fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / sh / Kconfig.debug

diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 8fb31ab..87902e0 100644 (file)
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -1,5 +1,9 @@
 menu "Kernel hacking"
 
+config TRACE_IRQFLAGS_SUPPORT
+       bool
+       default y
+
 source "lib/Kconfig.debug"
 
 config SH_STANDARD_BIOS
@@ -17,7 +21,19 @@ config SH_STANDARD_BIOS
 
 config EARLY_SCIF_CONSOLE
        bool "Use early SCIF console"
-       depends on CPU_SH4 || CPU_SH2A && !SH_STANDARD_BIOS
+       help
+         This enables an early console using a fixed SCIF port. This can
+         be used by platforms that are either not running the SH
+         standard BIOS, or do not wish to use the BIOS callbacks for the
+         serial I/O.
+
+config EARLY_SCIF_CONSOLE_PORT
+       hex "SCIF port for early console"
+       depends on EARLY_SCIF_CONSOLE
+       default "0xffe00000" if CPU_SUBTYPE_SH7780
+       default "0xfffe9800" if CPU_SUBTYPE_SH7206
+       default "0xf8420000" if CPU_SUBTYPE_SH7619
+       default "0xffe80000" if CPU_SH4
 
 config EARLY_PRINTK
        bool "Early printk support"
@@ -30,8 +46,40 @@ config EARLY_PRINTK
          when the kernel may crash or hang before the serial console is
          initialised. If unsure, say N.
 
+         On devices that are running SH-IPL and want to keep the port
+         initialization consistent while not using the BIOS callbacks,
+         select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
+         the kernel command line option to toggle back and forth.
+
+config DEBUG_STACKOVERFLOW
+       bool "Check for stack overflows"
+       depends on DEBUG_KERNEL
+       help
+         This option will cause messages to be printed if free stack space
+         drops below a certain limit.
+
+config DEBUG_STACK_USAGE
+       bool "Stack utilization instrumentation"
+       depends on DEBUG_KERNEL
+       help
+         Enables the display of the minimum amount of free stack which each
+         task has ever had available in the sysrq-T and sysrq-P debug output.
+
+         This option will slow down process creation somewhat.
+
+config 4KSTACKS
+       bool "Use 4Kb for kernel stacks instead of 8Kb"
+       depends on DEBUG_KERNEL
+       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. This option
+         will also use IRQ stacks to compensate for the reduced stackspace.
+
 config KGDB
        bool "Include KGDB kernel debugger"
+       select FRAME_POINTER
        help
          Include in-kernel hooks for kgdb, the Linux kernel source level
          debugger.  See <http://kgdb.sourceforge.net/> for more information.
@@ -112,13 +160,4 @@ endchoice
 
 endmenu
 
-config FRAME_POINTER
-       bool "Compile the kernel with frame pointers"
-       default y if KGDB
-       help
-         If you say Y here the resulting kernel image will be slightly larger
-         and slower, but it will give very useful debugging information.
-         If you don't debug the kernel, you can say N, but we may not be able
-         to solve problems without frame pointers.
-
 endmenu