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authorJoerg Roedel <joerg.roedel@amd.com>2008-12-12 15:46:29 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 14:11:59 +0100
commitf57d98ae6979f7bcbf758023b4716f485385f903 (patch)
treed49ddb1732237a69e871691d020db3f0b8a20788
parentc1858976f5ef05122bb671f678beaf7e1fe1dd74 (diff)
downloadlinux-stericsson-f57d98ae6979f7bcbf758023b4716f485385f903.tar.gz
AMD IOMMU: add stats counter for single iommu domain tlb flushes
Impact: see number of single iommu domain tlb flushes in debugfs Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
-rw-r--r--arch/x86/kernel/amd_iommu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index f5455039b609..e99022d3a394 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -72,6 +72,7 @@ DECLARE_STATS_COUNTER(cnt_unmap_sg);
DECLARE_STATS_COUNTER(cnt_alloc_coherent);
DECLARE_STATS_COUNTER(cnt_free_coherent);
DECLARE_STATS_COUNTER(cross_page);
+DECLARE_STATS_COUNTER(domain_flush_single);
static struct dentry *stats_dir;
static struct dentry *de_isolate;
@@ -106,6 +107,7 @@ static void amd_iommu_stats_init(void)
amd_iommu_stats_add(&cnt_alloc_coherent);
amd_iommu_stats_add(&cnt_free_coherent);
amd_iommu_stats_add(&cross_page);
+ amd_iommu_stats_add(&domain_flush_single);
}
#endif
@@ -413,6 +415,8 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid)
{
u64 address = CMD_INV_IOMMU_ALL_PAGES_ADDRESS;
+ INC_STATS_COUNTER(domain_flush_single);
+
iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1);
}