powerpc: Keep xtime and gettimeofday in sync

[linux-2.6-omap-h63xx.git] / arch / powerpc / Kconfig.debug

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 61653cb60c4e3f01f294f0dd04301446d5049a1d..9254806f70326502f203b13cdcb3f580d7ad9a7d 100644 (file)
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -2,9 +2,32 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
+config DEBUG_STACKOVERFLOW
+       bool "Check for stack overflows"
+       depends on DEBUG_KERNEL && PPC64
+       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 && PPC64
+       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 DEBUGGER
+       bool "Enable debugger hooks"
+       depends on DEBUG_KERNEL
+       help
+         Include in-kernel hooks for kernel debuggers. Unless you are
+         intending to debug the kernel, say N here.
+
 config KGDB
        bool "Include kgdb kernel debugger"
-       depends on DEBUG_KERNEL && (BROKEN || PPC_GEN550 || 4xx)
+       depends on DEBUGGER && (BROKEN || PPC_GEN550 || 4xx)
        select DEBUG_INFO
        help
          Include in-kernel hooks for kgdb, the Linux kernel source level
@@ -40,14 +63,36 @@ config KGDB_CONSOLE
 
 config XMON
        bool "Include xmon kernel debugger"
-       depends on DEBUG_KERNEL
+       depends on DEBUGGER && !PPC_ISERIES
        help
          Include in-kernel hooks for the xmon kernel monitor/debugger.
          Unless you are intending to debug the kernel, say N here.
+         Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
+         nothing will appear on the screen (xmon writes directly to the
+         framebuffer memory).
+         The cmdline option 'xmon' or 'xmon=early' will drop into xmon
+         very early during boot. 'xmon=on' will just enable the xmon
+         debugger hooks.  'xmon=off' will disable the debugger hooks
+         if CONFIG_XMON_DEFAULT is set.
+
+config XMON_DEFAULT
+       bool "Enable xmon by default"
+       depends on XMON
+       help
+         xmon is normally disabled unless booted with 'xmon=on'.
+         Use 'xmon=off' to disable xmon init during runtime.
+
+config IRQSTACKS
+       bool "Use separate kernel stacks when processing interrupts"
+       depends on PPC64
+       help
+         If you say Y here the kernel will use separate kernel stacks
+         for handling hard and soft interrupts.  This can help avoid
+         overflowing the process kernel stacks.
 
 config BDI_SWITCH
        bool "Include BDI-2000 user context switcher"
-       depends on DEBUG_KERNEL
+       depends on DEBUG_KERNEL && PPC32
        help
          Include in-kernel support for the Abatron BDI2000 debugger.
          Unless you are intending to debug the kernel with one of these
@@ -55,7 +100,7 @@ config BDI_SWITCH
 
 config BOOTX_TEXT
        bool "Support for early boot text console (BootX or OpenFirmware only)"
-       depends PPC_OF
+       depends PPC_OF && !PPC_ISERIES
        help
          Say Y here to see progress messages from the boot firmware in text
          mode. Requires either BootX or Open Firmware.
@@ -70,4 +115,46 @@ config PPC_OCP
        depends on IBM_OCP || XILINX_OCP
        default y
 
+choice
+       prompt "Early debugging (dangerous)"
+       bool
+       optional
+       help
+         Enable early debugging. Careful, if you enable debugging for the
+         wrong type of machine your kernel _will not boot_.
+
+config PPC_EARLY_DEBUG_LPAR
+       bool "LPAR HV Console"
+       depends on PPC_PSERIES
+       help
+         Select this to enable early debugging for a machine with a HVC
+         console on vterm 0.
+
+config PPC_EARLY_DEBUG_G5
+       bool "Apple G5"
+       depends on PPC_PMAC64
+       help
+         Select this to enable early debugging for Apple G5 machines.
+
+config PPC_EARLY_DEBUG_RTAS
+       bool "RTAS Panel"
+       depends on PPC_RTAS
+       help
+         Select this to enable early debugging via the RTAS panel.
+
+config PPC_EARLY_DEBUG_MAPLE
+       bool "Maple real mode"
+       depends on PPC_MAPLE
+       help
+         Select this to enable early debugging for Maple.
+
+config PPC_EARLY_DEBUG_ISERIES
+       bool "iSeries HV Console"
+       depends on PPC_ISERIES
+       help
+         Select this to enable early debugging for legacy iSeries. You need
+         to hit "Ctrl-x Ctrl-x" to see the messages on the console.
+
+endchoice
+
 endmenu