linux/include/asm-generic/vmlinux.lds.h, branch v4.11

vmlinux.lds: add missing VMLINUX_SYMBOL macros

2017-04-08T07:47:48Z

When __{start,end}_ro_after_init is referenced from C code, we run into the following build errors on blackfin: kernel/extable.c:169: undefined reference to `__start_ro_after_init' kernel/extable.c:169: undefined reference to `__end_ro_after_init' The build error is due to the fact that blackfin is one of the few arches that prepends an underscore '_' to all symbols defined in C. Fix this by wrapping __{start,end}_ro_after_init in vmlinux.lds.h with VMLINUX_SYMBOL(), which adds the necessary prefix for arches that have HAVE_UNDERSCORE_SYMBOL_PREFIX. Link: http://lkml.kernel.org/r/1491259387-15869-1-git-send-email-jeyu@redhat.com Signed-off-by: Jessica Yu Acked-by: Kees Cook Cc: Arnd Bergmann Cc: Eddie Kovsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-04-02T16:22:03Z

Pull timer fixes from Thomas Gleixner: "Two small fixes for the new CLKEVT_OF infrastructure" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: vmlinux.lds: Add __clkevt_of_table to kernel clockevents: Fix syntax error in clkevt-of macro

mm: fix section name for .data..ro_after_init

2017-04-01T00:13:30Z

A section name for .data..ro_after_init was added by both: commit d07a980c1b8d ("s390: add proper __ro_after_init support") and commit d7c19b066dcf ("mm: kmemleak: scan .data.ro_after_init") The latter adds incorrect wrapping around the existing s390 section, and came later. I'd prefer the s390 naming, so this moves the s390-specific name up to the asm-generic/sections.h and renames the section as used by kmemleak (and in the future, kernel/extable.c). Link: http://lkml.kernel.org/r/20170327192213.GA129375@beast Signed-off-by: Kees Cook Acked-by: Heiko Carstens [s390 parts] Acked-by: Jakub Kicinski Cc: Eddie Kovsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

vmlinux.lds: Add __clkevt_of_table to kernel

2017-03-28T07:40:39Z

The code introduced by commit 0c8893c9095d ("clockevents: Add a clkevt-of mechanism like clksrc-of") refer to __clkevt_of_table what doesn't exist in the vmlinux. As a result kernel build failed with error: "clkevt-probe.c:63: undefined reference to `__clkevt_of_table’" Fixes: 0c8893c9095d ("clockevents: Add a clkevt-of mechanism like clksrc-of") Signed-off-by: Alexander Kochetkov Signed-off-by: Daniel Lezcano

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-12-18T00:24:13Z

Pull kbuild updates from Michal Marek: - prototypes for x86 asm-exported symbols (Adam Borowski) and a warning about missing CRCs (Nick Piggin) - asm-exports fix for LTO (Nicolas Pitre) - thin archives improvements (Nick Piggin) - linker script fix for CONFIG_LD_DEAD_CODE_DATA_ELIMINATION (Nick Piggin) - genksyms support for __builtin_va_list keyword - misc minor fixes * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: x86/kbuild: enable modversions for symbols exported from asm kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case scripts/kallsyms: remove last remnants of --page-offset option make use of make variable CURDIR instead of calling pwd kbuild: cmd_export_list: tighten the sed script kbuild: minor improvement for thin archives build kbuild: modpost warn if export version crc is missing kbuild: keep data tables through dead code elimination kbuild: improve linker compatibility with lib-ksyms.o build genksyms: Regenerate parser kbuild/genksyms: handle va_list type kbuild: thin archives for multi-y targets kbuild: kallsyms allow 3-pass generation if symbols size has changed

ACPI/IORT: Introduce linker section for IORT entries probing

2016-11-29T15:57:42Z

Since commit e647b532275b ("ACPI: Add early device probing infrastructure") the kernel has gained the infrastructure that allows adding linker script section entries to execute ACPI driver callbacks (ie probe routines) for all subsystems that register a table entry in the respective kernel section (eg clocksource, irqchip). Since ARM IOMMU devices data is described through IORT tables when booting with ACPI, the ARM IOMMU drivers must be made able to hook ACPI callback routines that are called to probe IORT entries and initialize the respective IOMMU devices. To avoid adding driver specific hooks into IORT table initialization code (breaking therefore code modularity - ie ACPI IORT code must be made aware of ARM SMMU drivers ACPI init callbacks), this patch adds code that allows ARM SMMU drivers to take advantage of the ACPI early probing infrastructure, so that they can add linker script section entries containing drivers callback to be executed on IORT tables detection. Since IORT nodes are differentiated by a type, the callback routines can easily parse the IORT table entries, check the IORT nodes and carry out some actions whenever the IORT node type associated with the driver specific callback is matched. Signed-off-by: Lorenzo Pieralisi Reviewed-by: Hanjun Guo Reviewed-by: Tomasz Nowicki Tested-by: Hanjun Guo Tested-by: Tomasz Nowicki Cc: Tomasz Nowicki Cc: "Rafael J. Wysocki" Cc: Marc Zyngier Signed-off-by: Will Deacon

kbuild: keep data tables through dead code elimination

2016-11-29T14:58:57Z

When CONFIG_LD_DEAD_CODE_DATA_ELIMINATION is enabled we must ensure that we still keep various programatically-accessed tables. [npiggin: Fold Paul's patches into one, and add a few more tables. diff symbol tables of allyesconfig with/without -gc-sections shows up lost tables quite easily.] Signed-off-by: Paul Burton Signed-off-by: Nicholas Piggin Signed-off-by: Michal Marek

mm: kmemleak: scan .data.ro_after_init

2016-11-11T16:12:37Z

Limit the number of kmemleak false positives by including .data.ro_after_init in memory scanning. To achieve this we need to add symbols for start and end of the section to the linker scripts. The problem was been uncovered by commit 56989f6d8568 ("genetlink: mark families as __ro_after_init"). Link: http://lkml.kernel.org/r/1478274173-15218-1-git-send-email-jakub.kicinski@netronome.com Reviewed-by: Catalin Marinas Signed-off-by: Jakub Kicinski Cc: Arnd Bergmann Cc: Cong Wang Cc: Johannes Berg Cc: Martin Schwidefsky Cc: Heiko Carstens Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14T21:26:58Z

Pull kbuild updates from Michal Marek: - EXPORT_SYMBOL for asm source by Al Viro. This does bring a regression, because genksyms no longer generates checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is working on a patch to fix this. Plus, we are talking about functions like strcpy(), which rarely change prototypes. - Fixes for PPC fallout of the above by Stephen Rothwell and Nick Piggin - fixdep speedup by Alexey Dobriyan. - preparatory work by Nick Piggin to allow architectures to build with -ffunction-sections, -fdata-sections and --gc-sections - CONFIG_THIN_ARCHIVES support by Stephen Rothwell - fix for filenames with colons in the initramfs source by me. * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits) initramfs: Escape colons in depfile ppc: there is no clear_pages to export powerpc/64: whitelist unresolved modversions CRCs kbuild: -ffunction-sections fix for archs with conflicting sections kbuild: add arch specific post-link Makefile kbuild: allow archs to select link dead code/data elimination kbuild: allow architectures to use thin archives instead of ld -r kbuild: Regenerate genksyms lexer kbuild: genksyms fix for typeof handling fixdep: faster CONFIG_ search ia64: move exports to definitions sparc32: debride memcpy.S a bit [sparc] unify 32bit and 64bit string.h sparc: move exports to definitions ppc: move exports to definitions arm: move exports to definitions s390: move exports to definitions m68k: move exports to definitions alpha: move exports to actual definitions x86: move exports to actual definitions ...

nmi_backtrace: generate one-line reports for idle cpus

2016-10-08T01:46:30Z

When doing an nmi backtrace of many cores, most of which are idle, the output is a little overwhelming and very uninformative. Suppress messages for cpus that are idling when they are interrupted and just emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN". We do this by grouping all the cpuidle code together into a new .cpuidle.text section, and then checking the address of the interrupted PC to see if it lies within that section. This commit suitably tags x86 and tile idle routines, and only adds in the minimal framework for other architectures. Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf Acked-by: Peter Zijlstra (Intel) Tested-by: Peter Zijlstra (Intel) Tested-by: Daniel Thompson [arm] Tested-by: Petr Mladek Cc: Aaron Tomlin Cc: Peter Zijlstra (Intel) Cc: "Rafael J. Wysocki" Cc: Russell King Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds