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2017-07-28Merge tag 'devicetree-fixes-for-4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: "Two small DT fixes: - Fix error handling in of_irq_to_resource_table() due to of_irq_to_resource() error return changes. - Fix dtx_diff script due to dts include path changes" * tag 'devicetree-fixes-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: irq: fix of_irq_to_resource() error check scripts/dtc: dtx_diff - update include dts paths to match build
2017-07-26x86/unwind: Add the ORC unwinderJosh Poimboeuf
Add the new ORC unwinder which is enabled by CONFIG_ORC_UNWINDER=y. It plugs into the existing x86 unwinder framework. It relies on objtool to generate the needed .orc_unwind and .orc_unwind_ip sections. For more details on why ORC is used instead of DWARF, see Documentation/x86/orc-unwinder.txt - but the short version is that it's a simplified, fundamentally more robust debugninfo data structure, which also allows up to two orders of magnitude faster lookups than the DWARF unwinder - which matters to profiling workloads like perf. Thanks to Andy Lutomirski for the performance improvement ideas: splitting the ORC unwind table into two parallel arrays and creating a fast lookup table to search a subset of the unwind table. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/0a6cbfb40f8da99b7a45a1a8302dc6aef16ec812.1500938583.git.jpoimboe@redhat.com [ Extended the changelog. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-25modpost: abort if module name is too longWanlong Gao
Module name has a limited length, but currently the build system allows the build finishing even if the module name is too long. CC /root/kprobe_example/abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz.mod.o /root/kprobe_example/abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz.mod.c:9:2: warning: initializer-string for array of chars is too long [enabled by default] .name = KBUILD_MODNAME, ^ but it's merely a warning. This patch adds the check of the module name length in modpost and stops the build properly. Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-07-25objtool: Fix gcov check for older versions of GCCJosh Poimboeuf
Objtool tries to silence 'unreachable instruction' warnings when it detects gcov is enabled, because gcov produces a lot of unreachable instructions and they don't really matter. However, the 0-day bot is still reporting some unreachable instruction warnings with CONFIG_GCOV_KERNEL=y on GCC 4.6.4. As it turns out, objtool's gcov detection doesn't work with older versions of GCC because they don't create a bunch of symbols with the 'gcov.' prefix like newer versions of GCC do. Move the gcov check out of objtool and instead just create a new '--no-unreachable' flag which can be passed in by the kernel Makefile when CONFIG_GCOV_KERNEL is defined. Also rename the 'nofp' variable to 'no_fp' for consistency with the new 'no_unreachable' variable. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 9cfffb116887 ("objtool: Skip all "unreachable instruction" warnings for gcov kernels") Link: http://lkml.kernel.org/r/c243dc78eb2ffdabb6e927844dea39b6033cd395.1500939244.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-23Properly alphabetize MAINTAINERS fileLinus Torvalds
This adds a perl script to actually parse the MAINTAINERS file, clean up some whitespace in it, warn about errors in it, and then properly sort the end result. My perl-fu is atrocious, so the script has basically been created by randomly putting various characters in a pile, mixing them around, and then looking it the end result does anything interesting when used as a perl script. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-23sphinx-pre-install: add support for MageiaMauro Carvalho Chehab
Add support for detecting and installing missing packages on Mageia. I opted to use "urpmi" at the install instructions, as this is present on Mageia since ever. Yet, if I were using Mageia 6, I would likely be using "dnf", as it is, IMHO, easier to use. Tested with Mageia 6. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23sphinx-pre-install: fix USE needs for GraphViz and ImageMagickMauro Carvalho Chehab
Gentoo need some USE for GraphViz and ImageMagick to have the features required by kfigure.py. Output that when providing instructions for Gentoo. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23sphinx-pre-install: add dependencies for ImageMagick to work with svgMauro Carvalho Chehab
ImageMagick actually uses librsvg for conversions when converiting from SVG (actually, it uses rsvg-convert). That causes the build to fail with: WARNING: Error #1 when calling: /usr/bin/convert /home/mchehab/docs/Documentation/media/uapi/v4l/selection.svg /home/mchehab/docs/Documentation/output/latex/selection.pdf convert: delegate failed `'rsvg-convert' -o '%o' '%i'' @ error/delegate.c/InvokeDelegate/1919. convert: unable to open file `/tmp/magick-8883oOQfHzrA5trM': No such file or directory @ error/constitute.c/ReadImage/544. Add the corresponding dependencies. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23sphinx-pre-install: check for the need of graphviz-gdMauro Carvalho Chehab
On newer versions of graphviz packaging on Fedora, it is needed to install a separate package for PDF support. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23sphinx-pre-install: use a requirements fileMauro Carvalho Chehab
Instead of using 3 commands to install a virtualenv, use a single one, reading the requirements from this file: Documentation/sphinx/requirements.txt Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23sphinx-pre-install: detect an existing virtualenvMauro Carvalho Chehab
Detect if the script runs after creating the virtualenv, printing the command line commands to enable the virtualenv. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23scripts/sphinx-pre-install: add a script to check Sphinx installMauro Carvalho Chehab
Solving Sphinx dependencies can be painful. Add a script to check if everything is ok. Tested on: - Fedora 25 and 26; - Ubuntu 17.04; - OpenSuse Tumbleweed; - Arch Linux; - Gentoo. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-20scripts/dtc: dtx_diff - update include dts paths to match buildFrank Rowand
Update the cpp include flags for compiling device tree dts files to match the changes made to the kernel build process in commit d5d332d3f7e8 ("devicetree: Move include prefixes from arch to separate directory"). Cc: <stable@vger.kernel.org> # 4.12 Signed-off-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-07-13Merge tag 'kbuild-v4.13-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - Move generic-y of exported headers to uapi/asm/Kbuild for complete de-coupling of UAPI - Clean up scripts/Makefile.headersinst - Fix host programs for 32 bit machine with XFS file system * tag 'kbuild-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits) kbuild: Enable Large File Support for hostprogs kbuild: remove wrapper files handling from Makefile.headersinst kbuild: split exported generic header creation into uapi-asm-generic kbuild: do not include old-kbuild-file from Makefile.headersinst xtensa: move generic-y of exported headers to uapi/asm/Kbuild unicore32: move generic-y of exported headers to uapi/asm/Kbuild tile: move generic-y of exported headers to uapi/asm/Kbuild sparc: move generic-y of exported headers to uapi/asm/Kbuild sh: move generic-y of exported headers to uapi/asm/Kbuild parisc: move generic-y of exported headers to uapi/asm/Kbuild openrisc: move generic-y of exported headers to uapi/asm/Kbuild nios2: move generic-y of exported headers to uapi/asm/Kbuild nios2: remove unneeded arch/nios2/include/(generated/)asm/signal.h microblaze: move generic-y of exported headers to uapi/asm/Kbuild metag: move generic-y of exported headers to uapi/asm/Kbuild m68k: move generic-y of exported headers to uapi/asm/Kbuild m32r: move generic-y of exported headers to uapi/asm/Kbuild ia64: remove redundant generic-y += kvm_para.h from asm/Kbuild hexagon: move generic-y of exported headers to uapi/asm/Kbuild h8300: move generic-y of exported headers to uapi/asm/Kbuild ...
2017-07-13Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge yet more updates from Andrew Morton: - various misc things - kexec updates - sysctl core updates - scripts/gdb udpates - checkpoint-restart updates - ipc updates - kernel/watchdog updates - Kees's "rough equivalent to the glibc _FORTIFY_SOURCE=1 feature" - "stackprotector: ascii armor the stack canary" - more MM bits - checkpatch updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (96 commits) writeback: rework wb_[dec|inc]_stat family of functions ARM: samsung: usb-ohci: move inline before return type video: fbdev: omap: move inline before return type video: fbdev: intelfb: move inline before return type USB: serial: safe_serial: move __inline__ before return type drivers: tty: serial: move inline before return type drivers: s390: move static and inline before return type x86/efi: move asmlinkage before return type sh: move inline before return type MIPS: SMP: move asmlinkage before return type m68k: coldfire: move inline before return type ia64: sn: pci: move inline before type ia64: move inline before return type FRV: tlbflush: move asmlinkage before return type CRIS: gpio: move inline before return type ARM: HP Jornada 7XX: move inline before return type ARM: KVM: move asmlinkage before type checkpatch: improve the STORAGE_CLASS test mm, migration: do not trigger OOM killer when migrating memory drm/i915: use __GFP_RETRY_MAYFAIL ...
2017-07-12Merge tag 'modules-for-v4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull modules updates from Jessica Yu: "Summary of modules changes for the 4.13 merge window: - Minor code cleanups - Avoid accessing mod struct prior to checking module struct version, from Kees - Fix racy atomic inc/dec logic of kmod_concurrent_max in kmod, from Luis" * tag 'modules-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: make the modinfo name const kmod: reduce atomic operations on kmod_concurrent and simplify module: use list_for_each_entry_rcu() on find_module_all() kernel/module.c: suppress warning about unused nowarn variable module: Add module name to modinfo module: Pass struct load_info into symbol checks
2017-07-12checkpatch: improve the STORAGE_CLASS testJoe Perches
Make sure static, extern, and asmlinkage appear before a specific type. e.g.: int asmlinkage foo(void) is better written asmlinkage int foo(void) Link: http://lkml.kernel.org/r/31704c96df2d5fd9df0b41165940a7a4feb16a63.1499284835.git.joe@perches.com 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>
2017-07-12scripts/gdb: lx-dmesg: use explicit encoding=utf8 errors=replaceLeonard Crestez
Use errors=replace because it is never desirable for lx-dmesg to fail on string decoding errors, not even if the log buffer is corrupt and we show incorrect info. The kernel will sometimes print utf8, for example the copyright symbol from jffs2. In order to make this work specify 'utf8' everywhere because python2 otherwise defaults to 'ascii'. In theory the second errors='replace' is not be required because everything that can be decoded as utf8 should also be encodable back to utf8. But it's better to be extra safe here. It's worth noting that this is definitely not true for encoding='ascii', unknown characters are replaced with U+FFFD REPLACEMENT CHARACTER and they fail to encode back to ascii. Link: http://lkml.kernel.org/r/acee067f3345954ed41efb77b80eebdc038619c6.1498481469.git.leonard.crestez@nxp.com Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Kieran Bingham <kieran@ksquared.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12scripts/gdb: lx-dmesg: cast log_buf to void* for addr fetchLeonard Crestez
In some cases it is possible for the str() conversion here to throw encoding errors because log_buf might not point to valid ascii. For example: (gdb) python print str(gdb.parse_and_eval("log_buf")) Traceback (most recent call last): File "<string>", line 1, in <module> UnicodeEncodeError: 'ascii' codec can't encode character u'\u0303' in position 24: ordinal not in range(128) Avoid this by explicitly casting to (void *) inside the gdb expression. Link: http://lkml.kernel.org/r/ba6f85dbb02ca980ebd0e2399b0649423399b565.1498481469.git.leonard.crestez@nxp.com Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Kieran Bingham <kieran@ksquared.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12scripts/gdb: add lx-fdtdump commandPeter Griffin
lx-fdtdump dumps the flattened device tree passed to the kernel from the bootloader to the filename specified as the command argument. If no argument is provided it defaults to fdtdump.dtb. This then allows further post processing on the machine running GDB. The fdt header is also also printed in the GDB console. For example: (gdb) lx-fdtdump fdt_magic: 0xD00DFEED fdt_totalsize: 0xC108 off_dt_struct: 0x38 off_dt_strings: 0x3804 off_mem_rsvmap: 0x28 version: 17 last_comp_version: 16 Dumped fdt to fdtdump.dtb >fdtdump fdtdump.dtb | less This command is useful as the bootloader can often re-write parts of the device tree, and this can sometimes cause the kernel to not boot. Link: http://lkml.kernel.org/r/1481280065-5336-2-git-send-email-kbingham@kernel.org Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Kieran Bingham <kbingham@kernel.org> Cc: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-11kbuild: remove wrapper files handling from Makefile.headersinstMasahiro Yamada
scripts/Makefike.headersinst creates asm-generic wrappers by itself because scripts/Makefile.asm-generic created some of exported wrappers outside uapi directories. Now this distortion has been fixed. scripts/Makefile.headersinst can simply copy wrappers created by scripts/Makefile.asm-generic. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-11kbuild: do not include old-kbuild-file from Makefile.headersinstMasahiro Yamada
Now asm-generic wrappers to be exported are all listed in arch/*/include/uapi/asm/Kbuild. "make headers_install" no longer depends on any Kbuild files outside uapi directories. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-10checkpatch: improve multi-line alignment testJoe Perches
The current test fails to warn about improper alignment with code like foo->bar = func(arg1, arg2); because foo->bar is not a single identifier. Convert the $Ident to $Lval which allows for multiple dereferences. Link: http://lkml.kernel.org/r/01c35b9b6a12a415e57746d45d589bfaad39952a.1498841563.git.joe@perches.com 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>
2017-07-10checkpatch: improve macro reuse testJoe Perches
checkpatch reports a false positive when using token pasting argument multiple times in a macro. Fix it. Miscellanea: o Make the $tmp variable name used in the macro argument tests a bit more descriptive Link: http://lkml.kernel.org/r/cf434ae7602838388c7cb49d42bca93ab88527e7.1498483044.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10checkpatch: change format of --color argument to --color[=WHEN]John Brooks
The boolean --color argument did not offer the ability to force colourized output even if stdout is not a terminal. Change the format of the argument to the familiar --color[=WHEN] construct as seen in common Linux utilities such as git, ls and dmesg, which allows the user to specify whether to colourize output "always", "never", or "auto" when the output is a terminal. The default is "auto". The old command-line uses of --color and --no-color are unchanged. Link: http://lkml.kernel.org/r/efe43bdbad400f39ba691ae663044462493b0773.1496799721.git.joe@perches.com Signed-off-by: John Brooks <john@fastquake.com> 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>
2017-07-10checkpatch: silence perl 5.26.0 unescaped left brace warningsCyril Bur
As of perl 5, version 26, subversion 0 (v5.26.0) some new warnings have occurred when running checkpatch. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3544. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3885. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(\+.*(?:do|\))){ <-- HERE / at scripts/checkpatch.pl line 4374. It seems perfectly reasonable to do as the warning suggests and simply escape the left brace in these three locations. Link: http://lkml.kernel.org/r/20170607060135.17384-1-cyrilbur@gmail.com Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10checkpatch: improve tests for multiple line function definitionsJoe Perches
Add a block that identifies multiple line function definitions. Save the function name into $context_function to improve the embedded function name test. Look for misplaced open brace on the function definition. Emit an OPEN_BRACE error when the function definition is similar to void foo(int arg1, int arg2) { Miscellanea: o Remove the $realfile test in function declaration w/o named arguments test o Comment the function declaration w/o named arguments test Link: http://lkml.kernel.org/r/de620ed6ebab75fdfa323741ada2134a0f545892.1496835238.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Tested-by: David Kershner <david.kershner@unisys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10checkpatch: remove false warning for commit referenceHeinrich Schuchardt
Checkpatch warns of an incorrect commit reference style for any hexadecimal number of 12 digits and more. Numbers of 12 digits are not necessarily commit ids. For an example provoking the problem see https://patchwork.kernel.org/patch/9170897/ Checkpatch should only warn if the number refers to an existing commit. Link: http://lkml.kernel.org/r/20170607184008.5869-1-xypron.glpk@gmx.de Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10checkpatch: fix stepping through statements with $stat and ctx_statement_blockJoe Perches
Fix the off-by-one in the suppression of lines in a statement block. This means that for multiple line statements like foo(bar, baz, qux); $stat has been inspected first correctly for the entire statement, and subsequently incorrectly just for qux); This fix will help make tracking appropriate indentation a little easier. Link: http://lkml.kernel.org/r/71b25979c90412133c717084036c9851cd2b7bcb.1496862585.git.joe@perches.com 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>
2017-07-10checkpatch: [HLP]LIST_HEAD is also declarationSteffen Maier
Fixes the following false warning among others for LLIST_HEAD and PLIST_HEAD: WARNING: Missing a blank line after declarations #71: FILE: drivers/s390/scsi/zfcp_fsf.c:422: + struct hlist_node *tmp; + HLIST_HEAD(remove_queue); Link: http://lkml.kernel.org/r/20170614133512.89425-1-maier@linux.vnet.ibm.com Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10checkpatch: warn when a MAINTAINERS entry isn't [A-Z]:\tJoe Perches
For consistency, MAINTAINERS entries should be an upper case letter, then a colon, then a tab, then the value. Warn when an entry doesn't have this form. --fix it too. Link: http://lkml.kernel.org/r/9aaaf03ec10adf3888b5e98dd2176b7fe9b5fad8.1496343345.git.joe@perches.com 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>
2017-07-10checkpatch: improve the unnecessary OOM message testJoe Perches
Use the context around a patch to avoid missing some candidates. Link: http://lkml.kernel.org/r/865e874fbae5decc331a849bd8d71c325db6bc80.1496343345.git.joe@perches.com 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>
2017-07-10kbuild: pass dst= to Makefile.headersinst from top MakefileMasahiro Yamada
We can always pass dst= from the top Makefile. This will simplify the logic in Makefile.headersinst. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-10kbuild: remove useless $(gen) variable in Makefile.headersinstMasahiro Yamada
We have no true case for the $(if $(gen), ...) conditional. Drop it to simplify the gendir calculation. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-07Merge tag 'kbuild-thinar-v4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild thin archives updates from Masahiro Yamada: "Thin archives migration by Nicholas Piggin. THIN_ARCHIVES has been available for a while as an optional feature only for PowerPC architecture, but we do not need two different intermediate-artifact schemes. Using thin archives instead of conventional incremental linking has various advantages: - save disk space for builds - speed-up building a little - fix some link issues (for example, allyesconfig on ARM) due to more flexibility for the final linking - work better with dead code elimination we are planning As discussed before, this migration has been done unconditionally so that any problems caused by this will show up with "git bisect". With testing with 0-day and linux-next, some architectures actually showed up problems, but they were trivial and all fixed now" * tag 'kbuild-thinar-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: tile: remove unneeded extra-y in Makefile kbuild: thin archives make default for all archs x86/um: thin archives build fix tile: thin archives fix linking ia64: thin archives fix linking sh: thin archives fix linking kbuild: handle libs-y archives separately from built-in.o archives kbuild: thin archives use P option to ar kbuild: thin archives final link close --whole-archives option ia64: remove unneeded extra-y in Makefile.gate tile: fix dependency and .*.cmd inclusion for incremental build sparc64: Use indirect calls in hamming weight stubs
2017-07-07Merge tag 'kbuild-misc-v4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull misc Kbuild updates from Masahiro Yamada: - Use more portable shebang for Perl scripts - Remove trailing spaces from GCC version in kernel log - Make initramfs generation deterministic * tag 'kbuild-misc-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: create deterministic initramfs directory listings scripts/mkcompile_h: Remove trailing spaces from compiler version scripts: Switch to more portable Perl shebang
2017-07-07Merge tag 'kbuild-v4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Clean up Makefiles and scripts - Improve clang support - Remove unneeded genhdr-y syntax - Remove unneeded cc-option-align macro - Introduce __cc-option macro and use it to fix x86 boot code compiler flags * tag 'kbuild-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: improve comments on KBUILD_SRC x86/build: Specify stack alignment for clang x86/build: Use __cc-option for boot code compiler options kbuild: Add __cc-option macro kbuild: remove cc-option-align kbuild: replace genhdr-y with generated-y kbuild: clang: Disable 'address-of-packed-member' warning kbuild: remove duplicated arch/*/include/generated/uapi include path kbuild: speed up checksyscalls.sh kbuild: simplify silent build (-s) detection
2017-07-07Merge tag 'devicetree-for-4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - vsprintf format specifier %pOF for device_node's. This will enable us to stop storing the full node names. Conversion of users will happen next cycle. - Update documentation to point to DT specification instead of ePAPR. - Split out graph and property functions to a separate file. - New of-graph functions for ALSA - Add vendor prefixes for RISC-V, Linksys, iWave Systems, Roofull, Itead, and BananaPi. - Improve dtx_diff utility filename printing. * tag 'devicetree-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (32 commits) of: document /sys/firmware/fdt dt-bindings: Add RISC-V vendor prefix vsprintf: Add %p extension "%pOF" for device tree of: find_node_by_full_name rewrite to compare each level of: use kbasename instead of open coding dt-bindings: thermal: add file extension to brcm,ns-thermal of: update ePAPR references to point to Devicetree Specification scripts/dtc: dtx_diff - Show real file names in diff header of: detect invalid phandle in overlay of: be consistent in form of file mode of: make __of_attach_node() static of: address.c header comment typo of: fdt.c header comment typo of: make of_fdt_is_compatible() static dt-bindings: display-timing.txt convert non-ascii characters to ascii Documentation: remove overlay-notes reference to non-existent file dt-bindings: usb: exynos-usb: Add missing required VDD properties dt-bindings: Add vendor prefix for Linksys MAINTAINERS: add device tree ABI documentation file of: Add vendor prefix for iWave Systems Technologies Pvt. Ltd ...
2017-07-06scripts/spelling.txt: add a bunch more spelling mistakesColin Ian King
Here are some of the more spelling mistakes and typos that I've found while fixing up spelling mistakes in kernel error message text over the past several weeks. Link: http://lkml.kernel.org/r/20170621142614.12529-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Joe Perches <joe@perches.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-06scripts/gen_initramfs_list.sh: teach INITRAMFS_ROOT_UID and ↵Rob Landley
INITRAMFS_ROOT_GID that -1 means "current user". Teach INITRAMFS_ROOT_UID and INITRAMFS_ROOT_GID that -1 means "current user". Link: http://lkml.kernel.org/r/2df3a9fb-4378-fa16-679d-99e788926c05@landley.net Signed-off-by: Rob Landley <rob@landley.net> Cc: Michal Marek <mmarek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-05Merge tag 'gcc-plugins-v4.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull GCC plugin updates from Kees Cook: "The big part is the randstruct plugin infrastructure. This is the first of two expected pull requests for randstruct since there are dependencies in other trees that would be easier to merge once those have landed. Notably, the IPC allocation refactoring in -mm, and many trivial merge conflicts across several trees when applying the __randomize_layout annotation. As a result, it seemed like I should send this now since it is relatively self-contained, and once the rest of the trees have landed, send the annotation patches. I'm expecting the final phase of randstruct (automatic struct selection) will land for v4.14, but if its other tree dependencies actually make it for v4.13, I can send that merge request too. Summary: - typo fix in Kconfig (Jean Delvare) - randstruct infrastructure" * tag 'gcc-plugins-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: ARM: Prepare for randomized task_struct randstruct: Whitelist NIU struct page overloading randstruct: Whitelist big_key path struct overloading randstruct: Whitelist UNIXCB cast randstruct: Whitelist struct security_hook_heads cast gcc-plugins: Add the randstruct plugin Fix English in description of GCC_PLUGIN_STRUCTLEAK compiler: Add __designated_init annotation gcc-plugins: Detail c-common.h location for GCC 4.6
2017-07-04Merge branch 'merge/randstruct' into for-next/gcc-pluginsKees Cook
2017-07-03Merge tag 'docs-4.13' of git://git.lwn.net/linuxLinus Torvalds
Pull documentation updates from Jonathan Corbet: "There has been a fair amount of activity in the docs tree this time around. Highlights include: - Conversion of a bunch of security documentation into RST - The conversion of the remaining DocBook templates by The Amazing Mauro Machine. We can now drop the entire DocBook build chain. - The usual collection of fixes and minor updates" * tag 'docs-4.13' of git://git.lwn.net/linux: (90 commits) scripts/kernel-doc: handle DECLARE_HASHTABLE Documentation: atomic_ops.txt is core-api/atomic_ops.rst Docs: clean up some DocBook loose ends Make the main documentation title less Geocities Docs: Use kernel-figure in vidioc-g-selection.rst Docs: fix table problems in ras.rst Docs: Fix breakage with Sphinx 1.5 and upper Docs: Include the Latex "ifthen" package doc/kokr/howto: Only send regression fixes after -rc1 docs-rst: fix broken links to dynamic-debug-howto in kernel-parameters doc: Document suitability of IBM Verse for kernel development Doc: fix a markup error in coding-style.rst docs: driver-api: i2c: remove some outdated information Documentation: DMA API: fix a typo in a function name Docs: Insert missing space to separate link from text doc/ko_KR/memory-barriers: Update control-dependencies example Documentation, kbuild: fix typo "minimun" -> "minimum" docs: Fix some formatting issues in request-key.rst doc: ReSTify keys-trusted-encrypted.txt doc: ReSTify keys-request-key.txt ...
2017-07-03Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: "The sole purpose of these changes is to shrink and simplify the RCU code base, which has suffered from creeping bloat over the past couple of years. The end result is a net removal of ~2700 lines of code: 79 files changed, 1496 insertions(+), 4211 deletions(-) Plus there's a marked reduction in the Kconfig space complexity as well, here's the number of matches on 'grep RCU' in the .config: before after x86-defconfig 17 15 x86-allmodconfig 33 20" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (86 commits) rcu: Remove RCU CPU stall warnings from Tiny RCU rcu: Remove event tracing from Tiny RCU rcu: Move RCU debug Kconfig options to kernel/rcu rcu: Move RCU non-debug Kconfig options to kernel/rcu rcu: Eliminate NOCBs CPU-state Kconfig options rcu: Remove debugfs tracing srcu: Remove Classic SRCU srcu: Fix rcutorture-statistics typo rcu: Remove SPARSE_RCU_POINTER Kconfig option rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option rcu: Remove typecheck() from RCU locking wrapper functions rcu: Remove #ifdef moving rcu_end_inkernel_boot from rcupdate.h rcu: Remove nohz_full full-system-idle state machine rcu: Remove the RCU_KTHREAD_PRIO Kconfig option rcu: Remove *_SLOW_* Kconfig options srcu: Use rnp->lock wrappers to replace explicit memory barriers rcu: Move rnp->lock wrappers for SRCU use rcu: Convert rnp->lock wrappers to macros for SRCU use rcu: Refactor #includes from include/linux/rcupdate.h bcm47xx: Fix build regression ...
2017-07-03scripts/kernel-doc: handle DECLARE_HASHTABLEJakub Kicinski
DECLARE_HASHTABLE needs similar handling to DECLARE_BITMAP because otherwise kernel-doc assumes the member name is the second, not first macro parameter. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-03kbuild: create deterministic initramfs directory listingsBjørn Forsman
kbuild runs "find" on each entry in CONFIG_INITRAMFS_SOURCE that is a directory. The order of the file listing output by "find" matter for build reproducability, hence this patch applies "sort" to get deterministic results. Without this patch, two different machines with identical initramfs directory input may produce differing initramfs cpio archives (different hash) due to the different order of the files within the archive. Signed-off-by: Bjørn Forsman <bjorn.forsman@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-30kbuild: handle libs-y archives separately from built-in.o archivesNicholas Piggin
The thin archives build currently puts all lib.a and built-in.o files together and links them with --whole-archive. This works because thin archives can recursively refer to thin archives. However some architectures include libgcc.a, which may not be a thin archive, or it may not be constructed with the "P" option, in which case its contents do not get linked correctly. So don't pull .a libs into the root built-in.o archive. These libs should already have symbol tables and indexes built, so they can be direct linker inputs. Move them out of the --whole-archive option, which restore the conditional linking behaviour of lib.a to thin archives builds. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-30kbuild: thin archives use P option to arNicholas Piggin
The P option makes ar do full path name matching and can prevent ar from discarding files with duplicate names in some cases of creating thin archives from thin archives. The sh architecture in particular loses some object files from its kernel/cpu/sh*/ directories without this option. This could be a bug in binutils ar, but the P option should not cause any negative effects so it is safe to use to work around this with. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-30kbuild: thin archives final link close --whole-archives optionNicholas Piggin
Close the --whole-archives option with --no-whole-archive. Some architectures end up including additional .o and files multiple times after this, and they get duplicate symbols when they are brought under the --whole-archives option. This matches more closely with the incremental final link. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-27vsprintf: Add %p extension "%pOF" for device treePantelis Antoniou
90% of the usage of device node's full_name is printing it out in a kernel message. However, storing the full path for every node is wasteful and redundant. With a custom format specifier, we can generate the full path at run-time and eventually remove the full path from every node. For instance typical use is: pr_info("Frobbing node %s\n", node->full_name); Which can be written now as: pr_info("Frobbing node %pOF\n", node); '%pO' is the base specifier to represent kobjects with '%pOF' representing struct device_node. Currently, struct device_node is the only supported type of kobject. More fine-grained control of formatting includes printing the name, flags, path-spec name and others, explained in the documentation entry. Originally written by Pantelis, but pretty much rewrote the core function using existing string/number functions. The 2 passes were unnecessary and have been removed. Also, updated the checkpatch.pl check. The unittest code was written by Grant Likely. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Rob Herring <robh@kernel.org>
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