Re: [PATCH v6 11/17] kbuild: Add generic hook for architectures to use before the final vmlinux link
From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2024-10-27 09:15:06
Also in:
bpf, linux-kbuild, linux-trace-kernel, lkml
On Sat, Oct 19, 2024 at 2:37 AM Hari Bathini [off-list ref] wrote:
From: Naveen N Rao <naveen@kernel.org> On powerpc, we would like to be able to make a pass on vmlinux.o and generate a new object file to be linked into vmlinux. Add a generic pass in Makefile.vmlinux that architectures can use for this purpose. Architectures need to select CONFIG_ARCH_WANTS_PRE_LINK_VMLINUX and must provide arch/<arch>/tools/Makefile with .arch.vmlinux.o target, which will be invoked prior to the final vmlinux link step. Signed-off-by: Naveen N Rao <naveen@kernel.org> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
quoted hunk ↗ jump to hunk
--- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh@@ -100,7 +100,7 @@ vmlinux_link() ${ld} ${ldflags} -o ${output} \ ${wl}--whole-archive ${objs} ${wl}--no-whole-archive \ ${wl}--start-group ${libs} ${wl}--end-group \ - ${kallsymso} ${btf_vmlinux_bin_o} ${ldlibs} + ${kallsymso} ${btf_vmlinux_bin_o} ${arch_vmlinux_o} ${ldlibs} } # generate .BTF typeinfo from DWARF debuginfo@@ -198,6 +198,11 @@ fi ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init init/version-timestamp.o +arch_vmlinux_o=""
Nit: unnecessary double quotes. arch_vmlinux_o= is enough. Other than that, Acked-by: Masahiro Yamada <masahiroy@kernel.org> -- Best Regards Masahiro Yamada