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scripts/kallsyms: exclude symbols generated by itself dynamically

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Drop the symbols generated by scripts/kallsyms itself automatically
instead of maintaining the symbol list manually.

Pass the kallsyms object from the previous kallsyms step (if it exists)
as the third parameter of scripts/mksysmap, which will weed out the
generated symbols from the input to the next kallsyms step.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada
2023-03-08 20:52:39 +09:00
parent c4802044a0
commit ca09bf48f9
3 changed files with 13 additions and 20 deletions
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6
scripts/link-vmlinux.sh
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@@ -174,7 +174,7 @@ kallsyms_step()
kallsyms_S=${kallsyms_vmlinux}.S
vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms
mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms ${kallsymso_prev}
kallsyms ${kallsyms_vmlinux}.syms ${kallsyms_S}
info AS ${kallsyms_S}
@@ -188,7 +188,7 @@ kallsyms_step()
mksysmap()
{
info NM ${2}
${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2}
${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} ${3}
}
sorttable()
@@ -277,7 +277,7 @@ if is_enabled CONFIG_DEBUG_INFO_BTF && is_enabled CONFIG_BPF; then
${RESOLVE_BTFIDS} vmlinux
fi
mksysmap vmlinux System.map
mksysmap vmlinux System.map ${kallsymso}
if is_enabled CONFIG_BUILDTIME_TABLE_SORT; then
info SORTTAB vmlinux