diff mbox series

[v2,16/26] kbuild: generate a list of objects in vmlinux

Message ID	20220501084032.1025918-17-masahiroy@kernel.org (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-kbuild-owner@kernel.org> From: Masahiro Yamada <masahiroy@kernel.org> To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada <masahiroy@kernel.org>, Nicolas Schier <nicolas@fjasle.eu>, Michal Marek <michal.lkml@markovi.net>, Nick Desaulniers <ndesaulniers@google.com> Subject: [PATCH v2 16/26] kbuild: generate a list of objects in vmlinux Date: Sun, 1 May 2022 17:40:22 +0900 Message-Id: <20220501084032.1025918-17-masahiroy@kernel.org> In-Reply-To: <20220501084032.1025918-1-masahiroy@kernel.org> References: <20220501084032.1025918-1-masahiroy@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	kbuild: yet another series of cleanups (modpost and LTO) \| expand [v2,00/26] kbuild: yet another series of cleanups (modpost and LTO) [v2,01/26] modpost: use bool type where appropriate [v2,02/26] modpost: change mod->gpl_compatible to bool type [v2,03/26] modpost: import include/linux/list.h [v2,04/26] modpost: traverse modules in order [v2,05/26] modpost: add sym_add_unresolved() helper [v2,06/26] modpost: traverse unresolved symbols in order [v2,07/26] modpost: use doubly linked list for dump_lists [v2,08/26] modpost: traverse the namespace_list in order [v2,09/26] modpost: dump Module.symvers in the same order of modules.order [v2,10/26] modpost: move static EXPORT_SYMBOL check to check_exports() [v2,11/26] modpost: make multiple export error [v2,12/26] modpost: make sym_add_exported() always allocate a new symbol [v2,13/26] modpost: split new_symbol() to symbol allocation and hash table addition [v2,14/26] modpost: mitigate false-negatives for static EXPORT_SYMBOL checks [v2,15/26] kbuild: record symbol versions in .cmd files [v2,16/26] kbuild: generate a list of objects in vmlinux [v2,17/26] modpost: extract symbol versions from .cmd files [v2,18/26] modpost: generate linker script to collect symbol versions [v2,19/26] kbuild: embed symbol versions at final link of vmlinux or modules [v2,20/26] kbuild: stop merging .symversions [v2,21/26] genksyms: adjust the output format for .cmd files [v2,22/26] kbuild: do not create .prelink.o for Clang LTO or IBT [v2,23/26] kbuild: make built-in.a rule robust against too long argument error [v2,24/26] kbuild: make *.mod rule robust against too long argument error [v2,25/26] modpost: simplify the ->is_static initialization [v2,26/26] modpost: use hlist for hash table implementation

Commit Message

Masahiro Yamada May 1, 2022, 8:40 a.m. UTC

A *.mod file lists the member objects of a module, but vmlinux does
not have such a file to list out all the member objects.

Generate this list to allow modpost to know all the member objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
---

Changes in v2:
  - Move '> .vmlinux.objs' to the outside of the loop (Nicolas)
  - Clean up .vmlinux.objs explicitly

 scripts/link-vmlinux.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff mbox series

Patch

diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 20f44504a644..eceb3ee7ec06 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -311,6 +311,7 @@  cleanup()
 	rm -f vmlinux.map
 	rm -f vmlinux.o
 	rm -f .vmlinux.d
+	rm -f .vmlinux.objs
 }
 
 # Use "make V=1" to debug this script
@@ -342,6 +343,16 @@  ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1
 modpost_link vmlinux.o
 objtool_link vmlinux.o
 
+# Generate the list of objects in vmlinux
+for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
+	case ${f} in
+	*.a)
+		${AR} t ${f} ;;
+	*)
+		echo ${f} ;;
+	esac
+done > .vmlinux.objs
+
 # modpost vmlinux.o to check for section mismatches
 ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1