AMD IOMMU: add stats counter for domain tlb flushes
Impact: see number of domain tlb flushes in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index e99022d..a897c72 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -73,6 +73,7 @@
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;
@@ -108,6 +109,7 @@
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
@@ -431,6 +433,8 @@
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);