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Kbuild updates for v5.3 (2nd)

Browse Source 
- match the directory structure of the linux-libc-dev package to that of
   Debian-based distributions
 
 - fix incorrect include/config/auto.conf generation when Kconfig creates
   it along with the .config file
 
 - remove misleading $(AS) from documents
 
 - clean up precious tag files by distclean instead of mrproper
 
 - add a new coccinelle patch for devm_platform_ioremap_resource migration
 
 - refactor module-related scripts to read modules.order instead of
   $(MODVERDIR)/*.mod files to get the list of created modules
 
 - remove MODVERDIR
 
 - update list of header compile-test
 
 - add -fcf-protection=none flag to avoid conflict with the retpoline
   flags when CONFIG_RETPOLINE=y
 
 - misc cleanups
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Merge tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - match the directory structure of the linux-libc-dev package to that
   of Debian-based distributions

 - fix incorrect include/config/auto.conf generation when Kconfig
   creates it along with the .config file

 - remove misleading $(AS) from documents

 - clean up precious tag files by distclean instead of mrproper

 - add a new coccinelle patch for devm_platform_ioremap_resource
   migration

 - refactor module-related scripts to read modules.order instead of
   $(MODVERDIR)/*.mod files to get the list of created modules

 - remove MODVERDIR

 - update list of header compile-test

 - add -fcf-protection=none flag to avoid conflict with the retpoline
   flags when CONFIG_RETPOLINE=y

 - misc cleanups

* tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: add -fcf-protection=none when using retpoline flags
  kbuild: update compile-test header list for v5.3-rc1
  kbuild: split out *.mod out of {single,multi}-used-m rules
  kbuild: remove 'prepare1' target
  kbuild: remove the first line of *.mod files
  kbuild: create *.mod with full directory path and remove MODVERDIR
  kbuild: export_report: read modules.order instead of .tmp_versions/*.mod
  kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod
  scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver
  kbuild: remove duplication from modules.order in sub-directories
  kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}
  kbuild: do not create empty modules.order in the prepare stage
  coccinelle: api: add devm_platform_ioremap_resource script
  kbuild: compile-test headers listed in header-test-m as well
  kbuild: remove unused hostcc-option
  kbuild: remove tag files by distclean instead of mrproper
  kbuild: add --hash-style= and --build-id unconditionally
  kbuild: get rid of misleading $(AS) from documents
  ...
This commit is contained in:
Linus Torvalds 2019-07-20 09:34:55 -07:00
commit 168c79971b
36 changed files with 178 additions and 173 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored
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@ -30,6 +30,7 @@
*.lz4
*.lzma
*.lzo
*.mod
*.mod.c
*.o
*.o.*

1
Documentation/dontdiff
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@ -30,6 +30,7 @@
*.lzo
*.mo
*.moc
*.mod
*.mod.c
*.o
*.o.*

5
Documentation/kbuild/kbuild.rst
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@ -38,12 +38,11 @@ Additional options to the assembler (for built-in and modules).
AFLAGS_MODULE
-------------
Additional module specific options to use for $(AS).
Additional assembler options for modules.
AFLAGS_KERNEL
-------------
Additional options for $(AS) when used for assembler
code for code that is compiled as built-in.
Additional assembler options for built-in.
KCFLAGS
-------

12
Documentation/kbuild/makefiles.rst
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@ -328,7 +328,7 @@ more details, with real examples.
variable $(KBUILD_CFLAGS) and uses it for compilation flags for the
entire tree.
asflags-y specifies options for assembling with $(AS).
asflags-y specifies assembler options.
Example::
@ -490,7 +490,7 @@ more details, with real examples.
as-instr checks if the assembler reports a specific instruction
and then outputs either option1 or option2
C escapes are supported in the test instruction
Note: as-instr-option uses KBUILD_AFLAGS for $(AS) options
Note: as-instr-option uses KBUILD_AFLAGS for assembler options
cc-option
cc-option is used to check if $(CC) supports a given option, and if
@ -906,7 +906,7 @@ When kbuild executes, the following steps are followed (roughly):
vmlinux. The usage of $(call if_changed,xxx) will be described later.
KBUILD_AFLAGS
$(AS) assembler flags
Assembler flags
Default value - see top level Makefile
Append or modify as required per architecture.
@ -949,16 +949,16 @@ When kbuild executes, the following steps are followed (roughly):
to 'y' when selected.
KBUILD_AFLAGS_KERNEL
$(AS) options specific for built-in
Assembler options specific for built-in
$(KBUILD_AFLAGS_KERNEL) contains extra C compiler flags used to compile
resident kernel code.
KBUILD_AFLAGS_MODULE
Options for $(AS) when building modules
Assembler options specific for modules
$(KBUILD_AFLAGS_MODULE) is used to add arch-specific options that
are used for $(AS).
are used for assembler.
From commandline AFLAGS_MODULE shall be used (see kbuild.txt).

61
Makefile
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@ -486,11 +486,6 @@ export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
export KBUILD_ARFLAGS
# When compiling out-of-tree modules, put MODVERDIR in the module
# tree rather than in the kernel tree. The kernel tree might
# even be read-only.
export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
# Files to ignore in find ... statements
export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
@ -887,6 +882,12 @@ KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init)
# change __FILE__ to the relative path from the srctree
KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
# ensure -fcf-protection is disabled when using retpoline as it is
# incompatible with -mindirect-branch=thunk-extern
ifdef CONFIG_RETPOLINE
KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none)
endif
# use the deterministic mode of AR if available
KBUILD_ARFLAGS := $(call ar-option,D)
@ -900,10 +901,8 @@ KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
# Use --build-id when available.
LDFLAGS_BUILD_ID := $(call ld-option, --build-id)
KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
KBUILD_LDFLAGS_MODULE += --build-id
LDFLAGS_vmlinux += --build-id
ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
LDFLAGS_vmlinux += $(call ld-option, -X,)
@ -1031,8 +1030,8 @@ vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
# Recurse until adjust_autoksyms.sh is satisfied
PHONY += autoksyms_recursive
autoksyms_recursive: $(vmlinux-deps)
ifdef CONFIG_TRIM_UNUSED_KSYMS
autoksyms_recursive: $(vmlinux-deps) modules.order
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
"$(MAKE) -f $(srctree)/Makefile vmlinux"
endif
@ -1074,7 +1073,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
PHONY += $(vmlinux-dirs)
$(vmlinux-dirs): prepare
$(Q)$(MAKE) $(build)=$@ need-builtin=1
$(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1
filechk_kernel.release = \
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
@ -1096,7 +1095,7 @@ scripts: scripts_basic scripts_dtc
# archprepare is used in arch Makefiles and when processed asm symlink,
# version.h and scripts_basic is processed / created.
PHONY += prepare archprepare prepare1 prepare3
PHONY += prepare archprepare prepare3
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
@ -1113,11 +1112,8 @@ ifdef building_out_of_srctree
fi;
endif
prepare1: prepare3 outputmakefile asm-generic $(version_h) $(autoksyms_h) \
include/generated/utsrelease.h
$(cmd_crmodverdir)
archprepare: archheaders archscripts prepare1 scripts
archprepare: archheaders archscripts scripts prepare3 outputmakefile \
asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h
prepare0: archprepare
$(Q)$(MAKE) $(build)=scripts/mod
@ -1331,8 +1327,8 @@ _modinst_:
rm -f $(MODLIB)/build ; \
ln -s $(CURDIR) $(MODLIB)/build ; \
fi
@cp -f $(objtree)/modules.order $(MODLIB)/
@cp -f $(objtree)/modules.builtin $(MODLIB)/
@sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order
@sed 's:^:kernel/:' modules.builtin > $(MODLIB)/modules.builtin
@cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
@ -1373,18 +1369,22 @@ endif # CONFIG_MODULES
# make distclean Remove editor backup files, patch leftover files and the like
# Directories & files removed with 'make clean'
CLEAN_DIRS += $(MODVERDIR) include/ksym
CLEAN_DIRS += include/ksym
CLEAN_FILES += modules.builtin.modinfo
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config include/generated \
arch/$(SRCARCH)/include/generated .tmp_objdiff
MRPROPER_FILES += .config .config.old .version \
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
Module.symvers \
signing_key.pem signing_key.priv signing_key.x509 \
x509.genkey extra_certificates signing_key.x509.keyid \
signing_key.x509.signer vmlinux-gdb.py
# Directories & files removed with 'make distclean'
DISTCLEAN_DIRS +=
DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
# clean - Delete most, but leave enough to build external modules
#
clean: rm-dirs := $(CLEAN_DIRS)
@ -1417,9 +1417,14 @@ mrproper: clean $(mrproper-dirs)
# distclean
#
distclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS))
distclean: rm-files := $(wildcard $(DISTCLEAN_FILES))
PHONY += distclean
distclean: mrproper
$(call cmd,rmdirs)
$(call cmd,rmfiles)
@find $(srctree) $(RCS_FIND_IGNORE) \
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
-o -name '*.bak' -o -name '#*#' -o -name '*%' \
@ -1609,7 +1614,7 @@ $(objtree)/Module.symvers:
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
PHONY += $(module-dirs) modules
$(module-dirs): prepare $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) need-modorder=1
modules: $(module-dirs)
@$(kecho) ' Building modules, stage 2.';
@ -1634,7 +1639,6 @@ PHONY += $(clean-dirs) clean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
clean: rm-dirs := $(MODVERDIR)
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
PHONY += help
@ -1648,8 +1652,6 @@ help:
@echo ''
PHONY += prepare
prepare:
$(cmd_crmodverdir)
endif # KBUILD_EXTMOD
clean: $(clean-dirs)
@ -1660,7 +1662,7 @@ clean: $(clean-dirs)
-o -name '*.ko.*' \
-o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
-o -name '*.dwo' -o -name '*.lst' \
-o -name '*.su' \
-o -name '*.su' -o -name '*.mod' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
-o -name '*.lex.c' -o -name '*.tab.[ch]' \
-o -name '*.asn1.[ch]' \
@ -1765,8 +1767,6 @@ build-dir = $(patsubst %/,%,$(dir $(build-target)))
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.symtypes: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.ko: %.o
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Modules
PHONY += /
@ -1789,11 +1789,6 @@ quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
$(KERNELRELEASE)
# Create temporary dir for module support files
# clean it up only when building all modules
cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
$(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
# read saved command lines for existing targets
existing-targets := $(wildcard $(sort $(targets)))

3
arch/arm/vdso/Makefile
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@ -13,8 +13,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING
ldflags-$(CONFIG_CPU_ENDIAN_BE8) := --be8
ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \
-z max-page-size=4096 -nostdlib -shared $(ldflags-y) \
$(call ld-option, --hash-style=sysv) \
$(call ld-option, --build-id) \
--hash-style=sysv --build-id \
-T
obj-$(CONFIG_VDSO) += vdso.o

4
arch/arm64/kernel/vdso32/Makefile
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@ -96,8 +96,8 @@ VDSO_LDFLAGS := $(VDSO_CPPFLAGS)
VDSO_LDFLAGS += -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1
VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
VDSO_LDFLAGS += -nostdlib -shared -mfloat-abi=soft
VDSO_LDFLAGS += $(call cc32-ldoption,-Wl$(comma)--hash-style=sysv)
VDSO_LDFLAGS += $(call cc32-ldoption,-Wl$(comma)--build-id)
VDSO_LDFLAGS += -Wl,--hash-style=sysv
VDSO_LDFLAGS += -Wl,--build-id
VDSO_LDFLAGS += $(call cc32-ldoption,-fuse-ld=bfd)

2
arch/riscv/Makefile
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@ -34,8 +34,6 @@ else
KBUILD_LDFLAGS += -melf32lriscv
endif
KBUILD_CFLAGS += -Wall
# ISA string setting
riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima

3
arch/sparc/vdso/Makefile
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@ -115,8 +115,7 @@ quiet_cmd_vdso = VDSO $@
-T $(filter %.lds,$^) $(filter %.o,$^) && \
sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@'
VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
$(call ld-option, --build-id) -Bsymbolic
VDSO_LDFLAGS = -shared --hash-style=both --build-id -Bsymbolic
GCOV_PROFILE := n
#

5
arch/x86/entry/vdso/Makefile
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@ -176,9 +176,8 @@ quiet_cmd_vdso = VDSO $@
-T $(filter %.lds,$^) $(filter %.o,$^) && \
sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
$(call ld-option, --build-id) $(call ld-option, --eh-frame-hdr) \
-Bsymbolic
VDSO_LDFLAGS = -shared --hash-style=both --build-id \
$(call ld-option, --eh-frame-hdr) -Bsymbolic
GCOV_PROFILE := n
quiet_cmd_vdso_and_check = VDSO $@

1
drivers/memory/.gitignore vendored Normal file
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@ -0,0 +1 @@
ti-emif-asm-offsets.h

5
drivers/memory/Makefile
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@ -29,9 +29,10 @@ ti-emif-sram-objs := ti-emif-pm.o ti-emif-sram-pm.o
AFLAGS_ti-emif-sram-pm.o :=-Wa,-march=armv7-a
drivers/memory/ti-emif-sram-pm.o: include/generated/ti-emif-asm-offsets.h
$(obj)/ti-emif-sram-pm.o: $(obj)/ti-emif-asm-offsets.h
include/generated/ti-emif-asm-offsets.h: drivers/memory/emif-asm-offsets.s FORCE
$(obj)/ti-emif-asm-offsets.h: $(obj)/emif-asm-offsets.s FORCE
$(call filechk,offsets,__TI_EMIF_ASM_OFFSETS_H__)
targets += emif-asm-offsets.s
clean-files += ti-emif-asm-offsets.h

2
drivers/memory/ti-emif-sram-pm.S
View File

@ -14,12 +14,12 @@
* GNU General Public License for more details.
*/
#include <generated/ti-emif-asm-offsets.h>
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/memory.h>
#include "emif.h"
#include "ti-emif-asm-offsets.h"
#define EMIF_POWER_MGMT_WAIT_SELF_REFRESH_8192_CYCLES 0x00a0
#define EMIF_POWER_MGMT_SR_TIMER_MASK 0x00f0

2
drivers/scsi/Makefile
View File

@ -185,7 +185,7 @@ zalon7xx-objs := zalon.o ncr53c8xx.o
# Files generated that shall be removed upon make clean
clean-files := 53c700_d.h 53c700_u.h scsi_devinfo_tbl.c
$(obj)/53c700.o $(MODVERDIR)/$(obj)/53c700.ver: $(obj)/53c700_d.h
$(obj)/53c700.o: $(obj)/53c700_d.h
$(obj)/scsi_sysfs.o: $(obj)/scsi_devinfo_tbl.c

14
include/Kbuild
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@ -31,7 +31,7 @@ header-test- += acpi/platform/acintel.h
header-test- += acpi/platform/aclinux.h
header-test- += acpi/platform/aclinuxex.h
header-test- += acpi/processor.h
header-test- += clocksource/hyperv_timer.h
header-test-$(CONFIG_X86) += clocksource/hyperv_timer.h
header-test- += clocksource/timer-sp804.h
header-test- += crypto/cast_common.h
header-test- += crypto/internal/cryptouser.h
@ -246,6 +246,7 @@ header-test- += linux/intel-pti.h
header-test- += linux/intel-svm.h
header-test- += linux/interconnect-provider.h
header-test- += linux/ioc3.h
header-test-$(CONFIG_BLOCK) += linux/iomap.h
header-test- += linux/ipack.h
header-test- += linux/irq_cpustat.h
header-test- += linux/irq_poll.h
@ -454,9 +455,6 @@ header-test- += linux/phy/omap_control_phy.h
header-test- += linux/phy/tegra/xusb.h
header-test- += linux/phy/ulpi_phy.h
header-test- += linux/phy_fixed.h
header-test- += linux/pinctrl/pinconf-generic.h
header-test- += linux/pinctrl/pinconf.h
header-test- += linux/pinctrl/pinctrl.h
header-test- += linux/pipe_fs_i.h
header-test- += linux/pktcdvd.h
header-test- += linux/pl320-ipc.h
@ -905,10 +903,11 @@ header-test- += net/netfilter/nf_nat_redirect.h
header-test- += net/netfilter/nf_queue.h
header-test- += net/netfilter/nf_reject.h
header-test- += net/netfilter/nf_synproxy.h
header-test- += net/netfilter/nf_tables.h
header-test- += net/netfilter/nf_tables_core.h
header-test- += net/netfilter/nf_tables_ipv4.h
header-test-$(CONFIG_NF_TABLES) += net/netfilter/nf_tables.h
header-test-$(CONFIG_NF_TABLES) += net/netfilter/nf_tables_core.h
header-test-$(CONFIG_NF_TABLES) += net/netfilter/nf_tables_ipv4.h
header-test- += net/netfilter/nf_tables_ipv6.h
header-test-$(CONFIG_NF_TABLES) += net/netfilter/nf_tables_offload.h
header-test- += net/netfilter/nft_fib.h
header-test- += net/netfilter/nft_meta.h
header-test- += net/netfilter/nft_reject.h
@ -949,7 +948,6 @@ header-test- += pcmcia/ds.h
header-test- += rdma/ib.h
header-test- += rdma/iw_portmap.h
header-test- += rdma/opa_port_info.h
header-test- += rdma/rdma_counter.h
header-test- += rdma/rdmavt_cq.h
header-test- += rdma/restrack.h
header-test- += rdma/signature.h

12
lib/Kconfig.debug
View File

@ -353,23 +353,13 @@ config DEBUG_SECTION_MISMATCH
which results in the code/data being placed in specific sections.
The section mismatch analysis is always performed after a full
kernel build, and enabling this option causes the following
additional steps to occur:
additional step to occur:
- Add the option -fno-inline-functions-called-once to gcc commands.
When inlining a function annotated with __init in a non-init
function, we would lose the section information and thus
the analysis would not catch the illegal reference.
This option tells gcc to inline less (but it does result in
a larger kernel).
- Run the section mismatch analysis for each module/built-in.a file.
When we run the section mismatch analysis on vmlinux.o, we
lose valuable information about where the mismatch was
introduced.
Running the analysis for each module/built-in.a file
tells where the mismatch happens much closer to the
source. The drawback is that the same mismatch is
reported at least twice.
- Enable verbose reporting from modpost in order to help resolve
the section mismatches that are reported.
config SECTION_MISMATCH_WARN_ONLY
bool "Make section mismatch errors non-fatal"

5
scripts/Kbuild.include
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@ -125,11 +125,6 @@ CC_OPTION_CFLAGS = $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
cc-option = $(call __cc-option, $(CC),\
$(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS),$(1),$(2))
# hostcc-option
# Usage: cflags-y += $(call hostcc-option,-march=winchip-c6,-march=i586)
hostcc-option = $(call __cc-option, $(HOSTCC),\
$(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS),$(1),$(2))
# cc-option-yn
# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
cc-option-yn = $(call try-run,\

42
scripts/Makefile.build
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@ -63,14 +63,14 @@ ifneq ($(strip $(real-obj-y) $(need-builtin)),)
builtin-target := $(obj)/built-in.a
endif
ifdef CONFIG_MODULES
ifeq ($(CONFIG_MODULES)$(need-modorder),y1)
modorder-target := $(obj)/modules.order
endif
# We keep a list of all modules in $(MODVERDIR)
mod-targets := $(patsubst %.o, %.mod, $(obj-m))
__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
$(if $(KBUILD_MODULES),$(obj-m) $(modorder-target)) \
$(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
$(subdir-ym) $(always)
@:
@ -87,11 +87,6 @@ ifneq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
endif
# Do section mismatch analysis for each module/built-in.a
ifdef CONFIG_DEBUG_SECTION_MISMATCH
cmd_secanalysis = ; scripts/mod/modpost $@
endif
# Compile C sources (.c)
# ---------------------------------------------------------------------------
@ -268,7 +263,7 @@ endef
# List module undefined symbols (or empty line if not enabled)
ifdef CONFIG_TRIM_UNUSED_KSYMS
cmd_undef_syms = $(NM) $@ | sed -n 's/^ *U //p' | xargs echo
cmd_undef_syms = $(NM) $< | sed -n 's/^ *U //p' | xargs echo
else
cmd_undef_syms = echo
endif
@ -278,13 +273,15 @@ $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
$(call cmd,force_checksrc)
$(call if_changed_rule,cc_o_c)
# Single-part modules are special since we need to mark them in $(MODVERDIR)
cmd_mod = { \
echo $(if $($*-objs)$($*-y)$($*-m), $(addprefix $(obj)/, $($*-objs) $($*-y) $($*-m)), $(@:.mod=.o)); \
$(cmd_undef_syms); \
} > $@
$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
$(call cmd,force_checksrc)
$(call if_changed_rule,cc_o_c)
@{ echo $(@:.o=.ko); echo $@; \
$(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod)
$(obj)/%.mod: $(obj)/%.o FORCE
$(call if_changed,mod)
targets += $(mod-targets)
quiet_cmd_cc_lst_c = MKLST $@
cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
@ -294,7 +291,7 @@ quiet_cmd_cc_lst_c = MKLST $@
$(obj)/%.lst: $(src)/%.c FORCE
$(call if_changed_dep,cc_lst_c)
# header test (header-test-y target)
# header test (header-test-y, header-test-m target)
# ---------------------------------------------------------------------------
quiet_cmd_cc_s_h = CC $@
@ -423,13 +420,10 @@ endif # builtin-target
#
# Create commands to either record .ko file or cat modules.order from
# a subdirectory
modorder-cmds = \
$(foreach m, $(modorder), \
$(if $(filter %/modules.order, $m), \
cat $m;, echo kernel/$m;))
$(modorder-target): $(subdir-ym) FORCE
$(Q)(cat /dev/null; $(modorder-cmds)) > $@
$(Q){ $(foreach m, $(modorder), \
$(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
| $(AWK) '!x[$$0]++' - > $@
#
# Rule to compile a set of .o files into one .a file (with symbol table)
@ -464,12 +458,10 @@ endif
# module is turned into a multi object module, $^ will contain header file
# dependencies recorded in the .*.cmd file.
quiet_cmd_link_multi-m = LD [M] $@
cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^) $(cmd_secanalysis)
cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^)
$(multi-used-m): FORCE
$(call if_changed,link_multi-m)
@{ echo $(@:.o=.ko); echo $(filter %.o,$^); \
$(cmd_undef_syms); } > $(MODVERDIR)/$(@F:.o=.mod)
$(call multi_depend, $(multi-used-m), .o, -objs -y -m)
targets += $(multi-used-m)

2
scripts/Makefile.lib
View File

@ -78,7 +78,7 @@ header-test-y += $(filter-out $(header-test-), \
$(wildcard $(addprefix $(srctree)/$(src)/, \
$(header-test-pattern-y)))))
extra-$(CONFIG_HEADER_TEST) += $(addsuffix .s, $(header-test-y))
extra-$(CONFIG_HEADER_TEST) += $(addsuffix .s, $(header-test-y) $(header-test-m))
# Add subdir path

2
scripts/Makefile.modbuiltin
View File

@ -40,7 +40,7 @@ __modbuiltin: $(modbuiltin-target) $(subdir-ym)
@:
$(modbuiltin-target): $(subdir-ym) FORCE
$(Q)(for m in $(modbuiltin-mods); do echo kernel/$$m; done; \
$(Q)(for m in $(modbuiltin-mods); do echo $$m; done; \
cat /dev/null $(modbuiltin-subdirs)) > $@
PHONY += FORCE

5
scripts/Makefile.modinst
View File

@ -8,10 +8,7 @@ __modinst:
include scripts/Kbuild.include
#
__modules := $(sort $(shell grep -h '\.ko$$' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
modules := $(sort $(shell cat $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order))
PHONY += $(modules)
__modinst: $(modules)

19
scripts/Makefile.modpost
View File

@ -6,11 +6,12 @@
# Stage one of module building created the following:
# a) The individual .o files used for the module
# b) A <module>.o file which is the .o files above linked together
# c) A <module>.mod file in $(MODVERDIR)/, listing the name of the
# the preliminary <module>.o file, plus all .o files
# c) A <module>.mod file, listing the name of the preliminary <module>.o file,
# plus all .o files
# d) modules.order, which lists all the modules
# Stage 2 is handled by this file and does the following
# 1) Find all modules from the files listed in $(MODVERDIR)/
# 1) Find all modules listed in modules.order
# 2) modpost is then used to
# 3) create one <module>.mod.c file pr. module
# 4) create one Module.symvers file with CRC for all exported symbols
@ -60,10 +61,12 @@ include scripts/Makefile.lib
kernelsymfile := $(objtree)/Module.symvers
modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
# Step 1), find all modules listed in $(MODVERDIR)/
MODLISTCMD := find $(MODVERDIR) -name '*.mod' | xargs -r grep -h '\.ko$$' | sort -u
__modules := $(shell $(MODLISTCMD))
modules := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))
modorder := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
# Step 1), find all modules listed in modules.order
ifdef CONFIG_MODULES
modules := $(sort $(shell cat $(modorder)))
endif
# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
@ -84,7 +87,7 @@ MODPOST_OPT=$(subst -i,-n,$(filter -i,$(MAKEFLAGS)))
# We can go over command line length here, so be careful.
quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
cmd_modpost = $(MODLISTCMD) | sed 's/\.ko$$/.o/' | $(modpost) $(MODPOST_OPT) -s -T -
cmd_modpost = sed 's/ko$$/o/' $(modorder) | $(modpost) $(MODPOST_OPT) -s -T -
PHONY += __modpost
__modpost: $(modules:.ko=.o) FORCE

3
scripts/Makefile.modsign
View File

@ -8,8 +8,7 @@ __modsign:
include scripts/Kbuild.include
__modules := $(sort $(shell grep -h '\.ko$$' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
modules := $(sort $(shell cat modules.order))
PHONY += $(modules)
__modsign: $(modules)

14
scripts/adjust_autoksyms.sh
View File

@ -8,8 +8,7 @@
#
# Create/update the include/generated/autoksyms.h file from the list
# of all module's needed symbols as recorded on the third line of
# .tmp_versions/*.mod files.
# of all module's needed symbols as recorded on the second line of *.mod files.
#
# For each symbol being added or removed, the corresponding dependency
# file's timestamp is updated to force a rebuild of the affected source
@ -47,13 +46,10 @@ cat > "$new_ksyms_file" << EOT
*/
EOT
[ "$(ls -A "$MODVERDIR")" ] &&
for mod in "$MODVERDIR"/*.mod; do
sed -n -e '3{s/ /\n/g;/^$/!p;}' "$mod"
done | sort -u |
while read sym; do
echo "#define __KSYM_${sym} 1"
done >> "$new_ksyms_file"
sed 's/ko$/mod/' modules.order |
xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
sort -u |
sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$new_ksyms_file"
# Special case for modversions (see modpost.c)
if [ -n "$CONFIG_MODVERSIONS" ]; then

60
scripts/coccinelle/api/devm_platform_ioremap_resource.cocci Normal file
View File

@ -0,0 +1,60 @@
// SPDX-License-Identifier: GPL-2.0
/// Use devm_platform_ioremap_resource helper which wraps
/// platform_get_resource() and devm_ioremap_resource() together.
///
// Confidence: High
// Copyright: (C) 2019 Himanshu Jha GPLv2.
// Copyright: (C) 2019 Julia Lawall, Inria/LIP6. GPLv2.
// Keywords: platform_get_resource, devm_ioremap_resource,
// Keywords: devm_platform_ioremap_resource
virtual patch
virtual report
@r depends on patch && !report@
expression e1, e2, arg1, arg2, arg3;
identifier id;
@@
(
- id = platform_get_resource(arg1, IORESOURCE_MEM, arg2);
|
- struct resource *id = platform_get_resource(arg1, IORESOURCE_MEM, arg2);
)
... when != id
- e1 = devm_ioremap_resource(arg3, id);
+ e1 = devm_platform_ioremap_resource(arg1, arg2);
... when != id
? id = e2
@r1 depends on patch && !report@
identifier r.id;
type T;
@@
- T *id;
...when != id
@r2 depends on report && !patch@
identifier id;
expression e1, e2, arg1, arg2, arg3;
position j0;
@@
(
id = platform_get_resource(arg1, IORESOURCE_MEM, arg2);
|
struct resource *id = platform_get_resource(arg1, IORESOURCE_MEM, arg2);
)
... when != id
e1@j0 = devm_ioremap_resource(arg3, id);
... when != id
? id = e2
@script:python depends on report && !patch@
e1 << r2.e1;
j0 << r2.j0;
@@
msg = "WARNING: Use devm_platform_ioremap_resource for %s" % (e1)
coccilib.report.print_report(j0[0], msg)

11
scripts/export_report.pl
View File

@ -52,13 +52,12 @@ sub usage {
sub collectcfiles {
my @file;
while (<.tmp_versions/*.mod>) {
open my $fh, '<', $_ or die "cannot open $_: $!\n";
push (@file,
grep s/\.ko/.mod.c/, # change the suffix
grep m/.+\.ko/, # find the .ko path
<$fh>); # lines in opened file
open my $fh, '< modules.order' or die "cannot open modules.order: $!\n";
while (<$fh>) {
s/\.ko$/.mod.c/;
push (@file, $_)
}
close($fh);
chomp @file;
return @file;
}

2
scripts/kconfig/Makefile
View File

@ -94,7 +94,7 @@ configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/c
%.config: $(obj)/conf
$(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
+$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
PHONY += kvmconfig
kvmconfig: kvm_guest.config

7
scripts/kconfig/confdata.c
View File

@ -895,7 +895,8 @@ int conf_write(const char *name)
"# %s\n"
"#\n", str);
need_newline = false;
} else if (!(sym->flags & SYMBOL_CHOICE)) {
} else if (!(sym->flags & SYMBOL_CHOICE) &&
!(sym->flags & SYMBOL_WRITTEN)) {
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE))
goto next;
@ -903,7 +904,7 @@ int conf_write(const char *name)
fprintf(out, "\n");
need_newline = false;
}
sym->flags &= ~SYMBOL_WRITE;
sym->flags |= SYMBOL_WRITTEN;
conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
}
@ -1063,8 +1064,6 @@ int conf_write_autoconf(int overwrite)
if (!overwrite && is_present(autoconf_name))
return 0;
sym_clear_all_valid();
conf_write_dep("include/config/auto.conf.cmd");
if (conf_touch_deps())

1
scripts/kconfig/expr.h
View File

@ -141,6 +141,7 @@ struct symbol {
#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
#define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */
#define SYMBOL_CHANGED 0x0400 /* ? */
#define SYMBOL_WRITTEN 0x0800 /* track info to avoid double-write to .config */
#define SYMBOL_NO_WRITE 0x1000 /* Symbol for internal use only; it will not be written */
#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
#define SYMBOL_WARNED 0x8000 /* warning has been issued */

23
scripts/mod/sumversion.c
View File

@ -396,34 +396,19 @@ void get_src_version(const char *modname, char sum[], unsigned sumlen)
unsigned long len;
struct md4_ctx md;
char *sources, *end, *fname;
const char *basename;
char filelist[PATH_MAX + 1];
char *modverdir = getenv("MODVERDIR");
if (!modverdir)
modverdir = ".";
/* Source files for module are in .tmp_versions/modname.mod,
after the first line. */
if (strrchr(modname, '/'))
basename = strrchr(modname, '/') + 1;
else
basename = modname;
snprintf(filelist, sizeof(filelist), "%s/%.*s.mod", modverdir,
(int) strlen(basename) - 2, basename);
/* objects for a module are listed in the first line of *.mod file. */
snprintf(filelist, sizeof(filelist), "%.*smod",
(int)strlen(modname) - 1, modname);
file = grab_file(filelist, &len);
if (!file)
/* not a module or .mod file missing - ignore */
return;
sources = strchr(file, '\n');
if (!sources) {
warn("malformed versions file for %s\n", modname);
goto release;
}
sources = file;
sources++;
end = strchr(sources, '\n');
if (!end) {
warn("bad ending versions file for %s\n", modname);

2
scripts/modules-check.sh
View File

@ -9,7 +9,7 @@ check_same_name_modules()
for m in $(sed 's:.*/::' modules.order | sort | uniq -d)
do
echo "warning: same module names found:" >&2
sed -n "/\/$m/s:^kernel/: :p" modules.order >&2
sed -n "/\/$m/s:^: :p" modules.order >&2
done
}

5
scripts/package/builddeb
View File

@ -132,6 +132,11 @@ fi
if [ "$ARCH" != "um" ]; then
$MAKE -f $srctree/Makefile headers
$MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH="$libc_headers_dir/usr"
# move asm headers to /usr/include/<libc-machine>/asm to match the structure
# used by Debian-based distros (to support multi-arch)
host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
mkdir $libc_headers_dir/usr/include/$host_arch
mv $libc_headers_dir/usr/include/asm $libc_headers_dir/usr/include/$host_arch/
fi
# Install the maintainer scripts

1
scripts/package/mkdebian
View File

@ -197,6 +197,7 @@ Architecture: $debarch
Description: Linux support headers for userspace development
This package provides userspaces headers from the Linux kernel. These headers
are used by the installed headers for GNU glibc and other system libraries.
Multi-Arch: same
Package: $dbg_packagename
Section: debug

2
scripts/package/mkspec
View File

@ -29,7 +29,7 @@ fi
PROVIDES="$PROVIDES kernel-$KERNELRELEASE"
__KERNELRELEASE=$(echo $KERNELRELEASE | sed -e "s/-/_/g")
EXCLUDES="$RCS_TAR_IGNORE --exclude=.tmp_versions --exclude=*vmlinux* \
EXCLUDES="$RCS_TAR_IGNORE --exclude=*vmlinux* --exclude=*.mod \
--exclude=*.o --exclude=*.ko --exclude=*.cmd --exclude=Documentation \
--exclude=.config.old --exclude=.missing-syscalls.d --exclude=*.s"

4
tools/power/cpupower/debug/kernel/Makefile
View File

@ -12,8 +12,8 @@ default:
$(MAKE) -C $(KDIR) M=$(CURDIR)
clean:
- rm -rf *.o *.ko .tmp-versions .*.cmd .*.mod.* *.mod.c
- rm -rf .tmp_versions* Module.symvers modules.order
- rm -rf *.o *.ko .*.cmd .*.mod.* *.mod.c
- rm -rf Module.symvers modules.order
install: default
install -d $(KMISC)

8
usr/include/Makefile
View File

@ -30,8 +30,6 @@ header-test-$(CONFIG_CPU_BIG_ENDIAN) += linux/byteorder/big_endian.h
header-test-$(CONFIG_CPU_LITTLE_ENDIAN) += linux/byteorder/little_endian.h
header-test- += linux/coda.h
header-test- += linux/coda_psdev.h
header-test- += linux/dvb/audio.h
header-test- += linux/dvb/osd.h
header-test- += linux/elfcore.h
header-test- += linux/errqueue.h
header-test- += linux/fsmap.h
@ -44,7 +42,6 @@ header-test- += linux/netfilter_bridge/ebtables.h
header-test- += linux/netfilter_ipv4/ipt_LOG.h
header-test- += linux/netfilter_ipv6/ip6t_LOG.h
header-test- += linux/nfc.h
header-test- += linux/nilfs2_ondisk.h
header-test- += linux/omap3isp.h
header-test- += linux/omapfb.h
header-test- += linux/patchkey.h
@ -59,9 +56,6 @@ header-test- += linux/v4l2-mediabus.h
header-test- += linux/v4l2-subdev.h
header-test- += linux/videodev2.h
header-test- += linux/vm_sockets.h
header-test- += misc/ocxl.h
header-test- += mtd/mtd-abi.h
header-test- += mtd/mtd-user.h
header-test- += scsi/scsi_bsg_fc.h
header-test- += scsi/scsi_netlink.h
header-test- += scsi/scsi_netlink_fc.h
@ -108,7 +102,6 @@ header-test- += linux/bpf_perf_event.h
endif
ifeq ($(SRCARCH),s390)
header-test- += asm/runtime_instr.h
header-test- += asm/zcrypt.h
endif
@ -116,7 +109,6 @@ ifeq ($(SRCARCH),sparc)
header-test- += asm/stat.h
header-test- += asm/uctx.h
header-test- += asm/fbio.h
header-test- += asm/openpromio.h
endif
# asm-generic/*.h is used by asm/*.h, and should not be included directly