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kbuild: add CONFIG_VMLINUX_MAP expert option

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It can be quite useful to have ld emit a link map file, in order to
debug or verify that special sections end up where they are supposed
to, and to see what LD_DEAD_CODE_DATA_ELIMINATION manages to get rid
of.

The only reason I'm not just adding this unconditionally is that the
.map file can be rather large (several MB), and that's a waste of
space when one isn't interested in these things. Also make it depend
on CONFIG_EXPERT.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Rasmus Villemoes
2021-03-05 10:27:07 +01:00
committed by Masahiro Yamada
parent 609bbb4de4
commit 5cc1247204
4 changed files with 20 additions and 0 deletions
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@@ -59,6 +59,7 @@ modules.order
/linux
/vmlinux
/vmlinux.32
/vmlinux.map
/vmlinux.symvers
/vmlinux-gdb.py
/vmlinuz