---

yaml --- r: 125637 b: refs/heads/master c: c185897 h: refs/heads/master i: 125635: 0cb6b97 v: v3
git-mirror · Jan 3, 2009 · 37e0165 · 37e0165
1 parent c800c27
commit 37e0165
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5d31ee7e08b7713596b999a42e67491bdf3665b3
+refs/heads/master: c1858976f5ef05122bb671f678beaf7e1fe1dd74
diff --git a/trunk/arch/x86/kernel/amd_iommu.c b/trunk/arch/x86/kernel/amd_iommu.c
@@ -71,6 +71,7 @@ DECLARE_STATS_COUNTER(cnt_map_sg);
 DECLARE_STATS_COUNTER(cnt_unmap_sg);
 DECLARE_STATS_COUNTER(cnt_alloc_coherent);
 DECLARE_STATS_COUNTER(cnt_free_coherent);
+DECLARE_STATS_COUNTER(cross_page);
 
 static struct dentry *stats_dir;
 static struct dentry *de_isolate;
@@ -104,6 +105,7 @@ static void amd_iommu_stats_init(void)
 	amd_iommu_stats_add(&cnt_unmap_sg);
 	amd_iommu_stats_add(&cnt_alloc_coherent);
 	amd_iommu_stats_add(&cnt_free_coherent);
+	amd_iommu_stats_add(&cross_page);
 }
 
 #endif
@@ -1217,6 +1219,9 @@ static dma_addr_t __map_single(struct device *dev,
 	pages = iommu_num_pages(paddr, size, PAGE_SIZE);
 	paddr &= PAGE_MASK;
 
+	if (pages > 1)
+		INC_STATS_COUNTER(cross_page);
+
 	if (align)
 		align_mask = (1UL << get_order(size)) - 1;