patch-2.2.19 linux/include/asm-alpha/pgtable.h

• Lines: 15
• Date: Sun Mar 25 11:37:39 2001
• Orig file: v2.2.18/include/asm-alpha/pgtable.h
• Orig date: Sun Mar 25 11:12:39 2001

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.18/include/asm-alpha/pgtable.h linux/include/asm-alpha/pgtable.h
@@ -73,7 +73,13 @@
 __EXTERN_INLINE void
 ev5_flush_tlb_other(struct mm_struct *mm)
 {
-	mm->context = 0;
+	long * mmc = &mm->context[smp_processor_id()];
+	/*
+	 * Check it's not zero first to avoid cacheline ping pong when
+	 * possible.
+	 */
+	if (*mmc)
+		*mmc = 0;
 }
 
 /*