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authorJoerg Roedel <joerg.roedel@amd.com>2008-12-12 15:48:28 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 14:11:59 +0100
commit18811f55d48e5f3ee70c4744c592f940022fa592 (patch)
tree626f9661a133e83780f3cc6e7c25691d1cccb970 /arch
parentf57d98ae6979f7bcbf758023b4716f485385f903 (diff)
downloadop-kernel-dev-18811f55d48e5f3ee70c4744c592f940022fa592.zip
op-kernel-dev-18811f55d48e5f3ee70c4744c592f940022fa592.tar.gz
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>
Diffstat (limited to 'arch')
-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 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_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;
@@ -108,6 +109,7 @@ 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
@@ -431,6 +433,8 @@ 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);
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