[PATCH 20/22] AMD IOMMU: add stats counter for domain tlb flushes

[Joerg Roedel]

Impact: see number of domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
 arch/x86/kernel/amd_iommu.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 8490a06..be6d107 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -72,6 +72,7 @@ DECLARE_STATS_COUNTER(cnt_alloc_coherent);
 DECLARE_STATS_COUNTER(cnt_free_coherent);
 DECLARE_STATS_COUNTER(cross_page);
 DECLARE_STATS_COUNTER(domain_flush_single);
+DECLARE_STATS_COUNTER(domain_flush_all);
 
 static struct dentry *stats_dir;
 static struct dentry *de_isolate;
@@ -107,6 +108,7 @@ static void amd_iommu_stats_init(void)
 	amd_iommu_stats_add(&cnt_free_coherent);
 	amd_iommu_stats_add(&cross_page);
 	amd_iommu_stats_add(&domain_flush_single);
+	amd_iommu_stats_add(&domain_flush_all);
 }
 
 #endif
@@ -430,6 +432,8 @@ static void iommu_flush_domain(u16 domid)
 	struct amd_iommu *iommu;
 	struct iommu_cmd cmd;
 
+	INC_STATS_COUNTER(domain_flush_all);
+
 	__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
 				      domid, 1, 1);
 
-- 
1.5.6.4


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