[PATCH] uml: add debug switch for skas mode (fbd55779) · Commits · 戴 / test

It doesn't do anything but emit a warning, but there's a user population that's used to adding 'debug' to the UML command line in order to gdb it. With skas0 mode, that's not necessary, but these users need some indication that 'debug' doesn't do what they want. Signed-off-by:

Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:

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

Linus Torvalds <torvalds@osdl.org>

arch/um/kernel/um_arch.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -193,6 +193,24 @@ __uml_setup("root=", uml_root_setup,
		" root=/dev/ubd5\n\n"
		);

		#ifndef CONFIG_MODE_TT

		static int __init no_skas_debug_setup(char line, int add)
		{
		printf("'debug' is not necessary to gdb UML in skas mode - run \n");
		printf("'gdb linux' and disable CONFIG_CMDLINE_ON_HOST if gdb \n");
		printf("doesn't work as expected\n");

		return 0;
		}

		__uml_setup("debug", no_skas_debug_setup,
		"debug\n"
		" this flag is not needed to run gdb on UML in skas mode\n\n"
		);

		#endif

		#ifdef CONFIG_SMP
		static int __init uml_ncpus_setup(char line, int add)
		{

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