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Commit 399be2f5 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Add stat counter for IOMMUv2 events 



Add some interesting statistic counters for events when
IOMMUv2 is active.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 6a113ddc

drivers/iommu/amd_iommu.c

+17 −0
Original line number Diff line number Diff line
@@ -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 @@ static int __flush_pasid(struct protection_domain *domain, int pasid, 
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];