diff options
-rw-r--r-- | include/asm-generic/bitops/sched.h | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/include/asm-generic/bitops/sched.h b/include/asm-generic/bitops/sched.h index 815bb0148060..604fab7031a6 100644 --- a/include/asm-generic/bitops/sched.h +++ b/include/asm-generic/bitops/sched.h | |||
@@ -6,28 +6,23 @@ | |||
6 | 6 | ||
7 | /* | 7 | /* |
8 | * Every architecture must define this function. It's the fastest | 8 | * Every architecture must define this function. It's the fastest |
9 | * way of searching a 140-bit bitmap where the first 100 bits are | 9 | * way of searching a 100-bit bitmap. It's guaranteed that at least |
10 | * unlikely to be set. It's guaranteed that at least one of the 140 | 10 | * one of the 100 bits is cleared. |
11 | * bits is cleared. | ||
12 | */ | 11 | */ |
13 | static inline int sched_find_first_bit(const unsigned long *b) | 12 | static inline int sched_find_first_bit(const unsigned long *b) |
14 | { | 13 | { |
15 | #if BITS_PER_LONG == 64 | 14 | #if BITS_PER_LONG == 64 |
16 | if (unlikely(b[0])) | 15 | if (b[0]) |
17 | return __ffs(b[0]); | 16 | return __ffs(b[0]); |
18 | if (likely(b[1])) | 17 | return __ffs(b[1]) + 64; |
19 | return __ffs(b[1]) + 64; | ||
20 | return __ffs(b[2]) + 128; | ||
21 | #elif BITS_PER_LONG == 32 | 18 | #elif BITS_PER_LONG == 32 |
22 | if (unlikely(b[0])) | 19 | if (b[0]) |
23 | return __ffs(b[0]); | 20 | return __ffs(b[0]); |
24 | if (unlikely(b[1])) | 21 | if (b[1]) |
25 | return __ffs(b[1]) + 32; | 22 | return __ffs(b[1]) + 32; |
26 | if (unlikely(b[2])) | 23 | if (b[2]) |
27 | return __ffs(b[2]) + 64; | 24 | return __ffs(b[2]) + 64; |
28 | if (b[3]) | 25 | return __ffs(b[3]) + 96; |
29 | return __ffs(b[3]) + 96; | ||
30 | return __ffs(b[4]) + 128; | ||
31 | #else | 26 | #else |
32 | #error BITS_PER_LONG not defined | 27 | #error BITS_PER_LONG not defined |
33 | #endif | 28 | #endif |