[tip:x86/cleanups] x86: Remove unused IOMMU_STRESS Kconfig

[tip-bot for Corentin Labbe]

Commit-ID:  782bf20c2a1795f35dcd526aa8005cd1870745da
Gitweb:     https://git.kernel.org/tip/782bf20c2a1795f35dcd526aa8005cd1870745da
Author:     Corentin Labbe <clabbe@xxxxxxxxxxxx>
AuthorDate: Wed, 24 Jan 2018 20:29:14 +0000
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 25 Jan 2018 10:22:12 +0100

x86: Remove unused IOMMU_STRESS Kconfig

Last use of IOMMU_STRESS was removed in commit 29b68415e335 ("x86:
amd_iommu: move to drivers/iommu/"). 6 years later the Kconfig entry is
definitely due for removal.

Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Acked-by: Joerg Roedel <jroedel@xxxxxxx>
Link: https://lkml.kernel.org/r/1516825754-28415-1-git-send-email-clabbe@xxxxxxxxxxxx

---
 arch/x86/Kconfig.debug | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 6293a87..49fb85a 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -169,14 +169,6 @@ config IOMMU_DEBUG
 	  options. See Documentation/x86/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