1 files changed, 14 insertions, 4 deletions

diff --git a/include/asm-alpha/system.h b/include/asm-alpha/system.h
index 050e86d12891..cc9c7e8cced5 100644
--- a/include/asm-alpha/system.h
+++ b/include/asm-alpha/system.h
@@ -131,15 +131,25 @@ 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*);
 
+/*
+ * 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")