linux-dev/arch/arc/configs, branch master

arc: update config files

2022-10-17T23:32:12Z

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 Signed-off-by: Vineet Gupta

treewide: defconfig: address renamed CONFIG_DEBUG_INFO=y

2022-09-12T04:55:05Z

CONFIG_DEBUG_INFO is now implicitly selected if one picks one of the explicit options that could be DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT, DEBUG_INFO_DWARF4, DEBUG_INFO_DWARF5. This was actually not what I had in mind when I suggested making it a 'choice' statement, but it's too late to change again now, and the Kconfig logic is more sensible in the new form. Change any defconfig file that had CONFIG_DEBUG_INFO enabled but did not pick DWARF4 or DWARF5 explicitly to now pick the toolchain default. Link: https://lkml.kernel.org/r/20220811114609.2097335-1-arnd@kernel.org Fixes: f9b3cd245784 ("Kconfig.debug: make DEBUG_INFO selectable from a choice") Signed-off-by: Arnd Bergmann Reviewed-by: Kees Cook Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Vineet Gupta Cc: Michal Simek Cc: Thomas Bogendoerfer Cc: Dinh Nguyen Cc: Yoshinori Sato Cc: Rich Felker Cc: Richard Weinberger Cc: Anton Ivanov Cc: Johannes Berg Cc: Chris Zankel Cc: Max Filippov Cc: Arnd Bergmann Signed-off-by: Andrew Morton

kbuild: drop support for CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3

2022-07-27T12:17:59Z

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 Signed-off-by: Masahiro Yamada

ARC: [plat-eznps]: Drop support for EZChip NPS platform

2020-10-06T04:02:29Z

NPS customers are no longer doing active development, as evident from rand config build failures reported in recent times, so drop support for NPS platform. Tested-by: kernel test robot Signed-off-by: Vineet Gupta

ARC: [plat-hsdk]: fix USB regression

2020-04-12T23:17:00Z

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: # 5.6.x Fixes: 5d50bd440bc2 ("drm/udl: Make udl driver depend on CONFIG_USB") Signed-off-by: Eugeniy Paltsev Signed-off-by: Vineet Gupta

ARC: Cleanup old Kconfig IO scheduler options

2020-02-10T06:17:22Z

CONFIG_IOSCHED_DEADLINE and CONFIG_IOSCHED_CFQ are gone since commit f382fb0bcef4 ("block: remove legacy IO schedulers"). The IOSCHED_DEADLINE was replaced by MQ_IOSCHED_DEADLINE and it will be now enabled by default (along with MQ_IOSCHED_KYBER). Signed-off-by: Krzysztof Kozlowski Signed-off-by: Vineet Gupta

Merge tag 'arc-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

2019-12-05T03:06:18Z

Pull ARC updates from Vineet Gupta - Jump Label support for ARC - kmemleak enabled - arc mm backend TLB Miss / flush optimizations - nSIM platform switching to dwuart (vs. arcuart) and ensuing defconfig updates and cleanups - axs platform pll / video-mode updates * tag 'arc-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: add kmemleak support ARC: [plat-axs10x]: remove hardcoded video mode from bootargs ARC: [plat-axs10x]: use pgu pll instead of fixed clock ARC: ARCv2: jump label: implement jump label patching ARC: mm: tlb flush optim: elide redundant uTLB invalidates for MMUv3 ARC: mm: tlb flush optim: elide repeated uTLB invalidate in loop ARC: mm: tlb flush optim: Make TLBWriteNI fallback to TLBWrite if not available ARC: mm: TLB Miss optim: avoid re-reading ECR ARCv2: mm: TLB Miss optim: Use double world load/stores LDD/STD ARCv2: mm: TLB Miss optim: SMP builds can cache pgd pointer in mmu scratch reg ARC: nSIM_700: remove unused network options ARC: nSIM_700: switch to DW UART usage ARC: merge HAPS-HS with nSIM-HS configs ARC: HAPS: cleanup defconfigs from unused ETH drivers ARC: HAPS: add HIGHMEM memory zone to DTS ARC: HAPS: use same UART configuration everywhere ARC: HAPS: cleanup defconfigs from unused IO-related options ARC: regenerate nSIM and HAPS defconfigs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2019-12-01T21:26:18Z

Pull sysctl system call removal from Eric Biederman: "As far as I can tell we have reached the point where no one enables the sysctl system call anymore. It still is enabled in a few defconfigs but they are mostly the rarely used one and in asking people about that it was more cut & paste enabled than anything else. This is single commit that just deletes code. Leaving just enough code so that the deprecated sysctl warning continues to be printed. If my analysis turns out to be wrong and someone actually cares it will be easy to revert this commit and have the system call again. There was one new xtensa defconfig in linux-next that enabled the system call this cycle and when asked about it the maintainer of the code replied that it was not enabled on purpose. As of today's linux-next tree that defconfig no longer enables the system call. What we saw in the review discussion was that if we go a step farther than my patch and mess with uapi headers there are pieces of code that won't compile, but nothing minds the system call actually disappearing from the kernel" Link: https://lore.kernel.org/lkml/201910011140.EA0181F13@keescook/ * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: sysctl: Remove the sysctl system call

sysctl: Remove the sysctl system call

2019-11-26T19:03:56Z

This system call has been deprecated almost since it was introduced, and in a survey of the linux distributions I can no longer find any of them that enable CONFIG_SYSCTL_SYSCALL. The only indication that I can find that anyone might care is that a few of the defconfigs in the kernel enable CONFIG_SYSCTL_SYSCALL. However this appears in only 31 of 414 defconfigs in the kernel, so I suspect this symbols presence is simply because it is harmless to include rather than because it is necessary. As there appear to be no users of the sysctl system call, remove the code. As this removes one of the few uses of the internal kernel mount of proc I hope this allows for even more simplifications of the proc filesystem. Cc: Alex Smith Cc: Anders Berg Cc: Apelete Seketeli Cc: Arnd Bergmann Cc: Chee Nouk Phoon Cc: Chris Zankel Cc: Christian Ruppert Cc: Greg Ungerer Cc: Harvey Hunt Cc: Helge Deller Cc: Hongliang Tao Cc: Hua Yan Cc: Huacai Chen Cc: John Crispin Cc: Jonas Jensen Cc: Josh Boyer Cc: Jun Nie Cc: Kevin Hilman Cc: Kevin Wells Cc: Kumar Gala Cc: Lars-Peter Clausen Cc: Ley Foon Tan Cc: Linus Walleij Cc: Markos Chandras Cc: Max Filippov Cc: Noam Camus Cc: Olof Johansson Cc: Paul Burton Cc: Paul Mundt Cc: Phil Edworthy Cc: Pierrick Hascoet Cc: Ralf Baechle Cc: Roland Stigge Cc: Santosh Shilimkar Cc: Scott Telford Cc: Stephen Boyd Cc: Steven J. Hill Cc: Tanmay Inamdar Cc: Vineet Gupta Cc: Wolfram Sang Acked-by: Andi Kleen Reviewed-by: Kees Cook Signed-off-by: "Eric W. Biederman"

ARC: nSIM_700: remove unused network options

2019-10-28T19:12:31Z

We have snps,arc-emac enabled in nSIM_700. It's obsolete and it's not used anymore so remove its device tree node and disable unused network options in defconfig. Signed-off-by: Eugeniy Paltsev Signed-off-by: Vineet Gupta