This commit was manufactured by cvs2svn to create tag

[linux-2.6.git] / arch / i386 / Kconfig

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 15b003b..5922c84 100644 (file)
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -926,6 +926,57 @@ config REGPARM
        generate incorrect output with certain kernel constructs when
        -mregparm=3 is used.
 
+config IRQSTACKS
+       bool "Use separate IRQ stacks"
+       help
+       If you say Y here the kernel will use a separate IRQ stack on each
+       cpu to handle interrupts.
+
+config STACK_SIZE_SHIFT
+       int "Kernel stack size (12 => 4KB, 13 => 8KB, 14 => 16KB)"
+       range 12 14
+       default 12 if IRQSTACKS
+       default 13
+       help
+       Select kernel stack size.  4KB stacks are best as they let
+       the system scale further.  Use 8KB stacks if you have an 
+       experimental kernel where a stack overlow with a 4KB stack
+       might occur.  Use 16KB stacks if you want to safely support
+       Windows device drivers using either Linuxant or ndiswrapper.
+
+config STACK_WARN
+       int "Print stack trace when stack grows beyond specified bytes"
+       default 4096 if IRQSTACKS
+       default 4096
+       help
+       The kernel will print a stack trace when the current stack exceeds
+       the specified size.
+
+config X86_STACK_CHECK
+       bool "Check for stack overflows"
+       default n
+       help
+       Say Y here to have the kernel attempt to detect when the per-task
+       kernel stack overflows.
+
+       Some older versions of gcc don't handle the -p option correctly.
+       Kernprof is affected by the same problem, which is described here:
+       http://oss.sgi.com/projects/kernprof/faq.html#Q9
+
+       Basically, if you get oopses in __free_pages_ok during boot when
+       you have this turned on, you need to fix gcc. The Redhat 2.96
+       version and gcc-3.x seem to work.
+
+       If not debugging a stack overflow problem, say N
+
+config STACK_PANIC
+       int "Panic when stack approaches with specified bytes of the stack limit"
+       depends on X86_STACK_CHECK
+       default 512 if IRQSTACKS
+       default 512
+       help
+       Panic if the stack grows to within specified byte range.
+
 endmenu