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| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-01 16:53:47 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-12 15:19:06 +0100 |
| commit | 399be2f51979aaf4e3391d98d11e3aeaac7633a4 (patch) | |
| tree | bcc956e6e6f6766a4d5480e9b582c31f1a35f70a /drivers/iommu/amd_iommu.c | |
| parent | 6a113ddc03bcc32d3d440dce42b445868d5be093 (diff) | |
| download | linux-next-399be2f51979aaf4e3391d98d11e3aeaac7633a4.tar.gz | |
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/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 17 |
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]; |