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Message-ID: <1229350685-3816-21-git-send-email-joerg.roedel@amd.com>
Date: Mon, 15 Dec 2008 15:18:03 +0100
From: Joerg Roedel <joerg.roedel@....com>
To: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
CC: Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 20/22] 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@....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 8490a06..be6d107 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -72,6 +72,7 @@ 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;
@@ -107,6 +108,7 @@ 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
@@ -430,6 +432,8 @@ 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);
--
1.5.6.4
--
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