mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 21:51:40 +00:00
a6a3113989
This enables support for 4K stacks on SH. Currently this depends on DEBUG_KERNEL, but likely all boards will switch to this as the default in the future. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
143 lines
3.7 KiB
Plaintext
143 lines
3.7 KiB
Plaintext
menu "Kernel hacking"
|
|
|
|
source "lib/Kconfig.debug"
|
|
|
|
config SH_STANDARD_BIOS
|
|
bool "Use LinuxSH standard BIOS"
|
|
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.
|
|
|
|
config EARLY_SCIF_CONSOLE
|
|
bool "Use early SCIF console"
|
|
depends on CPU_SH4 || CPU_SH2A && !SH_STANDARD_BIOS
|
|
|
|
config EARLY_PRINTK
|
|
bool "Early printk support"
|
|
depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
|
|
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 DEBUG_STACKOVERFLOW
|
|
bool "Check for stack overflows"
|
|
depends on DEBUG_KERNEL
|
|
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
|
|
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 4KSTACKS
|
|
bool "Use 4Kb for kernel stacks instead of 8Kb"
|
|
depends on DEBUG_KERNEL
|
|
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.
|
|
|
|
config KGDB
|
|
bool "Include KGDB kernel debugger"
|
|
select FRAME_POINTER
|
|
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"
|
|
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"
|
|
default n
|
|
|
|
config KGDB_THREAD
|
|
bool "Include KGDB thread support"
|
|
default y
|
|
|
|
config SH_KGDB_CONSOLE
|
|
bool "Console messages through GDB"
|
|
default n
|
|
|
|
config KGDB_SYSRQ
|
|
bool "Allow SysRq 'G' to enter KGDB"
|
|
default y
|
|
|
|
config KGDB_KERNEL_ASSERTS
|
|
bool "Include KGDB kernel assertions"
|
|
default n
|
|
|
|
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
|
|
|
|
endmenu
|
|
|
|
endmenu
|