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2022-04-26ARC: disasm: handle ARCv2 case in kprobe get/set functionsSergey Matyukevich1-2/+62
Current implementation of get_reg/set_reg implies ARCompact layout of pt_regs structure. Meanwhile pt_regs structure differs between ARCompact and ARCv2. Update those functions to handle ARCv2. Tested-by: kernel test robot <[email protected]> Signed-off-by: Sergey Matyukevich <[email protected]> Signed-off-by: Vineet Gupta <[email protected]>
2022-04-18ARC: Remove a redundant memset()Christophe JAILLET1-1/+0
disasm_instr() already call memset(0) on its 2nd argument, so there is no need to clear it explicitly before calling this function. Remove the redundant memset(). Signed-off-by: Christophe JAILLET <[email protected]> Signed-off-by: Vineet Gupta <[email protected]>
2022-04-18ARC: fix typos in commentsJulia Lawall1-1/+1
Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: Vineet Gupta <[email protected]>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva1-1/+1
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <[email protected]>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Enrico Weigelt <[email protected]> Reviewed-by: Kate Stewart <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2014-10-13ARC: rename kconfig option for unaligned emulationVineet Gupta1-2/+2
Signed-off-by: Vineet Gupta <[email protected]>
2013-05-09Merge tag 'arc-v3.10-rc1-part1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC port updates from Vineet Gupta: "Support for two new platforms based on ARC700: - Abilis TB10x SoC [Chritisian/Pierrick] - Simulator only System-C Model [Mischa] ARC specific MM improvements: - Avoid full TLB flush (ASID increment) on munmap (even single page) - VIPT Cache Flushing improvements + Delayed dcache flush for non-aliasing dcache (big performance boost) + icache flush aliasing agnostic (no need to kill all possible aliases) Others: - Avoid needless rebuild of DTB files for every kernel build - Remove builtin cmdline as that is already provided by DeviceTree/bootargs - Fixing unaligned access emulation corner case - checkpatch fixes [Sachin] - Various fixlets [Noam] - Minor build failures/cleanups" * tag 'arc-v3.10-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (35 commits) ARC: [mm] Lazy D-cache flush (non aliasing VIPT) ARC: [mm] micro-optimize page size icache invalidate ARC: [mm] remove the pessimistic all-alias-invalidate icache helpers ARC: [mm] consolidate icache/dcache sync code ARC: [mm] optimise icache flush for kernel mappings ARC: [mm] optimise icache flush for user mappings ARC: [mm] optimize needless full mm TLB flush on munmap ARC: Add support for nSIM OSCI System C model ARC: [TB10x] Adapt device tree to new compatible string ARC: [TB10x] Add support for TB10x platform ARC: [TB10x] Device tree of TB100 and TB101 Development Kits ARC: Prepare interrupt code for external controllers ARC: Allow embedded arc-intc to be properly placed in DT intc hierarchy ARC: [cmdline] Don't overwrite u-boot provided bootargs ARC: [cmdline] Remove CONFIG_CMDLINE ARC: [plat-arcfpga] defconfig update ARC: unaligned access emulation broken if callee-reg dest of LD/ST ARC: unaligned access emulation error handling consolidation ARC: Debug/crash-printing Improvements ARC: fix typo with clock speed ...
2013-04-09ARC: Use <linux/*> headers instead of <asm/*>Sachin Kamat1-1/+1
Silences the following checkpatch warnings: WARNING: Use #include <linux/ptrace.h> instead of <asm/ptrace.h> WARNING: Use #include <linux/kprobes.h> instead of <asm/kprobes.h> WARNING: Use #include <linux/kgdb.h> instead of <asm/kgdb.h> WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h> WARNING: Use #include <linux/cache.h> instead of <asm/cache.h> Signed-off-by: Sachin Kamat <[email protected]> Signed-off-by: Vineet Gupta <[email protected]>
2013-03-18arc: fix incorrect ifdef commentPaul Bolle1-1/+1
Signed-off-by: Paul Bolle <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2013-02-15ARC: Unaligned access emulationVineet Gupta1-1/+1
ARC700 doesn't natively support unaligned access, but can be emulated -Unaligned Access Exception -Disassembly at the Fault address to find the exact insn (long/short) Also per Arnd's comment, we runtime control it using 2 sysctl knobs: * SYSCTL_ARCH_UNALIGN_ALLOW: Runtime enable/disble * SYSCTL_ARCH_UNALIGN_NO_WARN: Warn on each emulation attempt Originally contributed by Tim Yao <[email protected]> Signed-off-by: Vineet Gupta <[email protected]> Cc: Tim Yao <[email protected]> Acked-by: Arnd Bergmann <[email protected]>
2013-02-15ARC: kprobes supportVineet Gupta1-3/+2
Origin port done by Rajeshwar Ranga Signed-off-by: Vineet Gupta <[email protected]> Cc: Rajeshwar Ranga <[email protected]>
2013-02-15ARC: disassembly (needed by kprobes/kgdb/unaligned-access-emul)Vineet Gupta1-0/+539
In-kernel disassembler Due Credits * Orig written by Rajeshwar Ranga * Consolidation/cleanups by Mischa Jonker Signed-off-by: Vineet Gupta <[email protected]> Cc: Rajeshwar Ranga <[email protected]> Cc: Mischa Jonker <[email protected]>
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