mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-24 01:41:39 +00:00
Code Issues Releases Wiki Activity

iommu/amd: Add stat counter for IOMMUv2 events

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

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2011-12-01 16:53:47 +01:00
parent 6a113ddc03
commit 399be2f519
1 changed files with 17 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/iommu/amd_iommu.c
View file

@ -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];