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authorJoerg Roedel <joerg.roedel@amd.com>2011-12-01 16:53:47 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2011-12-12 15:19:06 +0100
commit399be2f51979aaf4e3391d98d11e3aeaac7633a4 (patch)
treebcc956e6e6f6766a4d5480e9b582c31f1a35f70a /drivers/iommu
parent6a113ddc03bcc32d3d440dce42b445868d5be093 (diff)
downloadblackbird-op-linux-399be2f51979aaf4e3391d98d11e3aeaac7633a4.tar.gz
blackbird-op-linux-399be2f51979aaf4e3391d98d11e3aeaac7633a4.zip
iommu/amd: Add stat counter for IOMMUv2 events
Add some interesting statistic counters for events when IOMMUv2 is active. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index e453bbd09445..2a46b1d7a601 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -359,6 +359,11 @@ DECLARE_STATS_COUNTER(domain_flush_single);
DECLARE_STATS_COUNTER(domain_flush_all);
DECLARE_STATS_COUNTER(alloced_io_mem);
DECLARE_STATS_COUNTER(total_map_requests);
+DECLARE_STATS_COUNTER(complete_ppr);
+DECLARE_STATS_COUNTER(invalidate_iotlb);
+DECLARE_STATS_COUNTER(invalidate_iotlb_all);
+DECLARE_STATS_COUNTER(pri_requests);
+
static struct dentry *stats_dir;
static struct dentry *de_fflush;
@@ -393,6 +398,10 @@ static void amd_iommu_stats_init(void)
amd_iommu_stats_add(&domain_flush_all);
amd_iommu_stats_add(&alloced_io_mem);
amd_iommu_stats_add(&total_map_requests);
+ amd_iommu_stats_add(&complete_ppr);
+ amd_iommu_stats_add(&invalidate_iotlb);
+ amd_iommu_stats_add(&invalidate_iotlb_all);
+ amd_iommu_stats_add(&pri_requests);
}
#endif
@@ -509,6 +518,8 @@ static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u32 head)
volatile u64 *raw;
int i;
+ INC_STATS_COUNTER(pri_requests);
+
raw = (u64 *)(iommu->ppr_log + head);
/*
@@ -3356,6 +3367,8 @@ out:
static int __amd_iommu_flush_page(struct protection_domain *domain, int pasid,
u64 address)
{
+ INC_STATS_COUNTER(invalidate_iotlb);
+
return __flush_pasid(domain, pasid, address, false);
}
@@ -3376,6 +3389,8 @@ EXPORT_SYMBOL(amd_iommu_flush_page);
static int __amd_iommu_flush_tlb(struct protection_domain *domain, int pasid)
{
+ INC_STATS_COUNTER(invalidate_iotlb_all);
+
return __flush_pasid(domain, pasid, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
true);
}
@@ -3495,6 +3510,8 @@ int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid,
struct amd_iommu *iommu;
struct iommu_cmd cmd;
+ INC_STATS_COUNTER(complete_ppr);
+
dev_data = get_dev_data(&pdev->dev);
iommu = amd_iommu_rlookup_table[dev_data->devid];
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