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Commit 18811f55 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

AMD IOMMU: add stats counter for domain tlb flushes 



Impact: see number of domain tlb flushes in debugfs

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent f57d98ae

arch/x86/kernel/amd_iommu.c

+4 −0
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ DECLARE_STATS_COUNTER(cnt_alloc_coherent); 
DECLARE_STATS_COUNTER(cnt_free_coherent);

DECLARE_STATS_COUNTER(cross_page);

DECLARE_STATS_COUNTER(domain_flush_single);

DECLARE_STATS_COUNTER(domain_flush_all);



static struct dentry *stats_dir;

static struct dentry *de_isolate;
@@ -108,6 +109,7 @@ static void amd_iommu_stats_init(void) 
	amd_iommu_stats_add(&cnt_free_coherent);

	amd_iommu_stats_add(&cross_page);

	amd_iommu_stats_add(&domain_flush_single);

	amd_iommu_stats_add(&domain_flush_all);

}



#endif
@@ -431,6 +433,8 @@ static void iommu_flush_domain(u16 domid) 
	struct amd_iommu *iommu;

	struct iommu_cmd cmd;



	INC_STATS_COUNTER(domain_flush_all);



	__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,

				      domid, 1, 1);