arch/mips/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 config TRACE_IRQFLAGS_SUPPORT
   4         bool
   5         default y
   6
   7 source "lib/Kconfig.debug"
   8
   9 config EARLY_PRINTK
  10         bool "Early printk" if EXPERT
  11         depends on SYS_HAS_EARLY_PRINTK
  12         default y
  13         help
  14           This option enables special console drivers which allow the kernel
  15           to print messages very early in the bootup process.
  16
  17           This is useful for kernel debugging when your machine crashes very
  18           early before the console code is initialized. For normal operation,
  19           it is not recommended because it looks ugly on some machines and
  20           doesn't cooperate with an X server. You should normally say N here,
  21           unless you want to debug such a crash.
  22
  23 config CMDLINE_BOOL
  24         bool "Built-in kernel command line"
  25         default n
  26         help
  27           For most systems, it is firmware or second stage bootloader that
  28           by default specifies the kernel command line options.  However,
  29           it might be necessary or advantageous to either override the
  30           default kernel command line or add a few extra options to it.
  31           For such cases, this option allows you to hardcode your own
  32           command line options directly into the kernel.  For that, you
  33           should choose 'Y' here, and fill in the extra boot arguments
  34           in CONFIG_CMDLINE.
  35
  36           The built-in options will be concatenated to the default command
  37           line if CMDLINE_OVERRIDE is set to 'N'. Otherwise, the default
  38           command line will be ignored and replaced by the built-in string.
  39
  40           Most MIPS systems will normally expect 'N' here and rely upon
  41           the command line from the firmware or the second-stage bootloader.
  42
  43 config CMDLINE
  44         string "Default kernel command string"
  45         depends on CMDLINE_BOOL
  46         default ""
  47         help
  48           On some platforms, there is currently no way for the boot loader to
  49           pass arguments to the kernel.  For these platforms, and for the cases
  50           when you want to add some extra options to the command line or ignore
  51           the default command line, you can supply some command-line options at
  52           build time by entering them here.  In other cases you can specify
  53           kernel args so that you don't have to set them up in board prom
  54           initialization routines.
  55
  56           For more information, see the CMDLINE_BOOL and CMDLINE_OVERRIDE
  57           options.
  58
  59 config CMDLINE_OVERRIDE
  60         bool "Built-in command line overrides firmware arguments"
  61         default n
  62         depends on CMDLINE_BOOL
  63         help
  64           By setting this option to 'Y' you will have your kernel ignore
  65           command line arguments from firmware or second stage bootloader.
  66           Instead, the built-in command line will be used exclusively.
  67
  68           Normally, you will choose 'N' here.
  69
  70 config DEBUG_STACKOVERFLOW
  71         bool "Check for stack overflows"
  72         depends on DEBUG_KERNEL
  73         help
  74           This option will cause messages to be printed if free stack space
  75           drops below a certain limit(2GB on MIPS). The debugging option
  76           provides another way to check stack overflow happened on kernel mode
  77           stack usually caused by nested interruption.
  78
  79 config SMTC_IDLE_HOOK_DEBUG
  80         bool "Enable additional debug checks before going into CPU idle loop"
  81         depends on DEBUG_KERNEL && MIPS_MT_SMTC
  82         help
  83           This option enables Enable additional debug checks before going into
  84           CPU idle loop.  For details on these checks, see
  85           arch/mips/kernel/smtc.c.  This debugging option result in significant
  86           overhead so should be disabled in production kernels.
  87
  88 config SB1XXX_CORELIS
  89         bool "Corelis Debugger"
  90         depends on SIBYTE_SB1xxx_SOC
  91         select DEBUG_INFO
  92         help
  93           Select compile flags that produce code that can be processed by the
  94           Corelis mksym utility and UDB Emulator.
  95
  96 config RUNTIME_DEBUG
  97         bool "Enable run-time debugging"
  98         depends on DEBUG_KERNEL
  99         help
 100           If you say Y here, some debugging macros will do run-time checking.
 101           If you say N here, those macros will mostly turn to no-ops.  See
 102           arch/mips/include/asm/debug.h for debugging macros.
 103           If unsure, say N.
 104
 105 config DEBUG_ZBOOT
 106         bool "Enable compressed kernel support debugging"
 107         depends on DEBUG_KERNEL && SYS_SUPPORTS_ZBOOT
 108         default n
 109         help
 110           If you want to add compressed kernel support to a new board, and the
 111           board supports uart16550 compatible serial port, please select
 112           SYS_SUPPORTS_ZBOOT_UART16550 for your board and enable this option to
 113           debug it.
 114
 115           If your board doesn't support uart16550 compatible serial port, you
 116           can try to select SYS_SUPPORTS_ZBOOT and use the other methods to
 117           debug it. for example, add a new serial port support just as
 118           arch/mips/boot/compressed/uart-16550.c does.
 119
 120           After the compressed kernel support works, please disable this option
 121           to reduce the kernel image size and speed up the booting procedure a
 122           little.
 123
 124 config SPINLOCK_TEST
 125         bool "Enable spinlock timing tests in debugfs"
 126         depends on DEBUG_FS
 127         default n
 128         help
 129           Add several files to the debugfs to test spinlock speed.
 130
 131 endmenu