[PATCH] fix generic_fls64()

[linux-2.6] / include / asm-alpha / system.h

diff --git a/include/asm-alpha/system.h b/include/asm-alpha/system.h
index bdb4d66418f188767d89de67d1f4478ebbe41247..cc9c7e8cced5c2de6f88f3557de2bd6c4c3de385 100644 (file)
--- a/include/asm-alpha/system.h
+++ b/include/asm-alpha/system.h
@@ -4,6 +4,7 @@
 #include <linux/config.h>
 #include <asm/pal.h>
 #include <asm/page.h>
+#include <asm/barrier.h>
 
 /*
  * System defines.. Note that this is included both from .c and .S
@@ -130,44 +131,24 @@ struct el_common_EV6_mcheck {
 extern void halt(void) __attribute__((noreturn));
 #define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt))
 
-#define switch_to(P,N,L)                                               \
-  do {                                                                 \
-    (L) = alpha_switch_to(virt_to_phys(&(N)->thread_info->pcb), (P));  \
-    check_mmu_context();                                               \
+#define switch_to(P,N,L)                                                \
+  do {                                                                  \
+    (L) = alpha_switch_to(virt_to_phys(&task_thread_info(N)->pcb), (P)); \
+    check_mmu_context();                                                \
   } while (0)
 
 struct task_struct;
 extern struct task_struct *alpha_switch_to(unsigned long, struct task_struct*);
 
-#define mb() \
-__asm__ __volatile__("mb": : :"memory")
-
-#define rmb() \
-__asm__ __volatile__("mb": : :"memory")
-
-#define wmb() \
-__asm__ __volatile__("wmb": : :"memory")
-
-#define read_barrier_depends() \
-__asm__ __volatile__("mb": : :"memory")
-
-#ifdef CONFIG_SMP
-#define smp_mb()       mb()
-#define smp_rmb()      rmb()
-#define smp_wmb()      wmb()
-#define smp_read_barrier_depends()     read_barrier_depends()
-#else
-#define smp_mb()       barrier()
-#define smp_rmb()      barrier()
-#define smp_wmb()      barrier()
-#define smp_read_barrier_depends()     barrier()
-#endif
-
-#define set_mb(var, value) \
-do { var = value; mb(); } while (0)
-
-#define set_wmb(var, value) \
-do { var = value; wmb(); } while (0)
+/*
+ * On SMP systems, when the scheduler does migration-cost autodetection,
+ * it needs a way to flush as much of the CPU's caches as possible.
+ *
+ * TODO: fill this in!
+ */
+static inline void sched_cacheflush(void)
+{
+}
 
 #define imb() \
 __asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")