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* Merge tag 'arm64-upstream' of ↵Linus Torvalds2014-06-062-0/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into next Pull arm64 updates from Catalin Marinas: - Optimised assembly string/memory routines (based on the AArch64 Cortex Strings library contributed to glibc but re-licensed under GPLv2) - Optimised crypto algorithms making use of the ARMv8 crypto extensions (together with kernel API for using FPSIMD instructions in interrupt context) - Ftrace support - CPU topology parsing from DT - ESR_EL1 (Exception Syndrome Register) exposed to user space signal handlers for SIGSEGV/SIGBUS (useful to emulation tools like Qemu) - 1GB section linear mapping if applicable - Barriers usage clean-up - Default pgprot clean-up Conflicts as per Catalin. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (57 commits) arm64: kernel: initialize broadcast hrtimer based clock event device arm64: ftrace: Add system call tracepoint arm64: ftrace: Add CALLER_ADDRx macros arm64: ftrace: Add dynamic ftrace support arm64: Add ftrace support ftrace: Add arm64 support to recordmcount arm64: Add 'notrace' attribute to unwind_frame() for ftrace arm64: add __ASSEMBLY__ in asm/insn.h arm64: Fix linker script entry point arm64: lib: Implement optimized string length routines arm64: lib: Implement optimized string compare routines arm64: lib: Implement optimized memcmp routine arm64: lib: Implement optimized memset routine arm64: lib: Implement optimized memmove routine arm64: lib: Implement optimized memcpy routine arm64: defconfig: enable a few more common/useful options in defconfig ftrace: Make CALLER_ADDRx macros more generic arm64: Fix deadlock scenario with smp_send_stop() arm64: Fix machine_shutdown() definition arm64: Support arch_irq_work_raise() via self IPIs ...
| * ftrace: Add arm64 support to recordmcountAKASHI Takahiro2014-05-292-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recordmcount utility under scripts is run, after compiling each object, to find out all the locations of calling _mcount() and put them into specific seciton named __mcount_loc. Then linker collects all such information into a table in the kernel image (between __start_mcount_loc and __stop_mcount_loc) for later use by ftrace. This patch adds arm64 specific definitions to identify such locations. There are two types of implementation, C and Perl. On arm64, only C version is used to build the kernel now that CONFIG_HAVE_C_RECORDMCOUNT is on. But Perl version is also maintained. This patch also contains a workaround just in case where a header file, elf.h, on host machine doesn't have definitions of EM_AARCH64 nor R_AARCH64_ABS64. Without them, compiling C version of recordmcount will fail. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
* | scripts/checkpatch.pl: device_initcall is not the only __initcall substituteFabian Frederick2014-06-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | This patch adds a link to init.h to find appropriate initcall function to replace obsolete __initcall Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: check stable email addressJoe Perches2014-06-051-0/+6
| | | | | | | | | | | | | | It should be stable@vger.kernel.org, not stable@kernel.org. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: warn on unnecessary void function return statementsJoe Perches2014-06-051-0/+7
| | | | | | | | | | | | | | | | | | void function lines that use a single tab then "return;" are generally unnecessary. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: prefer kstrto<foo> to sscanf(buf, "%<lhuidx>", &bar);Joe Perches2014-06-051-0/+21
| | | | | | | | | | | | | | | | Use the kstrto<foo> functions in preference to sscanf. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: add warning for kmalloc/kzalloc with multiplyJoe Perches2014-06-051-0/+24
| | | | | | | | | | | | | | | | | | | | Protect against sizeof overflows by preferring kmalloc_array/kcalloc over kmalloc/kzalloc with a sizeof multiply. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: warn on #defines ending in semicolonJoe Perches2014-06-051-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using a #define ending in a semicolon is poor style and can lead to unexpected code paths being executed. Warn on uses of these #define types: #define foo[(...)] bar; #define foo[(...)] \ bar; Based on a patch from Borislav Petkov. Signed-off-by: Joe Perches <joe@perches.com> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: make --strict a default for files in drivers/net and net/Joe Perches2014-06-051-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | Networking files are generally more strictly conformant to linux-kernel style so make checkpatch more verbose by default for patches to files or when checking files in these directories. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: always warn on missing blank line after variable declaration blockJoe Perches2014-06-051-10/+34
| | | | | | | | | | | | | | | | Make the test system wide, modify the message too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: fix wildcard DT compatible string checkingRob Herring2014-06-051-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We attempt to search for compatible strings which use a variable token in the documented name such as <chip> or <soc>. While this was attempted to be handled, it's utterly broken. The desired forms of matching are: vendor,<chip>-* vendor,name<part#>-* For <chip>, lower case characters and numbers are permitted. For <part#>, only numeric values are allowed. With this change, the number of missing compatible strings reported in arch/arm/boot/dts is reduced from 1071 to 960. Reported-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Rob Herring <robh@kernel.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2014-06-041-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next Pull trivial tree changes from Jiri Kosina: "Usual pile of patches from trivial tree that make the world go round" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) staging: go7007: remove reference to CONFIG_KMOD aic7xxx: Remove obsolete preprocessor define of: dma: doc fixes doc: fix incorrect formula to calculate CommitLimit value doc: Note need of bc in the kernel build from 3.10 onwards mm: Fix printk typo in dmapool.c modpost: Fix comment typo "Modules.symvers" Kconfig.debug: Grammar s/addition/additional/ wimax: Spelling s/than/that/, wording s/destinatary/recipient/ aic7xxx: Spelling s/termnation/termination/ arm64: mm: Remove superfluous "the" in comment of: Spelling s/anonymouns/anonymous/ dma: imx-sdma: Spelling s/determnine/determine/ ath10k: Improve grammar in comments ath6kl: Spelling s/determnine/determine/ of: Improve grammar for of_alias_get_id() documentation drm/exynos: Spelling s/contro/control/ radio-bcm2048.c: fix wrong overflow check doc: printk-formats: do not mention casts for u64/s64 doc: spelling error changes ...
| * | modpost: Fix comment typo "Modules.symvers"Paul Bolle2014-05-051-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | scripts/checksyscalls.sh: Make renameat optionalJames Hogan2014-05-201-1/+4
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | The new renameat2 syscall provides all the functionality of renameat with an additional flags argument, so make renameat optional so that future architectures can omit it without getting a warning. This patch doesn't affect existing architectures. Signed-off-by: James Hogan <james.hogan@imgtec.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: linux-arch@vger.kernel.org
* | Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linuxLinus Torvalds2014-05-061-0/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa fixes from Chris Zankel: - Fixes allmodconfig, allnoconfig builds - Adds highmem support - Enables build-time exception table sorting. * tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux: xtensa: ISS: don't depend on CONFIG_TTY xtensa: xt2000: drop redundant sysmem initialization xtensa: add support for KC705 xtensa: xtfpga: introduce SoC I/O bus xtensa: add HIGHMEM support xtensa: optimize local_flush_tlb_kernel_range xtensa: dump sysmem from the bootmem_init xtensa: handle memmap kernel option xtensa: keep sysmem banks ordered in mem_reserve xtensa: keep sysmem banks ordered in add_sysmem_bank xtensa: split bootparam and kernel meminfo xtensa: enable sorting extable at build time xtensa: export __{invalidate,flush}_dcache_range xtensa: Export __invalidate_icache_range
| * | xtensa: enable sorting extable at build timeMax Filippov2014-04-011-0/+5
| | | | | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: David Daney <ddaney.cavm@gmail.com>
* | | Merge branch 'misc' of ↵Linus Torvalds2014-04-135-117/+192
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild changes from Michal Marek: "Here is the non-critical part of kbuild: - One bogus coccinelle check removed, one check fixed not to suggest the obsolete PTR_RET macro - scripts/tags.sh does not index the generated *.mod.c files - new objdiff tool to list differences between two versions of an object file - A fix for scripts/bootgraph.pl" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scripts/coccinelle: Use PTR_ERR_OR_ZERO scripts/bootgraph.pl: Add graphic header scripts: objdiff: detect object code changes between two commits Coccicheck: Remove memcpy to struct assignment test scripts/tags.sh: Ignore *.mod.c
| * | | scripts/coccinelle: Use PTR_ERR_OR_ZEROSachin Kamat2014-04-081-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PTR_RET is deprecated. Do not recommend its usage anymore. Use PTR_ERR_OR_ZERO instead. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | | scripts/bootgraph.pl: Add graphic headerFabian Frederick2014-04-081-2/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding -header + help function like other .pl in /scripts. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | | scripts: objdiff: detect object code changes between two commitsJason Cooper2014-04-081-0/+141
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | objdiff is useful when doing large code cleanups. For example, when removing checkpatch warnings and errors from new drivers in the staging tree. objdiff can be used in conjunction with a git rebase to confirm that each commit made no changes to the resulting object code. It has the same return values as diff(1). This was written specifically to support adding the skein and threefish cryto drivers to the staging tree. I needed a programmatic way to confirm that commits changing >90% of the lines didn't inadvertently change the code. Temporary files (objdump output) are stored in /path/to/linux/.tmp_objdiff 'make mrproper' will remove this directory. Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | | Coccicheck: Remove memcpy to struct assignment testPeter Senna Tschudin2014-03-291-103/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Coccinelle script scripts/coccinelle/misc/memcpy-assign.cocci look for opportunities to replace a call to memcpy by a struct assignment. This patch removes memcpy-assign.cocci as it is not clear that this convention has an impact on the generated code. Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | | scripts/tags.sh: Ignore *.mod.cPrarit Bhargava2014-02-061-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_MODVERSIONS=y results in a .mod.c for every compiled file in the kernel. Issuing a 'make cscope' on a compiled kernel tree results in the cscope files containing *.mod.c files. [prarit@prarit linux]# make cscope [prarit@prarit linux]# cat cscope.files | grep mod.c | wc -l 4807 These files are not useful for cscope and should be ignored. For example, # line filename / context / line 1 105 arch/x86/kvm/kvm-intel.mod.c <<GLOBAL>> { 0x618911fc, __VMLINUX_SYMBOL_STR(numa_node) }, 2 508 drivers/block/mtip32xx/mtip32xx.h <<GLOBAL>> int numa_node; 3 55 drivers/block/mtip32xx/mtip32xx.mod.c <<GLOBAL>> { 0x618911fc, __VMLINUX_SYMBOL_STR(numa_node) }, 4 37 drivers/cpufreq/acpi-cpufreq.mod.c <<GLOBAL>> { 0x618911fc, __VMLINUX_SYMBOL_STR(numa_node) }, <snip> Add an export to RCS_FIND_IGNORE so it can be used in scripts/tags.sh and add explicitly ignore *.mod.c files. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kirill Tkhai <tkhai@yandex.ru> Cc: Michael Opdenacker <michael.opdenacker@free-electrons.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | | kbuild: LLVMLinux: Fix LINUX_COMPILER definition script for compilation with ↵Jan-Simon Möller2014-04-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clang When building the LINUX_COMPILER definition, instead of merely taking the last line from "$(CC) -v", grep for ' version ' in the output. This supports both gcc and clang. Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Cc: PaX Team <pageexec@freemail.hu>
* | | | kbuild: LLVMLinux: Adapt warnings for compilation with clangJan-Simon Möller2014-04-091-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When compiling kernel with clang, disable warnings which are too noisy, and add the clang flag catch-undefined-behavior. Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <mcharleb@gmail.com> Cc: PaX Team <pageexec@freemail.hu>
* | | | Merge branch 'kbuild' of ↵Linus Torvalds2014-04-083-7/+4
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild changes from Michal Marek: - cleanups in the main Makefiles and Documentation/DocBook/Makefile - make O=... directory is automatically created if needed - mrproper/distclean removes the old include/linux/version.h to make life easier when bisecting across the commit that moved the version.h file * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: docbook: fix the include error when executing "make help" kbuild: create a build directory automatically for out-of-tree build kbuild: remove redundant '.*.cmd' pattern from make distclean kbuild: move "quote" to Kbuild.include to be consistent kbuild: docbook: use $(obj) and $(src) rather than specific path kbuild: unconditionally clobber include/linux/version.h on distclean kbuild: docbook: specify KERNELDOC dependency correctly kbuild: docbook: include cmd files more simply kbuild: specify build_docproc as a phony target
| * | | | kbuild: move "quote" to Kbuild.include to be consistentMasahiro Yamada2014-03-292-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | | | kbuild: specify build_docproc as a phony targetMasahiro Yamada2014-03-141-3/+3
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PHONY target is more suitable for "build_docproc" target. Because PHONY targets are always executed, they do not have to take FORCE as a prerequisite. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | | | kconfig: make allnoconfig disable options behind EMBEDDED and EXPERTJosh Triplett2014-04-086-6/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "make allnoconfig" exists to ease testing of minimal configurations. Documentation/SubmitChecklist includes a note to test with allnoconfig. This helps catch missing dependencies on common-but-not-required functionality, which might otherwise go unnoticed. However, allnoconfig still leaves many symbols enabled, because they're hidden behind CONFIG_EMBEDDED or CONFIG_EXPERT. For instance, allnoconfig still has CONFIG_PRINTK and CONFIG_BLOCK enabled, so drivers don't typically get build-tested with those disabled. To address this, introduce a new Kconfig option "allnoconfig_y", used on symbols which only exist to hide other symbols. Set it on CONFIG_EMBEDDED (which then selects CONFIG_EXPERT). allnoconfig will then disable all the symbols hidden behind those. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge tag 'modules-next-for-linus' of ↵Linus Torvalds2014-04-063-26/+66
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Nothing major: the stricter permissions checking for sysfs broke a staging driver; fix included. Greg KH said he'd take the patch but hadn't as the merge window opened, so it's included here to avoid breaking build" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: staging: fix up speakup kobject mode Use 'E' instead of 'X' for unsigned module taint flag. VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms. kallsyms: fix percpu vars on x86-64 with relocation. kallsyms: generalize address range checking module: LLVMLinux: Remove unused function warning from __param_check macro Fix: module signature vs tracepoints: add new TAINT_UNSIGNED_MODULE module: remove MODULE_GENERIC_TABLE module: allow multiple calls to MODULE_DEVICE_TABLE() per module module: use pr_cont
| * | | | kallsyms: fix percpu vars on x86-64 with relocation.Rusty Russell2014-03-172-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86-64 has a problem: per-cpu variables are actually represented by their absolute offsets within the per-cpu area, but the symbols are not emitted as absolute. Thus kallsyms naively creates them as offsets from _text, meaning their values change if the kernel is relocated (especially noticeable with CONFIG_RANDOMIZE_BASE): $ egrep ' (gdt_|_(stext|_per_cpu_))' /root/kallsyms.nokaslr 0000000000000000 D __per_cpu_start 0000000000004000 D gdt_page 0000000000014280 D __per_cpu_end ffffffff810001c8 T _stext ffffffff81ee53c0 D __per_cpu_offset $ egrep ' (gdt_|_(stext|_per_cpu_))' /root/kallsyms.kaslr1 000000001f200000 D __per_cpu_start 000000001f204000 D gdt_page 000000001f214280 D __per_cpu_end ffffffffa02001c8 T _stext ffffffffa10e53c0 D __per_cpu_offset Making them absolute symbols is the Right Thing, but requires fixes to the relocs tool. So for the moment, we add a --absolute-percpu option which makes them absolute from a kallsyms perspective: $ egrep ' (gdt_|_(stext|_per_cpu_))' /proc/kallsyms # no KASLR 0000000000000000 A __per_cpu_start 000000000000a000 A gdt_page 0000000000013040 A __per_cpu_end ffffffff802001c8 T _stext ffffffff8099b180 D __per_cpu_offset ffffffff809a3000 D __per_cpu_load $ egrep ' (gdt_|_(stext|_per_cpu_))' /proc/kallsyms # With KASLR 0000000000000000 A __per_cpu_start 000000000000a000 A gdt_page 0000000000013040 A __per_cpu_end ffffffff89c001c8 T _stext ffffffff8a39d180 D __per_cpu_offset ffffffff8a3a5000 D __per_cpu_load Based-on-the-original-screenplay-by: Andy Honig <ahonig@google.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Kees Cook <keescook@chromium.org>
| * | | | kallsyms: generalize address range checkingKees Cook2014-03-171-21/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This refactors the address range checks to be generalized instead of specific to text range checks, in preparation for other range checks. Also extracts logic for "is the symbol absolute" into a function. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | | | module: allow multiple calls to MODULE_DEVICE_TABLE() per moduleTom Gundersen2014-03-131-5/+9
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 78551277e4df5: "Input: i8042 - add PNP modaliases" had a bug, where the second call to MODULE_DEVICE_TABLE() overrode the first resulting in not all the modaliases being exposed. This fixes the problem by including the name of the device_id table in the __mod_*_device_table alias, allowing us to export several device_id tables per module. Suggested-by: Kay Sievers <kay@vrfy.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tom Gundersen <teg@jklm.no> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | | | checkpatch: don't warn on bitfield spaces around :Joe Perches2014-04-041-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This test prevents code from being aligned around the : for easy visual counting of bitfield lengths. ie: int foo : 1, int bar : 2, int foobar :29; should be acceptable so remove the test. Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: expand parenthesis alignment test to declarations, functions and ↵Joe Perches2014-04-041-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | assignments Currently the parenthesis alignment test works only on misalignments of if statements like if (foo(bar, baz) Expand the test to find misalignments like: static inline int foo(int bar, int baz) and foo(bar, baz); and foo = bar(baz, qux); Expand the $Inline keyword for __inline and __inline__ too. Add $Inline to $Declare so it also matches "static inline <foo>". These checks are only performed with --strict. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch.pl: add check for Change-IdChristopher Covington2014-04-041-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A commit hook for the Gerrit code review server [1] inserts change identifiers so Gerrit can track patches through multiple revisions. These identifiers are noise in the context of the upstream kernel. (Many Gerrit servers are private. Even given a public instance, given only a Change-Id, one must guess which server a change was tracked on. Patches submitted to the Linux kernel mailing lists should be able to stand on their own. If it's truly useful to reference code review on a Gerrit server, a URL is a much clearer way to do so.) Thus, issue an error when a Change-Id line is encountered before the Signed-off-by. 1. https://gerrit.googlesource.com/gerrit/+/master/gerrit-server/src/main/resources/com/google/gerrit/server/tools/root/hooks/commit-msg Signed-off-by: Christopher Covington <cov@codeaurora.org> Cc: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | scripts/checkpatch.pl: __GFP_NOFAIL isn't going awayAndrew Morton2014-04-041-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 7e4915e78992 ("checkpatch: add warning of future __GFP_NOFAIL use"). There are no plans to remove __GFP_NOFAIL. __GFP_NOFAIL exists to a) centralise the retry-allocation-for-ever operation into the core allocator, which is the appropriate implementation site and b) permit us to identify code sites which aren't handling memory exhaustion appropriately. Cc: David Rientjes <rientjes@google.com> Cc: Joe Perches <joe@perches.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: net and drivers/net: warn on missing blank line after variable ↵Joe Perches2014-04-041-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | declaration Networking prefers this style, so warn when it's not used. Networking uses: void foo(int bar) { int baz; code... } not void foo(int bar) { int baz; code... } There are a limited number of false positives when using macros to declare variables like: WARNING: networking uses a blank line after declarations #330: FILE: net/ipv4/inet_hashtables.c:330: + int dif = sk->sk_bound_dev_if; + INET_ADDR_COOKIE(acookie, saddr, daddr) Signed-off-by: Joe Perches <joe@perches.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: improve the compatible vendor matchFlorian Vaussard2014-04-041-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve the vendor name match in vendor-prefix.txt by only matching the exact vendor name at the beginning of lines. Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: check compatible strings in .c and .h tooFlorian Vaussard2014-04-041-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Look for ".compatible = "foo" strings not only in .dts files, but in .c and .h too. Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: fix spurious vendor compatible warningsFlorian Vaussard2014-04-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a compatible string like compatible = "foo"; checkpatch will currently try to find "foo" in vendor-prefixes.txt, which is wrong since the vendor prefix is empty in this specific case. Skip the vendor test if the compatible is not like compatible = "vendor,something"; Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: check vendor compatible with dashesFlorian Vaussard2014-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current vendor compatible check will not match vendors with dashes, like: compatible="asahi-kasei" Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Reported-by: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: improve octal permissions test speedJoe Perches2014-04-041-20/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current octal permissions test is very slow. When patch ("checkpatch: add checks for constant non-octal permissions") was added, processing time approximately tripled. Regain almost all of the performance by not looping through all the possible functions unless the line contains one of the functions. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch.pl: modify warning message for printk usageYogesh Chaudhari2014-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modify warning message when printk is used in a patch. It mentions to use subsystem_dbg instead of netdev_dbg as the first preferred format of logging debug messages. Signed-off-by: Yogesh Chaudhari <mr.yogesh@gmail.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: make "return is not a function" test quieterJoe Perches2014-04-041-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This test is a bit noisy and opinions seem to agree that it should not warn in a lot more situations. It seems people agree that: return (foo || bar); and return foo || bar; are both acceptable style and checkpatch should be silent about them. For now, it warns on parentheses around a simple constant or a single function or a ternary. return (foo); return (foo(bar)); return (foo ? bar : baz); The last ternary test may be quieted in the future. Modify the deparenthesize function to only strip balanced leading and trailing parentheses. Signed-off-by: Joe Perches <joe@perches.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Monam Agarwal <monamagarwal123@gmail.com> Cc: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: ignore networking block comment style first lines in fileJoe Perches2014-04-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's very common to have normal block comments for the initial comments of a file description preface. So for files in drivers/net and net/ don't emit a warning when the first comment block in the file uses the normal block comment style and not the networking block comment style. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: use a more consistent function argument styleJoe Perches2014-04-041-9/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of array indexing $_, use temporary variables like all the other subroutines in the script use. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: add test for char * arrays that could be static constJoe Perches2014-04-041-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | static const char* arrays create smaller text as each function call does not have to populate the array. Emit a warning when char *arrays aren't static const and the array is not apparently global by being declared in the first column. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: fix jiffies comparison and othersJoe Perches2014-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch could not distinguish between a variable in a struct named jiffies and the normal jiffies. foo->jiffies would emit a "Comparing jiffies" arning. Update the $Compare variable to do a negative look-behind for "-" when finding a ">" so that a pointer dereference like -> isn't a comparison. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: avoid sscanf test duplicated messagesJoe Perches2014-04-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change a test of $dstat to $line to avoid possibly emitting the sscanf warning multiple times. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | checkpatch: update octal permissions warningJoe Perches2014-04-041-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When checking permissions, make sure 4 octal digits are used, but allow a single 0 too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 11:15:00 +0100