diff options
| author | Masahiro Yamada <masahiroy@kernel.org> | 2025-03-13 19:26:03 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2025-03-15 21:22:52 +0900 |
| commit | ba4d705046fb568bad4aeffeb79db78d4e835a1f (patch) | |
| tree | f7473fbe59f8c4c5b4b00f5f4c2452bcc0d6542c | |
| parent | 479fde496586efa1105496c536c4c65bed43fe2b (diff) | |
kbuild: do not generate .tmp_vmlinux*.map when CONFIG_VMLINUX_MAP=y
Commit 5cc124720461 ("kbuild: add CONFIG_VMLINUX_MAP expert option")
mentioned 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."
If that is the case, generating map files for the intermediate
tmp_vmlinux* files is also a waste of space. It is unlikely that
anyone would be interested in the .tmp_vmlinux*.map files.
This commit stops passing the -Map= option when linking the .tmp_vmlinux*
intermediates.
I also hard-coded the file name 'vmlinux.map' instead of ${output}.map
because a later commit will introduce vmlinux.unstripped but I want to
keep the current name of the map file.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
| -rwxr-xr-x | scripts/link-vmlinux.sh | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 56a077d204cf..96ae0bb65308 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -97,8 +97,8 @@ vmlinux_link() ldflags="${ldflags} ${wl}--strip-debug" fi - if is_enabled CONFIG_VMLINUX_MAP; then - ldflags="${ldflags} ${wl}-Map=${output}.map" + if [ -n "${generate_map}" ]; then + ldflags="${ldflags} ${wl}-Map=vmlinux.map" fi ${ld} ${ldflags} -o ${output} \ @@ -210,6 +210,7 @@ fi btf_vmlinux_bin_o= kallsymso= strip_debug= +generate_map= if is_enabled CONFIG_KALLSYMS; then true > .tmp_vmlinux0.syms @@ -278,6 +279,10 @@ fi strip_debug= +if is_enabled CONFIG_VMLINUX_MAP; then + generate_map=1 +fi + vmlinux_link vmlinux # fill in BTF IDs |