sched: simplify sched_find_first_bit()

simplify sched_rt.c's sched_find_first_bit() function: there are
only 100 RT priority levels left.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/asm-generic/bitops/sched.h b/include/asm-generic/bitops/sched.h
index 815bb01..604fab7 100644 (file)
--- a/include/asm-generic/bitops/sched.h
+++ b/include/asm-generic/bitops/sched.h
@@ -6,28 +6,23 @@
 
 /*
  * Every architecture must define this function. It's the fastest
- * way of searching a 140-bit bitmap where the first 100 bits are
- * unlikely to be set. It's guaranteed that at least one of the 140
- * bits is cleared.
+ * way of searching a 100-bit bitmap.  It's guaranteed that at least
+ * one of the 100 bits is cleared.
  */
 static inline int sched_find_first_bit(const unsigned long *b)
 {
 #if BITS_PER_LONG == 64
-       if (unlikely(b[0]))
+       if (b[0])
                return __ffs(b[0]);
-       if (likely(b[1]))
-               return __ffs(b[1]) + 64;
-       return __ffs(b[2]) + 128;
+       return __ffs(b[1]) + 64;
 #elif BITS_PER_LONG == 32
-       if (unlikely(b[0]))
+       if (b[0])
                return __ffs(b[0]);
-       if (unlikely(b[1]))
+       if (b[1])
                return __ffs(b[1]) + 32;
-       if (unlikely(b[2]))
+       if (b[2])
                return __ffs(b[2]) + 64;
-       if (b[3])
-               return __ffs(b[3]) + 96;
-       return __ffs(b[4]) + 128;
+       return __ffs(b[3]) + 96;
 #else
 #error BITS_PER_LONG not defined
 #endif