diff options
Diffstat (limited to 'arch/sh/Kconfig.debug')
| -rw-r--r-- | arch/sh/Kconfig.debug | 153 |
1 files changed, 60 insertions, 93 deletions
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug index 3fab181da36..5f2bb4242c0 100644 --- a/arch/sh/Kconfig.debug +++ b/arch/sh/Kconfig.debug @@ -1,9 +1,13 @@ menu "Kernel hacking" +config TRACE_IRQFLAGS_SUPPORT + def_bool y + source "lib/Kconfig.debug" config SH_STANDARD_BIOS bool "Use LinuxSH standard BIOS" + depends on SUPERH32 help Say Y here if your target has the gdb-sh-stub package from www.m17n.org (or any conforming standard LinuxSH BIOS) @@ -15,110 +19,73 @@ config SH_STANDARD_BIOS mask ROM and no flash (WindowsCE machines fall in this category). If unsure, say N. -config EARLY_SCIF_CONSOLE - bool "Use early SCIF console" - depends on CPU_SH4 - -config EARLY_PRINTK - bool "Early printk support" - depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE +config STACK_DEBUG + bool "Check for stack overflows" + depends on DEBUG_KERNEL && SUPERH32 help - Say Y here to redirect kernel printk messages to the serial port - used by the SH-IPL bootloader, starting very early in the boot - process and ending when the kernel's serial console is initialised. - This option is only useful porting the kernel to a new machine, - when the kernel may crash or hang before the serial console is - initialised. If unsure, say N. - -config KGDB - bool "Include KGDB kernel debugger" + This option will cause messages to be printed if free stack space + drops below a certain limit. Saying Y here will add overhead to + every function call and will therefore incur a major + performance hit. Most users should say N. + +config 4KSTACKS + bool "Use 4Kb for kernel stacks instead of 8Kb" + depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB help - Include in-kernel hooks for kgdb, the Linux kernel source level - debugger. See <http://kgdb.sourceforge.net/> for more information. - Unless you are intending to debug the kernel, say N here. - -menu "KGDB configuration options" - depends on KGDB - -config MORE_COMPILE_OPTIONS - bool "Add any additional compile options" + 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 IRQSTACKS + bool "Use separate kernel stacks when processing interrupts" + depends on DEBUG_KERNEL && SUPERH32 && BROKEN 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 KGDB_NMI - bool "Enter KGDB on NMI" + 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 DUMP_CODE + bool "Show disassembly of nearby code in register dumps" + depends on DEBUG_KERNEL && SUPERH32 + default y if DEBUG_BUGVERBOSE default n + help + This prints out a code trace of the instructions leading up to + the faulting instruction as a debugging aid. As this does grow + the kernel in size a bit, most users will want to say N here. -config KGDB_THREAD - bool "Include KGDB thread support" - default y + Those looking for more verbose debugging output should say Y. -config SH_KGDB_CONSOLE - bool "Console messages through GDB" +config DWARF_UNWINDER + bool "Enable the DWARF unwinder for stacktraces" + select FRAME_POINTER + depends on SUPERH32 default n + help + Enabling this option will make stacktraces more accurate, at + the cost of an increase in overall kernel size. -config KGDB_SYSRQ - bool "Allow SysRq 'G' to enter KGDB" - default y - -config KGDB_KERNEL_ASSERTS - bool "Include KGDB kernel assertions" +config SH_NO_BSS_INIT + bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" + depends on DEBUG_KERNEL default n + help + If running in painfully slow environments, such as an RTL + simulation or from remote memory via SHdebug, where the memory + can already be guaranteed to ber zeroed on boot, say Y. -comment "Serial port setup" - -config KGDB_DEFPORT - int "Port number (ttySCn)" - default "1" - -config KGDB_DEFBAUD - int "Baud rate" - default "115200" - -choice - prompt "Parity" - depends on KGDB - default KGDB_DEFPARITY_N - -config KGDB_DEFPARITY_N - bool "None" - -config KGDB_DEFPARITY_E - bool "Even" - -config KGDB_DEFPARITY_O - bool "Odd" - -endchoice - -choice - prompt "Data bits" - depends on KGDB - default KGDB_DEFBITS_8 - -config KGDB_DEFBITS_8 - bool "8" - -config KGDB_DEFBITS_7 - bool "7" - -endchoice + For all other cases, say N. If this option seems perplexing, or + you aren't sure, say N. -endmenu +config SH64_SR_WATCH + bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" + depends on SUPERH64 -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. +config MCOUNT + def_bool y + depends on SUPERH32 + depends on STACK_DEBUG || FUNCTION_TRACER endmenu |