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2013-11-19Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-4/+0
Pull irq cleanups from Ingo Molnar: "This is a multi-arch cleanup series from Thomas Gleixner, which we kept to near the end of the merge window, to not interfere with architecture updates. This series (motivated by the -rt kernel) unifies more aspects of IRQ handling and generalizes PREEMPT_ACTIVE" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: preempt: Make PREEMPT_ACTIVE generic sparc: Use preempt_schedule_irq ia64: Use preempt_schedule_irq m32r: Use preempt_schedule_irq hardirq: Make hardirq bits generic m68k: Simplify low level interrupt handling code genirq: Prevent spurious detection for unconditionally polled interrupts
2013-11-15kernel: remove CONFIG_USE_GENERIC_SMP_HELPERSChristoph Hellwig1-1/+0
We've switched over every architecture that supports SMP to it, so remove the new useless config variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-15hexagon: handle pgtable_page_ctor() failKirill A. Shutemov1-4/+6
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Richard Kuo <rkuo@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13preempt: Make PREEMPT_ACTIVE genericThomas Gleixner1-4/+0
No point in having this bit defined by architecture. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de
2013-11-12Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds1-3/+0
Pull devicetree updates from Rob Herring: "DeviceTree updates for 3.13. This is a bit larger pull request than usual for this cycle with lots of clean-up. - Cross arch clean-up and consolidation of early DT scanning code. - Clean-up and removal of arch prom.h headers. Makes arch specific prom.h optional on all but Sparc. - Addition of interrupts-extended property for devices connected to multiple interrupt controllers. - Refactoring of DT interrupt parsing code in preparation for deferred probe of interrupts. - ARM cpu and cpu topology bindings documentation. - Various DT vendor binding documentation updates" * tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits) powerpc: add missing explicit OF includes for ppc dt/irq: add empty of_irq_count for !OF_IRQ dt: disable self-tests for !OF_IRQ of: irq: Fix interrupt-map entry matching MIPS: Netlogic: replace early_init_devtree() call of: Add Panasonic Corporation vendor prefix of: Add Chunghwa Picture Tubes Ltd. vendor prefix of: Add AU Optronics Corporation vendor prefix of/irq: Fix potential buffer overflow of/irq: Fix bug in interrupt parsing refactor. of: set dma_mask to point to coherent_dma_mask of: add vendor prefix for PHYTEC Messtechnik GmbH DT: sort vendor-prefixes.txt of: Add vendor prefix for Cadence of: Add empty for_each_available_child_of_node() macro definition arm/versatile: Fix versatile irq specifications. of/irq: create interrupts-extended property microblaze/pci: Drop PowerPC-ism from irq parsing of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code. of/irq: Use irq_of_parse_and_map() ...
2013-10-09hexagon: remove unnecessary prom.h includesRob Herring1-3/+0
Hexagon does not have a prom.h header, so it is probably broken with CONFIG_OF enabled. In any case, remove unnecessary prom.h include in preparation to make prom.h optional. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Richard Kuo <rkuo@codeaurora.org> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: linux-hexagon@vger.kernel.org
2013-09-25sched, arch: Create asm/preempt.hPeter Zijlstra1-0/+1
In order to prepare to per-arch implementations of preempt_count move the required bits into an asm-generic header and use this for all archs. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-h5j0c1r3e3fk015m30h8f1zx@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-13Remove GENERIC_HARDIRQ config optionMartin Schwidefsky1-1/+0
After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-09-12arch: mm: pass userspace fault flag to generic fault handlerJohannes Weiner1-2/+4
Unlike global OOM handling, memory cgroup code will invoke the OOM killer in any OOM situation because it has no way of telling faults occuring in kernel context - which could be handled more gracefully - from user-triggered faults. Pass a flag that identifies faults originating in user space from the architecture-specific fault handlers to generic code so that memcg OOM handling can be improved. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: azurIt <azurit@pobox.sk> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig"Chen Gang1-0/+1
All architectures include "kernel/Kconfig.freezer" except three left, so let them include it too, or 'allmodconfig' will report error. The related errors: (with allmodconfig for openrisc): CC kernel/cgroup_freezer.o kernel/cgroup_freezer.c: In function 'freezer_css_online': kernel/cgroup_freezer.c:133:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c:133:15: note: each undeclared identifier is reported only once for each function it appears in kernel/cgroup_freezer.c: In function 'freezer_css_offline': kernel/cgroup_freezer.c:157:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c: In function 'freezer_attach': kernel/cgroup_freezer.c:200:4: error: implicit declaration of function 'freeze_task' kernel/cgroup_freezer.c: In function 'freezer_apply_state': kernel/cgroup_freezer.c:371:16: error: 'system_freezing_cnt' undeclared (first use in this function) Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-14hexagon: delete __cpuinit usage from all hexagon filesPaul Gortmaker2-3/+3
The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/hexagon uses of the __cpuinit macros from all C files. Currently hexagon does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Richard Kuo <rkuo@codeaurora.org> Acked-by: Richard Kuo <rkuo@codeaurora.org> Cc: linux-hexagon@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-07-03mm/hexagon: prepare for removing num_physpages and simplify mem_init()Jiang Liu1-3/+1
Prepare for removing num_physpages and simplify mem_init(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Richard Kuo <rkuo@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03mm: concentrate modification of totalram_pages into the mm coreJiang Liu1-1/+1
Concentrate code to modify totalram_pages into the mm core, so the arch memory initialized code doesn't need to take care of it. With these changes applied, only following functions from mm core modify global variable totalram_pages: free_bootmem_late(), free_all_bootmem(), free_all_bootmem_node(), adjust_managed_page_count(). With this patch applied, it will be much more easier for us to keep totalram_pages and zone->managed_pages in consistence. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: David Howells <dhowells@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: <sworddragon2@aol.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Michel Lespinasse <walken@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-29consolidate io_remap_pfn_range definitionsAl Viro1-4/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-09Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds1-3/+0
Pull removal of GENERIC_GPIO from Grant Likely: "GENERIC_GPIO now synonymous with GPIOLIB. There are no longer any valid cases for enableing GENERIC_GPIO without GPIOLIB, even though it is possible to do so which has been causing confusion and breakage. This branch does the work to completely eliminate GENERIC_GPIO." * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux: gpio: update gpio Chinese documentation Remove GENERIC_GPIO config option Convert selectors of GENERIC_GPIO to GPIOLIB blackfin: force use of gpiolib m68k: coldfire: use gpiolib mips: pnx833x: remove requirement for GENERIC_GPIO openrisc: default GENERIC_GPIO to false avr32: default GENERIC_GPIO to false xtensa: remove explicit selection of GENERIC_GPIO sh: replace CONFIG_GENERIC_GPIO by CONFIG_GPIOLIB powerpc: remove redundant GENERIC_GPIO selection unicore32: default GENERIC_GPIO to false unicore32: remove unneeded select GENERIC_GPIO arm: plat-orion: use GPIO driver on CONFIG_GPIOLIB arm: remove redundant GENERIC_GPIO selection mips: alchemy: require gpiolib mips: txx9: change GENERIC_GPIO to GPIOLIB mips: loongson: use GPIO driver on CONFIG_GPIOLIB mips: remove redundant GENERIC_GPIO select
2013-05-08Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernelLinus Torvalds2-8/+6
Pull Hexagon fixes from Richard Kuo: "A bug fix and a Kconfig cleanup" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel: HEXAGON: Remove non existent reference to GENERIC_KERNEL_EXECVE & GENERIC_KERNEL_THREAD Hexagon: fix register used to call do_work_pending
2013-05-07HEXAGON: Remove non existent reference to GENERIC_KERNEL_EXECVE & GENERIC_KERNEL_THREADAlexander Shiyan1-2/+0
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-05-07Hexagon: fix register used to call do_work_pendingRichard Kuo1-6/+6
ABI v2 callee saves start at R24. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-05-01Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernelLinus Torvalds33-343/+659
Pull Hexagon fixes from Richard Kuo: "Changes for the Hexagon architecture (and one touching OpenRISC). They include various fixes to make use of additional arch features and cleanups. The largest functional change is a cleanup of the signal and event return paths" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel: (32 commits) Hexagon: add v4 CS regs to core copyout macro Hexagon: use correct translation for VMALLOC_START Hexagon: use correct translations for DMA mappings Hexagon: fix return value for notify_resume case in do_work_pending Hexagon: fix signal number for user mem faults Hexagon: remove two Kconfig entries arch: remove CONFIG_GENERIC_FIND_NEXT_BIT again Hexagon: update copyright dates Hexagon: add translation types for __vmnewmap Hexagon: fix signal.c compile error Hexagon: break up user fn/arg register setting Hexagon: use generic sys_fork, sys_vfork, and sys_clone Hexagon: fix psp/sp macro Hexagon: fix up int enable/disable at ret_from_fork Hexagon: add IOMEM and _relaxed IO macros Hexagon: switch to using the device type for IO mappings Hexagon: don't print info for offline CPU's Hexagon: add support for single-stepping (v4+) Hexagon: use correct work mask when checking for more work Hexagon: add support for additional exceptions ...
2013-04-30Hexagon: add v4 CS regs to core copyout macroRichard Kuo1-3/+12
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use correct translation for VMALLOC_STARTRichard Kuo1-2/+1
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use correct translations for DMA mappingsRichard Kuo2-10/+22
With physical offsets, pa<->va translations aren't just based on PAGE_OFFSET anymore. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix return value for notify_resume case in do_work_pendingRichard Kuo1-0/+1
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix signal number for user mem faultsRichard Kuo1-2/+2
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: remove two Kconfig entriesPaul Bolle1-9/+0
The Kconfig entries for HEXAGON_VM and HEXAGON_ANGEL_TRAPS were added, together with the configuration and makefiles for the Hexagon architecture, in v3.2. They have never been used. They can safely be removed. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> [rkuo@codeaurora.org: adjust for line changes in Kconfig] Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30arch: remove CONFIG_GENERIC_FIND_NEXT_BIT againPaul Bolle1-3/+0
CONFIG_GENERIC_FIND_NEXT_BIT was removed in v3.0, but reappeared in two architectures. Remove it again. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Jonas Bonn <jonas@southpole.se> Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: update copyright datesRichard Kuo20-20/+20
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add translation types for __vmnewmapRichard Kuo1-0/+7
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix signal.c compile errorRichard Kuo1-0/+2
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: break up user fn/arg register settingRichard Kuo1-1/+2
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use generic sys_fork, sys_vfork, and sys_cloneRichard Kuo2-0/+5
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix psp/sp macroRichard Kuo1-2/+1
Based on feedback from Al Viro; previous-stack-pointer and user reg for same should always be kept consistent. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix up int enable/disable at ret_from_forkRichard Kuo1-2/+11
Check return coming out of check_work_pending, and if copy_thread passed us a function in r24, call it. Based on feedback from Al Viro. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add IOMEM and _relaxed IO macrosRichard Kuo1-0/+14
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: switch to using the device type for IO mappingsRichard Kuo1-5/+4
Uncached on our architecture can still have side effects such as canceled/replayed transactions; device type prevents this. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: don't print info for offline CPU'sRichard Kuo1-0/+5
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for single-stepping (v4+)Richard Kuo6-1/+38
Hardware single-step is only available on v4 and later architectures. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use correct work mask when checking for more workRichard Kuo1-1/+1
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for additional exceptionsRichard Kuo1-0/+10
Add multi-reg-write and unaligned-PC exceptions. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix initial page table setup prior to jump to VARichard Kuo1-12/+73
Use the exact number of pages needed to be mapped pre-VA-jump, then map 896MB afterwards, which the arch mem init will fix up. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: remove keyring related callRichard Kuo1-3/+0
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: check to if we will overflow the signal stackRichard Kuo1-0/+4
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: Signal and return path fixesRichard Kuo5-88/+84
This fixes the return value of sigreturn and moves the work pending check into a c routine for readability and fixes the loop for multiple pending signals. Based on feedback from Al Viro. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for new v4+ registersRichard Kuo8-48/+206
Add support for a couple new v4+ registers, along with newer save/restore pt_regs. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add individual register access for switch_stackRichard Kuo1-6/+43
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use defines for MIN_KERNEL_SEG calculationRichard Kuo1-1/+1
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: use GENERIC_CPU_DEVICESRichard Kuo3-53/+2
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: change arch version config to allow comparisonsRichard Kuo3-31/+10
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: add support for ARCH_PFN_OFFSETRichard Kuo8-55/+91
Add support for loading the kernel at a physical offset. The offset should still be 4M aligned. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
2013-04-30Hexagon: fix __atomic_add_unlessRichard Kuo1-9/+11
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
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