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Masahiro Yamada 52d83df682 kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y 
When CONFIG_TRIM_UNUSED_KSYMS is enabled, I see some warnings like this:

  nm: arch/x86/entry/vdso/vdso32/note.o: no symbols

$NM (both GNU nm and llvm-nm) warns when no symbol is found in the
object. Suppress the stderr.

Fangrui Song mentioned binutils>=2.37 `nm -q` can be used to suppress
"no symbols" [1], and llvm-nm>=13.0.0 supports -q as well.

We cannot use it for now, but note it as a TODO.

[1]: https://sourceware.org/bugzilla/show_bug.cgi?id=27408

Fixes: bbda5ec671d3 ("kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
2021-09-03 08:17:20 +09:00
..
atomic
locking/atomics: atomic-instrumented: simplify ifdeffery
2021-05-26 13:20:52 +02:00
basic
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
clang-tools
gen_compile_commands: prune some directories
2021-02-16 22:23:56 +09:00
coccinelle
coccinelle: api: remove kobj_to_dev.cocci script
2021-06-21 20:45:49 +02:00
dtc
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
dummy-tools
kbuild: dummy-tools: adjust to stricter stackprotector check
2021-05-17 12:10:03 +09:00
gcc-plugins
scripts: make some scripts executable
2021-08-10 09:13:25 +09:00
gdb
scripts/gdb: add lx_current support for arm64
2021-05-07 00:26:33 -07:00
genksyms
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
kconfig
scripts: merge_config: add strict mode to fail upon any redefinition
2021-08-10 08:23:39 +09:00
ksymoops
…
mod
kbuild: modpost: Explicitly warn about unprototyped symbols
2021-06-17 10:01:05 +09:00
package
kbuild: buildtar: add riscv support
2021-03-29 23:13:30 -07:00
selinux
scripts/selinux,selinux: update mdp to enable policy capabilities
2020-08-17 20:42:00 -04:00
tracing
scripts/tracing: fix the bug that can't parse raw_trace_func
2021-08-04 17:49:26 -04:00
.gitignore
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
adjust_autoksyms.sh
kbuild: do not include include/config/auto.conf from adjust_autoksyms.sh
2021-02-28 15:22:02 +09:00
as-version.sh
kbuild: Switch to 'f' variants of integrated assembler flag
2021-09-03 08:17:20 +09:00
asn1_compiler.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
bin2c.c
…
bloat-o-meter
scripts: switch explicitly to Python 3
2021-01-22 06:34:44 +09:00
bootgraph.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391
2019-06-05 17:37:11 +02:00
bpf_doc.py
scripts/bpf: Add syscall commands printer
2021-03-04 18:39:45 -08:00
cc-can-link.sh
…
cc-version.sh
kbuild: collect minimum tool versions into scripts/min-tool-version.sh
2021-04-25 05:14:26 +09:00
check_extable.sh
…
check-sysctl-docs
docs: add a script to check sysctl docs
2020-02-25 03:35:16 -07:00
checkdeclares.pl
scripts: make some scripts executable
2021-08-10 09:13:25 +09:00
checkincludes.pl
…
checkkconfigsymbols.py
kconfig: remove '---help---' support
2020-08-14 13:30:03 +09:00
checkpatch.pl
checkpatch: do not complain about positive return values starting with EPOLL
2021-07-01 11:06:06 -07:00
checkstack.pl
scripts/checkstack.pl: fix arm sp regex
2020-05-26 00:03:16 +09:00
checksyscalls.sh
arch, mm: wire up memfd_secret system call where relevant
2021-07-08 11:48:21 -07:00
checkversion.pl
scripts: checkversion: modernize linux/version.h search strings
2021-08-05 20:55:39 +09:00
cleanfile
…
cleanpatch
…
coccicheck
scripts: coccicheck: fix troubles on non-English builds
2021-05-18 11:09:59 +02:00
config
kconfig: config script: add a little user help
2021-01-04 10:38:11 +09:00
const_structs.checkpatch
const_structs.checkpatch: add pinctrl_ops and pinmux_ops
2020-10-16 11:11:21 -07:00
decode_stacktrace.sh
scripts/decode_stacktrace.sh: indicate 'auto' can be used for base path
2021-07-08 11:48:22 -07:00
decodecode
scripts/decodecode: add the capability to supply the program counter
2020-10-13 18:38:26 -07:00
depmod.sh
depmod: handle the case of /sbin/depmod without /sbin in PATH
2021-01-01 12:26:39 -08:00
dev-needs.sh
scripts/dev-needs: Add script to list device dependencies
2020-09-04 18:19:37 +02:00
diffconfig
scripts: switch explicitly to Python 3
2021-01-22 06:34:44 +09:00
documentation-file-ref-check
documentation-file-ref-check: Make git check work for multiple working directories
2021-06-04 11:20:52 -06:00
export_report.pl
modpost: move the namespace field in Module.symvers last
2020-03-17 08:59:03 +09:00
extract_xc3028.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339
2019-06-05 17:37:07 +02:00
extract-cert.c
extract-cert: add static to local data
2020-08-18 20:16:46 +09:00
extract-ikconfig
…
extract-module-sig.pl
…
extract-sys-certs.pl
…
extract-vmlinux
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
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-x86_32-has-stack-protector.sh
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh
…
gen_autoksyms.sh
kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
2021-09-03 08:12:39 +09:00
gen_ksymdeps.sh
kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y
2021-09-03 08:17:20 +09:00
generate_initcall_order.pl
init: lto: ensure initcall ordering
2021-01-14 08:21:09 -08:00
get_abi.pl
scripts: get_abi: ignore code blocks for cross-references
2021-03-31 13:53:16 -06:00
get_dvb_firmware
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
get_feat.pl
scripts: get_feat.pl: reduce table width for all features output
2020-12-04 14:34:27 -07:00
get_maintainer.pl
get_maintainer: exclude MAINTAINERS file(s) from --git-fallback
2020-10-16 11:11:19 -07:00
gfp-translate
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
headerdep.pl
…
headers_check.pl
…
headers_install.sh
Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-08-07 13:29:39 -07:00
insert-sys-cert.c
…
jobserver-exec
scripts/jobserver-exec: Fix a typo ("envirnoment")
2021-05-17 12:10:03 +09:00
kallsyms.c
kallsyms: fix nonconverging kallsyms table with lld
2021-02-05 17:53:28 +09:00
Kbuild.include
kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk
2021-09-03 08:17:19 +09:00
Kconfig.include
kbuild: check the minimum assembler version in Kconfig
2021-04-25 05:14:41 +09:00
kernel-doc
scripts: kernel-doc: reduce repeated regex expressions into variables
2021-05-17 11:21:16 -06:00
ld-version.sh
kbuild: collect minimum tool versions into scripts/min-tool-version.sh
2021-04-25 05:14:26 +09:00
leaking_addresses.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
Lindent
…
link-vmlinux.sh
Kbuild updates for v5.14
2021-07-10 11:01:38 -07:00
Makefile
Fix CVE-2020-26541
2021-04-26 08:38:10 -07:00
Makefile.asm-generic
kbuild: prefix $(srctree)/ to some included Makefiles
2021-03-15 19:20:48 +09:00
Makefile.build
kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
2021-09-03 08:12:39 +09:00
Makefile.clang
kbuild: Switch to 'f' variants of integrated assembler flag
2021-09-03 08:17:20 +09:00
Makefile.clean
kbuild: prefix $(srctree)/ to some included Makefiles
2021-03-15 19:20:48 +09:00
Makefile.compiler
kbuild: remove TMPO from try-run
2021-04-25 05:25:56 +09:00
Makefile.dtbinst
kbuild: prefix $(srctree)/ to some included Makefiles
2021-03-15 19:20:48 +09:00
Makefile.extrawarn
Makefile.extrawarn: remove -Wnested-externs warning
2020-12-08 23:30:05 +09:00
Makefile.gcc-plugins
gcc-plugins/stackleak: Use asm instrumentation to avoid useless register saving
2020-06-24 07:48:28 -07:00
Makefile.headersinst
kbuild: prefix $(srctree)/ to some included Makefiles
2021-03-15 19:20:48 +09:00
Makefile.host
kbuild: sort hostprogs before passing it to ifneq
2020-08-10 01:32:59 +09:00
Makefile.kasan
kasan: arm64: support specialized outlined tag mismatch checks
2021-05-26 23:31:26 +01:00
Makefile.kcov
kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled
2020-08-10 01:32:59 +09:00
Makefile.kcsan
Kbuild updates for v5.10
2020-10-22 13:13:57 -07:00
Makefile.lib
kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
2021-09-03 08:12:39 +09:00
Makefile.modfinal
kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
2021-09-03 08:12:39 +09:00
Makefile.modinst
kbuild: add support for zstd compressed modules
2021-04-25 05:25:06 +09:00
Makefile.modpost
kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
2021-09-03 08:12:39 +09:00
Makefile.package
kbuild: deb-pkg: change the source package name to linux-upstream
2021-04-25 05:30:45 +09:00
Makefile.ubsan
ubsan: remove overflow checks
2021-02-26 09:41:05 -08:00
Makefile.userprogs
kbuild: add infrastructure to build userspace programs
2020-05-17 18:52:01 +09:00
makelst
…
markup_oops.pl
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373
2019-06-05 17:37:10 +02:00
min-tool-version.sh
scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390
2021-06-28 11:18:28 +02:00
mkcompile_h
kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
2021-06-17 10:01:12 +09:00
mksysmap
mksysmap: Fix the mismatch of '.L' symbols in System.map
2020-06-06 23:39:20 +09:00
mkuboot.sh
…
module.lds.S
module: ensure __cfi_check alignment
2021-04-08 16:04:21 -07:00
modules-check.sh
kbuild: check module name conflict for external modules as well
2021-04-25 05:22:42 +09:00
nsdeps
kbuild: replace LANG=C with LC_ALL=C
2021-05-02 00:43:35 +09:00
objdiff
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199
2019-05-30 11:29:23 -07:00
parse-maintainers.pl
parse-maintainers: Do not sort section content by default
2020-03-26 15:08:27 -07:00
patch-kernel
…
profile2linkerlist.pl
…
prune-kernel
…
recordmcount.c
ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount
2021-03-02 17:27:18 -05:00
recordmcount.h
recordmcount: Correct st_shndx handling
2021-06-18 09:09:17 -04:00
recordmcount.pl
scripts/recordmcount.pl: Remove check_objcopy() and $can_use_local
2021-08-04 17:49:26 -04:00
remove-stale-files
kbuild: add a script to remove stale generated files
2021-05-02 00:43:35 +09:00
setlocalversion
scripts/setlocalversion: fix a bug when LOCALVERSION is empty
2021-07-18 23:48:14 +09:00
show_delta
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
sign-file.c
…
sorttable.c
s390/kernel: expand exception table logic to allow new handling options
2020-07-20 10:55:50 +02:00
sorttable.h
scripts/sorttable: Implement build-time ORC unwind table sorting
2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
…
spdxcheck.py
scripts/spdxcheck.py: Strictly read license files in utf-8
2021-07-12 09:56:50 -06:00
spelling.txt
scripts/spelling.txt: add more spellings to spelling.txt
2021-06-29 10:53:45 -07:00
sphinx-pre-install
scripts: sphinx-pre-install: fix the need of virtenv packages
2021-06-01 16:29:30 -06:00
split-man.pl
tweewide: Fix most Shebang lines
2020-12-08 23:30:04 +09:00
stackdelta
…
stackusage
…
subarch.include
…
syscallhdr.sh
scripts: check duplicated syscall number in syscall table
2021-07-09 04:00:39 +09:00
syscallnr.sh
scripts: make some scripts executable
2021-08-10 09:13:25 +09:00
syscalltbl.sh
scripts: check duplicated syscall number in syscall table
2021-07-09 04:00:39 +09:00
tags.sh
kbuild: replace LANG=C with LC_ALL=C
2021-05-02 00:43:35 +09:00
tools-support-relr.sh
Makefile: fix GDB warning with CONFIG_RELR
2021-06-08 13:09:34 +01:00
unifdef.c
…
ver_linux
Removed the oprofiled version option
2021-05-03 17:23:06 -06:00
xen-hypercalls.sh
scripts: make some scripts executable
2021-08-10 09:13:25 +09:00
xz_wrap.sh
kbuild: add variables for compression tools
2020-06-06 23:42:01 +09:00