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/alpha/include/asm/Kbuild

e930d97f - alpha: remove

Sat, 19 Aug 2023 23:33:53 +0000

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

19fa21d7 - alpha: Remove redundant local asm header redirections

Sun, 13 Feb 2022 20:01:21 +0000

alpha: Remove redundant local asm header redirectionsRemove a number of asm headers locally redirected to the respectivegeneric or generated versions.For asm-offsets.h all that is needed is a Kbuild entry for the genericversion, and for div64.h, irq_regs.h and kdebug.h nothing is needed asin their absence they will be redirected automatically according toinclude/asm-generic/Kbuild.Signed-off-by: Maciej W. Rozycki Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/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/alpha/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/alpha/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/alpha/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/alpha/include/asm/Kbuild

a8faab54 - alpha: generate uapi header and syscall table header files

Tue, 13 Nov 2018 09:31:53 +0000

alpha: 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 byalpha/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/systbls.S file.Signed-off-by: Firoz Khan Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/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/alpha/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/alpha/include/asm/Kbuild

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

1c0234aa - alpha: use generic fb.h

Wed, 17 May 2017 08:29:34 +0000

alpha: use generic fb.hThe arch uses a verbatim copy of the asm-generic version and does notadd any own implemntations to the header, so use asm-generic/fb.hinstead of duplicating code.Signed-off-by: Tobias Klauser Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

7d134b2c - kprobes: move kprobe declarations to asm-generic/kprobes.h

Mon, 27 Feb 2017 22:26:56 +0000

kprobes: move kprobe declarations to asm-generic/kprobes.hOften all is needed is these small helpers, instead of compiler.h or afull kprobes.h. This is important for asm helpers, in fact even someasm/kprobes.h make use of these helpers... instead just keep a genericasm file with helpers useful for asm code with the least amount ofclutter as possible.Likewise we need now to also address what to do about this file for bothwhen architectures have CONFIG_HAVE_KPROBES, and when they do not. Thenfor when architectures have CONFIG_HAVE_KPROBES but have disabledCONFIG_KPROBES.Right now most asm/kprobes.h do not have guards against CONFIG_KPROBES,this means most architecture code cannot include asm/kprobes.h safely.Correct this and add guards for architectures missing them.Additionally provide architectures that not have kprobes support withthe default asm-generic solution. This lets us force asm/kprobes.h onthe header include/linux/kprobes.h always, but most importantly we cannow safely include just asm/kprobes.h on architecture code withoutbringing the full kitchen sink of header files.Two architectures already provided a guard against CONFIG_KPROBES on itskprobes.h: sh, arch. The rest of the architectures needed gaurds added.We avoid including any not-needed headers on asm/kprobes.h unlesskprobes have been enabled.In a subsequent atomic change we can try now to remove compiler.h frominclude/linux/kprobes.h.During this sweep I've also identified a few architectures defining acommon macro needed for both kprobes and ftrace, that of the definitionof the breakput instruction up. Some refer to this asBREAKPOINT_INSTRUCTION. This must be kept outside of the #ifdefCONFIG_KPROBES guard.[mcgrof@kernel.org: fix arm64 build] Link: http://lkml.kernel.org/r/CAB=NE6X1WMByuARS4mZ1g9+W=LuVBnMDnh_5zyN0CLADaVh=Jw@mail.gmail.com[sfr@canb.auug.org.au: fixup for kprobes declarations moving] Link: http://lkml.kernel.org/r/20170214165933.13ebd4f4@canb.auug.org.auLink: http://lkml.kernel.org/r/20170203233139.32682-1-mcgrof@kernel.orgSigned-off-by: Luis R. Rodriguez Signed-off-by: Stephen Rothwell Acked-by: Masami Hiramatsu Cc: Arnd Bergmann Cc: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Anil S Keshavamurthy Cc: David S. Miller Cc: Ingo Molnar Cc: Thomas Gleixner Cc: H. Peter Anvin Cc: Andy Lutomirski Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

35ca6953 - alpha: use generic current.h

Fri, 24 Feb 2017 23:00:14 +0000

alpha: use generic current.hGiven that the arch does not add its own implementations, simply use theasm-generic/current.h (generic-y) header instead of duplicating code.Link: http://lkml.kernel.org/r/1485992878-4780-2-git-send-email-dave@stgolabs.netSigned-off-by: Davidlohr Bueso Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/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/alpha/include/asm/Kbuild

00fc0e0d - alpha: move exports to actual definitions

Mon, 11 Jan 2016 14:51:29 +0000

alpha: move exports to actual definitionsSigned-off-by: Al Viro List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

f2abeef9 - mm: clean up per architecture MM hook header files

Fri, 17 Jul 2015 23:23:58 +0000

mm: clean up per architecture MM hook header filesCommit 2ae416b142b6 ("mm: new mm hook framework") introduced an emptyheader file (mm-arch-hooks.h) for every architecture, even those whichdoesn't need to define mm hooks.As suggested by Geert Uytterhoeven, this could be cleaned through the useof a generic header file included via each per architectureasm/include/Kbuild file.The PowerPC architecture is not impacted here since this architecture hasto defined the arch_remap MM hook.Signed-off-by: Laurent Dufour Suggested-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Acked-by: Vineet Gupta Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

c546d5db - remove scatterlist.h generation from arch Kbuild files

Tue, 19 May 2015 06:36:29 +0000

remove scatterlist.h generation from arch Kbuild filesSigned-off-by: Christoph Hellwig Reported-by: Geert Uytterhoeven Signed-off-by: Jens Axboe List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

0cb6c969 - net, lib: kill arch_fast_hash library bits

Wed, 10 Dec 2014 15:33:12 +0000

net, lib: kill arch_fast_hash library bitsAs there are now no remaining users of arch_fast_hash(), lets killit entirely.This basically reverts commit 71ae8aac3e19 ("lib: introduce archoptimized hash library") and follow-up work, that is f.e., commit237217546d44 ("lib: hash: follow-up fixups for arch hash"),commit e3fec2f74f7f ("lib: Add missing arch generic-y entries forasm-generic/hash.h") and last but not least commit 6a02652df511("perf tools: Fix include for non x86 architectures").Cc: Francesco Fusco Cc: Thomas Graf Cc: Arnaldo Carvalho de Melo Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller List of files: /linux-6.15/arch/alpha/include/asm/Kbuild

036c6508 - alpha: use Kbuild logic to include

Thu, 09 Oct 2014 22:30:10 +0000

alpha: use Kbuild logic to include Signed-off-by: Geert Uytterhoeven Acked-by: Richard Henderson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/include/asm/Kbuild