From: Joerg Roedel <joerg.roedel@amd.com>
Date: Thu, 11 Dec 2008 18:00:12 +0000 (+0100)
Subject: AMD IOMMU: add Kconfig entry for statistic collection code
X-Git-Tag: v2.6.29-rc1~522^2~1^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2e117604a4e8f3f9cee4aec3373b0382159e152a;p=profile%2Fivi%2Fkernel-x86-ivi.git

AMD IOMMU: add Kconfig entry for statistic collection code

Impact: adds new Kconfig entry

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

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 249d1e0..f9998d2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -586,6 +586,16 @@ config AMD_IOMMU
 	  your BIOS for an option to enable it or if you have an IVRS ACPI
 	  table.
 
+config AMD_IOMMU_STATS
+	bool "Export AMD IOMMU statistics to debugfs"
+	depends on AMD_IOMMU
+	select DEBUG_FS
+	help
+	  This option enables code in the AMD IOMMU driver to collect various
+	  statistics about whats happening in the driver and exports that
+	  information to userspace via debugfs.
+	  If unsure, say N.
+
 # need this always selected by IOMMU for the VIA workaround
 config SWIOTLB
 	def_bool y if X86_64