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authorMasahiro Yamada <masahiroy@kernel.org>2022-09-24 21:19:13 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2022-09-29 00:07:58 +0300
commitf73edc8951b2de515b5ecc8a357ccd47dd41077e (patch)
treed47510e68b59ee420a244941b11be9a189c7e955 /scripts/link-vmlinux.sh
parent9c5a0ac3c36917c4258f734bda98be02ca36b992 (diff)
downloadlinux-f73edc8951b2de515b5ecc8a357ccd47dd41077e.tar.xz
kbuild: unify two modpost invocations
Currently, modpost is executed twice; first for vmlinux, second for modules. This commit merges them. Current build flow ================== 1) build obj-y and obj-m objects 2) link vmlinux.o 3) modpost for vmlinux 4) link vmlinux 5) modpost for modules 6) link modules (*.ko) The build steps 1) through 6) are serialized, that is, modules are built after vmlinux. You do not get benefits of parallel builds when scripts/link-vmlinux.sh is being run. New build flow ============== 1) build obj-y and obj-m objects 2) link vmlinux.o 3) modpost for vmlinux and modules 4a) link vmlinux 4b) link modules (*.ko) In the new build flow, modpost is invoked just once. vmlinux and modules are built in parallel. One exception is CONFIG_DEBUG_INFO_BTF_MODULES=y, where modules depend on vmlinux. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rwxr-xr-xscripts/link-vmlinux.sh3
1 files changed, 0 insertions, 3 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 07486f90d5e2..6a197d8a88ac 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -214,9 +214,6 @@ if [ "$1" = "clean" ]; then
exit 0
fi
-# modpost vmlinux.o to check for section mismatches
-${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
-
info MODINFO modules.builtin.modinfo
${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
info GEN modules.builtin