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authorChristoph Hellwig <hch@lst.de>2010-06-28 14:16:14 +0200
committerThomas Gleixner <tglx@linutronix.de>2010-06-29 12:12:59 +0200
commitdcfa726280116dd31adad37da940f542663567d0 (patch)
tree93d59c5a3d548d0d6598e3ff2a8dc96c5f0b7b53 /arch/x86
parent7974891db234467eaf1fec613ec0129cb4ac2332 (diff)
x86: Remove CONFIG_4KSTACKS
These days 4 kilobytes of stack just aren't enough for reliably operation, and people using lots of threads have long switched to 64-bit kernels, so remove the CONFIG_4KSTACKS option. Signed-off-by: Christoph Hellwig <hch@lst.de> LKML-Reference: <20100628121614.GB6605@lst.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig.debug9
-rw-r--r--arch/x86/include/asm/module.h7
-rw-r--r--arch/x86/include/asm/page_32_types.h4
3 files changed, 1 insertions, 19 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index badda8e20e78..7f1530838bc8 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -121,15 +121,6 @@ config DEBUG_NX_TEST
and the software setup of this feature.
If in doubt, say "N"
-config 4KSTACKS
- bool "Use 4Kb for kernel stacks instead of 8Kb"
- depends on X86_32
- ---help---
- If you say Y here the kernel will use a 4Kb stacksize for the
- kernel stack attached to each process/thread. This facilitates
- running more threads on a system and also reduces the pressure
- on the VM subsystem for higher order allocations.
-
config DOUBLEFAULT
default y
bool "Enable doublefault exception handler" if EMBEDDED
diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
index 3e2ce58a31a3..67763c5d8b4e 100644
--- a/arch/x86/include/asm/module.h
+++ b/arch/x86/include/asm/module.h
@@ -60,12 +60,7 @@
#endif
#ifdef CONFIG_X86_32
-# ifdef CONFIG_4KSTACKS
-# define MODULE_STACKSIZE "4KSTACKS "
-# else
-# define MODULE_STACKSIZE ""
-# endif
-# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE
+# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
#endif
#endif /* _ASM_X86_MODULE_H */
diff --git a/arch/x86/include/asm/page_32_types.h b/arch/x86/include/asm/page_32_types.h
index 6f1b7331313f..ade619ff9e2a 100644
--- a/arch/x86/include/asm/page_32_types.h
+++ b/arch/x86/include/asm/page_32_types.h
@@ -15,11 +15,7 @@
*/
#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
-#ifdef CONFIG_4KSTACKS
-#define THREAD_ORDER 0
-#else
#define THREAD_ORDER 1
-#endif
#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
#define STACKFAULT_STACK 0