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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-22 14:15:49 +0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-28 19:55:33 +0400 |
| commit | 2be69c79e9a46a554fc3ff57d886e65e7a73eb72 (patch) | |
| tree | a92fc93820dfab857090602522cc67bf86ef8770 /arch/x86 | |
| parent | b3b99ef8b4f80f3f093a72110e7697c2281ae45d (diff) | |
| download | linux-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')
| -rw-r--r-- | arch/x86/Kconfig.debug | 8 |
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 |