AMD IOMMU: add stats counter for single iommu domain tlb flushes
Impact: see number of single iommu domain tlb flushes in debugfs Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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1 changed files with 4 additions and 0 deletions
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@ -72,6 +72,7 @@ DECLARE_STATS_COUNTER(cnt_unmap_sg);
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DECLARE_STATS_COUNTER(cnt_alloc_coherent);
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DECLARE_STATS_COUNTER(cnt_free_coherent);
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DECLARE_STATS_COUNTER(cross_page);
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DECLARE_STATS_COUNTER(domain_flush_single);
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static struct dentry *stats_dir;
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static struct dentry *de_isolate;
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@ -106,6 +107,7 @@ static void amd_iommu_stats_init(void)
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amd_iommu_stats_add(&cnt_alloc_coherent);
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amd_iommu_stats_add(&cnt_free_coherent);
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amd_iommu_stats_add(&cross_page);
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amd_iommu_stats_add(&domain_flush_single);
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}
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#endif
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@ -413,6 +415,8 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid)
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{
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u64 address = CMD_INV_IOMMU_ALL_PAGES_ADDRESS;
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INC_STATS_COUNTER(domain_flush_single);
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iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1);
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}
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