From: Joerg Roedel <joerg.roedel@amd.com>
Date: Fri, 12 Dec 2008 14:48:28 +0000 (+0100)
Subject: AMD IOMMU: add stats counter for domain tlb flushes
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=18811f55d48e5f3ee70c4744c592f940022fa592;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

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>
---

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index e99022d3a394..a897c7246dca 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -73,6 +73,7 @@ DECLARE_STATS_COUNTER(cnt_alloc_coherent);
 DECLARE_STATS_COUNTER(cnt_free_coherent);
 DECLARE_STATS_COUNTER(cross_page);
 DECLARE_STATS_COUNTER(domain_flush_single);
+DECLARE_STATS_COUNTER(domain_flush_all);
 
 static struct dentry *stats_dir;
 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(&cross_page);
 	amd_iommu_stats_add(&domain_flush_single);
+	amd_iommu_stats_add(&domain_flush_all);
 }
 
 #endif
@@ -431,6 +433,8 @@ static void iommu_flush_domain(u16 domid)
 	struct amd_iommu *iommu;
 	struct iommu_cmd cmd;
 
+	INC_STATS_COUNTER(domain_flush_all);
+
 	__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
 				      domid, 1, 1);