- 02 11月, 2017 1 次提交
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由 Greg Kroah-Hartman 提交于
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license 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 binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the 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 cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base 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 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately 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 license identifiers 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 the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version 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 correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: NKate Stewart <kstewart@linuxfoundation.org> Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com> Reviewed-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 11 9月, 2017 1 次提交
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由 Nicolas Pitre 提交于
The .data segment stored in ROM is only copied to RAM once at boot time and never referenced afterwards. This is arguably a suboptimal usage of ROM resources. This patch allows for compressing the .data segment before storing it into ROM and decompressing it to RAM rather than simply copying it, saving on precious ROM space. Because global data is not available yet (obviously) we must allocate decompressor workspace memory on the stack. The .bss area is used as a stack area for that purpose before it is cleared. The required stack frame is 9568 bytes for __inflate_kernel_data() alone, so make sure the .bss is large enough to cope with that plus extra room for called functions or fail the build. Those numbers were picked arbitrarily based on the above 9568 byte stack frame: 10240 (2.5 * PAGE_SIZE): used to override -Wframe-larger-than whose default value is 1024. 12288 (3 * PAGE_SIZE): minimum .bss size to contain the stack. Signed-off-by: NNicolas Pitre <nico@linaro.org> Reviewed-by: NArd Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: NChris Brandt <Chris.Brandt@renesas.com>
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- 23 11月, 2016 1 次提交
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由 Russell King 提交于
This reverts commit 4dd1837d. Moving the exports for assembly code into the assembly files breaks KSYM trimming, but also breaks modversions. While fixing the KSYM trimming is trivial, fixing modversions brings us to a technically worse position that we had prior to the above change: - We end up with the prototype definitions divorsed from everything else, which means that adding or removing assembly level ksyms become more fragile: * if adding a new assembly ksyms export, a missed prototype in asm-prototypes.h results in a successful build if no module in the selected configuration makes use of the symbol. * when removing a ksyms export, asm-prototypes.h will get forgotten, with armksyms.c, you'll get a build error if you forget to touch the file. - We end up with the same amount of include files and prototypes, they're just in a header file instead of a .c file with their exports. As for lines of code, we don't get much of a size reduction: (original commit) 47 files changed, 131 insertions(+), 208 deletions(-) (fix for ksyms trimming) 7 files changed, 18 insertions(+), 5 deletions(-) (two fixes for modversions) 1 file changed, 34 insertions(+) 3 files changed, 7 insertions(+), 2 deletions(-) which results in a net total of only 25 lines deleted. As there does not seem to be much benefit from this change of approach, revert the change. Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
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- 08 8月, 2016 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 22 2月, 2016 2 次提交
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由 Jean-Philippe Brucker 提交于
ARMv6 CPUs do not have virtualisation extensions, but hyp-stub.S is still included into the image to keep it generic. In order to use ARMv7 instructions during HYP initialisation, add -march=armv7-a flag to hyp-stub's build. On an ARMv6 CPU, __hyp_stub_install returns as soon as it detects that the mode isn't HYP, so we will never reach those instructions. Signed-off-by: NJean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jean-Philippe Brucker 提交于
ARMv6 CPUs do not have virtualisation extensions, but hyp-stub.S is still included into the image to keep it generic. In order to use ARMv7 instructions during HYP initialisation, add -march=armv7-a flag to hyp-stub's build. On an ARMv6 CPU, __hyp_stub_install returns as soon as it detects that the mode isn't HYP, so we will never reach those instructions. Signed-off-by: NJean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 05 1月, 2016 2 次提交
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由 Jens Wiklander 提交于
Switch to use a generic interface for issuing SMC/HVC based on ARM SMC Calling Convention. Removes now the now unused psci-call.S. Acked-by: NWill Deacon <will.deacon@arm.com> Reviewed-by: NMark Rutland <mark.rutland@arm.com> Tested-by: NMark Rutland <mark.rutland@arm.com> Acked-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: NJens Wiklander <jens.wiklander@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Jens Wiklander 提交于
Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC for architectures that may support arm-smccc. It's the responsibility of the caller to know if the SMC instruction is supported by the platform. Reviewed-by: NLars Persson <lars.persson@axis.com> Signed-off-by: NJens Wiklander <jens.wiklander@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 04 1月, 2016 1 次提交
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由 Ard Biesheuvel 提交于
The PJ4 inline asm sequence to write to cp15 cannot be built in Thumb-2 mode, due to the way it performs arithmetic on the program counter, so it is built in ARM mode instead. However, building C files in ARM mode under CONFIG_THUMB2_KERNEL is problematic, since the instrumentation performed by subsystems like ftrace does not expect having to deal with interworking branches. Since the sequence in question is simply a poor man's ISB instruction, let's use a straight 'isb' instead when building in Thumb2 mode. Thumb2 implies V7, so 'isb' should always be supported in that case. Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 21 12月, 2015 1 次提交
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由 Stefano Stabellini 提交于
Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM. The only paravirt interface supported is pv_time_ops.steal_clock, so no runtime pvops patching needed. This allows us to make use of steal_account_process_tick for stolen ticks accounting. Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: NChristopher Covington <cov@codeaurora.org> Acked-by: NIan Campbell <ian.campbell@citrix.com> Acked-by: NRussell King <linux@arm.linux.org.uk>
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- 14 12月, 2015 1 次提交
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由 Ard Biesheuvel 提交于
This adds support to the kernel proper for booting via UEFI. It shares most of the code with arm64, so this patch mostly just wires it up for use with ARM. Note that this does not include the EFI stub, it is added in a subsequent patch. Tested-by: NRyan Harkin <ryan.harkin@linaro.org> Reviewed-by: NMatt Fleming <matt@codeblueprint.co.uk> Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
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- 03 8月, 2015 1 次提交
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由 Mark Rutland 提交于
Now that the common PSCI client code has been factored out to drivers/firmware, and made safe for 32-bit use, move the 32-bit ARM code over to it. This results in a moderate reduction of duplicated lines, and will prevent further duplication as the PSCI client code is updated for PSCI 1.0 and beyond. The two legacy platform users of the PSCI invocation code are updated to account for interface changes. In both cases the power state parameter (which is constant) is now generated using macros, so that the pack/unpack logic can be killed in preparation for PSCI 1.0 power state changes. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Acked-by: NRob Herring <robh@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ashwin Chaugule <ashwin.chaugule@linaro.org> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 31 7月, 2015 1 次提交
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由 Mark Rutland 提交于
To enable sharing of the arm_pmu code with arm64, this patch factors it out to drivers/perf/. A new drivers/perf directory is added for performance monitor drivers to live under. MAINTAINERS is updated accordingly. Files added previously without a corresponsing MAINTAINERS update (perf_regs.c, perf_callchain.c, and perf_event.h) are also added. Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NMark Rutland <mark.rutland@arm.com> [will: augmented Kconfig help slightly] Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 29 5月, 2015 1 次提交
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由 Mark Rutland 提交于
Now that the arm_pmu framework is only used for CPU PMUs, there's no reason to keep the pseudo-generic and CPU-specific framework portions separate. This patch folds the two into perf_event.c. Signed-off-by: NMark Rutland <mark.rutland@arm.com> [will: fixed up irq cfg to match upstream] Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 28 5月, 2015 3 次提交
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由 Mark Rutland 提交于
Now that the core arm perf code maintains no global state and all microarchitecture-specific PMU data can be fed in through the shared probe function, it's possible to use it as a library and get rid of the C file includes we have currently. This patch factors out the ARMv7-specific portions out into the ARMv7 driver. For the moment this is always built if perf event support is enabled, but the preprocessor guards will leave behind an empty file. Now that perf_event_cpu.c contains no microarchitecture-specific data, the associated probing code is removed, completing its relegation to a library file. The vestigal "arm-pmu" platform device ID is removed in this patch, as it has been unused since platform files were updated to specify a more specific PMU variant. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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由 Mark Rutland 提交于
Now that the core arm perf code maintains no global state and all microarchitecture-specific PMU data can be fed in through the shared probe function, it's possible to use it as a library and get rid of the C file includes we have currently. This patch factors out the ARMv6-specific portions out into the ARMv6 driver. For the moment this is always built if perf event support is enabled, but the preprocessor guards will leave behind an empty file. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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由 Mark Rutland 提交于
Now that the core arm perf code maintains no global state and all microarchitecture-specific PMU data can be fed in through the shared probe function, it's possible to use it as a library and get rid of the C file includes we have currently. This patch factors out the xscale-specific portions out into the xscale driver. For the moment this is always built if perf event support is enabled, but the preprocessor guards will leave behind an empty file. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 08 5月, 2015 1 次提交
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由 Ard Biesheuvel 提交于
Loading modules far away from the kernel in memory is problematic because the 'bl' instruction only has limited reach, and modules are not built with PLTs. Instead of using the -mlong-calls option (which affects all compiler emitted bl instructions, but not the ones in assembler), this patch allocates some additional space at module load time, and populates it with PLT like veneers when encountering relocations that are out of range. This should work with all relocations against symbols exported by the kernel, including those resulting from GCC generated implicit function calls for ftrace etc. The module memory size increases by about 5% on average, regardless of whether any PLT entries were actually needed. However, due to the page based rounding that occurs when allocating module memory, the average memory footprint increase is negligible. Reviewed-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 4月, 2015 1 次提交
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由 Richard Weinberger 提交于
The RISC OS personality seems to be unused and untested for a long time. It is doubtful whether this personality worked ever as expected. Let's rip it out. Signed-off-by: NRichard Weinberger <richard@nod.at> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 4月, 2015 1 次提交
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由 Russell King 提交于
Move shutdown and reboot related code to a separate file, out of process.c. This helps to avoid polluting process.c with non-process related code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 3月, 2015 1 次提交
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由 Mark Rutland 提交于
arm64 builds with GCC 5 have caused the __asmeq assertions in the PSCI calling code to fire, so move the ARM PSCI calls out of line into their own assembly file for consistency and to safeguard against the same issue occuring with the 32-bit toolchain. [will: brought into line with arm64 implementation] Reported-by: NAndy Whitcroft <apw@canonical.com> Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 28 3月, 2015 1 次提交
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由 Nathan Lynch 提交于
Allow users to enable the vdso in Kconfig; include the vdso in the build if CONFIG_VDSO is enabled. Add 'vdso_install' target. Signed-off-by: NNathan Lynch <nathan_lynch@mentor.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 14 1月, 2015 1 次提交
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由 Wang Nan 提交于
This patch introduce kprobeopt for ARM 32. Limitations: - Currently only kernel compiled with ARM ISA is supported. - Offset between probe point and optinsn slot must not larger than 32MiB. Masami Hiramatsu suggests replacing 2 words, it will make things complex. Futher patch can make such optimization. Kprobe opt on ARM is relatively simpler than kprobe opt on x86 because ARM instruction is always 4 bytes aligned and 4 bytes long. This patch replace probed instruction by a 'b', branch to trampoline code and then calls optimized_callback(). optimized_callback() calls opt_pre_handler() to execute kprobe handler. It also emulate/simulate replaced instruction. When unregistering kprobe, the deferred manner of unoptimizer may leave branch instruction before optimizer is called. Different from x86_64, which only copy the probed insn after optprobe_template_end and reexecute them, this patch call singlestep to emulate/simulate the insn directly. Futher patch can optimize this behavior. Signed-off-by: NWang Nan <wangnan0@huawei.com> Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Will Deacon <will.deacon@arm.com> Reviewed-by: NJon Medhurst (Tixy) <tixy@linaro.org> Signed-off-by: NJon Medhurst <tixy@linaro.org>
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- 09 1月, 2015 1 次提交
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由 Wang Nan 提交于
In discussion on LKML (https://lkml.org/lkml/2014/11/28/158), Russell King suggests to move all probe related code to arch/arm/probes. This patch does the work. Due to dependency on 'arch/arm/kernel/patch.h', this patch also moves patch.h to 'arch/arm/include/asm/patch.h', and related '#include' directives are also midified to '#include <asm/patch.h>'. Following is an overview of this patch: ./arch/arm/kernel/ ./arch/arm/probes/ |-- Makefile |-- Makefile |-- probes-arm.c ==> |-- decode-arm.c |-- probes-arm.h ==> |-- decode-arm.h |-- probes-thumb.c ==> |-- decode-thumb.c |-- probes-thumb.h ==> |-- decode-thumb.h |-- probes.c ==> |-- decode.c |-- probes.h ==> |-- decode.h | |-- kprobes | | |-- Makefile |-- kprobes-arm.c ==> | |-- actions-arm.c |-- kprobes-common.c ==> | |-- actions-common.c |-- kprobes-thumb.c ==> | |-- actions-thumb.c |-- kprobes.c ==> | |-- core.c |-- kprobes.h ==> | |-- core.h |-- kprobes-test-arm.c ==> | |-- test-arm.c |-- kprobes-test.c ==> | |-- test-core.c |-- kprobes-test.h ==> | |-- test-core.h |-- kprobes-test-thumb.c ==> | `-- test-thumb.c | `-- uprobes | |-- Makefile |-- uprobes-arm.c ==> |-- actions-arm.c |-- uprobes.c ==> |-- core.c |-- uprobes.h ==> `-- core.h | `-- patch.h ==> arch/arm/include/asm/patch.h Signed-off-by: NWang Nan <wangnan0@huawei.com> Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NJon Medhurst <tixy@linaro.org>
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- 04 12月, 2014 1 次提交
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由 Ard Biesheuvel 提交于
Two files that get included when building the multi_v7_defconfig target fail to build when selecting THUMB2_KERNEL for this configuration. In both cases, we can just build the file as ARM code, as none of its symbols are exported to modules, so there are no interworking concerns. In the iwmmxt.S case, add ENDPROC() declarations so the symbols are annotated as functions, resulting in the linker to emit the appropriate mode switches. Acked-by: NNicolas Pitre <nico@linaro.org> Tested-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 21 11月, 2014 1 次提交
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由 Russell King 提交于
The ftrace assembly code doesn't need to live in entry-common.S and be surrounded with #ifdef CONFIG_FUNCTION_TRACER. Instead, move it to its own file and conditionally assemble it. Tested-by: NFelipe Balbi <balbi@ti.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 08 11月, 2014 1 次提交
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由 Mathieu Poirier 提交于
Removing minimal support for etb/etm to favour an implementation that is more flexible, extensible and capable of handling more platforms. Also removing the only client of the old driver. That code can easily be replaced by entries for etb/etm in the device tree. Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 30 10月, 2014 1 次提交
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由 Mark Rutland 提交于
The ARM callchain handling code is currently bundled with the ARM PMU management code, despite the two having no dependency on each other. This bundling has the unfortunate property of making callchain handling depend on CONFIG_HW_PERF_EVENTS, even though the callchain handling could be applied to software events in the absence of PMU hardware support. This patch separates the two, placing the callchain handling in perf_callchain.c and making it depend on CONFIG_PERF_EVENTS rather than CONFIG_HW_PERF_EVENTS, enabling callchain recording on kernels built without hardware perf event support. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Reviewed-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 17 10月, 2014 1 次提交
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由 Doug Anderson 提交于
Handle the case where someone has set the text segment of the kernel as read-only by using the newly introduced "patch" mechanism. Signed-off-by: NDoug Anderson <dianders@chromium.org> [kees: switched structure size check to BUILD_BUG_ON (sboyd)] Signed-off-by: NKees Cook <keescook@chromium.org> Acked-by: NNicolas Pitre <nico@linaro.org>
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- 25 4月, 2014 1 次提交
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由 Sebastian Hesselbarth 提交于
Some Marvell PJ4B CPUs also implement iWMMXt extensions. With a proper check for iWMMXt coprocessors now in place, enable it by default on PJ4B. While at it, also allow to manually select the corresponding Kconfig option. Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: NKevin Hilman <khilman@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 23 4月, 2014 1 次提交
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由 Sebastian Capella 提交于
Enable hibernation for ARM architectures and provide ARM architecture specific calls used during hibernation. The swsusp hibernation framework depends on the platform first having functional suspend/resume. Then, in order to enable hibernation on a given platform, a platform_hibernation_ops structure may need to be registered with the system in order to save/restore any SoC-specific / cpu specific state needing (re)init over a suspend-to-disk/resume-from-disk cycle. For example: - "secure" SoCs that have different sets of control registers and/or different CR reg access patterns. - SoCs with L2 caches as the activation sequence there is SoC-dependent; a full off-on cycle for L2 is not done by the hibernation support code. - SoCs requiring steps on wakeup _before_ the "generic" parts done by cpu_suspend / cpu_resume can work correctly. - SoCs having persistent state which is maintained during suspend and resume, but will be lost during the power off cycle after suspend-to-disk. This is a rebase/rework of Frank Hofmann's v5 hibernation patchset. Acked-by: NRuss Dill <Russ.Dill@ti.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: NSebastian Capella <sebastian.capella@linaro.org> Acked-by: NPavel Machek <pavel@ucw.cz> Reviewed-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> [fixed duplicate virt_to_pfn() definition --rmk] Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 19 3月, 2014 3 次提交
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由 David A. Long 提交于
Using Rabin Vincent's ARM uprobes patches as a base, enable uprobes support on ARM. Caveats: - Thumb is not supported Signed-off-by: NRabin Vincent <rabin@rab.in> Signed-off-by: NDavid A. Long <dave.long@linaro.org>
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由 David A. Long 提交于
Move the thumb version of the kprobes instruction parsing code into more generic files from where it can be used by uprobes and possibly other subsystems. The symbol names will be made more generic in a subsequent part of this patchset. Signed-off-by: NDavid A. Long <dave.long@linaro.org> Acked-by: NJon Medhurst <tixy@linaro.org>
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由 David A. Long 提交于
Move the arm version of the kprobes instruction parsing code into more generic files from where it can be used by uprobes and possibly other subsystems. The symbol names will be made more generic in a subsequent part of this patchset. Signed-off-by: NDavid A. Long <dave.long@linaro.org> Acked-by: NJon Medhurst <tixy@linaro.org>
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- 20 10月, 2013 1 次提交
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由 Victor Kamensky 提交于
In case of BE8 kernel data is in BE order whereas code stays in LE order. Move sigreturn_codes to separate .S file and use proper assembler mnemonics for these code snippets. In this case compiler will take care of proper instructions byteswaps for BE8 case. Change assumes that sufficiently Thumb-capable tools are used to build kernel. Problem was discovered during ltp testing of BE system: all rt_sig* tests failed. Tested against the same tests in both BE and LE modes. Signed-off-by: NVictor Kamensky <victor.kamensky@linaro.org> Reviewed-by: NDave Martin <Dave.Martin@arm.com> Signed-off-by: NBen Dooks <ben.dooks@codethink.co.uk>
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- 30 9月, 2013 1 次提交
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由 Will Deacon 提交于
This patch implements the functions required for the perf registers API, allowing the perf tool to interface kernel register dumps with libunwind in order to provide userspace backtracing. Cc: Jean Pihet <jean.pihet@linaro.org> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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- 02 9月, 2013 1 次提交
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由 Uwe Kleine-König 提交于
The newly introduced function is to be used as .restart callback for ARMv7-M machines. The used register is architecturally defined, so it should work for all M-class machines. Acked-by: NJonathan Austin <jonathan.austin@arm.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 13 6月, 2013 1 次提交
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由 Stephen Boyd 提交于
Nothing about the sched_clock implementation in the ARM port is specific to the architecture. Generalize the code so that other architectures can use it by selecting GENERIC_SCHED_CLOCK. Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> [jstultz: Merge minor collisions with other patches in my tree] Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
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- 08 6月, 2013 1 次提交
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由 Jonathan Austin 提交于
Without an MMU we don't need to do any TLB maintenance. Until the addition of 93dc6887 (ARM: 7684/1: errata: Workaround for Cortex-A15 erratum 798181 (TLBI/DSB operations)) building the tlb maintenance ops in smp_tlb.c worked, though none of the contents were used. Since that commit, however, SMP NOMMU has not been able to build. This patch restores that ability by making the building of smp_tlb.c dependent on MMU. Signed-off-by: NJonathan Austin <jonathan.austin@arm.com> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> CC: Will Deacon <will.deacon@arm.com>
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- 21 5月, 2013 1 次提交
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由 Stefano Stabellini 提交于
Rename virt_smp_ops to psci_smp_ops and move them to arch/arm/kernel/psci_smp.c. Remove mach-virt/platsmp.c, now unused. Compile psci_smp if CONFIG_ARM_PSCI and CONFIG_SMP. Add a cpu_die smp_op based on psci_ops.cpu_off. Initialize PSCI before setting smp_ops in setup_arch. If PSCI is available on the platform, prefer psci_smp_ops over the platform smp_ops. Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: NWill Deacon <will.deacon@arm.com> CC: arnd@arndb.de CC: marc.zyngier@arm.com CC: linux@arm.linux.org.uk CC: nico@linaro.org CC: rob.herring@calxeda.com
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