[PATCH] frv: drop unsupported debugging features (8369ce4c) · Commits · 戴 / test

Drop support for debugging features that aren't supported on FRV: (*) EARLY_PRINTK The on-chip UARTs are set up early enough that this isn't required, and VGA support isn't available. There's also a gdbstub available. (*) DEBUG_PAGEALLOC This can't be easily be done since we use huge static mappings to cover the kernel, not pages. Signed-off-by:

David Howells <dhowells@redhat.com> Signed-off-by:

Andrew Morton <akpm@osdl.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

arch/frv/Kconfig.debug

+0 −22

Original line number	Diff line number	Diff line
		@@ -2,32 +2,10 @@ menu "Kernel hacking"

		source "lib/Kconfig.debug"

		config EARLY_PRINTK
		bool "Early printk"
		depends on EMBEDDED && DEBUG_KERNEL
		default n
		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 DEBUG_STACKOVERFLOW
		bool "Check for stack overflows"
		depends on DEBUG_KERNEL

		config DEBUG_PAGEALLOC
		bool "Page alloc debugging"
		depends on DEBUG_KERNEL
		help
		Unmap pages from the kernel linear mapping after free_pages().
		This results in a large slowdown, but helps to find certain types
		of memory corruptions.

		config GDBSTUB
		bool "Remote GDB kernel debugging"
		depends on DEBUG_KERNEL

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