tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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AMD IOMMU: add statistics about total number of map requests

Impact: see total number of map requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

Joerg Roedel 8ecaf8f1 5774f7c5

+4
unified split
+4
arch/x86/kernel/amd_iommu.c
··· 75 DECLARE_STATS_COUNTER(domain_flush_single); 76 DECLARE_STATS_COUNTER(domain_flush_all); 77 DECLARE_STATS_COUNTER(alloced_io_mem); 78 79 static struct dentry *stats_dir; 80 static struct dentry *de_isolate; ··· 113 amd_iommu_stats_add(&domain_flush_single); 114 amd_iommu_stats_add(&domain_flush_all); 115 amd_iommu_stats_add(&alloced_io_mem); 116 } 117 118 #endif ··· 1230 1231 pages = iommu_num_pages(paddr, size, PAGE_SIZE); 1232 paddr &= PAGE_MASK; 1233 1234 if (pages > 1) 1235 INC_STATS_COUNTER(cross_page);
··· 75 DECLARE_STATS_COUNTER(domain_flush_single); 76 DECLARE_STATS_COUNTER(domain_flush_all); 77 DECLARE_STATS_COUNTER(alloced_io_mem); 78 + DECLARE_STATS_COUNTER(total_map_requests); 79 80 static struct dentry *stats_dir; 81 static struct dentry *de_isolate; ··· 112 amd_iommu_stats_add(&domain_flush_single); 113 amd_iommu_stats_add(&domain_flush_all); 114 amd_iommu_stats_add(&alloced_io_mem); 115 + amd_iommu_stats_add(&total_map_requests); 116 } 117 118 #endif ··· 1228 1229 pages = iommu_num_pages(paddr, size, PAGE_SIZE); 1230 paddr &= PAGE_MASK; 1231 + 1232 + INC_STATS_COUNTER(total_map_requests); 1233 1234 if (pages > 1) 1235 INC_STATS_COUNTER(cross_page);