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AMD IOMMU: add stats counter for domain tlb flushes

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Impact: see number of domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2008-12-12 15:48:28 +01:00
parent f57d98ae69
commit 18811f55d4
1 changed files with 4 additions and 0 deletions
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4
arch/x86/kernel/amd_iommu.c
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@ -73,6 +73,7 @@ DECLARE_STATS_COUNTER(cnt_alloc_coherent);
DECLARE_STATS_COUNTER(cnt_free_coherent); DECLARE_STATS_COUNTER(cnt_free_coherent);
DECLARE_STATS_COUNTER(cross_page); DECLARE_STATS_COUNTER(cross_page);
DECLARE_STATS_COUNTER(domain_flush_single); DECLARE_STATS_COUNTER(domain_flush_single);
DECLARE_STATS_COUNTER(domain_flush_all);
static struct dentry *stats_dir; static struct dentry *stats_dir;
static struct dentry *de_isolate; 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(&cnt_free_coherent);
amd_iommu_stats_add(&cross_page); amd_iommu_stats_add(&cross_page);
amd_iommu_stats_add(&domain_flush_single); amd_iommu_stats_add(&domain_flush_single);
amd_iommu_stats_add(&domain_flush_all);
} }
#endif #endif
@ -431,6 +433,8 @@ static void iommu_flush_domain(u16 domid)
struct amd_iommu *iommu; struct amd_iommu *iommu;
struct iommu_cmd cmd; struct iommu_cmd cmd;
INC_STATS_COUNTER(domain_flush_all);
__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS, __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
domid, 1, 1); domid, 1, 1);