Changes in Kbuild

0c3beacf - asm-generic: introduce text-patching.h

Wed, 23 Oct 2024 16:27:06 +0000

asm-generic: introduce text-patching.hSeveral architectures support text patching, but they name the headerfiles that declare patching functions differently.Make all such headers consistently named text-patching.h and add an emptyheader in asm-generic for architectures that do not support text patching.Link: https://lkml.kernel.org/r/20241023162711.2579610-4-rppt@kernel.orgSigned-off-by: Mike Rapoport (Microsoft) Reviewed-by: Christoph Hellwig Acked-by: Geert Uytterhoeven # m68kAcked-by: Arnd Bergmann Reviewed-by: Luis Chamberlain Tested-by: kdevops Cc: Andreas Larsson Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Borislav Petkov (AMD) Cc: Brian Cain Cc: Catalin Marinas Cc: Christophe Leroy Cc: Dave Hansen Cc: Dinh Nguyen Cc: Guo Ren Cc: Helge Deller Cc: Huacai Chen Cc: Ingo Molnar Cc: Johannes Berg Cc: John Paul Adrian Glaubitz Cc: Kent Overstreet Cc: Liam R. Howlett Cc: Mark Rutland Cc: Masami Hiramatsu (Google) Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Oleg Nesterov Cc: Palmer Dabbelt Cc: Peter Zijlstra Cc: Richard Weinberger Cc: Russell King Cc: Song Liu Cc: Stafford Horne Cc: Steven Rostedt (Google) Cc: Suren Baghdasaryan Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Uladzislau Rezki (Sony) Cc: Vineet Gupta Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

66bcd060 - parport_pc: Also enable driver for PCI systems

Mon, 14 Feb 2022 20:16:50 +0000

parport_pc: Also enable driver for PCI systemsNowadays PC-style parallel ports come in the form of PCI and PCIe optioncards and there are some combined parallel/serial option cards as wellthat we handle in the parport subsystem. There is nothing in particularthat would prevent them from being used in any system equipped with PCIor PCIe connectivity, except that we do not permit the PARPORT_PC configoption to be selected for platforms for which ARCH_MIGHT_HAVE_PC_PARPORThas not been set for.The only PCI platforms that actually can't make use of PC-style parallelport hardware are those newer PCIe systems that have no support for I/Ocycles in the host bridge, required by such parallel ports. Notably,this includes the s390 arch, which has port I/O accessors that causecompilation warnings (promoted to errors with `-Werror'), and there areother cases such as the POWER9 PHB4 device, though this one has variableport I/O accessors that depend on the particular system. Also it is notclear whether the serial port side of devices enabled by PARPORT_SERIALuses port I/O or MMIO. Finally Super I/O solutions are always eitherISA or platform devices.Make the PARPORT_PC option selectable also for PCI systems then, exceptfor the s390 arch, however limit the availability of PARPORT_PC_SUPERIOto platforms that enable ARCH_MIGHT_HAVE_PC_PARPORT. Update platformsaccordingly for the required header.Acked-by: Sudip Mukherjee Signed-off-by: Maciej W. Rozycki Link: https://lore.kernel.org/r/alpine.DEB.2.21.2202141955550.34636@angie.orcam.me.ukSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

87dbc209 - local64.h: make mandatory

Tue, 29 Dec 2020 23:14:49 +0000

local64.h: make mandatoryMake mandatory in include/asm-generic/Kbuild andremove all arch/*/include/asm/local64.h arch-specific files since theyonly #include .This fixes build errors on arch/c6x/ and arch/nios2/ forblock/blk-iocost.c.Build-tested on 21 of 25 arch-es. (tools problems on the others)Yes, we could even rename to and change all #includes to use instead.Link: https://lkml.kernel.org/r/20201227024446.17018-1-rdunlap@infradead.orgSigned-off-by: Randy Dunlap Suggested-by: Christoph Hellwig Reviewed-by: Masahiro Yamada Cc: Jens Axboe Cc: Ley Foon Tan Cc: Mark Salter Cc: Aurelien Jacquiot Cc: Peter Zijlstra Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

445247b0 - xtensa: Enable seccomp architecture tracking

Wed, 11 Nov 2020 13:33:53 +0000

xtensa: Enable seccomp architecture trackingTo enable seccomp constant action bitmaps, we need to have a staticmapping to the audit architecture and system call table size. Add thesefor xtensa.Signed-off-by: YiFei Zhu Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/79669648ba167d668ea6ffb4884250abcd5ed254.1605101222.git.yifeifz2@illinois.edu List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

da94a40f - xtensa: add seccomp support

Thu, 14 Nov 2019 04:47:17 +0000

xtensa: add seccomp supportAdd SECCOMP to xtensa Kconfig, select HAVE_ARCH_SECCOMP_FILTER, addTIF_SECCOMP and call secure_computing from do_syscall_trace_enter.Signed-off-by: Max Filippov List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

630f289b - asm-generic: make more kernel-space headers mandatory

Thu, 02 Apr 2020 04:03:12 +0000

asm-generic: make more kernel-space headers mandatoryChange a header to mandatory-y if both of the following are met:[1] At least one architecture (except um) specifies it as generic-y in arch/*/include/asm/Kbuild[2] Every architecture (except um) either has its own implementation (arch/*/include/asm/*.h) or specifies it as generic-y in arch/*/include/asm/KbuildThis commit was generated by the following shell script.----------------------------------->8-----------------------------------arches=$(cd arch; ls -1 | sed -e '/Kconfig/d' -e '/um/d')tmpfile=$(mktemp)grep "^mandatory-y +=" include/asm-generic/Kbuild > $tmpfilefind arch -path 'arch/*/include/asm/Kbuild' | xargs sed -n 's/^generic-y += $.*$/\1/p' | sort -u |while read headerdo mandatory=yes for arch in $arches do if ! grep -q "generic-y += $header" arch/$arch/include/asm/Kbuild && ! [ -f arch/$arch/include/asm/$header ]; then mandatory=no break fi done if [ "$mandatory" = yes ]; then echo "mandatory-y += $header" >> $tmpfile for arch in $arches do sed -i "/generic-y += $header/d" arch/$arch/include/asm/Kbuild done fidonesed -i '/^mandatory-y +=/d' include/asm-generic/KbuildLANG=C sort $tmpfile >> include/asm-generic/Kbuild----------------------------------->8-----------------------------------One obvious benefit is the diff stat: 25 files changed, 52 insertions(+), 557 deletions(-)It is tedious to list generic-y for each arch that needs it.So, mandatory-y works like a fallback default (by just wrappingasm-generic one) when arch does not have a specific headerimplementation.See the following commits:def3f7cefe4e81c296090e1722a76551142c227ca1b39bae16a62ce4aae02d958224f19316d98b24It is tedious to convert headers one by one, so I processed by a shellscript.Signed-off-by: Masahiro Yamada Signed-off-by: Andrew Morton Cc: Michal Simek Cc: Christoph Hellwig Cc: Arnd Bergmann Link: http://lkml.kernel.org/r/20200210175452.5030-1-masahiroy@kernel.orgSigned-off-by: Linus Torvalds List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

def3f7ce - asm-generic: Make dma-contiguous.h a mandatory include/asm header

Fri, 17 Jan 2020 07:48:17 +0000

asm-generic: Make dma-contiguous.h a mandatory include/asm headerdma-continuguous.h is generic for all architectures except arm32 which hasits own version.Similar change was done for msi.h by commit a1b39bae16a6("asm-generic: Make msi.h a mandatory include/asm header")Suggested-by: Christoph Hellwig Link: https://lore.kernel.org/linux-arm-kernel/20200117080446.GA8980@lst.de/T/#m92bb56b04161057635d4142e1b3b9b6b0a70122eSigned-off-by: Michal Simek Reviewed-by: Christoph Hellwig Acked-by: Thomas Gleixner Acked-by: Arnd Bergmann Acked-by: Paul Walmsley # for arch/riscv List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

c3e0a444 - xtensa: clean up empty include files

Fri, 27 Sep 2019 21:12:57 +0000

xtensa: clean up empty include filesRemove empty hw_irq.h and user.h from arch/xtensa/include/asm and usegeneric versions instead.Signed-off-by: Max Filippov List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

96ac6d43 - treewide: Add SPDX license identifier - Kbuild

Thu, 30 May 2019 12:03:44 +0000

treewide: Add SPDX license identifier - KbuildAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0Reported-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman Reviewed-by: Kate Stewart Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

33ff99fb - arch: remove dangling asm-generic wrappers

Thu, 09 May 2019 07:59:34 +0000

arch: remove dangling asm-generic wrappersThese generic-y defines do not have the corresponding generic headerin include/asm-generic/, so they are definitely invalid.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

fdcd06a8 - arch: Use asm-generic header for asm/mmiowb.h

Fri, 22 Feb 2019 12:49:41 +0000

arch: Use asm-generic header for asm/mmiowb.hHook up asm-generic/mmiowb.h to Kbuild for all architectures so that wecan subsequently include asm/mmiowb.h from core code.Cc: Masahiro Yamada Cc: Arnd Bergmann Acked-by: Linus Torvalds Signed-off-by: Will Deacon List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

46ad0840 - locking/rwsem: Remove arch specific rwsem files

Fri, 22 Mar 2019 14:30:06 +0000

locking/rwsem: Remove arch specific rwsem filesAs the generic rwsem-xadd code is using the appropriate acquire andrelease versions of the atomic operations, the arch specific rwsem.hfiles will not be that much faster than the generic code as long as theatomic functions are properly implemented. So we can remove those archspecific rwsem.h and stop building asm/rwsem.h to reduce maintenanceeffort.Currently, only x86, alpha and ia64 have implemented architecturespecific fast paths. I don't have access to alpha and ia64 systems fortesting, but they are legacy systems that are not likely to be updatedto the latest kernel anyway.By using a rwsem microbenchmark, the total locking rates on a 4-socket56-core 112-thread x86-64 system before and after the patch were asfollows (mixed means equal # of read and write locks): Before Patch After Patch # of Threads wlock rlock mixed wlock rlock mixed ------------ ----- ----- ----- ----- ----- ----- 1 29,201 30,143 29,458 28,615 30,172 29,201 2 6,807 13,299 1,171 7,725 15,025 1,804 4 6,504 12,755 1,520 7,127 14,286 1,345 8 6,762 13,412 764 6,826 13,652 726 16 6,693 15,408 662 6,599 15,938 626 32 6,145 15,286 496 5,549 15,487 511 64 5,812 15,495 60 5,858 15,572 60There were some run-to-run variations for the multi-thread tests. Forx86-64, using the generic C code fast path seems to be a little bitfaster than the assembly version with low lock contention. Looking atthe assembly version of the fast paths, there are assembly to/from Ccode wrappers that save and restore all the callee-clobbered registers(7 registers on x86-64). The assembly generated from the generic Ccode doesn't need to do that. That may explain the slight performancegain here.The generic asm rwsem.h can also be merged into kernel/locking/rwsem.hwith no code change as no other code other than those underkernel/locking needs to access the internal rwsem macros and functions.Signed-off-by: Waiman Long Signed-off-by: Peter Zijlstra (Intel) Acked-by: Linus Torvalds Cc: Andrew Morton Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Davidlohr Bueso Cc: H. Peter Anvin Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Tim Chen Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.orgCc: linux-c6x-dev@linux-c6x.orgCc: linux-m68k@lists.linux-m68k.orgCc: linux-riscv@lists.infradead.orgCc: linux-um@lists.infradead.orgCc: linux-xtensa@linux-xtensa.orgCc: linuxppc-dev@lists.ozlabs.orgCc: nios2-dev@lists.rocketboards.orgCc: openrisc@lists.librecores.orgCc: uclinux-h8-devel@lists.sourceforge.jpLink: https://lkml.kernel.org/r/20190322143008.21313-2-longman@redhat.comSigned-off-by: Ingo Molnar List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

3d9683cf - KVM: export and iif KVM is supported

Mon, 18 Mar 2019 09:08:12 +0000

KVM: export and iif KVM is supportedI do not see any consistency about headers_install of and .According to my analysis of Linux 5.1-rc1, there are 3 groups: [1] Both and are exported alpha, arm, hexagon, mips, powerpc, s390, sparc, x86 [2] is exported, but is not arc, arm64, c6x, h8300, ia64, m68k, microblaze, nios2, openrisc, parisc, sh, unicore32, xtensa [3] Neither nor is exported csky, nds32, riscvThis does not match to the actual KVM support. At least, [2] ishalf-baked.Nor do arch maintainers look like they care about this. For example,commit 0add53713b1c ("microblaze: Add missing kvm_para.h to Kbuild")exported to user-space in order to fix an in-kernelbuild error.We have two ways to make this consistent: [A] export both and for all architectures, irrespective of the KVM support [B] Match the header export of and to the KVM supportMy first attempt was [A] because the code looks cleaner, but Paolosuggested [B].So, this commit goes with [B].For most architectures, was moved to the kernel-space.I changed include/uapi/linux/Kbuild so that it checks generatedasm/kvm_para.h as well as check-in ones.After this commit, there will be two groups: [1] Both and are exported arm, arm64, mips, powerpc, s390, x86 [2] Neither nor is exported alpha, arc, c6x, csky, h8300, hexagon, ia64, m68k, microblaze, nds32, nios2, openrisc, parisc, riscv, sh, sparc, unicore32, xtensaSigned-off-by: Masahiro Yamada Acked-by: Cornelia Huck Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

7cbbbb8b - kbuild: warn redundant generic-y

Sun, 17 Mar 2019 02:01:08 +0000

kbuild: warn redundant generic-yThe generic-y is redundant under the following condition: - arch has its own implementation - the same header is added to generated-y - the same header is added to mandatory-yIf a redundant generic-y is found, the warning like follows is displayed: scripts/Makefile.asm-generic:20: redundant generic-y found in arch/arm/include/asm/Kbuild: timex.hI fixed up arch Kbuild files found by this.Suggested-by: Sam Ravnborg Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

579afe86 - xtensa: use generic spinlock/rwlock implementation

Tue, 01 Jan 2019 22:08:32 +0000

xtensa: use generic spinlock/rwlock implementationDrop custom spinlock/rwlock code and use ones from asm-generic. This waythere is less code duplication (atomic primitives are reused).Signed-off-by: Max Filippov List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

2edfd8e0 - arch: Use asm-generic/socket.h when possible

Sat, 02 Feb 2019 15:34:45 +0000

arch: Use asm-generic/socket.h when possibleMany architectures maintain an arch specific copy of thefile even though there are no differences with the asm-genericone. Allow these architectures to use the generic one instead.Signed-off-by: Deepa Dinamani Acked-by: Max Filippov Acked-by: Heiko Carstens Acked-by: Willem de Bruijn Cc: chris@zankel.netCc: fenghua.yu@intel.comCc: tglx@linutronix.deCc: schwidefsky@de.ibm.comCc: linux-ia64@vger.kernel.orgCc: linux-xtensa@linux-xtensa.orgCc: linux-s390@vger.kernel.orgSigned-off-by: David S. Miller List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

5eacadb5 - xtensa: generate uapi header and syscall table header files

Tue, 13 Nov 2018 10:19:30 +0000

xtensa: generate uapi header and syscall table header filesSystem call table generation script must be run to gener-ate unistd_32.h and syscall_table.h files. This patch willhave changes which will invokes the script.This patch will generate unistd_32.h and syscall_table.hfiles by the syscall table generation script invoked byxtensa/Makefile and the generated files against the removedfiles must be identical.The generated uapi header file will be included in uapi/-asm/unistd.h and generated system call table header filewill be included by kernel/syscall.c file.Signed-off-by: Firoz Khan Signed-off-by: Max Filippov List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

253cc22f - xtensa: use generic vga.h

Fri, 26 Oct 2018 22:03:02 +0000

xtensa: use generic vga.hWhat xtensa has in asm/vga.h is the same as what can be found inasm-generic/vga.h. So use the latter header.Link: http://lkml.kernel.org/r/20180907132219.12979-1-jslaby@suse.czSigned-off-by: Jiri Slaby Acked-by: Max Filippov Cc: Chris Zankel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

3f2bbf44 - xtensa: use generic dma_noncoherent_ops

Tue, 19 Jun 2018 07:03:16 +0000

xtensa: use generic dma_noncoherent_opsSwitch to the generic noncoherent direct mapping implementation.Signed-off-by: Christoph Hellwig Signed-off-by: Max Filippov List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild

2b5a9a37 - time: Add an asm-generic/compat.h file

Mon, 26 Mar 2018 14:59:15 +0000

time: Add an asm-generic/compat.h fileWe have a couple of files that try to include asm/compat.h onarchitectures where this is available. Those should generally use thehigher-level linux/compat.h file, but that in turn fails to includeasm/compat.h when CONFIG_COMPAT is disabled, unless we can providethat header on all architectures.This adds the asm/compat.h for all remaining architectures tosimplify the dependencies.Architectures that are getting removed in linux-4.17 are not changedhere, to avoid needless conflicts with the removal patches. Thosearchitectures are broken by this patch, but we have already shownthat they have no users.Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/xtensa/include/asm/Kbuild