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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-12 15:46:29 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:59 +0100 |
| commit | f57d98ae6979f7bcbf758023b4716f485385f903 (patch) | |
| tree | d49ddb1732237a69e871691d020db3f0b8a20788 /arch/x86/kernel/amd_iommu.c | |
| parent | c1858976f5ef05122bb671f678beaf7e1fe1dd74 (diff) | |
| download | lwn-f57d98ae6979f7bcbf758023b4716f485385f903.tar.gz lwn-f57d98ae6979f7bcbf758023b4716f485385f903.zip | |
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>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
| -rw-r--r-- | 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 f5455039b609..e99022d3a394 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -72,6 +72,7 @@ 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; @@ -106,6 +107,7 @@ 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 @@ -413,6 +415,8 @@ 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); } |