sh: Provide diagnostic kernel stack checks

[safe/jmp/linux-2.6] / arch / sh / Kconfig.debug

diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index fdb0493..52a132c 100644 (file)
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -38,10 +38,11 @@ config EARLY_SCIF_CONSOLE_PORT
        default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \
                                CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366 || \
                                CPU_SUBTYPE_SH7343
-       default "0xffe80000" if CPU_SH4
        default "0xffea0000" if CPU_SUBTYPE_SH7785
+       default "0xffeb0000" if CPU_SUBTYPE_SH7786
        default "0xfffe8000" if CPU_SUBTYPE_SH7203
        default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263
+       default "0xffe80000" if CPU_SH4
        default "0x00000000"
 
 config EARLY_PRINTK
@@ -60,10 +61,6 @@ config EARLY_PRINTK
          select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
          the kernel command line option to toggle back and forth.
 
-config DEBUG_BOOTMEM
-       depends on DEBUG_KERNEL
-       bool "Debug BOOTMEM initialization"
-
 config DEBUG_STACKOVERFLOW
        bool "Check for stack overflows"
        depends on DEBUG_KERNEL && SUPERH32
@@ -122,27 +119,19 @@ config SH_NO_BSS_INIT
          For all other cases, say N. If this option seems perplexing, or
          you aren't sure, say N.
 
-config MORE_COMPILE_OPTIONS
-       bool "Add any additional compile options"
-       help
-         If you want to add additional CFLAGS to the kernel build, enable this
-         option and then enter what you would like to add in the next question.
-         Note however that -g is already appended with the selection of KGDB.
-
-config COMPILE_OPTIONS
-       string "Additional compile arguments"
-       depends on MORE_COMPILE_OPTIONS
-
 config SH64_SR_WATCH
        bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
        depends on SUPERH64
 
-config POOR_MANS_STRACE
-       bool "Debug: enable rudimentary strace facility"
-       depends on SUPERH64
+config STACK_DEBUG
+       bool "Enable diagnostic checks of the kernel stack"
+       depends on FUNCTION_TRACER
+       select DEBUG_STACKOVERFLOW
+       default n
        help
-         This option allows system calls to be traced to the console.  It also
-         aids in detecting kernel stack underflow.  It is useful for debugging
-         early-userland problems (e.g. init incurring fatal exceptions.)
+         This option allows checks to be performed on the kernel stack
+         at runtime. Saying Y here will add overhead to every function
+         call and will therefore incur a major performance hit. Most
+         users should say N.
 
 endmenu