[PATCH]: 2.5.30 : __builtin_expect() cleanups in alpha code (rwsem.h)

From: Manik Raina (manik@cisco.com)
Date: Mon Aug 05 2002 - 05:13:39 EST


Resending with diffs inline ... please apply ..
diffs are straightforward. Should patch with "patch -p1"

--- linux-2.5.30/include/asm-alpha/rwsem.h~ Fri Aug 2 02:46:35 2002
+++ linux-2.5.30/include/asm-alpha/rwsem.h Mon Aug 5 15:34:59 2002
@@ -80,13 +80,13 @@
         ".subsection 2\n"
         "2: br 1b\n"
         ".previous"
         :"=&r" (oldcount), "=m" (sem->count), "=&r" (temp)
         :"Ir" (RWSEM_ACTIVE_READ_BIAS), "m" (sem->count) : "memory");
 #endif
- if (__builtin_expect(oldcount < 0, 0))
+ if (unlikely(oldcount < 0))
                 rwsem_down_read_failed(sem);
 }

 static inline void __down_write(struct rw_semaphore *sem)
 {
         long oldcount;
@@ -104,13 +104,13 @@
         ".subsection 2\n"
         "2: br 1b\n"
         ".previous"
         :"=&r" (oldcount), "=m" (sem->count), "=&r" (temp)
         :"Ir" (RWSEM_ACTIVE_WRITE_BIAS), "m" (sem->count) : "memory");
 #endif
- if (__builtin_expect(oldcount, 0))
+ if (unlikely(oldcount))
                 rwsem_down_write_failed(sem);
 }

 static inline void __up_read(struct rw_semaphore *sem)
 {
         long oldcount;
@@ -128,13 +128,13 @@
         ".subsection 2\n"
         "2: br 1b\n"
         ".previous"
         :"=&r" (oldcount), "=m" (sem->count), "=&r" (temp)
         :"Ir" (RWSEM_ACTIVE_READ_BIAS), "m" (sem->count) : "memory");
 #endif
- if (__builtin_expect(oldcount < 0, 0))
+ if (unlikely(oldcount < 0))
                 if ((int)oldcount - RWSEM_ACTIVE_READ_BIAS == 0)
                         rwsem_wake(sem);
 }

 static inline void __up_write(struct rw_semaphore *sem)
 {
@@ -154,13 +154,13 @@
         ".subsection 2\n"
         "2: br 1b\n"
         ".previous"
         :"=&r" (count), "=m" (sem->count), "=&r" (temp)
         :"Ir" (RWSEM_ACTIVE_WRITE_BIAS), "m" (sem->count) : "memory");
 #endif
- if (__builtin_expect(count, 0))
+ if (unlikely(count))
                 if ((int)count == 0)
                         rwsem_wake(sem);
 }

 static inline void rwsem_atomic_add(long val, struct rw_semaphore *sem)
 {

-
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