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2014-06-27Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS fixes from Ralf Baechle: "This is dominated by a large number of changes necessary for the MIPS BPF code. code. Aside of that there are - a fix for the MSC system controller support code. - a Turbochannel fix. - a recordmcount fix that's MIPS-specific. - barrier fixes to smp-cps / pm-cps after unrelated changes elsewhere in the kernel. - revert support for MSA registers in the signal frames. The reverted patch did modify the signal stack frame which of course is inacceptable. - fix math-emu build breakage with older compilers. - some related cleanup. - fix Lasat build error if CONFIG_CRC32 isn't set to y by the user" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (27 commits) MIPS: Lasat: Fix build error if CRC32 is not enabled. TC: Handle device_register() errors. MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region MIPS: bpf: Fix stack space allocation for BPF memwords on MIPS64 MIPS: BPF: Use 32 or 64-bit load instruction to load an address to register MIPS: bpf: Fix PKT_TYPE case for big-endian cores MIPS: BPF: Prevent kernel fall over for >=32bit shifts MIPS: bpf: Drop update_on_xread and always initialize the X register MIPS: bpf: Fix is_range() semantics MIPS: bpf: Use pr_debug instead of pr_warn for unhandled opcodes MIPS: bpf: Fix return values for VLAN_TAG_PRESENT case MIPS: bpf: Use correct mask for VLAN_TAG case MIPS: bpf: Fix branch conditional for BPF_J{GT/GE} cases MIPS: bpf: Add SEEN_SKB to flags when looking for the PKT_TYPE MIPS: bpf: Use 'andi' instead of 'and' for the VLAN cases MIPS: bpf: Return error code if the offset is a negative number MIPS: bpf: Use the LO register to get division's quotient MIPS: mm: uasm: Fix lh micro-assembler instruction MIPS: uasm: Add SLT uasm instruction MIPS: uasm: Add s3s1s2 instruction builder ...
2014-06-26recordmcount/MIPS: Fix possible incorrect mcount_loc table entries in modulesAlex Smith
On MIPS calls to _mcount in modules generate 2 instructions to load the _mcount address (and therefore 2 relocations). The mcount_loc table should only reference the first of these, so the second is filtered out by checking the relocation offset and ignoring ones that immediately follow the previous one seen. However if a module has an _mcount call at offset 0, the second relocation would not be filtered out due to old_r_offset == 0 being taken to mean that the current relocation is the first one seen, and both would end up in the mcount_loc table. This results in ftrace_make_nop() patching both (adjacent) instructions to branches over the _mcount call sequence like so: 0xffffffffc08a8000: 04 00 00 10 b 0xffffffffc08a8014 0xffffffffc08a8004: 04 00 00 10 b 0xffffffffc08a8018 0xffffffffc08a8008: 2d 08 e0 03 move at,ra ... The second branch is in the delay slot of the first, which is defined to be unpredictable - on the platform on which this bug was encountered, it triggers a reserved instruction exception. Fix by initializing old_r_offset to ~0 and using that instead of 0 to determine whether the current relocation is the first seen. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7098/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-06-23checkpatch: reduce false positives when checking void function return statementsJoe Perches
The previous patch had a few too many false positives on styles that should be acceptable. Signed-off-by: Joe Perches <joe@perches.com> Tested-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-18builddeb: fix missing headers in linux-headers packageFathi Boudra
The kernel headers package (linux-headers) doesn't include several header files required to build out-of-tree modules. It makes the package unusable on e.g. ARM architecture: /usr/src/linux-headers-3.14.0/arch/arm/include/asm/memory.h:24:25: fatal error: mach/memory.h: No such file or directory #include <mach/memory.h> ^ compilation terminated. Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-18kbuild: Fix tar-pkg with relative $(objtree)Michal Marek
Commit 7e1c0477 (kbuild: Use relative path for $(objtree)) assumes that the build process does not change its working directory. make tar-pkg was a couterexample, fix this by changing directory only for the tar command and not for the whole script, which at one point references the now relative $(objtree). Reported-and-tested-by: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-18deb-pkg: Fix for relative pathsMichal Marek
When $srctree or $objtree are relative paths, we cannot change directory and refer to them in the same subshell. Do the redirection outside of the subshell to fix this. Reported-and-tested-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-12Merge branch 'misc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild misc updates from Michal Marek: "This is the non-critical part of kbuild for v3.16-rc1: - make deb-pkg can do s390x and arm64 - new patterns in scripts/tags.sh - scripts/tags.sh skips userspace tools' sources (which sometimes have copies of kernel structures) and symlinks - improvements to the objdiff tool - two new coccinelle patches - other minor fixes" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scripts: objdiff: support directories for the augument of record command scripts: objdiff: fix a comment scripts: objdiff: change the extension of disassembly from .o to .dis scripts: objdiff: improve path flexibility for record command scripts: objdiff: remove unnecessary code scripts: objdiff: direct error messages to stderr scripts: objdiff: get the path to .tmp_objdiff more simply deb-pkg: Add automatic support for s390x architecture coccicheck: Add unneeded return variable test kbuild: Fix a typo in documentation kbuild: trivial - use tabs for code indent where possible kbuild: trivial - remove trailing empty lines coccinelle: Check for missing NULL terminators in of_device_id tables scripts/tags.sh: ignore symlink'ed source files scripts/tags.sh: add regular expression replacement pattern for memcg builddeb: add arm64 in the supported architectures builddeb: use $OBJCOPY variable instead of objcopy scripts/tags.sh: ignore code of user space tools scripts/tags.sh: add pattern for DEFINE_HASHTABLE .gitignore: ignore Module.symvers in all directories
2014-06-12Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild updates from Michal Marek: "Kbuild changes for v3.16-rc1: - cross-compilation fix so that cc-option is testing the right compiler - Fix for make defconfig all - Using relative paths to the object and source directory where possible, plus fixes for the fallout of the change - several cleanups in the Makefiles and scripts The powerpc fix is from today, because it was only discovered recently. The rest has been in linux-next for some time" * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: powerpc: Avoid circular dependency with zImage.% kbuild: create include/config directory in scripts/kconfig/Makefile kbuild: do not create include/linux directory Makefile: Fix unrecognized cross-compiler command line options kbuild: do not add "selinux" to subdir- twice um: Fix for relative objtree when generating x86 headers kbuild: Use relative path when building in a subdir of the source tree kbuild: Use relative path when building in the source tree kbuild: Use relative path for $(objtree) firmware: Use $(quote) in the Makefile firmware: Simplify directory creation kbuild: trivial - fix comment block indent kbuild: trivial - remove trailing spaces kbuild: support simultaneous "make %config" and "make all" kbuild: move extra gcc checks to scripts/Makefile.extrawarn
2014-06-11Merge tag 'modules-next-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Most of this is cleaning up various driver sysfs permissions so we can re-add the perm check (we unified the module param and sysfs checks, but the module ones were stronger so we weakened them temporarily). Param parsing gets documented, and also "--" now forces args to be handed to init (and ignored by the kernel). Module NX/RO protections get tightened: we now set them before calling parse_args()" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: set nx before marking module MODULE_STATE_COMING. samples/kobject/: avoid world-writable sysfs files. drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files. drivers/staging/speakup/: avoid world-writable sysfs files. drivers/regulator/virtual: avoid world-writable sysfs files. drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files. drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files. drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files. drivers/mtd/devices/docg3.c: avoid world-writable sysfs files. speakup: fix incorrect perms on speakup_acntsa.c cpumask.h: silence warning with -Wsign-compare Documentation: Update kernel-parameters.tx param: hand arguments after -- straight to init modpost: Fix resource leak in read_dump()
2014-06-10decode_stacktrace: make stack dump output useful againSasha Levin
Right now when people try to report issues in the kernel they send stack dumps to eachother, which looks something like this: [ 6.906437] [<ffffffff811f0e90>] ? backtrace_test_irq_callback+0x20/0x20 [ 6.907121] [<ffffffff84388ce8>] dump_stack+0x52/0x7f [ 6.907640] [<ffffffff811f0ec8>] backtrace_regression_test+0x38/0x110 [ 6.908281] [<ffffffff813596a0>] ? proc_create_data+0xa0/0xd0 [ 6.908870] [<ffffffff870a8040>] ? proc_modules_init+0x22/0x22 [ 6.909480] [<ffffffff810020c2>] do_one_initcall+0xc2/0x1e0 [...] However, most of the text you get is pure garbage. The only useful thing above is the function name. Due to the amount of different kernel code versions and various configurations being used, the kernel address and the offset into the function are not really helpful in determining where the problem actually occured. Too often the result of someone looking at a stack dump is asking the person who sent it for a translation for one or more 'addr2line' translations. Which slows down the entire process of debugging the issue (and really annoying). The decode_stacktrace script is an attempt to make the output more useful and easy to work with by translating all kernel addresses in the stack dump into line numbers. Which means that the stack dump would look like this: [ 635.148361] dump_stack (lib/dump_stack.c:52) [ 635.149127] warn_slowpath_common (kernel/panic.c:418) [ 635.150214] warn_slowpath_null (kernel/panic.c:453) [ 635.151031] _oalloc_pages_slowpath+0x6a/0x7d0 [ 635.152171] ? zone_watermark_ok (mm/page_alloc.c:1728) [ 635.152988] ? get_page_from_freelist (mm/page_alloc.c:1939) [ 635.154766] __alloc_pages_nodemask (mm/page_alloc.c:2766) It's pretty obvious why this is better than the previous stack dump before. Usage is pretty simple: ./decode_stacktrace.sh [vmlinux] [base path] Where vmlinux is the vmlinux to extract line numbers from and base path is the path that points to the root of the build tree, for example: ./decode_stacktrace.sh vmlinux /home/sasha/linux/ < input.log > output.log The stack trace should be piped through it (I, for example, just pipe the output of the serial console of my KVM test box through it). Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-10scripts: objdiff: support directories for the augument of record commandMasahiro Yamada
For example, $ scripts/objdiff record init drivers/usb disassembles all the objects under init and drivers/usb directories. This feature would be useful when we change various files under the specific directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: fix a commentMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: change the extension of disassembly from .o to .disMasahiro Yamada
Prior to this commit, the command "scripts/objdiff record path/to/*.o" disassembled the given object into ".tmp_objdiff/path/to/*.o" file. The problem here is that recorded disassemblies are lost if we run "make clean" because it removes all the *.o files. Disassembled code should be dumped into *.dis instead of *.o files. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: improve path flexibility for record commandMasahiro Yamada
Prior to this commit, scripts/objdiff expected to be run at the top directory and only the relative path of objects. This commit provides more flexibility in terms of object path: [1] scripts/objdiff can be run in any directory For example, $ scripts/objdiff record init/main.o and $ cd init; ../scripts/objdiff record main.o produce the same result. [2] Support absolute path for objects $ scripts/objdiff record /home/foo/bar/linux/init/main.o work as well. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: remove unnecessary codeMasahiro Yamada
The directories for objdump is created by the code a few lines below: [ ! -d "$OBJDIFFD/$dn" ] && mkdir -p "$OBJDIFFD/$dn" Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: direct error messages to stderrMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10scripts: objdiff: get the path to .tmp_objdiff more simplyMasahiro Yamada
This commit is a minor refactoring. Temporary files for objdiff are stored in .tmp_objdiff directory which is located at the top directory. To get the path to this directory, SRCTREE=`git rev-parse --show-toplevel` TMPD=$SRCTREE/.tmp_objdiff seems easier to understand than GIT_DIR=`git rev-parse --git-dir` TMPD=${GIT_DIR%git}tmp_objdiff Besides, it is not always necessary to create .tmp_objdiff dicrectory. It should be created only for "record" command. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10deb-pkg: Add automatic support for s390x architectureBen Hutchings
The Debian s390x architecture has 64-bit userland whereas s390 has 32-bit userland. A 64-bit kernel can be used with either. Now that Debian supports multiarch and officially supports s390x, it makes more sense to assign a 64-bit kernel package to s390x. Reported-by: Stephen Powell <zlinuxman@wowway.com> References: https://bugs.debian.org/750925 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10coccicheck: Add unneeded return variable testPeter Senna Tschudin
This semantic patch looks for variables that are initialized with a constant, are never updated, and are only used as parameter of return. Return the constant instead of using a variable. Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10kbuild: trivial - use tabs for code indent where possibleMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10kbuild: create include/config directory in scripts/kconfig/MakefileMasahiro Yamada
The directory include/config is used only for silentoldconfig, localmodconfig, localyesconfig. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10kbuild: trivial - remove trailing empty linesMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-06-09coccinelle: Check for missing NULL terminators in of_device_id tablesStephen Boyd
Failure to terminate an of_device_id table can lead to confusing failures depending on where the compiler places the array. Add a check to make sure these tables are terminated. Thanks to Mitchel Humpherys for coming up with the pattern initially. Cc: Mitchel Humpherys <mitchelh@codeaurora.org> Cc: Gilles Muller <Gilles.Muller@lip6.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-09kbuild: do not add "selinux" to subdir- twiceMasahiro Yamada
scripts/Makefile adds "selinux" to subdir-y or subdir- twice. subdir-$(CONFIG_MODVERSIONS) += genksyms subdir-y += mod subdir-$(CONFIG_SECURITY_SELINUX) += selinux <--- here subdir-$(CONFIG_DTC) += dtc # Let clean descend into subdirs subdir- += basic kconfig package selinux <--- again The latter is redundant. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-09scripts/tags.sh: ignore symlink'ed source filesYann Droneaud
Since commit 22d651dcef536c75f75537290bf3da5038e68b6b ('selftests/powerpc: Import Anton's memcpy / copy_tofrom_user tests'), some source files in the tree appear as symlink. Until commit 8c38a5328af8080bc69a25b3e4e144b03eeea95e ('scripts/tags.sh: ignore code of user space tools'), those symlinks made cscope report some warnings: $ make ALLSOURCE_ARCHS=all O=./obj-cscope/ cscope GEN cscope cscope: cannot find file .../tools/testing/selftests/powerpc/copyloops/copyuser_power7.S cscope: cannot find file .../tools/testing/selftests/powerpc/copyloops/memcpy_64.S cscope: cannot find file .../tools/testing/selftests/powerpc/copyloops/memcpy_power7.S cscope: cannot find file .../tools/testing/selftests/powerpc/copyloops/copyuser_64.S In order to prevent the same kind of warnings to be triggered by future addition of symlinks, the best option is to ignore all symlinks when building the file list to be processed by cscope (and other tools supported by scripts/tags.sh). Ignoring symlinks won't hide source files from cscope (and others) as the target of these symlinks already appear somewhere else in the tree, and, as such, should be processed by cscope (or others). Note that, cscope, when used with -R option to make it find the files to process by itself, already skip symlinks: it's not expected that cscope access source files through symlink. On top of commit 8c38a5328af8080bc69a25b3e4e144b03eeea95e ('scripts/tags.sh: ignore code of user space tools'), scripts/tags.sh output from "make cscope tags TAGS" is the same with and without this patch: it doesn't seems to introduce any regression (on Fedora 20). Link: http://lkml.kernel.org/r/1396530975.4361.28.camel@localhost.localdomain Link: http://mid.gmane.org/534312F8.5090609@t-online.de Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Hans-Bernhard Bröker <broeker@users.sourceforge.net>, Cc: Hans-Bernhard Broeker <broeker@physik.rwth-aachen.de>, Cc: Neil Horman <nhorman@users.sourceforge.net> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Gerhard Sittig <gsi@denx.de> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-06Merge tag 'arm64-upstream' of ↵Linus Torvalds
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 ...
2014-06-04scripts/checkpatch.pl: device_initcall is not the only __initcall substituteFabian Frederick
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>
2014-06-04checkpatch: check stable email addressJoe Perches
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>
2014-06-04checkpatch: warn on unnecessary void function return statementsJoe Perches
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>
2014-06-04checkpatch: prefer kstrto<foo> to sscanf(buf, "%<lhuidx>", &bar);Joe Perches
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>
2014-06-04checkpatch: add warning for kmalloc/kzalloc with multiplyJoe Perches
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>
2014-06-04checkpatch: warn on #defines ending in semicolonJoe Perches
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>
2014-06-04checkpatch: make --strict a default for files in drivers/net and net/Joe Perches
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>
2014-06-04checkpatch: always warn on missing blank line after variable declaration blockJoe Perches
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>
2014-06-04checkpatch: fix wildcard DT compatible string checkingRob Herring
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>
2014-06-04Merge branch 'for-linus' of ↵Linus Torvalds
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 ...
2014-05-29ftrace: Add arm64 support to recordmcountAKASHI Takahiro
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>
2014-05-20scripts/checksyscalls.sh: Make renameat optionalJames Hogan
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
2014-05-14firmware: Simplify directory creationMichal Marek
When building the firmware blobs, use a simple loop to create directories in $(objtree), like in Makefile.build. This simplifies the rules and also makes it possible to set $(objtree) to '.' later. Before this change, a dependency on $(objtree)/<dir> would be satisfied by <dir> in $(srctree). When installing the firmware blobs, call mkdir like in Makefile.modinst. Cc: David Woodhouse <dwmw2@infradead.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-05-14scripts/tags.sh: add regular expression replacement pattern for memcgJianyu Zhan
Currently, while using ctags to read code, we would get stumbled on PageCgroup* symbols: no definition found. And it is quite dull to manually dig it out. This patch adds regular expression replacement pattern for such symbols, like what have done for the PageXXX flag. It will teach ctags to find out the definition for us. Signed-off-by: Jianyu Zhan <nasa4836@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-05-05Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linuxLinus Torvalds
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
2014-05-05modpost: Fix comment typo "Modules.symvers"Paul Bolle
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-04-30kbuild: trivial - remove trailing spacesMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-30kbuild: support simultaneous "make %config" and "make all"Masahiro Yamada
Kbuild is supposed to support mixed targets. (%config and build targets) But "make all" did nothing if it was run with configuration targets. For example, $ LANG=C make defconfig all HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o SHIPPED scripts/kconfig/zconf.tab.c SHIPPED scripts/kconfig/zconf.lex.c SHIPPED scripts/kconfig/zconf.hash.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf *** Default configuration is based on 'x86_64_defconfig' # # configuration written to .config # make: Nothing to be done for `all'. This commits allows "make %config all" and makes sure mixed targets are built one by one in the given order. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Michal Marek <mmarek@suse.cz> CC: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-28modpost: Fix resource leak in read_dump()Christian Engelmayer
Function read_dump() memory maps the input via grab_file(), but fails to call the corresponding unmap function. Add the missing call to release_file(). Detected by Coverity: CID 1192419 Signed-off-by: Christian Engelmayer <cengelma@gmx.at> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-04-24builddeb: add arm64 in the supported architecturesFathi Boudra
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-24builddeb: use $OBJCOPY variable instead of objcopyFathi Boudra
In cross-build environment, we expect to use the cross-compiler objcopy instead of the host objcopy. It fixes following build failures: objcopy --only-keep-debug lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko /srv/build/linux/debian/dbgtmp/usr/lib/debug/lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko objcopy: Unable to recognise the format of the input file `lib/modules/3.14/kernel/net/ipv6/xfrm6_mode_tunnel.ko' Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org> Cc: stable <stable@vger.kernel.org> # 3.12+ Fixes: 810e843746b7 ('deb-pkg: split debug symbols in their own package') Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-24scripts/tags.sh: ignore code of user space toolsKonstantin Khlebnikov
User space code in tools/ often reuses names of kernel constructions, this confuses navigation in the normal kernel code. Let's fix this mess. Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-16kbuild: move extra gcc checks to scripts/Makefile.extrawarnMasahiro Yamada
W=... provides extra gcc checks. Having such code in scripts/Makefile.build results in the same flags being added to KBUILD_CFLAGS multiple times becuase scripts/Makefile.build is invoked every time Kbuild descends into the subdirectories. Since the top Makefile is already too cluttered, this commit moves all of extra gcc check stuff to a new file scripts/Makefile.extrawarn, which is included from the top Makefile. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> CC: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-04-16scripts/tags.sh: add pattern for DEFINE_HASHTABLEJianyu Zhan
Signed-off-by: Jianyu Zhan <nasa4836@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
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