linux/arch/arc/Kconfig.debug

menu "Kernel hacking"

source "lib/Kconfig.debug"

config EARLY_PRINTK
	bool "Early printk" if EMBEDDED
	default y
	help
	  Write kernel log output directly into the VGA buffer or to a serial
	  port.

	  This is useful for kernel debugging when your machine crashes very
	  early before the console code is initialized. For normal operation
	  it is not recommended because it looks ugly and doesn't cooperate
	  with klogd/syslogd or the X server. You should normally N here,
	  unless you want to debug such a crash.

config 16KSTACKS
	bool "Use 16Kb for kernel stacks instead of 8Kb"
	help
	  If you say Y here the kernel will use a  16Kb stacksize for the
	  kernel stack attached to each process/thread. The default is 8K.
	  This increases the resident kernel footprint and will cause less
	  threads to run on the system and also increase the pressure
	  on the VM subsystem for higher order allocations.

endmenu
ARC: Build system: Makefiles, Kconfig, Linker script Arnd in his review pointed out that arch Kconfig organisation has several deficiencies: * Build time entries for things which can be runtime extracted from DT (e.g. SDRAM size, core clk frequency..) * Not multi-platform-image-build friendly (choice .. endchoice constructs) * cpu variants support (750/770) is exclusive. The first 2 have been fixed in subsequent patches. Due to the nature of the 750 and 770, it is not possible to build for both together, w/o special runtime glue code which would hurt performance. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> 2013-01-18 09:42:20 +00:00			`menu "Kernel hacking"`

			`source "lib/Kconfig.debug"`

			`config EARLY_PRINTK`
			`bool "Early printk" if EMBEDDED`
			`default y`
			`help`
			`Write kernel log output directly into the VGA buffer or to a serial`
			`port.`

			`This is useful for kernel debugging when your machine crashes very`
			`early before the console code is initialized. For normal operation`
			`it is not recommended because it looks ugly and doesn't cooperate`
			`with klogd/syslogd or the X server. You should normally N here,`
			`unless you want to debug such a crash.`

			`config 16KSTACKS`
			`bool "Use 16Kb for kernel stacks instead of 8Kb"`
			`help`
			`If you say Y here the kernel will use a 16Kb stacksize for the`
			`kernel stack attached to each process/thread. The default is 8K.`
			`This increases the resident kernel footprint and will cause less`
			`threads to run on the system and also increase the pressure`
			`on the VM subsystem for higher order allocations.`

			`endmenu`