[PARISC] Optimize TLB flush on SMP systems

Signed-off-by: Randolph Chung <tausq@debian.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 11 insertions, 13 deletions

diff --git a/include/asm-parisc/tlbflush.h b/include/asm-parisc/tlbflush.h
index f662e837dea1..67b3814a71dd 100644
--- a/include/asm-parisc/tlbflush.h
+++ b/include/asm-parisc/tlbflush.h
@@ -39,21 +39,19 @@ extern void flush_tlb_all_local(void *);
  * etc. do not do that).
  */
 
-static inline void flush_tlb_mm(struct mm_struct *mm)
+static inline void __flush_tlb_mm(void *mmv)
 {
-        BUG_ON(mm == &init_mm); /* Should never happen */
+        struct mm_struct *mm = (struct mm_struct *)mmv;
+        if (mm == current->active_mm)
+                load_context(mm->context);
+}
 
-#ifdef CONFIG_SMP
-        flush_tlb_all();
-#else
-        if (mm) {
-                if (mm->context != 0)
-                        free_sid(mm->context);
-                mm->context = alloc_sid();
-                if (mm == current->active_mm)
-                        load_context(mm->context);
-        }
-#endif
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+        if (mm->context != 0)
+                free_sid(mm->context);
+        mm->context = alloc_sid();
+        on_each_cpu(__flush_tlb_mm, mm, 1, 1);
 }
 
 extern __inline__ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end)