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/sparc/include/asm/Kbuild

ee8aff7f - sparc: remove

Sat, 19 Aug 2023 23:33:49 +0000

sparc: remove All *.S files under arch/sparc/ have been converted to include instead of .Remove .Signed-off-by: Masahiro Yamada Acked-by: Sam Ravnborg List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

a13408c2 - char/agp: introduce asm-generic/agp.h

Sun, 12 Feb 2023 08:46:11 +0000

char/agp: introduce asm-generic/agp.hThere are several architectures that duplicate definitions ofmap_page_into_agp(), unmap_page_from_agp() and flush_agp_cache().Define those in asm-generic/agp.h and use it instead of duplicatedper-architecture headers.Signed-off-by: Mike Rapoport (IBM) Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

5ad4e94b - sparc: syscalls: switch to generic syscalltbl.sh

Mon, 01 Mar 2021 14:51:01 +0000

sparc: syscalls: switch to generic syscalltbl.shMany architectures duplicate similar shell scripts.This commit converts sparc to use scripts/syscalltbl.sh. This alsounifies syscall_table_64.h and syscall_table_c32.h.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

27dad89b - sparc: remove wrong comment from arch/sparc/include/asm/Kbuild

Thu, 28 Jan 2021 00:51:03 +0000

sparc: remove wrong comment from arch/sparc/include/asm/KbuildThese are NOT exported to userspace.The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/sparc/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/sparc/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/sparc/include/asm/Kbuild

a1b39bae - asm-generic: Make msi.h a mandatory include/asm header

Fri, 25 Oct 2019 06:10:37 +0000

asm-generic: Make msi.h a mandatory include/asm headermsi.h is generic for all architectures except x86, which has its ownversion. Enabling MSI by adding msi.h to every architecture's Kbuild isjust an additional step which doesn't need to be done.Make msi.h mandatory in the asm-generic/Kbuild so we don't have to do itfor each architecture.Suggested-by: Christoph Hellwig Link: https://lore.kernel.org/r/c991669e29a79b1a8e28c3b4b3a125801a693de8.1571983829.git.michal.simek@xilinx.comTested-by: Paul Walmsley # build only, rv32/rv64Signed-off-by: Michal Simek Signed-off-by: Bjorn Helgaas Reviewed-by: Masahiro Yamada Acked-by: Waiman Long Acked-by: Paul Walmsley # arch/riscv List of files: /linux-6.15/arch/sparc/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/sparc/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/sparc/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/sparc/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/sparc/include/asm/Kbuild

36800330 - sparc: generate uapi header and system call table files

Wed, 14 Nov 2018 05:26:31 +0000

sparc: generate uapi header and system call table filesSystem call table generation script must be run to gener-ate unistd_32/64.h and syscall_table_32/64/c32.h files.This patch will have changes which will invokes the script.This patch will generate unistd_32/64.h and syscall_table-_32/64/c32.h files by the syscall table generation scriptinvoked by parisc/Makefile and the generated files againstthe removed files 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/systbls_32/64.S file.Signed-off-by: Firoz Khan Signed-off-by: David S. Miller List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

12be1036 - sparc: use asm-generic version of msi.h

Tue, 24 Jul 2018 11:53:05 +0000

sparc: use asm-generic version of msi.hThis is necessary to be able to include whenCONFIG_GENERIC_MSI_IRQ_DOMAIN is enabled. Without this, a build withCONFIG_GENERIC_MSI_IRQ_DOMAIN fails with: In file included from drivers//ata/ahci.c:45:0:>> include/linux/msi.h:226:10: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? msi_alloc_info_t *arg); ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:230:9: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? msi_alloc_info_t *arg); ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:239:12: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? msi_alloc_info_t *arg); ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:240:22: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? void (*msi_finish)(msi_alloc_info_t *arg, int retval); ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:241:20: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? void (*set_desc)(msi_alloc_info_t *arg, ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:316:18: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? int nvec, msi_alloc_info_t *args); ^~~~~~~~~~~~~~~~ sg_alloc_fn include/linux/msi.h:318:29: error: unknown type name 'msi_alloc_info_t'; did you mean 'sg_alloc_fn'? int virq, int nvec, msi_alloc_info_t *args); ^~~~~~~~~~~~~~~~ sg_alloc_fnSigned-off-by: Thomas Petazzoni Signed-off-by: David S. Miller List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

e0af0c16 - arch: Remove clkdev.h asm-generic from Kbuild

Tue, 02 Jan 2018 23:50:06 +0000

arch: Remove clkdev.h asm-generic from KbuildNow that every architecture is using the generic clkdev.h fileand we no longer include asm/clkdev.h anywhere in the tree, wecan remove it.Cc: Russell King Acked-by: Arnd Bergmann Cc: Acked-by: Geert Uytterhoeven [m68k]Signed-off-by: Stephen Boyd List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

b6744e04 - sparc: move generic-y of exported headers to uapi/asm/Kbuild

Sun, 09 Jul 2017 18:32:54 +0000

sparc: move generic-y of exported headers to uapi/asm/KbuildSince commit fcc8487d477a ("uapi: export all headers under uapidirectories"), all (and only) headers under uapi directories areexported, but asm-generic wrappers are still exceptions.To complete de-coupling the uapi from kernel headers, move generic-yof exported headers to uapi/asm/Kbuild.With this change, "make headers_install" will just need to parseuapi/asm/Kbuild to build up exported headers.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

b672592f - sched/cputime: Remove generic asm headers

Tue, 31 Jan 2017 03:09:51 +0000

sched/cputime: Remove generic asm headerscputime_t is now only used by two architectures: * powerpc (when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y) * s390And since the core doesn't use it anymore, we don't need any arch supportfrom the others. So we can remove their stub implementations.A final cleanup would be to provide an efficient pure archimplementation of cputime_to_nsec() for s390 and powerpc and finallyremove include/linux/cputime.h .Signed-off-by: Frederic Weisbecker Cc: Benjamin Herrenschmidt Cc: Fenghua Yu Cc: Heiko Carstens Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Rik van Riel Cc: Stanislaw Gruszka Cc: Thomas Gleixner Cc: Tony Luck Cc: Wanpeng Li Link: http://lkml.kernel.org/r/1485832191-26889-36-git-send-email-fweisbec@gmail.comSigned-off-by: Ingo Molnar List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

890658b7 - locking/mutex: Kill arch specific code

Tue, 23 Aug 2016 11:36:04 +0000

locking/mutex: Kill arch specific codeIts all generic atomic_long_t stuff now.Tested-by: Jason Low Signed-off-by: Peter Zijlstra (Intel) Cc: Andrew Morton Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-arch@vger.kernel.orgCc: linux-kernel@vger.kernel.orgSigned-off-by: Ingo Molnar List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

d3867f04 - sparc: move exports to definitions

Sun, 17 Jan 2016 02:39:30 +0000

sparc: move exports to definitionsAcked-by: David S. Miller Signed-off-by: Al Viro List of files: /linux-6.15/arch/sparc/include/asm/Kbuild

938072e3 - locking/rwsem, sparc: Drop superfluous arch specific implementation

Thu, 07 Apr 2016 15:12:25 +0000

locking/rwsem, sparc: Drop superfluous arch specific implementationsparc basically reuses the generic implementation of rwsem so we canreuse the code rather than duplicate it.Signed-off-by: Michal Hocko Cc: Andrew Morton Cc: Chris Zankel Cc: David S. Miller Cc: Linus Torvalds Cc: Max Filippov Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Signed-off-by: Davidlohr Bueso Cc: Signed-off-by: Jason Low Cc: Thomas Gleixner Cc: Tony Luck Cc: linux-alpha@vger.kernel.orgCc: linux-arch@vger.kernel.orgCc: linux-ia64@vger.kernel.orgCc: linux-s390@vger.kernel.orgCc: linux-sh@vger.kernel.orgCc: linux-xtensa@linux-xtensa.orgCc: sparclinux@vger.kernel.orgLink: http://lkml.kernel.org/r/1460041951-22347-6-git-send-email-mhocko@kernel.orgSigned-off-by: Ingo Molnar List of files: /linux-6.15/arch/sparc/include/asm/Kbuild