2005-04-16 16:20:36 -06:00
|
|
|
menu "Kernel hacking"
|
|
|
|
|
2006-12-04 02:17:28 -07:00
|
|
|
config TRACE_IRQFLAGS_SUPPORT
|
2007-12-10 21:49:35 -07:00
|
|
|
def_bool y
|
2006-12-04 02:17:28 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
source "lib/Kconfig.debug"
|
|
|
|
|
|
|
|
config SH_STANDARD_BIOS
|
|
|
|
bool "Use LinuxSH standard BIOS"
|
2008-04-24 20:54:06 -06:00
|
|
|
depends on SUPERH32
|
2005-04-16 16:20:36 -06:00
|
|
|
help
|
|
|
|
Say Y here if your target has the gdb-sh-stub
|
|
|
|
package from www.m17n.org (or any conforming standard LinuxSH BIOS)
|
|
|
|
in FLASH or EPROM. The kernel will use standard BIOS calls during
|
|
|
|
boot for various housekeeping tasks (including calls to read and
|
|
|
|
write characters to a system console, get a MAC address from an
|
|
|
|
on-board Ethernet interface, and shut down the hardware). Note this
|
|
|
|
does not work with machines with an existing operating system in
|
|
|
|
mask ROM and no flash (WindowsCE machines fall in this category).
|
|
|
|
If unsure, say N.
|
|
|
|
|
2009-07-11 05:05:34 -06:00
|
|
|
config STACK_DEBUG
|
2006-09-27 03:20:16 -06:00
|
|
|
bool "Check for stack overflows"
|
2007-11-21 01:47:15 -07:00
|
|
|
depends on DEBUG_KERNEL && SUPERH32
|
2006-09-27 03:20:16 -06:00
|
|
|
help
|
|
|
|
This option will cause messages to be printed if free stack space
|
2009-07-11 05:05:34 -06:00
|
|
|
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.
|
2006-09-27 03:20:16 -06:00
|
|
|
|
2006-09-27 03:22:14 -06:00
|
|
|
config 4KSTACKS
|
|
|
|
bool "Use 4Kb for kernel stacks instead of 8Kb"
|
2008-09-20 05:16:35 -06:00
|
|
|
depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB
|
2006-09-27 03:22:14 -06:00
|
|
|
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.
|
|
|
|
|
2007-11-01 21:16:51 -06:00
|
|
|
config IRQSTACKS
|
|
|
|
bool "Use separate kernel stacks when processing interrupts"
|
2009-05-07 00:24:36 -06:00
|
|
|
depends on DEBUG_KERNEL && SUPERH32 && BROKEN
|
2007-11-01 21:16:51 -06:00
|
|
|
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.
|
|
|
|
|
2008-12-16 23:56:06 -07:00
|
|
|
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.
|
|
|
|
|
|
|
|
Those looking for more verbose debugging output should say Y.
|
|
|
|
|
2009-08-13 10:58:43 -06:00
|
|
|
config DWARF_UNWINDER
|
|
|
|
bool "Enable the DWARF unwinder for stacktraces"
|
|
|
|
select FRAME_POINTER
|
|
|
|
default n
|
|
|
|
help
|
|
|
|
Enabling this option will make stacktraces more accurate, at
|
|
|
|
the cost of an increase in overall kernel size.
|
|
|
|
|
2008-12-16 23:33:43 -07:00
|
|
|
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
|
2011-03-30 19:57:33 -06:00
|
|
|
can already be guaranteed to ber zeroed on boot, say Y.
|
2008-12-16 23:33:43 -07:00
|
|
|
|
|
|
|
For all other cases, say N. If this option seems perplexing, or
|
|
|
|
you aren't sure, say N.
|
|
|
|
|
2007-11-21 00:58:56 -07:00
|
|
|
config SH64_SR_WATCH
|
|
|
|
bool "Debug: set SR.WATCH to enable hardware watchpoints and trace"
|
2008-12-16 23:36:50 -07:00
|
|
|
depends on SUPERH64
|
2007-11-21 00:58:56 -07:00
|
|
|
|
2009-07-11 04:56:58 -06:00
|
|
|
config MCOUNT
|
|
|
|
def_bool y
|
|
|
|
depends on SUPERH32
|
|
|
|
depends on STACK_DEBUG || FUNCTION_TRACER
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
endmenu
|