Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 19/22] AMD IOMMU: add stats counter for single iommu domain tlb flushes | Date | Mon, 15 Dec 2008 15:18:02 +0100 |
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Impact: see number of single iommu domain tlb flushes in debugfs
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kernel/amd_iommu.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 02e8c18..8490a06 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -71,6 +71,7 @@ DECLARE_STATS_COUNTER(cnt_unmap_sg); DECLARE_STATS_COUNTER(cnt_alloc_coherent); DECLARE_STATS_COUNTER(cnt_free_coherent); DECLARE_STATS_COUNTER(cross_page); +DECLARE_STATS_COUNTER(domain_flush_single); static struct dentry *stats_dir; static struct dentry *de_isolate; @@ -105,6 +106,7 @@ static void amd_iommu_stats_init(void) amd_iommu_stats_add(&cnt_alloc_coherent); amd_iommu_stats_add(&cnt_free_coherent); amd_iommu_stats_add(&cross_page); + amd_iommu_stats_add(&domain_flush_single); } #endif @@ -412,6 +414,8 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid) { u64 address = CMD_INV_IOMMU_ALL_PAGES_ADDRESS; + INC_STATS_COUNTER(domain_flush_single); + iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1); } -- 1.5.6.4
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