Quentin Perret
3d0431a87a
BACKPORT: FROMLIST: kbuild: allow symbol whitelisting with TRIM_UNUSED_KSYMS ...
CONFIG_TRIM_UNUSED_KSYMS currently removes all unused exported symbols
from ksymtab. This works really well when using in-tree drivers, but
cannot be used in its current form if some of them are out-of-tree.
Indeed, even if the list of symbols required by out-of-tree drivers is
known at compile time, the only solution today to guarantee these don't
get trimmed is to set CONFIG_TRIM_UNUSED_KSYMS=n. This not only wastes
space, but also makes it difficult to control the ABI usable by vendor
modules in distribution kernels such as Android. Being able to control
the kernel ABI surface is particularly useful to ship a unique Generic
Kernel Image (GKI) for all vendors, which is a first step in the
direction of getting all vendors to contribute their code upstream.
As such, attempt to improve the situation by enabling users to specify a
symbol 'whitelist' at compile time. Any symbol specified in this
whitelist will be kept exported when CONFIG_TRIM_UNUSED_KSYMS is set,
even if it has no in-tree user. The whitelist is defined as a simple
text file, listing symbols, one per line.
[ BACKPORT: 60ae1b194b45 not present, sed 3rd line of modules.order ]
Bug: 148277666
Acked-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Tested-by: Matthias Maennich <maennich@google.com>
Reviewed-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/lkml/20200218094139.78835-2-qperret@google.com
Change-Id: Ie9a4bbb8eebb20202623f084859fb89e55a32698
2020-02-27 10:00:39 +00:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
2019-05-08 07:21:51 +02:00
scripts/dtc: consolidate include path options in Makefile
2018-08-22 23:21:36 +09:00
This is the 4.19.77 stable release
2019-10-06 11:27:45 +02:00
scripts/gdb: fix debugging modules compiled with hot/cold partitioning
2019-12-05 09:19:44 +01:00
genksyms: Teach parser about 128-bit built-in types
2019-07-31 07:27:02 +02:00
kconfig: fix broken dependency in randconfig-generated .config
2020-02-24 08:34:39 +01:00
Fix dead URLs to ftp.kernel.org
2017-03-28 16:16:52 +02:00
This is the 4.19.89 stable release
2019-12-13 10:01:10 +01:00
kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used
2019-04-17 08:38:45 +02:00
selinux: use kernel linux/socket.h for genheaders and mdp
2019-05-04 09:20:10 +02:00
scripts: Add Python 3 support to tracing/draw_functrace.py
2018-07-29 11:08:38 +09:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
BACKPORT: FROMLIST: kbuild: allow symbol whitelisting with TRIM_UNUSED_KSYMS
2020-02-27 10:00:39 +00:00
kbuild: rename *-asn1.[ch] to *.asn1.[ch]
2018-04-07 19:04:02 +09:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
2018-04-09 16:47:28 +02:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
bpf: change eBPF helper doc parsing script to allow for smaller indent
2018-05-17 17:34:43 +02:00
bpfilter: check compiler capability in Kconfig
2018-06-28 13:36:39 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
checkkconfigsymbols.py: support Kconfig's 'imply' statement
2017-02-03 11:49:06 +01:00
checkpatch: add __ro_after_init to known $Attribute
2018-09-04 16:45:02 -07:00
scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
2019-06-25 11:35:58 +08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple
2018-12-05 09:47:58 -08:00
kbuild: Add a space after ! to prevent parsing as file pattern
2018-08-22 23:21:40 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
coccicheck: return proper error code on fail
2018-08-14 08:58:56 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
const_structs.checkpatch: add frequently used from Julia Lawall's list
2016-10-11 15:06:30 -07:00
scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
2019-09-16 08:21:44 +02:00
scripts/decodecode: make it take multiline Code line
2018-01-31 17:18:34 -08:00
kbuild: modules_install: warn when missing System.map file
2018-09-09 09:14:07 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts/documentation-file-ref-check: ignore sched-pelt false positive
2018-07-02 11:25:00 -06:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts: teach extract-vmlinux about LZ4 and ZSTD
2018-07-08 09:32:32 +09:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
scripts/faddr2line: make the new code listing format optional
2018-06-05 09:04:37 -07:00
kbuild: Use ls(1) instead of stat(1) to obtain file size
2018-03-26 02:01:24 +09:00
scripts/find-unused-docs: Fix massive false positives
2020-02-11 04:34:01 -08:00
jump_label: move 'asm goto' support test to Kconfig
2019-06-04 08:02:34 +02:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stack-protector: test compiler capability in Kconfig and drop AUTO mode
2018-06-08 18:56:00 +09:00
stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
2018-06-25 23:21:13 +09:00
ANDROID: init: ensure initcall ordering with LTO
2019-11-27 12:37:20 -08:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
get_maintainer: allow option --mpath <directory> to read all files in <directory>
2018-08-22 10:52:48 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kbuild: Improve portability of some sed invocations
2018-03-26 02:01:18 +09:00
KEYS: Reserve an extra certificate symbol for inserting without recompiling
2016-02-26 15:30:20 +00:00
scripts/kallsyms: fix definitely-lost memory leak
2020-01-04 19:13:09 +01:00
x86/build: Remove jump label quirk for GCC older than 4.5.2
2018-08-30 11:37:08 +02:00
kbuild: use -S instead of -E for precise cc-option test in Kconfig
2020-02-24 08:34:50 +01:00
scripts/kernel-doc: Escape all literal braces in regexes
2018-08-06 13:36:20 -06:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
leaking_addresses: check if file name contains address
2018-04-07 08:50:34 +10:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
UPSTREAM: kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}
2020-02-27 10:00:39 +00:00
kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
2018-07-18 01:18:05 +09:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
FROMLIST: kbuild: fix dynamic ftrace with clang LTO
2019-05-20 17:43:20 -07:00
kbuild: remove deprecated host-progs variable
2018-08-09 21:51:17 +09:00
DeviceTree for 4.15:
2017-11-14 18:25:40 -08:00
Kbuild: suppress packed-not-aligned warning for default setting only
2018-01-18 09:37:53 +09:00
gcc-plugins: Regularize Makefile.gcc-plugins
2018-07-24 16:11:07 -07:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
2018-07-18 01:18:05 +09:00
BACKPORT: kasan: remove use after scope bugs detection.
2019-09-24 17:44:15 -07:00
kcov: test compiler capability in Kconfig and correct dependency
2018-06-11 09:14:08 +09:00
kbuild: disable dtc simple_bus_reg warnings by default
2019-12-13 08:52:18 +01:00
Kbuild: Makefile.modbuiltin: include auto.conf and tristate.conf mandatory
2018-08-03 00:47:00 +09:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
This is the 4.19.68 stable release
2019-08-25 14:19:34 +02:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
lib/ubsan: remove null-pointer checks
2018-08-10 20:19:58 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module: set .init_array alignment to 8
2017-03-13 09:40:28 -07:00
ANDROID: kbuild: merge module sections with LTO
2019-12-10 10:03:41 -08:00
namespace: fix namespace.pl script to support relative paths
2019-10-29 09:19:36 +01:00
scripts: objdiff: Ignore debug info when comparing
2017-03-11 11:13:38 +09:00
parse-maintainers: add ability to specify filenames
2017-11-17 16:10:01 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
This is the 4.19.100 stable release
2020-01-29 17:10:45 +01:00
recordmcount: Fix spurious mcount entries on powerpc
2019-07-31 07:27:03 +02:00
nds32/ftrace: Add RECORD_MCOUNT support
2018-09-04 14:45:18 +08:00
scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks
2019-11-06 13:05:27 +01:00
sign-file: fix build error in sign-file.c with libressl
2017-02-10 12:43:47 +11:00
powerpc: Build-time sort the exception table
2016-11-14 11:11:51 +11:00
scripts/spdxcheck.py: always open files in binary mode
2018-12-19 19:19:50 +01:00
treewide: correct "differenciate" and "instanciate" typos
2018-08-23 18:48:43 -07:00
scripts/sphinx-pre-install: fix script for RHEL/CentOS
2019-08-16 10:12:44 +02:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
selftests: add headers_install to lib.mk
2018-09-05 08:12:09 -06:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-07-18 19:32:54 -07:00
UPSTREAM: arm64: Add support for relocating the kernel with RELR relocations
2019-09-17 04:14:27 +00:00
unifdef: use memcpy instead of strncpy
2018-12-08 12:59:06 +01:00
ver_linux: Do not check for ver_linux pattern in version function
2018-07-07 17:44:52 +02:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
3d0431a87a