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authorJoerg Roedel <joerg.roedel@amd.com>2009-05-22 14:15:49 +0400
committerJoerg Roedel <joerg.roedel@amd.com>2009-05-28 19:55:33 +0400
commit2be69c79e9a46a554fc3ff57d886e65e7a73eb72 (patch)
treea92fc93820dfab857090602522cc67bf86ef8770 /arch/x86/Kconfig.debug
parentb3b99ef8b4f80f3f093a72110e7697c2281ae45d (diff)
downloadlinux-2be69c79e9a46a554fc3ff57d886e65e7a73eb72.tar.xz
x86/iommu: add IOMMU_STRESS Kconfig entry
This Kconfig option is intended to enable various code paths or parameters in IOMMU implementations to stress test the code and/or the hardware. This can also be done by disabling optimizations in the code when this option is switched on. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Diffstat (limited to 'arch/x86/Kconfig.debug')
-rw-r--r--arch/x86/Kconfig.debug8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 5865712d105d..33fac6bbe1c2 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -159,6 +159,14 @@ config IOMMU_DEBUG
options. See Documentation/x86_64/boot-options.txt for more
details.
+config IOMMU_STRESS
+ bool "Enable IOMMU stress-test mode"
+ ---help---
+ This option disables various optimizations in IOMMU related
+ code to do real stress testing of the IOMMU code. This option
+ will cause a performance drop and should only be enabled for
+ testing.
+
config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on IOMMU_DEBUG && DMA_API_DEBUG