kernel/git/stable/linux.git/arch/sh/include, branch linux-3.17.y

irq_work: Introduce arch_irq_work_has_interrupt()

2014-10-15T10:29:23+00:00

commit c5c38ef3d70377dc504a6a3f611a3ec814bc757b upstream. The nohz full code needs irq work to trigger its own interrupt so that the subsystem can work even when the tick is stopped. Lets introduce arch_irq_work_has_interrupt() that archs can override to tell about their support for this ability. Signed-off-by: Peter Zijlstra Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Signed-off-by: Frederic Weisbecker Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

2014-08-11T14:14:01+00:00

Pull slave-dma updates from Vinod Koul: "Some notable changes are: - new driver for AMBA AXI NBPF by Guennadi - new driver for sun6i controller by Maxime - pl330 drivers fixes from Lar's - sh-dma updates and fixes from Laurent, Geert and Kuninori - Documentation updates from Geert - drivers fixes and updates spread over dw, edma, freescale, mpc512x etc.." * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (72 commits) dmaengine: sun6i: depends on RESET_CONTROLLER dma: at_hdmac: fix invalid remaining bytes detection dmaengine: nbpfaxi: don't build this driver where it cannot be used dmaengine: nbpf_error_get_channel() can be static dma: pl08x: Use correct specifier for size_t values dmaengine: Remove the context argument to the prep_dma_cyclic operation dmaengine: nbpfaxi: convert to tasklet dmaengine: nbpfaxi: fix a theoretical race dmaengine: add a driver for AMBA AXI NBPF DMAC IP cores dmaengine: add device tree binding documentation for the nbpfaxi driver dmaengine: edma: Do not register second device when booted with DT dmaengine: edma: Do not change the error code returned from edma_alloc_slot dmaengine: rcar-dmac: Add device tree bindings documentation dmaengine: shdma: Allocate cyclic sg list dynamically dmaengine: shdma: Make channel filter ignore unrelated devices dmaengine: sh: Rework Kconfig and Makefile dmaengine: sun6i: Fix memory leaks dmaengine: sun6i: Free the interrupt before killing the tasklet dmaengine: sun6i: Remove switch statement from buswidth convertion routine dmaengine: of: kconfig: select DMA_ENGINE when DMA_OF is selected ...

arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area

2014-08-08T22:57:27+00:00

The core mm code will provide a default gate area based on FIXADDR_USER_START and FIXADDR_USER_END if !defined(__HAVE_ARCH_GATE_AREA) && defined(AT_SYSINFO_EHDR). This default is only useful for ia64. arm64, ppc, s390, sh, tile, 64-bit UML, and x86_32 have their own code just to disable it. arm, 32-bit UML, and x86_64 have gate areas, but they have their own implementations. This gets rid of the default and moves the code into ia64. This should save some code on architectures without a gate area: it's now possible to inline the gate_area functions in the default case. Signed-off-by: Andy Lutomirski Acked-by: Nathan Lynch Acked-by: H. Peter Anvin Acked-by: Benjamin Herrenschmidt [in principle] Acked-by: Richard Weinberger [for um] Acked-by: Will Deacon [for arm64] Cc: Catalin Marinas Cc: Will Deacon Cc: Tony Luck Cc: Fenghua Yu Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Chris Metcalf Cc: Jeff Dike Cc: Richard Weinberger Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Nathan Lynch Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sh: fix build error by adding generic ioport_{map/unmap}()

2014-08-07T01:01:13+00:00

Fix build error as reported by Geert Uytterhoeven here: http://kisskb.ellerman.id.au/kisskb/buildresult/11607865/ The error happens when CONFIG_HAS_IOPORT_MAP=n because of which there are missing definitions of ioport_map/unmap(). Fix this build error by adding these prototypes. Signed-off-by: Pranith Kumar Reported-by: Geert Uytterhoeven Cc: [3.16+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sh: remove CPU_SUBTYPE_SH7764

2014-08-07T01:01:12+00:00

The symbol is an orphan, get rid of it. Submitted by Richard a few months ago as "[PATCH 21/28] Remove CPU_SUBTYPE_SH7764". [pebolle@tiscali.nl: re-added dropped ||] Signed-off-by: Richard Weinberger Signed-off-by: Paul Bolle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

arch, locking: Ciao arch_mutex_cpu_relax()

2014-07-17T10:32:47+00:00

The arch_mutex_cpu_relax() function, introduced by 34b133f, is hacky and ugly. It was added a few years ago to address the fact that common cpu_relax() calls include yielding on s390, and thus impact the optimistic spinning functionality of mutexes. Nowadays we use this function well beyond mutexes: rwsem, qrwlock, mcs and lockref. Since the macro that defines the call is in the mutex header, any users must include mutex.h and the naming is misleading as well. This patch (i) renames the call to cpu_relax_lowlatency ("relax, but only if you can do it with very low latency") and (ii) defines it in each arch's asm/processor.h local header, just like for regular cpu_relax functions. On all archs, except s390, cpu_relax_lowlatency is simply cpu_relax, and thus we can take it out of mutex.h. While this can seem redundant, I believe it is a good choice as it allows us to move out arch specific logic from generic locking primitives and enables future(?) archs to transparently define it, similarly to System Z. Signed-off-by: Davidlohr Bueso Signed-off-by: Peter Zijlstra Cc: Andrew Morton Cc: Anton Blanchard Cc: Aurelien Jacquiot Cc: Benjamin Herrenschmidt Cc: Bharat Bhushan Cc: Catalin Marinas Cc: Chen Liqin Cc: Chris Metcalf Cc: Christian Borntraeger Cc: Chris Zankel Cc: David Howells Cc: David S. Miller Cc: Deepthi Dharwar Cc: Dominik Dingel Cc: Fenghua Yu Cc: Geert Uytterhoeven Cc: Guan Xuetao Cc: Haavard Skinnemoen Cc: Hans-Christian Egtvedt Cc: Heiko Carstens Cc: Helge Deller Cc: Hirokazu Takata Cc: Ivan Kokshaysky Cc: James E.J. Bottomley Cc: James Hogan Cc: Jason Wang Cc: Jesper Nilsson Cc: Joe Perches Cc: Jonas Bonn Cc: Joseph Myers Cc: Kees Cook Cc: Koichi Yasutake Cc: Lennox Wu Cc: Linus Torvalds Cc: Mark Salter Cc: Martin Schwidefsky Cc: Matt Turner Cc: Max Filippov Cc: Michael Neuling Cc: Michal Simek Cc: Mikael Starvik Cc: Nicolas Pitre Cc: Paolo Bonzini Cc: Paul Burton Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Paul Mackerras Cc: Qais Yousef Cc: Qiaowei Ren Cc: Rafael Wysocki Cc: Ralf Baechle Cc: Richard Henderson Cc: Richard Kuo Cc: Russell King Cc: Steven Miao Cc: Steven Rostedt Cc: Stratos Karafotis Cc: Tim Chen Cc: Tony Luck Cc: Vasily Kulikov Cc: Vineet Gupta Cc: Vineet Gupta Cc: Waiman Long Cc: Will Deacon Cc: Wolfram Sang Cc: adi-buildroot-devel@lists.sourceforge.net Cc: linux390@de.ibm.com Cc: linux-alpha@vger.kernel.org Cc: linux-am33-list@redhat.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: linux-cris-kernel@axis.com Cc: linux-hexagon@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux@lists.openrisc.net Cc: linux-m32r-ja@ml.linux-m32r.org Cc: linux-m32r@ml.linux-m32r.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-metag@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-xtensa@linux-xtensa.org Cc: sparclinux@vger.kernel.org Link: http://lkml.kernel.org/r/1404079773.2619.4.camel@buesod1.americas.hpqcorp.net Signed-off-by: Ingo Molnar

dmaengine: shdma: Add more register documentation

2014-07-09T08:55:57+00:00

Also add a few definitions that were missing. Signed-off-by: Geert Uytterhoeven Signed-off-by: Simon Horman

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into next

2014-06-06T17:43:28+00:00

Pull arm64 updates from Catalin Marinas: - Optimised assembly string/memory routines (based on the AArch64 Cortex Strings library contributed to glibc but re-licensed under GPLv2) - Optimised crypto algorithms making use of the ARMv8 crypto extensions (together with kernel API for using FPSIMD instructions in interrupt context) - Ftrace support - CPU topology parsing from DT - ESR_EL1 (Exception Syndrome Register) exposed to user space signal handlers for SIGSEGV/SIGBUS (useful to emulation tools like Qemu) - 1GB section linear mapping if applicable - Barriers usage clean-up - Default pgprot clean-up Conflicts as per Catalin. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (57 commits) arm64: kernel: initialize broadcast hrtimer based clock event device arm64: ftrace: Add system call tracepoint arm64: ftrace: Add CALLER_ADDRx macros arm64: ftrace: Add dynamic ftrace support arm64: Add ftrace support ftrace: Add arm64 support to recordmcount arm64: Add 'notrace' attribute to unwind_frame() for ftrace arm64: add __ASSEMBLY__ in asm/insn.h arm64: Fix linker script entry point arm64: lib: Implement optimized string length routines arm64: lib: Implement optimized string compare routines arm64: lib: Implement optimized memcmp routine arm64: lib: Implement optimized memset routine arm64: lib: Implement optimized memmove routine arm64: lib: Implement optimized memcpy routine arm64: defconfig: enable a few more common/useful options in defconfig ftrace: Make CALLER_ADDRx macros more generic arm64: Fix deadlock scenario with smp_send_stop() arm64: Fix machine_shutdown() definition arm64: Support arch_irq_work_raise() via self IPIs ...

sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL

2014-06-04T23:54:14+00:00

sys_sgetmask and sys_ssetmask are obsolete system calls no longer supported in libc. This patch replaces architecture related __ARCH_WANT_SYS_SGETMAX by expert mode configuration.That option is enabled by default for those architectures. Signed-off-by: Fabian Frederick Cc: Steven Miao Cc: Mikael Starvik Cc: Jesper Nilsson Cc: David Howells Cc: Geert Uytterhoeven Cc: Michal Simek Cc: Ralf Baechle Cc: Koichi Yasutake Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "David S. Miller" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Greg Ungerer Cc: Heiko Carstens Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

2014-06-03T19:57:53+00:00

Pull core locking updates from Ingo Molnar: "The main changes in this cycle were: - reduced/streamlined smp_mb__*() interface that allows more usecases and makes the existing ones less buggy, especially in rarer architectures - add rwsem implementation comments - bump up lockdep limits" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits) rwsem: Add comments to explain the meaning of the rwsem's count field lockdep: Increase static allocations arch: Mass conversion of smp_mb__*() arch,doc: Convert smp_mb__*() arch,xtensa: Convert smp_mb__*() arch,x86: Convert smp_mb__*() arch,tile: Convert smp_mb__*() arch,sparc: Convert smp_mb__*() arch,sh: Convert smp_mb__*() arch,score: Convert smp_mb__*() arch,s390: Convert smp_mb__*() arch,powerpc: Convert smp_mb__*() arch,parisc: Convert smp_mb__*() arch,openrisc: Convert smp_mb__*() arch,mn10300: Convert smp_mb__*() arch,mips: Convert smp_mb__*() arch,metag: Convert smp_mb__*() arch,m68k: Convert smp_mb__*() arch,m32r: Convert smp_mb__*() arch,ia64: Convert smp_mb__*() ...