bootmem: factor out the marking of a PFN range

[linux-2.6] / include / asm-parisc / tlbflush.h

diff --git a/include/asm-parisc/tlbflush.h b/include/asm-parisc/tlbflush.h
index efbb2d8625b19d942be4bdc731ff09506159662b..b72ec66db699e56f0985ebd6d88d82a7ceb14411 100644 (file)
--- a/include/asm-parisc/tlbflush.h
+++ b/include/asm-parisc/tlbflush.h
@@ -3,11 +3,26 @@
 
 /* TLB flushing routines.... */
 
-#include <linux/config.h>
 #include <linux/mm.h>
+#include <linux/sched.h>
 #include <asm/mmu_context.h>
 
+
+/* This is for the serialisation of PxTLB broadcasts.  At least on the
+ * N class systems, only one PxTLB inter processor broadcast can be
+ * active at any one time on the Merced bus.  This tlb purge
+ * synchronisation is fairly lightweight and harmless so we activate
+ * it on all SMP systems not just the N class.  We also need to have
+ * preemption disabled on uniprocessor machines, and spin_lock does that
+ * nicely.
+ */
+extern spinlock_t pa_tlb_lock;
+
+#define purge_tlb_start(x) spin_lock(&pa_tlb_lock)
+#define purge_tlb_end(x) spin_unlock(&pa_tlb_lock)
+
 extern void flush_tlb_all(void);
+extern void flush_tlb_all_local(void *);
 
 /*
  * flush_tlb_mm()
@@ -42,10 +57,6 @@ static inline void flush_tlb_mm(struct mm_struct *mm)
 #endif
 }
 
-extern __inline__ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end)
-{
-}
- 
 static inline void flush_tlb_page(struct vm_area_struct *vma,
        unsigned long addr)
 {
@@ -59,34 +70,11 @@ static inline void flush_tlb_page(struct vm_area_struct *vma,
        purge_tlb_end();
 }
 
-static inline void flush_tlb_range(struct vm_area_struct *vma,
-       unsigned long start, unsigned long end)
-{
-       unsigned long npages;
-
-       npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-       if (npages >= 512)  /* 2MB of space: arbitrary, should be tuned */
-               flush_tlb_all();
-       else {
+void __flush_tlb_range(unsigned long sid,
+       unsigned long start, unsigned long end);
 
-               mtsp(vma->vm_mm->context,1);
-               purge_tlb_start();
-               if (split_tlb) {
-                       while (npages--) {
-                               pdtlb(start);
-                               pitlb(start);
-                               start += PAGE_SIZE;
-                       }
-               } else {
-                       while (npages--) {
-                               pdtlb(start);
-                               start += PAGE_SIZE;
-                       }
-               }
-               purge_tlb_end();
-       }
-}
+#define flush_tlb_range(vma,start,end) __flush_tlb_range((vma)->vm_mm->context,start,end)
 
-#define flush_tlb_kernel_range(start, end) flush_tlb_all()
+#define flush_tlb_kernel_range(start, end) __flush_tlb_range(0,start,end)
 
 #endif