Kees Cook f9b3cd2457 Kconfig.debug: make DEBUG_INFO selectable from a choice
Currently it's not possible to enable DEBUG_INFO for an all*config
build, since it is marked as "depends on !COMPILE_TEST".

This generally makes sense because a debug build of an all*config target
ends up taking much longer and the output is much larger.  Having this
be "default off" makes sense.

However, there are cases where enabling DEBUG_INFO for such builds is
useful for doing treewide A/B comparisons of build options, etc.

Make DEBUG_INFO selectable from any of the DWARF version choice options,
with DEBUG_INFO_NONE being the default for COMPILE_TEST.

The mutually exclusive relationship between DWARF5 and BTF must be
inverted, but the result remains the same.  Additionally moves
DEBUG_KERNEL and DEBUG_MISC up to the top of the menu because they were
enabling features _above_ it, making it weird to navigate menuconfig.

[keescook@chromium.org: make DEBUG_INFO always default=n]
  Link: https://lkml.kernel.org/r/20220128214131.580131-1-keescook@chromium.org
  Link: https://lore.kernel.org/lkml/YfRY6+CaQxX7O8vF@dev-arch.archlinux-ax161

Link: https://lkml.kernel.org/r/20220125075126.891825-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:33 -07:00
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