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/csky/include/asm/Kbuild

f840cab6 - csky: convert to generic syscall table

Wed, 03 Jul 2024 15:09:22 +0000

csky: convert to generic syscall tableThe uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now begenerated from scripts/syscall.tbl, which makes this consistent withthe other architectures that have their own syscall.tbl.csky has two architecture specific system calls, which I add tothe generic table. The time32, stat64 and rlimit entries in thesyscall_abis_32 line are for system calls that were part of the genericABI when arch/csky got added but are no longer enabled by default fornew architectures.Both the user visible side of asm/unistd.h and the internal syscalltable in the kernel should have the same effective contents after this.Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/csky/include/asm/Kbuild

ed8023ae - csky: drop asm/gpio.h wrapper

Wed, 05 Jun 2024 12:41:26 +0000

csky: drop asm/gpio.h wrapperThe asm/gpio.h header is gone now that all architectures just usegpiolib, and so the redirect is no longer valid.Acked-by: Guo Ren Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/csky/include/asm/Kbuild

45e15c1a - csky: Add qspinlock support

Sun, 24 Jul 2022 01:32:34 +0000

csky: Add qspinlock supportEnable qspinlock by the requirements mentioned in a8ad07e5240c9("asm-generic: qspinlock: Indicate the use of mixed-size atomics").C-SKY only has "ldex/stex" for all atomic operations. So csky give astrong forward guarantee for "ldex/stex." That means when ldex grabbedthe cache line into $L1, it would block other cores from snooping theaddress with several cycles. The atomic_fetch_add & xchg16 has the sameforward guarantee level in C-SKY.Qspinlock has better code size and performance in a fast path.Signed-off-by: Guo Ren Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/include/asm/Kbuild

9282d099 - csky: Move to generic ticket-spinlock

Fri, 18 Mar 2022 08:34:21 +0000

csky: Move to generic ticket-spinlockThere is no benefit from custom implementation for ticket-spinlock,so move to generic ticket-spinlock for easy maintenance.Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann Signed-off-by: Palmer Dabbelt List of files: /linux-6.15/arch/csky/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/csky/include/asm/Kbuild

e58a41c2 - csky: uaccess.h: Coding convention with asm generic

Wed, 21 Apr 2021 08:03:28 +0000

csky: uaccess.h: Coding convention with asm genericUsing asm-generic/uaccess.h to prevent duplicated code: - Add user_addr_max which mentioned in generic uaccess.h - Remove custom definitions of KERNEL/USER_DS, get/set_fs, uaccess_kerenl - Using generic extable.h instead of custom definitions in uaccess.hChange v2: - Fixup tinyconfig compile error, "__put_user_bad" - Add __get_user_asm_64Signed-off-by: Guo Ren Link: https://lore.kernel.org/linux-csky/CAK8P3a1DvsXSEDoovLk11hzNHyJi7vqNoToU+n5aFi2viZO_Uw@mail.gmail.com/T/#mbcd58a0e3450e5598974116b607589afa16a3ab7Cc: Arnd Bergmann List of files: /linux-6.15/arch/csky/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/csky/include/asm/Kbuild

6e9ae6f9 - csky: Enable seccomp architecture tracking

Wed, 11 Nov 2020 13:33:47 +0000

csky: 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 csky.Signed-off-by: YiFei Zhu Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/f9219026d4803b22f3e57e3768b4e42e004ef236.1605101222.git.yifeifz2@illinois.edu List of files: /linux-6.15/arch/csky/include/asm/Kbuild

e95a4f8c - csky: Add SECCOMP_FILTER supported

Tue, 26 May 2020 08:11:52 +0000

csky: Add SECCOMP_FILTER supportedsecure_computing() is called first in syscall_trace_enter() so thata system call will be aborted quickly without doing succeeding syscalltracing if seccomp rules want to deny that system call.TODO: - Update https://github.com/seccomp/libseccomp csky supportSigned-off-by: Guo Ren Cc: Arnd Bergmann List of files: /linux-6.15/arch/csky/include/asm/Kbuild

33e53ae1 - csky: Add kprobes supported

Wed, 01 Apr 2020 01:17:02 +0000

csky: Add kprobes supportedThis patch enable kprobes, kretprobes, ftrace interface. It utilizedsoftware breakpoint and single step debug exceptions, instructionssimulation on csky.We use USR_BKPT replace origin instruction, and the kprobe handlerprepares an excutable memory slot for out-of-line execution with acopy of the original instruction being probed. Most of instructionscould be executed by single-step, but some instructions need originpc value to execute and we need software simulate these instructions.Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Steven Rostedt (VMware) List of files: /linux-6.15/arch/csky/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/csky/include/asm/Kbuild

5b49c82d - csky: Add PCI support

Mon, 27 Jan 2020 02:56:21 +0000

csky: Add PCI supportAdd the pci related code for csky arch to support basic pci virtualfunction, such as qemu virt-pci-9pfs.Signed-off-by: MaJun Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/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/csky/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/csky/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/csky/include/asm/Kbuild

1b2707fb - csky: remove redundant generic-y

Fri, 22 Mar 2019 11:19:14 +0000

csky: remove redundant generic-ySince commit 7cbbbb8bc297 ("kbuild: warn redundant generic-y"),redundant generic-y is reported. I missed to delete this one.scripts/Makefile.asm-generic:25: redundant generic-y found in arch/csky/include/asm/Kbuild: ftrace.hIn this case, csky-specific implementation exists inarch/csky/include/asm/ftrace.hSigned-off-by: Masahiro Yamada Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/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/csky/include/asm/Kbuild

c32e64e8 - csky: Build infrastructure

Wed, 05 Sep 2018 06:25:06 +0000

csky: Build infrastructureThis patch adds Makefile, Kconfig for build infrastructure.Signed-off-by: Guo Ren Acked-by: Arnd Bergmann List of files: /linux-6.15/arch/csky/include/asm/Kbuild