Eric Lee / linux-smarc-t335x-v3.2

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Commit 18811f55d48e5f3ee70c4744c592f940022fa592

Authored by Joerg Roedel
1 parent f57d98ae69
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

AMD IOMMU: add stats counter for domain tlb flushes 

Impact: see number of domain tlb flushes in debugfs

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

Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff

arch/x86/kernel/amd_iommu.c
Diff comments   View file @ 18811f5
... ... @@ -73,6 +73,7 @@
73 73 DECLARE_STATS_COUNTER(cnt_free_coherent);
74 74 DECLARE_STATS_COUNTER(cross_page);
75 75 DECLARE_STATS_COUNTER(domain_flush_single);
  76 +DECLARE_STATS_COUNTER(domain_flush_all);
76 77  
77 78 static struct dentry *stats_dir;
78 79 static struct dentry *de_isolate;
... ... @@ -108,6 +109,7 @@
108 109 amd_iommu_stats_add(&cnt_free_coherent);
109 110 amd_iommu_stats_add(&cross_page);
110 111 amd_iommu_stats_add(&domain_flush_single);
  112 + amd_iommu_stats_add(&domain_flush_all);
111 113 }
112 114  
113 115 #endif
... ... @@ -430,6 +432,8 @@
430 432 unsigned long flags;
431 433 struct amd_iommu *iommu;
432 434 struct iommu_cmd cmd;
  435 +
  436 + INC_STATS_COUNTER(domain_flush_all);
433 437  
434 438 __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
435 439 domid, 1, 1);