linux_dsm_epyc7002/scripts
Kees Cook af73d78bd3 kbuild: Remove debug info from kallsyms linking
When CONFIG_DEBUG_INFO is enabled, the two kallsyms linking steps spend
time collecting and writing the dwarf sections to the temporary output
files. kallsyms does not need this information, and leaving it off
halves their linking time. This is especially noticeable without
CONFIG_DEBUG_INFO_REDUCED. The BTF linking stage, however, does still
need those details.

Refactor the BTF and kallsyms generation stages slightly for more
regularized temporary names. Skip debug during kallsyms links.
Additionally move "info BTF" to the correct place since commit
8959e39272 ("kbuild: Parameterize kallsyms generation and correct
reporting"), which added "info LD ..." to vmlinux_link calls.

For a full debug info build with BTF, my link time goes from 1m06s to
0m54s, saving about 12 seconds, or 18%.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/202003031814.4AEA3351@keescook
2020-03-04 18:36:33 +01:00
..
atomic
basic kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
coccinelle mm: remove __krealloc 2020-02-04 03:05:24 +00:00
dtc kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
gcc-plugins kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
gdb
genksyms kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
kconfig kconfig: Invalidate all symbols after changing to y or m. 2020-02-05 13:45:37 +09:00
ksymoops
mod kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
package builddeb: split libc headers deployment out into a function 2020-01-29 01:51:30 +09:00
selinux kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
tracing
.gitignore TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
adjust_autoksyms.sh
asn1_compiler.c
bin2c.c
bloat-o-meter
bootgraph.pl
bpf_helpers_doc.py scripts/bpf: Switch to more portable python3 shebang 2020-02-26 15:42:21 +01:00
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl pr_warning() removal for 5.5 2019-12-09 11:48:21 -08:00
checkstack.pl
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config
const_structs.checkpatch
decode_stacktrace.sh
decodecode
depmod.sh
diffconfig
documentation-file-ref-check
export_report.pl
extract_xc3028.pl
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
faddr2line
file-size.sh
find-unused-docs.sh scripts/find-unused-docs: Fix massive false positives 2020-01-27 14:25:06 -07:00
gcc-goto.sh
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_compile_commands.py
gen_ksymdeps.sh
get_abi.pl
get_dvb_firmware
get_maintainer.pl scripts/get_maintainer.pl: deprioritize old Fixes: addresses 2020-02-21 11:22:15 -08:00
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh
insert-sys-cert.c
jobserver-exec docs, parallelism: Rearrange how jobserver reservations are made 2019-11-22 10:35:18 -07:00
kallsyms.c scripts/kallsyms: fix memory corruption caused by write over-run 2020-02-11 05:18:09 +09:00
Kbuild.include kbuild: remove *.tmp file when filechk fails 2020-01-16 00:26:22 +09:00
Kconfig.include Kbuild updates for v5.6 2020-02-01 10:01:52 -08:00
kernel-doc
ld-version.sh
leaking_addresses.pl
Lindent
link-vmlinux.sh kbuild: Remove debug info from kallsyms linking 2020-03-04 18:36:33 +01:00
Makefile kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Makefile.asm-generic
Makefile.build kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Makefile.clean kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Makefile.dtbinst
Makefile.extrawarn
Makefile.gcc-plugins
Makefile.headersinst kbuild: move headers_check rule to usr/include/Makefile 2019-11-15 00:23:10 +09:00
Makefile.host kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Makefile.kasan
Makefile.kcov
Makefile.lib kbuild: remove unneeded semicolon at the end of cmd_dtb_check 2020-02-27 02:24:34 +09:00
Makefile.modfinal
Makefile.modinst
Makefile.modpost kbuild: remove 'Building modules, stage 2.' log 2020-01-16 01:18:35 +09:00
Makefile.modsign
Makefile.package
Makefile.ubsan
makelst
markup_oops.pl
mkcompile_h mkcompile_h: use printf for LINUX_COMPILE_BY 2019-12-14 15:53:04 +09:00
mkmakefile
mksysmap
mkuboot.sh
module-common.lds
modules-check.sh
namespace.pl
nsdeps
objdiff
parse-maintainers.pl
patch-kernel
profile2linkerlist.pl
prune-kernel
recordmcount.c ARM: 8950/1: ftrace/recordmcount: filter relocation types 2020-01-19 16:08:25 +00:00
recordmcount.h
recordmcount.pl
setlocalversion
show_delta
sign-file.c
sorttable.c scripts/sorttable: Implement build-time ORC unwind table sorting 2019-12-13 10:47:58 +01:00
sorttable.h scripts/sorttable: Implement build-time ORC unwind table sorting 2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
spdxcheck.py
spelling.txt scripts/spelling.txt: add "issus" typo 2020-01-31 10:30:36 -08:00
sphinx-pre-install Allow git builds of Sphinx 2020-02-05 10:33:44 -07:00
split-man.pl
stackdelta
stackusage
subarch.include
tags.sh
tools-support-relr.sh
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh