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2016-12-12Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge updates from Andrew Morton: - various misc bits - most of MM (quite a lot of MM material is awaiting the merge of linux-next dependencies) - kasan - printk updates - procfs updates - MAINTAINERS - /lib updates - checkpatch updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (123 commits) init: reduce rootwait polling interval time to 5ms binfmt_elf: use vmalloc() for allocation of vma_filesz checkpatch: don't emit unified-diff error for rename-only patches checkpatch: don't check c99 types like uint8_t under tools checkpatch: avoid multiple line dereferences checkpatch: don't check .pl files, improve absolute path commit log test scripts/checkpatch.pl: fix spelling checkpatch: don't try to get maintained status when --no-tree is given lib/ida: document locking requirements a bit better lib/rbtree.c: fix typo in comment of ____rb_erase_color lib/Kconfig.debug: make CONFIG_STRICT_DEVMEM depend on CONFIG_DEVMEM MAINTAINERS: add drm and drm/i915 irc channels MAINTAINERS: add "C:" for URI for chat where developers hang out MAINTAINERS: add drm and drm/i915 bug filing info MAINTAINERS: add "B:" for URI where to file bugs get_maintainer: look for arbitrary letter prefixes in sections printk: add Kconfig option to set default console loglevel printk/sound: handle more message headers printk/btrfs: handle more message headers printk/kdb: handle more message headers ...
2016-12-12treewide: Make remaining source files non-executableJoe Perches
.c and .h source files should not be executable, change the permissions to 0644. [ This would normally go through Andrew Morton, but his ancient patch-based toolchain doesn't do permission changes ] Signed-off-by: Joe Perches <joe@perches.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12Merge branch 'timers-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "The time/timekeeping/timer folks deliver with this update: - Fix a reintroduced signed/unsigned issue and cleanup the whole signed/unsigned mess in the timekeeping core so this wont happen accidentaly again. - Add a new trace clock based on boot time - Prevent injection of random sleep times when PM tracing abuses the RTC for storage - Make posix timers configurable for real tiny systems - Add tracepoints for the alarm timer subsystem so timer based suspend wakeups can be instrumented - The usual pile of fixes and updates to core and drivers" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) timekeeping: Use mul_u64_u32_shr() instead of open coding it timekeeping: Get rid of pointless typecasts timekeeping: Make the conversion call chain consistently unsigned timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion alarmtimer: Add tracepoints for alarm timers trace: Update documentation for mono, mono_raw and boot clock trace: Add an option for boot clock as trace clock timekeeping: Add a fast and NMI safe boot clock timekeeping/clocksource_cyc2ns: Document intended range limitation timekeeping: Ignore the bogus sleep time if pm_trace is enabled selftests/timers: Fix spelling mistake "Asyncrhonous" -> "Asynchronous" clocksource/drivers/bcm2835_timer: Unmap region obtained by of_iomap clocksource/drivers/arm_arch_timer: Map frame with of_io_request_and_map() arm64: dts: rockchip: Arch counter doesn't tick in system suspend clocksource/drivers/arm_arch_timer: Don't assume clock runs in suspend posix-timers: Make them configurable posix_cpu_timers: Move the add_device_randomness() call to a proper place timer: Move sys_alarm from timer.c to itimer.c ptp_clock: Allow for it to be optional Kconfig: Regenerate *.c_shipped files after previous changes ...
2016-12-12checkpatch: don't emit unified-diff error for rename-only patchesAndrew Jeffery
I generated a patch with `git format-patch` which checkpatch thinks is invalid: $ ./scripts/checkpatch.pl lpc-dt/0006-mfd-dt-Move-syscon-bindings-to-syscon-subdirectory.patch WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? Documentation/devicetree/bindings/mfd/{ => syscon}/aspeed-scu.txt | 0 ERROR: Does not appear to be a unified-diff format patch total: 1 errors, 1 warnings, 0 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. lpc-dt/0006-mfd-dt-Move-syscon-bindings-to-syscon-subdirectory.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. The patch in question was all renames with no edits, giving 100% similarity and thus no diff markers. Set '$is_patch = 1;' in the add/remove/rename detection to avoid generating spurious warnings. Link: http://lkml.kernel.org/r/20161205232224.22685-1-andrew@aj.id.au Signed-off-by: Andrew Jeffery <andrew@aj.id.au> 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>
2016-12-12checkpatch: don't check c99 types like uint8_t under toolsTomas Winkler
Tools contains user space code so uintX_t types are just fine. Link: http://lkml.kernel.org/r/1479286379-853-1-git-send-email-tomas.winkler@intel.com Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Acked-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>
2016-12-12checkpatch: avoid multiple line dereferencesJoe Perches
Code that puts a single dereferencing identifier on multiple lines like: struct_identifier->member[index]. member = <foo>; is generally hard to follow. Prefer that dereferencing identifiers be single line. Link: http://lkml.kernel.org/r/e9c191ae3f41bedc8ffd5c0fbcc5a1cec1d1d2df.1478120869.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>
2016-12-12checkpatch: don't check .pl files, improve absolute path commit log testJoe Perches
perl files (*.pl) are mostly inappropriate to check coding styles so exempt them from long line checks and various .[ch] file type tests. And as well, only scan absolute paths in the commit log, not in the patch. Link: http://lkml.kernel.org/r/85b101d50acafe6c0261d9f7df283c827da52c4a.1477340110.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12scripts/checkpatch.pl: fix spellingAndrew Morton
s/preceeded/preceded/ Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12checkpatch: don't try to get maintained status when --no-tree is givenJerome Forissier
Fixes the following warning: Use of uninitialized value $root in concatenation (.) or string at /path/to/checkpatch.pl line 764. Link: http://lkml.kernel.org/r/1476719709-16668-1-git-send-email-jerome.forissier@linaro.org Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Reviewed-by: Brian Norris <computersforpeace@gmail.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>
2016-12-12get_maintainer: look for arbitrary letter prefixes in sectionsJoe Perches
Jani Nikula proposes patches to add a few new letter prefixes for "B:" bug reporting and "C:" maintainer chatting to the various sections of MAINTAINERS. Add a generic mechanism to get_maintainer.pl to find sections that have any combination of "[A-Z]" letter prefix types in a section. Link: http://lkml.kernel.org/r/1477332323.1984.8.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Dave Airlie <airlied@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12kasan: turn on -fsanitize-address-use-after-scopeAndrey Ryabinin
In the upcoming gcc7 release, the -fsanitize=kernel-address option at first implied new -fsanitize-address-use-after-scope option. This would cause link errors on older kernels because they don't have two new functions required for use-after-scope support. Therefore, gcc7 changed default to -fno-sanitize-address-use-after-scope. Now the kernel has everything required for that feature since commit 828347f8f9a5 ("kasan: support use-after-scope detection"). So, to make it work, we just have to enable use-after-scope in CFLAGS. Link: http://lkml.kernel.org/r/1481207977-28654-1-git-send-email-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12scripts/tags.sh: handle OMAP platforms properlySam Protsenko
When SUBARCH is "omap1" or "omap2", plat-omap/ directory must be indexed. Handle this special case properly. While at it, check if mach- directory exists at all. Link: http://lkml.kernel.org/r/20161202122148.15001-1-joe.skb7@gmail.com Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Cc: Michal Marek <mmarek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12scripts/bloat-o-meter: compile .NUMBER regexAlexey Dobriyan
Every often used regex is better be compiled in Python. Speedup is about ~9.8% (whee!) $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null 7.091202853 seconds time elapsed ( +- 0.15% ) +re.compile 6.397564973 seconds time elapsed ( +- 0.34% ) Link: http://lkml.kernel.org/r/20161119004417.GB1200@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12scripts/bloat-o-meter: don't use readlines()Alexey Dobriyan
readlines() conses whole list before doing anything which is slower for big object files. Use per line iterator. Speed up is ~2% on "allyesconfig" type of kernel. $ perf stat -r 16 taskset -c 15 ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux >/dev/null ... Before: 7.247708646 seconds time elapsed ( +- 0.28% ) After: 7.091202853 seconds time elapsed ( +- 0.15% ) Link: http://lkml.kernel.org/r/20161119004143.GA1200@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12Merge branch 'x86-asm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm updates from Ingo Molnar: "The main changes in this development cycle were: - a large number of call stack dumping/printing improvements: higher robustness, better cross-context dumping, improved output, etc. (Josh Poimboeuf) - vDSO getcpu() performance improvement for future Intel CPUs with the RDPID instruction (Andy Lutomirski) - add two new Intel AVX512 features and the CPUID support infrastructure for it: AVX512IFMA and AVX512VBMI. (Gayatri Kammela, He Chen) - more copy-user unification (Borislav Petkov) - entry code assembly macro simplifications (Alexander Kuleshov) - vDSO C/R support improvements (Dmitry Safonov) - misc fixes and cleanups (Borislav Petkov, Paul Bolle)" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) scripts/decode_stacktrace.sh: Fix address line detection on x86 x86/boot/64: Use defines for page size x86/dumpstack: Make stack name tags more comprehensible selftests/x86: Add test_vdso to test getcpu() x86/vdso: Use RDPID in preference to LSL when available x86/dumpstack: Handle NULL stack pointer in show_trace_log_lvl() x86/cpufeatures: Enable new AVX512 cpu features x86/cpuid: Provide get_scattered_cpuid_leaf() x86/cpuid: Cleanup cpuid_regs definitions x86/copy_user: Unify the code by removing the 64-bit asm _copy_*_user() variants x86/unwind: Ensure stack grows down x86/vdso: Set vDSO pointer only after success x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE x86/unwind: Detect bad stack return address x86/dumpstack: Warn on stack recursion x86/unwind: Warn on bad frame pointer x86/decoder: Use stderr if insn sanity test fails x86/decoder: Use stdout if insn decoder test is successful mm/page_alloc: Remove kernel address exposure in free_reserved_area() x86/dumpstack: Remove raw stack dump ...
2016-12-11kbuild: fix scripts/adjust_autoksyms.sh* for the no modules caseNicolas Pitre
When CONFIG_TRIM_UNUSED_KSYMS=y and no modules are actually selected, the adjust_autoksyms.sh script fails with: sed: can't read .tmp_versions/*.mod: No such file or directory Let's cope with that case gracefully. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11xconfig: fix missing suboption and help panels on first runBoris Barbulovski
qconfig initial slider sizes fix. On first `make xconfig`, suboption and help panels were hidden. Now we properly detect the first run, and show those panels. Reported-by: Jason Vas Dias <jason.vas.dias@gmail.com> Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11xconfig: fix 'Show Debug' functionalityBoris Barbulovski
xconfig - Fix missing 'Show Debug' functionality. xconfig Help mentions 'Show Debug Info' but it was missing from any menu. * Add 'Show debug' menu to the main menu. * Properly load showDebug settings. Reported-by: Jason Vas Dias <jason.vas.dias@gmail.com> Signed-off-by: Boris Barbulovski <bbarbulovski@gmail.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11Merge branch 'kbuild/rc-fixes' into kbuild/miscMichal Marek
2016-12-11Merge branch 'linus' into locking/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-12-11scripts/kallsyms: remove last remnants of --page-offset optionArd Biesheuvel
The implementation of the --page-offset kallsyms command line option has been removed, so remove it from the usage string as well. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11kconfig/nconf: Fix hang when editing symbol with a long promptBen Hutchings
Currently it is impossible to edit the value of a config symbol with a prompt longer than (terminal width - 2) characters. dialog_inputbox() calculates a negative x-offset for the input window and newwin() fails as this is invalid. It also doesn't check for this failure, so it busy-loops calling wgetch(NULL) which immediately returns -1. The additions in the offset calculations also don't match the intended size of the window. Limit the window size and calculate the offset similarly to show_scroll_win(). Cc: stable <stable@vger.kernel.org> Fixes: 692d97c380c6 ("kconfig: new configuration interface (nconfig)") Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
2016-12-11Coccinelle: misc: Add support for devm variant in all modesVaishali Thakkar
Add missing support for the devm_request_threaded_irq in the rules of context, report and org modes. Misc: ---- To be consistent with other scripts, change confidence level of the script to 'Moderate'. Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11Coccinelle: misc: Improve the result given by context modeVaishali Thakkar
To eliminate false positives given by the context mode, add necessary arguments for the function request_threaded_irq. Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11Coccinelle: misc: Improve the matching of rulesVaishali Thakkar
Currently because of the left associativity of the operators, pattern IRQF_ONESHOT | flags does not match with the pattern when we have more than one flag after the disjunction. This eventually results in giving false positives by the script. This patch eliminates these FPs by improving the rule. Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11kbuild/mkspec: avoid using brace expansionAnton Tikhomirov
Brace expansion might not work properly if _buildshell RPM macro points to a shell other than bash. Particularly, with _bulidshell defined to /bin/dash it leads to broken build and source symlinks. Signed-off-by: Anton Tikhomirov <anton.tikhomirov@cdnetworks.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11Coccinelle: Add misc/boolconv.cocciAndrew F. Davis
Add a script to check for unneeded conversions to bool. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11kbuild: cmd_export_list: tighten the sed scriptNicolas Pitre
When LTO is used, some ___ksymtab_string sections are seen by this sed script, creating lines containing a single ) such as: EXPORT(foo) ) ) EXPORT(bar) Let's make it so the + character is also required for any line to be printed. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-05scripts: add a script to check if Documentation/00-INDEX is saneMauro Carvalho Chehab
It is easy to forget adding/removing entries at the Documentation/00-INDEX file. In a matter of fact, even before ReST conversion, people use to forget adding things here, as there are lots of missing stuff out there. Now that we're doing a hard work converting entries to ReST, and while this hole file is not outdated, it is good to have some tool that would help to verify that this file is kept updated. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-01kbuild: make sure autoksyms.h exists earlyNicolas Pitre
Some people are able to trigger a race where autoksyms.h is used before its empty version is even created. Let's create it at the same time as the directory holding it is created. Signed-off-by: Nicolas Pitre <nico@linaro.org> Tested-by: Prarit Bhargava <prarit@redhat.com> Tested-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-29kbuild: minor improvement for thin archives buildNicholas Piggin
The root built-in.o archive is currently generated before all object files are built for the final link, due to final build of init/ after version update. In practice it seems like it doesn't matter because the archive symbol table does not change, but it is more logical to create the final archive as the last step. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild: modpost warn if export version crc is missingNicholas Piggin
This catches the failing ceph CRC on with: LD vmlinux.o MODPOST vmlinux.o WARNING: EXPORT symbol "ceph_monc_do_statfs" [vmlinux] version generation failed, symbol will not be versioned. When the modules referring to exported symbols are built, there is an existing warning for missing CRC, but it's not always the case such any such module will be built, and in any case it is useful to get a warning at the source. This gets a little verbose with CONFIG_DEBUG_SECTION_MISMATCH, producing a warning with each object linked, but I didn't think that warranted extra complexity to avoid. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild: improve linker compatibility with lib-ksyms.o buildNicholas Piggin
lib-ksyms.o is created by linking an empty input file with a linker script containing the interesting bits. Currently the empty input file is an archive containing nothing, however this causes the gold linker to segfault. I have opened a bug against gold https://sourceware.org/bugzilla/show_bug.cgi?id=20767 However this can be worked around by assembling an empty file to link with instead. The resulting lib-ksyms.o is slightly larger (seemingly due to empty .text, .data, .bss setions added), but final linked output should not be changed. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29genksyms: Regenerate parserMichal Marek
Regenerate the keyword table and parser after commit 0efdb2282343 ("kbuild/genksyms: handle va_list type"). Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild/genksyms: handle va_list typeNicholas Piggin
genksyms currently does not handle va_list. Add the __builtin_va_list keyword as a type. This reduces the amount of syntax errors thrown, but so far no export symbol has a type with a va_list argument, so there is currently no bug in the end result. Note: this patch does not regenerate shipped parser files. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild: thin archives for multi-y targetsNicholas Piggin
THIN_ARCHIVES builds archives for built-in.o targets, have it build multi-y targets as archives as well. This saves another ~15% of the size of intermediate artifacts in the build tree. After this patch, the linker is only used in final link, and special cases like vdsos. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29kbuild: kallsyms allow 3-pass generation if symbols size has changedNicholas Piggin
kallsyms generation is not foolproof, due to some linkers adding symbols (e.g., branch trampolines) when a binary size changes. Have it attempt a 3rd pass automatically if the kallsyms size changes in the 2nd pass. This allows powerpc64 allyesconfig to build without adding another pass when it's not required. This can be solved other ways by directing the linker not to add labels on branch stubs, or to move kallsyms near the end of the image. The former is undesirable for debugging/tracing, and the latter is a more significant change that requires more testing and review. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-29scripts/decode_stacktrace.sh: Fix address line detection on x86Josh Poimboeuf
Kirill reported that the decode_stacktrace.sh script was broken by the following commit: bb5e5ce545f2 ("x86/dumpstack: Remove kernel text addresses from stack dump") Fix it by updating the per-line absolute address check to also check for function-based address lines like the following: write_sysrq_trigger+0x51/0x60 I didn't remove the check for absolute addresses because it's still needed for ARM. Reported-by: Kirill A. Shutemov <kirill@shutemov.name> Tested-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <alexander.levin@verizon.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: bb5e5ce545f2 ("x86/dumpstack: Remove kernel text addresses from stack dump") Link: http://lkml.kernel.org/r/20161128230635.4n2ofgawltgexgcg@treble Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-29Scripts: kconfig: nconf: fix _GNU_SOURCE redefined warningCheah Kok Cheong
Fix below warning when make nconfig is run initially or after make clean. HOSTCC scripts/kconfig/nconf.o scripts/kconfig/nconf.c:8:0: warning: "_GNU_SOURCE" redefined #define _GNU_SOURCE ^ <command-line>:0:0: note: this is the location of the previous definition Signed-off-by: Cheah Kok Cheong <thrust73@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-26modpost: free allocated memoryHeinrich Schuchardt
valgrind complains that memory is not freed after allocation with realloc() called from main() and write_dump(). So let us free the allocated memory properly. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Link: http://lkml.kernel.org/r/1470166981-6461-1-git-send-email-xypron.glpk@gmx.de Signed-off-by: Jessica Yu <jeyu@redhat.com>
2016-11-25builddeb: fix cross-building to arm64 producing host-arch debsAdam Borowski
Both Debian and kernel archs are "arm64" but UTS_MACHINE and gcc say "aarch64". Recognizing just the latter should be enough but let's accept both in case something regresses again or an user sets UTS_MACHINE=arm64. Regressed in cfa88c7: arm64: Set UTS_MACHINE in the Makefile. Signed-off-by: Adam Borowski <kilobyte@angband.pl> Acked-by: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-11-22Merge branch 'linus' into locking/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-18Merge branch 'rc-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild fixes from Michal Marek: "Here are some regression fixes for kbuild: - modversion support for exported asm symbols (Nick Piggin). The affected architectures need separate patches adding asm-prototypes.h. - fix rebuilds of lib-ksyms.o (Nick Piggin) - -fno-PIE builds (Sebastian Siewior and Borislav Petkov). This is not a kernel regression, but one of the Debian gcc package. Nevertheless, it's quite annoying, so I think it should go into mainline and stable now" * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Steal gcc's pie from the very beginning kbuild: be more careful about matching preprocessed asm ___EXPORT_SYMBOL x86/kexec: add -fno-PIE scripts/has-stack-protector: add -fno-PIE kbuild: add -fno-PIE kbuild: modversions for EXPORT_SYMBOL() for asm kbuild: prevent lib-ksyms.o rebuilds
2016-11-18Merge tag 'v4.9-rc4' into soundJonathan Corbet
Bring in -rc4 patches so I can successfully merge the sound doc changes.
2016-11-17Merge branch 'x86/cpufeature' into x86/asm, to pick up dependencyIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-16kernel-doc: add support for one line inline struct member doc commentsJani Nikula
kernel-doc supports documenting struct members "inline" since a4c6ebede2f9 ("scripts/kernel-doc Allow struct arguments documentation in struct body"). This requires the inline kernel-doc comments to have the opening and closing comment markers (/** and */ respectively) on lines of their own, even for short comments. For example: /** * struct foo - struct documentation */ struct foo { /** * @bar: member documentation */ int bar; }; Add support for one line inline comments: /** * struct foo - struct documentation */ struct foo { /** @bar: member documentation */ int bar; }; Note that mixing of the two in one doc comment is not allowed; either both comment markers must be on lines of their own, or both must be on the one line. This limitation keeps both the comments more uniform, and kernel-doc less complicated. Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-16Kconfig: Regenerate *.c_shipped files after previous changesNicolas Pitre
Signed-off-by: Nicolas Pitre <nico@linaro.org> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Richard Cochran <richardcochran@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Michal Marek <mmarek@suse.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Edward Cree <ecree@solarflare.com> Link: http://lkml.kernel.org/r/1478841010-28605-3-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-16Kconfig: Introduce the "imply" keywordNicolas Pitre
The "imply" keyword is a weak version of "select" where the target config symbol can still be turned off, avoiding those pitfalls that come with the "select" keyword. This is useful e.g. with multiple drivers that want to indicate their ability to hook into a secondary subsystem while allowing the user to configure that subsystem out without also having to unset these drivers. Currently, the same effect can almost be achieved with: config DRIVER_A tristate config DRIVER_B tristate config DRIVER_C tristate config DRIVER_D tristate [...] config SUBSYSTEM_X tristate default DRIVER_A || DRIVER_B || DRIVER_C || DRIVER_D || [...] This is unwieldy to maintain especially with a large number of drivers. Furthermore, there is no easy way to restrict the choice for SUBSYSTEM_X to y or n, excluding m, when some drivers are built-in. The "select" keyword allows for excluding m, but it excludes n as well. Hence this "imply" keyword. The above becomes: config DRIVER_A tristate imply SUBSYSTEM_X config DRIVER_B tristate imply SUBSYSTEM_X [...] config SUBSYSTEM_X tristate This is much cleaner, and way more flexible than "select". SUBSYSTEM_X can still be configured out, and it can be set as a module when none of the drivers are configured in or all of them are modular. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Michal Marek <mmarek@suse.com> Cc: Edward Cree <ecree@solarflare.com> Link: http://lkml.kernel.org/r/1478841010-28605-2-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-15locking/mutex, drm: Introduce mutex_trylock_recursive()Peter Zijlstra
By popular DRM demand, introduce mutex_trylock_recursive() to fix up the two GEM users. Without this it is very easy for these drivers to get stuck in low-memory situations and trigger OOM. Work is in progress to remove the need for this in at least i915. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ding Tianhong <dingtianhong@huawei.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Jason Low <jason.low2@hpe.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Clark <robdclark@gmail.com> Cc: Terry Rudd <terry.rudd@hpe.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Will Deacon <Will.Deacon@arm.com> Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-14recordmcount: arm: Implement make_nopStephen Boyd
In similar spirit to x86 and arm64 support, add a make_nop_arm() to replace calls to mcount with a nop in sections that aren't traced. Link: http://lkml.kernel.org/r/20161018234200.5804-1-sboyd@codeaurora.org Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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