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Kernel modules are partially linked object files with some undefined symbols that are expected to be matched with EXPORT_SYMBOL() entries from elsewhere. Each .tmp_versions/*.mod file currently contains two line of text separated by a newline character. The first line has the actual module file name while the second line has a list of object files constituting that module. Those files are parsed by modpost (scripts/mod/sumversion.c), scripts/Makefile.modpost, scripts/Makefile.modsign, etc. Only the modpost utility cares about the second line while the others retrieve only the first line. Therefore we can add a third line to record the list of undefined symbols aka required EXPORT_SYMBOL() entries for each module into that file without breaking anything. Like for the second line, symbols are separated by a blank and the list is terminated with a newline character. To avoid needless build overhead, the undefined symbols extraction is performed only when CONFIG_TRIM_UNUSED_KSYMS is selected. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> |
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.. | ||
basic | ||
coccinelle | ||
dtc | ||
gdb | ||
genksyms | ||
kconfig | ||
ksymoops | ||
mod | ||
package | ||
selinux | ||
tracing | ||
.gitignore | ||
analyze_suspend.py | ||
asn1_compiler.c | ||
bloat-o-meter | ||
bootgraph.pl | ||
check_extable.sh | ||
check-lc_ctype.c | ||
checkincludes.pl | ||
checkkconfigsymbols.py | ||
checkpatch.pl | ||
checkstack.pl | ||
checksyscalls.sh | ||
checkversion.pl | ||
cleanfile | ||
cleanpatch | ||
coccicheck | ||
config | ||
conmakehash.c | ||
decode_stacktrace.sh | ||
decodecode | ||
depmod.sh | ||
diffconfig | ||
docproc.c | ||
export_report.pl | ||
extract-cert.c | ||
extract-ikconfig | ||
extract-module-sig.pl | ||
extract-sys-certs.pl | ||
extract-vmlinux | ||
gcc-goto.sh | ||
gcc-ld | ||
gcc-version.sh | ||
gcc-x86_32-has-stack-protector.sh | ||
gcc-x86_64-has-stack-protector.sh | ||
gen_initramfs_list.sh | ||
get_maintainer.pl | ||
gfp-translate | ||
headerdep.pl | ||
headers_check.pl | ||
headers_install.sh | ||
headers.sh | ||
insert-sys-cert.c | ||
kallsyms.c | ||
Kbuild.include | ||
kernel-doc | ||
kernel-doc-xml-ref | ||
ld-version.sh | ||
Lindent | ||
link-vmlinux.sh | ||
Makefile | ||
Makefile.asm-generic | ||
Makefile.build | ||
Makefile.clean | ||
Makefile.dtbinst | ||
Makefile.extrawarn | ||
Makefile.fwinst | ||
Makefile.headersinst | ||
Makefile.help | ||
Makefile.host | ||
Makefile.kasan | ||
Makefile.lib | ||
Makefile.modbuiltin | ||
Makefile.modinst | ||
Makefile.modpost | ||
Makefile.modsign | ||
Makefile.ubsan | ||
makelst | ||
markup_oops.pl | ||
mkcompile_h | ||
mkmakefile | ||
mksysmap | ||
mkuboot.sh | ||
mkversion | ||
module-common.lds | ||
namespace.pl | ||
objdiff | ||
patch-kernel | ||
pnmtologo.c | ||
profile2linkerlist.pl | ||
prune-kernel | ||
recordmcount.c | ||
recordmcount.h | ||
recordmcount.pl | ||
setlocalversion | ||
show_delta | ||
sign-file.c | ||
sortextable.c | ||
sortextable.h | ||
spelling.txt | ||
stackdelta | ||
stackusage | ||
tags.sh | ||
unifdef.c | ||
ver_linux | ||
xen-hypercalls.sh | ||
xz_wrap.sh |