Re: [GIT PULL] Kbuild updates for v5.4-rc1

From: Jessica Yu
Date: Tue Sep 17 2019 - 11:09:12 EST

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+++ Masahiro Yamada [15/09/19 22:27 +0900]:

Hi Linus,

This is a Kbuild pull request for v5.4-rc1.
I am sending this a bit earlier.
Please pull it in when you open the merge window.

Thanks.

Hi Masahiro, Linus,

There is a merge conflict between the kbuild and modules-next tree.

Specifically, commits

69a94abb82e ("export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols")

and

9b9a3f20cbe ("kbuild: split final module linking out into Makefile.modfinal")

from the kbuild tree caused some conflicts in modules-next in
include/linux/export.h and scripts/Makefile.modpost. The conflict
caused by 69a94abb82e in export.h is *non* trivial whereas the latter
commit involving Makefile.modpost is trivial.

So there are a few options here..

Solution #1: Masahiro pops the topmost 4 commits (down to 69a94abb82e)
from kbuild/for-next and I take them resolved through modules-next.
This would only leave the trivial conflict in Makefile.modpost left.
Send Linus the modules-next tree with a trivial resolution for
Makefile.modpost.

Solution #2: Matthias Maennich staged a merge resolution from his tree
(https://github.com/metti/linux/tree/modules-next_linux-kbuild) so
another solution might be that I merge kbuild/for-next into
modules-next, take Matthias' (CC'd) conflict resolution including his
Signed-off-by, and then take that to Linus.

What would be most preferrable for you guys?

Thanks,

Jessica

The following changes since commit d45331b00ddb179e291766617259261c112db872:

Linux 5.3-rc4 (2019-08-11 13:26:41 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
tags/kbuild-v5.4

for you to fetch changes up to 77564a4829ef6d309331d443ea6ceb065f3dc371:

genksyms: convert to SPDX License Identifier for lex.l and parse.y
(2019-09-14 11:40:13 +0900)

----------------------------------------------------------------
Kbuild updates for v5.4

- add modpost warn exported symbols marked as 'static' because 'static'
and EXPORT_SYMBOL is an odd combination

- break the build early if gold linker is used

- optimize the Bison rule to produce .c and .h files by a single
pattern rule

- handle PREEMPT_RT in the module vermagic and UTS_VERSION

- warn CONFIG options leaked to the user-space except existing ones

- make single targets work properly

- rebuild modules when module linker scripts are updated

- split the module final link stage into scripts/Makefile.modfinal

- fix the missed error code in merge_config.sh

- improve the error message displayed on the attempt of the O= build
in unclean source tree

- remove 'clean-dirs' syntax

- disable -Wimplicit-fallthrough warning for Clang

- add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC

- remove ARCH_{CPP,A,C}FLAGS variables

- add $(BASH) to run bash scripts

- change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
instead of the basename

- stop suppressing Clang's -Wunused-function warnings when W=1

- fix linux/export.h to avoid genksyms calculating CRC of trimmed
exported symbols

- misc cleanups

----------------------------------------------------------------
Denis Efremov (2):
modpost: check for static EXPORT_SYMBOL* functions
modpost: add NOFAIL to strndup

Guillaume Tucker (1):
merge_config.sh: ignore unwanted grep errors

Heikki Krogerus (1):
modpost: add guid_t type definition

Kees Cook (1):
kbuild: Parameterize kallsyms generation and correct reporting

Mark Brown (1):
merge_config.sh: Check error codes from make

Masahiro Yamada (54):
kbuild: use $(basename ...) for cmd_asn1_compiler
kbuild: make bison create C file and header in a single pattern rule
kbuild: move flex and bison rules to Makefile.host
kbuild: add [M] marker for build log of *.mod.o
kbuild: treat an object as multi-used when $(foo-) is set
kbuild: move the Module.symvers check for external module build
kbuild: refactor part-of-module more
kbuild: fix modkern_aflags implementation
kbuild: remove 'make /' support
kbuild: remove meaningless 'targets' in ./Kbuild
kbuild: do not descend to ./Kbuild when cleaning
kbuild: unset variables in top Makefile instead of setting 0
kbuild: unify vmlinux-dirs and module-dirs rules
kbuild: unify clean-dirs rule for in-kernel and external module
kbuild: re-implement detection of CONFIG options leaked to user-space
kbuild: make single targets work more correctly
treewide: remove dummy Makefiles for single targets
kbuild: move KBUILD_LDS, KBUILD_VMLINUX_{OBJS,LIBS} to makefiles.rst
kbuild: rebuild modules when module linker scripts are updated
kbuild: split final module linking out into Makefile.modfinal
.gitignore: ignore modules.order explicitly
kbuild: add CONFIG_ASM_MODVERSIONS
kbuild: move modkern_{c,a}flags to Makefile.lib from Makefile.build
kbuild: pkg: clean up package files/dirs from the top Makefile
kbuild: pkg: add package targets to PHONY instead of FORCE
kbuild: pkg: rename scripts/package/Makefile to scripts/Makefile.package
kbuild: remove unneeded '+' marker from kselftest-merge
docs: kbuild: fix invalid ReST syntax
docs: kbuild: remove cc-ldoption from document again
init/Kconfig: rework help of CONFIG_CC_OPTIMIZE_FOR_SIZE
kbuild: remove unneeded comments and code from scripts/basic/Makefile
kbuild: remove unneeded dependency for $(DOC_TARGETS)
kbuild: get rid of $(realpath ...) from scripts/mkmakefile
kbuild: remove 'Using ... as source for kernel' message
kbuild: Inform user to pass ARCH= for make mrproper only when necessary
kbuild: clarify where to run make mrproper when out-of-tree fails
kbuild: move the clean srctree check to the outputmakefile target
kbuild: remove prepare3 target
kbuild: check clean srctree even earlier
kbuild: remove clean-dirs syntax
kbuild: remove unneeded '+' marker from cmd_clean
kbuild: clean up subdir-ymn calculation in Makefile.clean
kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
kbuild: remove ARCH_{CPP,A,C}FLAGS
kbuild: add $(BASH) to run scripts with bash-extension
kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)
kbuild: refactor scripts/Makefile.extrawarn
kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN
kbuild: allow Clang to find unused static inline functions for W=1 build
export.h: remove defined(__KERNEL__), which is no longer needed
export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols
modpost: use MODULE_INFO() for __module_depends
modpost: use __section in the output to *.mod.c
genksyms: convert to SPDX License Identifier for lex.l and parse.y

Nathan Chancellor (1):
kbuild: Do not enable -Wimplicit-fallthrough for clang for now

Thomas Gleixner (2):
kbuild: Fail if gold linker is detected
Kbuild: Handle PREEMPT_RT for version string and magic

.gitignore | 2 +-
Documentation/kbuild/kbuild.rst | 28 +--
Documentation/kbuild/makefiles.rst | 67 +++---
Kbuild | 7 -
Makefile | 296
+++++++++++++-------------
arch/Kconfig | 7 +
arch/alpha/Kconfig | 1 +
arch/arc/Makefile | 8 -
arch/arc/configs/axs101_defconfig | 1 +
arch/arc/configs/axs103_defconfig | 1 +
arch/arc/configs/axs103_smp_defconfig | 1 +
arch/arc/configs/haps_hs_defconfig | 1 +
arch/arc/configs/haps_hs_smp_defconfig | 1 +
arch/arc/configs/hsdk_defconfig | 1 +
arch/arc/configs/nps_defconfig | 1 +
arch/arc/configs/nsim_700_defconfig | 1 +
arch/arc/configs/nsim_hs_defconfig | 1 +
arch/arc/configs/nsim_hs_smp_defconfig | 1 +
arch/arc/configs/nsimosci_defconfig | 1 +
arch/arc/configs/nsimosci_hs_defconfig | 1 +
arch/arc/configs/nsimosci_hs_smp_defconfig | 1 +
arch/arc/configs/tb10x_defconfig | 1 +
arch/arc/configs/vdk_hs38_defconfig | 1 +
arch/arc/configs/vdk_hs38_smp_defconfig | 1 +
arch/arm/Makefile | 2 +-
arch/arm/kvm/Makefile | 5 +-
arch/arm64/Kconfig | 1 +
arch/arm64/Makefile | 2 +-
arch/ia64/Kconfig | 1 +
arch/ia64/Makefile | 2 +-
arch/m68k/Kconfig | 1 +
arch/m68k/Makefile | 2 +-
arch/mips/Kconfig | 1 +
arch/mips/boot/Makefile | 2 +-
arch/parisc/Makefile | 2 +-
arch/powerpc/Kconfig | 1 +
arch/powerpc/Makefile | 2 +-
arch/powerpc/Makefile.postlink | 2 +-
arch/powerpc/kernel/prom_init_check.sh | 2 +-
arch/riscv/Kconfig | 1 +
arch/riscv/Makefile | 2 +-
arch/s390/Kconfig | 1 +
arch/sparc/Kconfig | 1 +
arch/um/Kconfig | 1 +
arch/x86/Kconfig | 1 +
arch/x86/entry/vdso/Makefile | 3 +-
drivers/gpu/drm/amd/display/dc/calcs/Makefile | 6 +-
drivers/gpu/drm/amd/display/dc/dcn20/Makefile | 2 +-
drivers/gpu/drm/amd/display/dc/dml/Makefile | 17 +-
drivers/gpu/drm/amd/display/dc/dsc/Makefile | 7 +-
drivers/gpu/drm/i915/Makefile | 2 +-
drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/en/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile | 1 -
drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile | 2 -
drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile | 2 -
drivers/net/ethernet/netronome/nfp/bpf/Makefile | 2 -
drivers/net/ethernet/netronome/nfp/flower/Makefile | 2 -
drivers/net/ethernet/netronome/nfp/nfpcore/Makefile | 2 -
drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile | 2 -
drivers/net/ethernet/netronome/nfp/nic/Makefile | 2 -
include/linux/compiler_types.h | 20 +-
include/linux/export.h | 42 ++--
include/linux/vermagic.h | 2 +
init/Kconfig | 26 ++-
init/Makefile | 5 +-
kernel/Makefile | 2 +-
scripts/Kconfig.include | 3 +
scripts/Makefile | 2 +-
scripts/Makefile.build | 73 ++++---
scripts/Makefile.clean | 31 +--
scripts/Makefile.extrawarn | 121 ++++++-----
scripts/Makefile.host | 39 +++-
scripts/Makefile.lib | 63 +++---
scripts/Makefile.modfinal | 60 ++++++
scripts/Makefile.modpost | 80 ++-----
scripts/{package/Makefile => Makefile.package} | 43 ++--
scripts/basic/Makefile | 14 +-
scripts/genksyms/Makefile | 11 +-
scripts/genksyms/keywords.c | 6 +-
scripts/genksyms/lex.l | 32 +--
scripts/genksyms/parse.y | 32 +--
scripts/headers_install.sh | 72 +++++++
scripts/kconfig/Makefile | 10 +-
scripts/kconfig/merge_config.sh | 12 +-
scripts/link-vmlinux.sh | 38 ++--
scripts/mkcompile_h | 4 +-
scripts/mkmakefile | 4 +-
scripts/mod/file2alias.c | 5 +
scripts/mod/modpost.c | 48 ++++-
usr/include/Makefile | 4 +-
95 files changed, 755 insertions(+), 680 deletions(-)
delete mode 100644 drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile
delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile
delete mode 100644 drivers/net/ethernet/netronome/nfp/bpf/Makefile
delete mode 100644 drivers/net/ethernet/netronome/nfp/flower/Makefile
delete mode 100644 drivers/net/ethernet/netronome/nfp/nfpcore/Makefile
delete mode 100644 drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile
delete mode 100644 drivers/net/ethernet/netronome/nfp/nic/Makefile
create mode 100644 scripts/Makefile.modfinal
rename scripts/{package/Makefile => Makefile.package} (92%)

--
Best Regards
Masahiro Yamada

Next message: Sebastian Andrzej Siewior: "Re: [PATCH RT 5/8] sched/deadline: Reclaim cpuset bandwidth in .migrate_task_rq()"
Previous message: Catalin Marinas: "Re: [PATCH V7 3/3] arm64/mm: Enable memory hot remove"
Next in thread: Masahiro Yamada: "Re: [GIT PULL] Kbuild updates for v5.4-rc1"
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