls()
126 	if (!(word & (~0ul << (BITS_PER_LONG - 4)))) {  in variable__fls()
128 		word <<= 4;  in variable__fls()
130 	if (!(word & (~0ul << (BITS_PER_LONG - 2)))) {  in variable__fls()
132 		word <<= 2;  in variable__fls()
134 	if (!(word & (~0ul << (BITS_PER_LONG - 1))))  in variable__fls()
140  * __fls - find last set bit in a long word
141  * @word: the word to search
145 #define __fls(word)							\  argument
146 	(__builtin_constant_p(word) ?					\
147 	 (unsigned long)(BITS_PER_LONG - 1 - __builtin_clzl(word)) :	\
148 	 variable__fls(word))
195  * ffs - find first set bit in a word
196  * @x: the word to search
250  * fls - find last set bit in a word
251  * @x: the word to search
361  * restricted to acting on a single-word quantity.
389  * restricted to acting on a single-word quantity.
432  * if the bit lock itself protects access to the other bits in the word).