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* treewide: drop CONFIG_EMBEDDEDRandy Dunlap2023-08-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is only one Kconfig user of CONFIG_EMBEDDED and it can be switched to EXPERT or "if !ARCH_MULTIPLATFORM" (suggested by Arnd). Link: https://lkml.kernel.org/r/20230816055010.31534-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> [RISC-V] Acked-by: Greg Ungerer <gerg@linux-m68k.org> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Russell King <linux@armlinux.org.uk> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Brian Cain <bcain@quicinc.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* mm/slab: rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATEDVlastimil Babka2023-05-261-1/+0
| | | | | | | | | | | | | | | | | | | | As discussed at LSF/MM [1] [2] and with no objections raised there, deprecate the SLAB allocator. Rename the user-visible option so that users with CONFIG_SLAB=y get a new prompt with explanation during make oldconfig, while make olddefconfig will just switch to SLUB. In all defconfigs with CONFIG_SLAB=y remove the line so those also switch to SLUB. Regressions due to the switch should be reported to linux-mm and slab maintainers. [1] https://lore.kernel.org/all/4b9fc9c6-b48c-198f-5f80-811a44737e5f@suse.cz/ [2] https://lwn.net/Articles/932201/ Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Acked-by: Helge Deller <deller@gmx.de> # parisc
* arc: update config filesLukas Bulwahn2022-10-171-1/+0
| | | | | | | | | | | | | | Clean up config files by: - removing configs that were deleted in the past - removing configs not in tree and without recently pending patches - adding new configs that are replacements for old configs in the file For some detailed information, see Link. Link: https://lore.kernel.org/kernel-janitors/20220929090645.1389-1-lukas.bulwahn@gmail.com/ Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Vineet Gupta <vgupta@kernel.org>
* kbuild: drop support for CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3Nick Desaulniers2022-07-271-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The difference in most compilers between `-O3` and `-O2` is mostly down to whether loops with statically determinable trip counts are fully unrolled vs unrolled to a multiple of SIMD width. This patch is effectively a revert of commit 15f5db60a137 ("kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC") without re-adding ARCH_CFLAGS Ever since commit cfdbc2e16e65 ("ARC: Build system: Makefiles, Kconfig, Linker script") ARC has been built with -O3, though the reason for doing so was not specified in inline comments or the commit message. This commit does not re-add -O3 to arch/arc/Makefile. Folks looking to experiment with `-O3` (or any compiler flag for that matter) may pass them along to the command line invocation of make: $ make KCFLAGS=-O3 Code that looks to re-add an explicit Kconfig option for `-O3` should provide: 1. A rigorous and reproducible performance profile of a reasonable userspace workload that demonstrates a hot loop in the kernel that would benefit from `-O3` over `-O2`. 2. Disassembly of said loop body before and after. 3. Provides stats on terms of increase in file size. Link: https://lore.kernel.org/linux-kbuild/CA+55aFz2sNBbZyg-_i8_Ldr2e8o9dfvdSfHHuRzVtP2VMAUWPg@mail.gmail.com/ Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* ARC: [plat-hsdk]: fix USB regressionEugeniy Paltsev2020-04-121-0/+1
| | | | | | | | | | | | | | | | | | As of today the CONFIG_USB isn't explicitly present in HSDK defconfig as it is implicitly forcibly enabled by UDL driver which selects CONFIG_USB in its kconfig. The commit 5d50bd440bc2 ("drm/udl: Make udl driver depend on CONFIG_USB") reverse the dependencies between UDL and USB so UDL now depends on CONFIG_USB and not selects it. This introduces regression for ARC HSDK board as HSDK defconfig wasn't adjusted and now it misses USB support due to lack of CONFIG_USB enabled. Fix that. Cc: <stable@vger.kernel.org> # 5.6.x Fixes: 5d50bd440bc2 ("drm/udl: Make udl driver depend on CONFIG_USB") Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: Enable on-boardi SPI ADC ICEugeniy Paltsev2019-10-221-0/+4
| | | | | | | | HSDK board has adc108s102 SPI ADC IC installed, enable it. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: Enable on-board SPI NOR flash ICEugeniy Paltsev2019-10-221-0/+2
| | | | | | | | HSDK board has sst26wf016b SPI NOR flash IC installed, enable it. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARCMasahiro Yamada2019-09-041-0/+1
| | | | | | | | | | | | | | | | | arch/arc/Makefile overrides -O2 with -O3. This is the only user of ARCH_CFLAGS. There is no user of ARCH_CPPFLAGS or ARCH_AFLAGS. My plan is to remove ARCH_{CPP,A,C}FLAGS after refactoring the ARC Makefile. Currently, ARC has no way to enable -Wmaybe-uninitialized because both -O3 and -Os disable it. Enabling it will be useful for compile-testing. This commit allows allmodconfig (, which defaults to -O2) to enable it. Add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y to all the defconfig files in arch/arc/configs/ in order to keep the current config settings. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: Enable AXI DW DMAC in defconfigEugeniy Paltsev2019-07-081-0/+2
| | | | | | | | | | For some reasons my previous patch "Enable AXI DW DMAC support" was applied only partially (only device tree part). So enable AXI DW DMAC in HSDK defconfig to be able to use it in verification flow. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: enable DW SPI controllerEugeniy Paltsev2019-07-081-0/+3
| | | | | | | | | HSDK SoC has DW SPI controller. Enable it in preparation of enabling on-board SPI peripherals. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: Add support of Vivante GPUEugeniy Paltsev2019-05-281-1/+1
| | | | | | | | HSDK board has built-in Vivante GPU IP which works perfectly fine with Etnaviv driver, so let's use it. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: enable creg-gpio controllerEugeniy Paltsev2019-05-281-0/+1
| | | | | | | | | | HSDK SOC has CREG GPIO controller which can be used to control SPI chip select lines. Enable it in preparation of enabling SPI peripherals. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* Merge tag 'arc-5.1-rc2' of ↵Linus Torvalds2019-03-201-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC updates from Vineet Gupta: - unaligned access support for HS cores - Removed extra memory barrier around spinlock code - HSDK platform updates: enable dmac, reset - some more boot logging updates - misc minor fixes * tag 'arc-5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: arch: arc: Kconfig: pedantic formatting ARCv2: spinlock: remove the extra smp_mb before lock, after unlock ARC: unaligned: relax the check for gcc supporting -mno-unaligned-access ARC: boot log: cut down on verbosity ARCv2: boot log: refurbish HS core/release identification arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM ARC: u-boot args: check that magic number is correct ARC: perf: bpok condition only exists for ARCompact ARCv2: Add explcit unaligned access support (and ability to disable too) ARCv2: lib: introduce memcpy optimized for unaligned access ARC: [plat-hsdk]: Enable AXI DW DMAC support ARC: [plat-hsdk]: Add reset controller handle to manage USB reset ARC: DTB: [scripted] fix node name and address spelling
| * arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAMCorentin Labbe2019-02-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | We have now a HSDK device in our kernelci lab, but kernel builded via the hsdk_defconfig lacks ramfs supports, so it cannot boot kernelci jobs yet. So this patch enable CONFIG_BLK_DEV_RAM in hsdk_defconfig. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | configs: get rid of obsolete CONFIG_ENABLE_WARN_DEPRECATEDAlexey Brodkin2019-03-071-1/+0
|/ | | | | | | | | | | | | | | | This Kconfig option was removed during v4.19 development in commit 771c035372a0 ("deprecate the '__deprecated' attribute warnings entirely and for good") so there's no point to keep it in defconfigs any longer. FWIW defconfigs were patched with: --------------------------->8---------------------- find . -name *_defconfig -exec sed -i '/CONFIG_ENABLE_WARN_DEPRECATED/d' {} \; --------------------------->8---------------------- Link: http://lkml.kernel.org/r/20190128152434.41969-1-abrodkin@synopsys.com Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* arc: [devboards] Add support of NFSv3 ACLAlexey Brodkin2018-11-211-0/+1
| | | | | | | | | | | | | | By default NFSv3 doesn't support ACL (Access Control Lists) which might be quite convenient to have so that mounted NFS behaves exactly as any other local file-system. In particular missing support of ACL makes umask useless. This among other thigs fixes Glibc's "nptl/tst-umask1". Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Cupertino Miranda <cmiranda@synopsys.com> Cc: stable@vger.kernel.org #4.14+ Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk] Enable DW APB GPIO supportEugeniy Paltsev2018-11-121-0/+3
| | | | | | | | | Enable GPIO support on HSDK. HSDK SoC includes Synopsys DesignWare DW_apb_gpio IP with 24 GPIOs mapped onto port A. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: configs: cleanupAlexey Brodkin2018-08-271-1/+0
| | | | | | | | | | | | | | - Remove CONFIG_DEFAULT_HOSTNAME from defconfigs There's no reason to set the same hostname to all ARC boards by default. It usually gets overwritten by init scripts anyways. - Remove disabled CONFIG_DEVKMEM from defconfigs It is disabled by default Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigsAlexey Brodkin2018-07-091-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | We used to have pre-set CONFIG_INITRAMFS_SOURCE with local path to intramfs in ARC defconfigs. This was quite convenient for in-house development but not that convenient for newcomers who obviusly don't have folders like "arc_initramfs" next to the Linux source tree. Which leads to quite surprising failure of defconfig building: ------------------------------->8----------------------------- ../scripts/gen_initramfs_list.sh: Cannot open '../../arc_initramfs_hs/' ../usr/Makefile:57: recipe for target 'usr/initramfs_data.cpio.gz' failed make[2]: *** [usr/initramfs_data.cpio.gz] Error 1 ------------------------------->8----------------------------- So now when more and more people start to deal with our defconfigs let's make their life easier with removal of CONFIG_INITRAMFS_SOURCE. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Kevin Hilman <khilman@baylibre.com> Cc: stable@vger.kernel.org Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* Merge tag 'driver-core-4.16-rc1' of ↵Linus Torvalds2018-02-011-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of "big" driver core patches for 4.16-rc1. The majority of the work here is in the firmware subsystem, with reworks to try to attempt to make the code easier to handle in the long run, but no functional change. There's also some tree-wide sysfs attribute fixups with lots of acks from the various subsystem maintainers, as well as a handful of other normal fixes and changes. And finally, some license cleanups for the driver core and sysfs code. All have been in linux-next for a while with no reported issues" * tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits) device property: Define type of PROPERTY_ENRTY_*() macros device property: Reuse property_entry_free_data() device property: Move property_entry_free_data() upper firmware: Fix up docs referring to FIRMWARE_IN_KERNEL firmware: Drop FIRMWARE_IN_KERNEL Kconfig option USB: serial: keyspan: Drop firmware Kconfig options sysfs: remove DEBUG defines sysfs: use SPDX identifiers drivers: base: add coredump driver ops sysfs: add attribute specification for /sysfs/devices/.../coredump test_firmware: fix missing unlock on error in config_num_requests_store() test_firmware: make local symbol test_fw_config static sysfs: turn WARN() into pr_warn() firmware: Fix a typo in fallback-mechanisms.rst treewide: Use DEVICE_ATTR_WO treewide: Use DEVICE_ATTR_RO treewide: Use DEVICE_ATTR_RW sysfs.h: Use octal permissions component: add debugfs support bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate ...
| * firmware: Drop FIRMWARE_IN_KERNEL Kconfig optionBenjamin Gilbert2018-01-251-1/+0
| | | | | | | | | | | | | | | | | | | | | | It doesn't actually do anything. Merge its help text into EXTRA_FIRMWARE. Fixes: 5620a0d1aacd ("firmware: delete in-kernel firmware") Fixes: 0946b2fb38fd ("firmware: cleanup FIRMWARE_IN_KERNEL message") Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | ARC: [plat-hsdk] Switch DisplayLink driver from fbdev to DRMAlexey Brodkin2017-12-201-2/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | | Currently there're 2 different implementations of the driver for DisplayLink USB2.0-to-HDMI/DVI adapters: older FBDEV and modern true DRM. We initially decided to use FBDEV version just because with it /dev/fbX is usable from user-space while in DRM version with DRM_FBDEV_EMULATION user-space cannot draw anything on a real screen, for more info read [1]. But today /dev/fbX is not that important as more and more software projects switch to use of DRI (/dev/dri/cardX). But what's even more important DRM driver allows building of complicated graphics processing chains. The most important for us is rendering of 3D on a dedicated GPU while outputting video through a simpler bitstreamer like DisplayLink. So let's use much more future-proof driver from now on. [1] https://lists.freedesktop.org/archives/dri-devel/2017-December/159519.html Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk] select CONFIG_RESET_HSDK from KconfigVineet Gupta2017-10-091-1/+0
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk]: Add reset controller node to manage ethernet resetEugeniy Paltsev2017-10-061-0/+1
| | | | | | | | DW ethernet controller on HSDK hangs sometimes after SW reset, so add reset node to make possible to reset DW ethernet controller HW. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [*defconfig] Reenable soft lock-up detectorAlexey Brodkin2017-10-031-1/+1
| | | | | | | | | | | Commit 92e5aae45778 "kernel/watchdog: split up config options" introduced SOFTLOCKUP_DETECTOR which selects LOCKUP_DETECTOR instead of the latter to be selected itself. We need to adjust our defconfigs accordingly. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-hsdk] initial port for HSDK boardAlexey Brodkin2017-09-011-0/+80
This initial port adds support of ARC HS Development Kit board with some basic features such serial port, USB, SD/MMC and Ethernet. Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and heavily use IO Coherency for speeding-up DMA-aware peripherals. Note as opposed to other ARC boards we link Linux kernel to 0x9000_0000 intentionally because cores 1 and 3 configured with DCCM situated at our more usual link base 0x8000_0000. We still can use memory region starting at 0x8000_0000 as we reallocate DCCM in our platform code. Note that PAE remapping for DMA clients does not work due to an RTL bug, so CREG_PAE register must be programmed to all zeroes, otherwise it will cause problems with DMA to/from peripherals even if PAE40 is not used. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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