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* Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2015-02-181-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull dmaengine updates from Vinod Koul: "This update brings: - the big cleanup up by Maxime for device control and slave capabilities. This makes the API much cleaner. - new IMG MDC driver by Andrew - new Renesas R-Car Gen2 DMA Controller driver by Laurent along with bunch of fixes on rcar drivers - odd fixes and updates spread over driver" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (130 commits) dmaengine: pl330: add DMA_PAUSE feature dmaengine: pl330: improve pl330_tx_status() function dmaengine: rcar-dmac: Disable channel 0 when using IOMMU dmaengine: rcar-dmac: Work around descriptor mode IOMMU errata dmaengine: rcar-dmac: Allocate hardware descriptors with DMAC device dmaengine: rcar-dmac: Fix oops due to unintialized list in error ISR dmaengine: rcar-dmac: Fix spinlock issues in interrupt dmaenegine: edma: fix sparse warnings dmaengine: rcar-dmac: Fix uninitialized variable usage dmaengine: shdmac: extend PM methods dmaengine: shdmac: use SET_RUNTIME_PM_OPS() dmaengine: pl330: fix bug that cause start the same descs in cyclic dmaengine: at_xdmac: allow muliple dwidths when doing slave transfers dmaengine: at_xdmac: simplify channel configuration stuff dmaengine: at_xdmac: introduce save_cc field dmaengine: at_xdmac: wait for in-progress transaction to complete after pausing a channel ioat: fail self-test if wait_for_completion times out dmaengine: dw: define DW_DMA_MAX_NR_MASTERS dmaengine: dw: amend description of dma_dev field dmatest: move src_off, dst_off, len inside loop ...
| * dmaengine: dw: define DW_DMA_MAX_NR_MASTERSAndy Shevchenko2015-02-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | Instead of using magic number in the code the patch provides DW_DMA_MAX_NR_MASTERS constant. While here, restrict the reading of data width array by amount of the actual number of AHB masters. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | Merge tag 'arc-3.20-rc1' of ↵Linus Torvalds2015-02-167-29/+47
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC updates from Vineet Gupta: "Some fixes, nothing too exciting this time as well..." * tag 'arc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: fix page address calculation if PAGE_OFFSET != LINUX_LINK_BASE ARC: Fix earlycon build breakage ARC: Dynamically determine BASE_BAUD from DeviceTree arc: Remove unused prepare_to_copy() ARC: use ACCESS_ONCE in cmpxchg loop ARC: add some more comments to ret_from_fork ARC: fix /proc/cpuinfo for offline cpus
| * | ARC: fix page address calculation if PAGE_OFFSET != LINUX_LINK_BASEAlexey Brodkin2015-02-131-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We used to calculate page address differently in 2 cases: 1. In virt_to_page(x) we do --->8--- mem_map + (x - CONFIG_LINUX_LINK_BASE) >> PAGE_SHIFT --->8--- 2. In in pte_page(x) we do --->8--- mem_map + (pte_val(x) - PAGE_OFFSET) >> PAGE_SHIFT --->8--- That leads to problems in case PAGE_OFFSET != CONFIG_LINUX_LINK_BASE - different pages will be selected depending on where and how we calculate page address. In particular in the STAR 9000853582 when gdb attempted to read memory of another process it got improper page in get_user_pages() because this is exactly one of the places where we search for a page by pte_page(). The fix is trivial - we need to calculate page address similarly in both cases. Cc: <stable@vger.kernel.org> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | ARC: Fix earlycon build breakagePeter Hurley2015-02-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ffb7fcd66f14 ("ARC: Dynamically determine BASE_BAUD from DeviceTree") breaks arc:defconfig build: drivers/built-in.o: In function `of_setup_earlycon': (.init.text+0xb3e): undefined reference to `arc_early_base_baud' drivers/built-in.o: In function `setup_earlycon': (.init.text+0xcd0): undefined reference to `arc_early_base_baud' make: *** [vmlinux] Error 1 BASE_BAUD is only required for earlycon, which should depend on CONFIG_SERIAL_EARLYCON. Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | ARC: Dynamically determine BASE_BAUD from DeviceTreeVineet Gupta2015-02-022-18/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 8250 earlycon is broken on multi-platform ARC because the UART clk value (BASE_BAUD) is fixed at build time. Instead, determine the appropriate UART clk at runtime; parse the devicetree early for platforms requiring alternate UART clk values (currently only the TB10X platform). Cc: Jiri Slaby <jslaby@suse.cz> Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Rob Herring <robh@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | arc: Remove unused prepare_to_copy()Tobias Klauser2015-02-021-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | prepare_to_copy() was removed from all architectures supported at that time in commit 55ccf3fe3f9a ("fork: move the real prepare_to_copy() users to arch_dup_task_struct()"). Remove it from arc as well. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | ARC: use ACCESS_ONCE in cmpxchg loopVineet Gupta2015-02-021-1/+1
| | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | ARC: add some more comments to ret_from_forkVineet Gupta2015-02-021-5/+9
| | | | | | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * | ARC: fix /proc/cpuinfo for offline cpusVineet Gupta2015-02-021-1/+6
| |/ | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | all arches, signal: move restart_block to struct task_structAndy Lutomirski2015-02-122-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an attacker can cause a controlled kernel stack overflow, overwriting the restart block is a very juicy exploit target. This is because the restart_block is held in the same memory allocation as the kernel stack. Moving the restart block to struct task_struct prevents this exploit by making the restart_block harder to locate. Note that there are other fields in thread_info that are also easy targets, at least on some architectures. It's also a decent simplification, since the restart code is more or less identical on all architectures. [james.hogan@imgtec.com: metag: align thread_info::supervisor_stack] Signed-off-by: Andy Lutomirski <luto@amacapital.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: David Miller <davem@davemloft.net> Acked-by: Richard Weinberger <richard@nod.at> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Steven Miao <realmz6@gmail.com> Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mm: make FIRST_USER_ADDRESS unsigned long on all archsKirill A. Shutemov2015-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LKP has triggered a compiler warning after my recent patch "mm: account pmd page tables to the process": mm/mmap.c: In function 'exit_mmap': >> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default] The code: > 2857 WARN_ON(mm_nr_pmds(mm) > 2858 round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT); In this, on tile, we have FIRST_USER_ADDRESS defined as 0. round_up() has the same type -- int. PUD_SHIFT. I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned long. On every arch for consistency. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | arc: drop _PAGE_FILE and pte_file()-related helpersKirill A. Shutemov2015-02-101-12/+1
| | | | | | | | | | | | | | | | | | | | We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | arc: mm: Fix build failureGuenter Roeck2015-01-301-1/+1
| | | | | | | | | | | | | | | | Fix misspelled define. Fixes: 33692f27597f ("vm: add VM_FAULT_SIGSEGV handling support") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | vm: add VM_FAULT_SIGSEGV handling supportLinus Torvalds2015-01-291-0/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The core VM already knows about VM_FAULT_SIGBUS, but cannot return a "you should SIGSEGV" error, because the SIGSEGV case was generally handled by the caller - usually the architecture fault handler. That results in lots of duplication - all the architecture fault handlers end up doing very similar "look up vma, check permissions, do retries etc" - but it generally works. However, there are cases where the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV. In particular, when accessing the stack guard page, libsigsegv expects a SIGSEGV. And it usually got one, because the stack growth is handled by that duplicated architecture fault handler. However, when the generic VM layer started propagating the error return from the stack expansion in commit fee7e49d4514 ("mm: propagate error from stack expansion even for guard page"), that now exposed the existing VM_FAULT_SIGBUS result to user space. And user space really expected SIGSEGV, not SIGBUS. To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those duplicate architecture fault handlers about it. They all already have the code to handle SIGSEGV, so it's about just tying that new return value to the existing code, but it's all a bit annoying. This is the mindless minimal patch to do this. A more extensive patch would be to try to gather up the mostly shared fault handling logic into one generic helper routine, and long-term we really should do that cleanup. Just from this patch, you can generally see that most architectures just copied (directly or indirectly) the old x86 way of doing things, but in the meantime that original x86 model has been improved to hold the VM semaphore for shorter times etc and to handle VM_FAULT_RETRY and other "newer" things, so it would be a good idea to bring all those improvements to the generic case and teach other architectures about them too. Reported-and-tested-by: Takashi Iwai <tiwai@suse.de> Tested-by: Jan Engelhardt <jengelh@inai.de> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots" Cc: linux-arch@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'arc-3.19-rc1' of ↵Linus Torvalds2014-12-187-73/+22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull arch/arc updates from Vineet Gupta: "Minor updates for ARC for 3.19" * tag 'arc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: rename default defconfig ARC: [nsimosci] move peripherals to match model to FPGA ARC: document memory clobber in irq control macros ARC: R-M-W assist locks only needed for !LLSC ARC: add power management options
| * ARC: rename default defconfigVineet Gupta2014-12-173-64/+1
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: [nsimosci] move peripherals to match model to FPGAVineet Gupta2014-12-151-9/+9
| | | | | | | | | | | | | | This allows the sdplite/Zebu images to run on OSCI simulation platform Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
| * ARC: document memory clobber in irq control macrosVineet Gupta2014-12-121-0/+9
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: R-M-W assist locks only needed for !LLSCVineet Gupta2014-12-121-0/+2
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: add power management optionsAlexey Brodkin2014-11-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | Even though ARC cores itself don't have any power management except SLEEP state it's possible to use power management features of selected peripherals. For example USB OTG requires PM_RUNTIME which is only available if kernel/power/Kconfig is sourced by architecture. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2014-12-111-1/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) New offloading infrastructure and example 'rocker' driver for offloading of switching and routing to hardware. This work was done by a large group of dedicated individuals, not limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend, Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu 2) Start making the networking operate on IOV iterators instead of modifying iov objects in-situ during transfers. Thanks to Al Viro and Herbert Xu. 3) A set of new netlink interfaces for the TIPC stack, from Richard Alpe. 4) Remove unnecessary looping during ipv6 routing lookups, from Martin KaFai Lau. 5) Add PAUSE frame generation support to gianfar driver, from Matei Pavaluca. 6) Allow for larger reordering levels in TCP, which are easily achievable in the real world right now, from Eric Dumazet. 7) Add a variable of napi_schedule that doesn't need to disable cpu interrupts, from Eric Dumazet. 8) Use a doubly linked list to optimize neigh_parms_release(), from Nicolas Dichtel. 9) Various enhancements to the kernel BPF verifier, and allow eBPF programs to actually be attached to sockets. From Alexei Starovoitov. 10) Support TSO/LSO in sunvnet driver, from David L Stevens. 11) Allow controlling ECN usage via routing metrics, from Florian Westphal. 12) Remote checksum offload, from Tom Herbert. 13) Add split-header receive, BQL, and xmit_more support to amd-xgbe driver, from Thomas Lendacky. 14) Add MPLS support to openvswitch, from Simon Horman. 15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen Klassert. 16) Do gro flushes on a per-device basis using a timer, from Eric Dumazet. This tries to resolve the conflicting goals between the desired handling of bulk vs. RPC-like traffic. 17) Allow userspace to ask for the CPU upon what a packet was received/steered, via SO_INCOMING_CPU. From Eric Dumazet. 18) Limit GSO packets to half the current congestion window, from Eric Dumazet. 19) Add a generic helper so that all drivers set their RSS keys in a consistent way, from Eric Dumazet. 20) Add xmit_more support to enic driver, from Govindarajulu Varadarajan. 21) Add VLAN packet scheduler action, from Jiri Pirko. 22) Support configurable RSS hash functions via ethtool, from Eyal Perry. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits) Fix race condition between vxlan_sock_add and vxlan_sock_release net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header net/mlx4: Add support for A0 steering net/mlx4: Refactor QUERY_PORT net/mlx4_core: Add explicit error message when rule doesn't meet configuration net/mlx4: Add A0 hybrid steering net/mlx4: Add mlx4_bitmap zone allocator net/mlx4: Add a check if there are too many reserved QPs net/mlx4: Change QP allocation scheme net/mlx4_core: Use tasklet for user-space CQ completion events net/mlx4_core: Mask out host side virtualization features for guests net/mlx4_en: Set csum level for encapsulated packets be2net: Export tunnel offloads only when a VxLAN tunnel is created gianfar: Fix dma check map error when DMA_API_DEBUG is enabled cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call net: fec: only enable mdio interrupt before phy device link up net: fec: clear all interrupt events to support i.MX6SX net: fec: reset fep link status in suspend function net: sock: fix access via invalid file descriptor net: introduce helper macro for_each_cmsghdr ...
| * | net, lib: kill arch_fast_hash library bitsDaniel Borkmann2014-12-101-1/+0
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As there are now no remaining users of arch_fast_hash(), lets kill it entirely. This basically reverts commit 71ae8aac3e19 ("lib: introduce arch optimized hash library") and follow-up work, that is f.e., commit 237217546d44 ("lib: hash: follow-up fixups for arch hash"), commit e3fec2f74f7f ("lib: Add missing arch generic-y entries for asm-generic/hash.h") and last but not least commit 6a02652df511 ("perf tools: Fix include for non x86 architectures"). Cc: Francesco Fusco <fusco@ntop.org> Cc: Thomas Graf <tgraf@suug.ch> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge tag 'asm-generic-for-linus' of ↵Linus Torvalds2014-12-091-2/+0
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic asm/io.h rewrite from Arnd Bergmann: "While there normally is no reason to have a pull request for asm-generic but have all changes get merged through whichever tree needs them, I do have a series for 3.19. There are two sets of patches that change significant portions of asm/io.h, and this branch contains both in order to resolve the conflicts: - Will Deacon has done a set of patches to ensure that all architectures define {read,write}{b,w,l,q}_relaxed() functions or get them by including asm-generic/io.h. These functions are commonly used on ARM specific drivers to avoid expensive L2 cache synchronization implied by the normal {read,write}{b,w,l,q}, but we need to define them on all architectures in order to share the drivers across architectures and to enable CONFIG_COMPILE_TEST configurations for them - Thierry Reding has done an unrelated set of patches that extends the asm-generic/io.h file to the degree necessary to make it useful on ARM64 and potentially other architectures" * tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (29 commits) ARM64: use GENERIC_PCI_IOMAP sparc: io: remove duplicate relaxed accessors on sparc32 ARM: sa11x0: Use void __iomem * in MMIO accessors arm64: Use include/asm-generic/io.h ARM: Use include/asm-generic/io.h asm-generic/io.h: Implement generic {read,write}s*() asm-generic/io.h: Reconcile I/O accessor overrides /dev/mem: Use more consistent data types Change xlate_dev_{kmem,mem}_ptr() prototypes ARM: ixp4xx: Properly override I/O accessors ARM: ixp4xx: Fix build with IXP4XX_INDIRECT_PCI ARM: ebsa110: Properly override I/O accessors ARC: Remove redundant PCI_IOBASE declaration documentation: memory-barriers: clarify relaxed io accessor semantics x86: io: implement dummy relaxed accessor macros for writes tile: io: implement dummy relaxed accessor macros for writes sparc: io: implement dummy relaxed accessor macros for writes powerpc: io: implement dummy relaxed accessor macros for writes parisc: io: implement dummy relaxed accessor macros for writes mn10300: io: implement dummy relaxed accessor macros for writes ...
| * ARC: Remove redundant PCI_IOBASE declarationThierry Reding2014-11-101-2/+0
| | | | | | | | | | | | | | | | ARC's asm/io.h includes the asm-generic/io.h which already defines the PCI_IOBASE variable in exactly the same way, so it can be dropped from the architecture specific header. Signed-off-by: Thierry Reding <treding@nvidia.com>
* | Merge tag 'remove-weak-declarations' of ↵Linus Torvalds2014-10-231-5/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull weak function declaration removal from Bjorn Helgaas: "The "weak" attribute is commonly used for the default version of a function, where an architecture can override it by providing a strong version. Some header file declarations included the "weak" attribute. That's error-prone because it causes every implementation to be weak, with no strong version at all, and the linker chooses one based on link order. What we want is the "weak" attribute only on the *definition* of the default implementation. These changes remove "weak" from the declarations, leaving it on the default definitions" * tag 'remove-weak-declarations' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: uprobes: Remove "weak" from function declarations memory-hotplug: Remove "weak" from memory_block_size_bytes() declaration kgdb: Remove "weak" from kgdb_arch_pc() declaration ARC: kgdb: generic kgdb_arch_pc() suffices vmcore: Remove "weak" from function declarations clocksource: Remove "weak" from clocksource_default_clock() declaration x86, intel-mid: Remove "weak" from function declarations audit: Remove "weak" from audit_classify_compat_syscall() declaration
| * | ARC: kgdb: generic kgdb_arch_pc() sufficesVineet Gupta2014-10-221-5/+0
| |/ | | | | | | | | | | | | The ARC version of kgdb_arch_pc() is identical to the generic version in kernel/debug/debug_core.c. Drop the ARC version so we use the generic one. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | Merge tag 'arc-3.18-rc1' of ↵Linus Torvalds2014-10-2137-437/+265
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC updates from Vineet Gupta: "Sorry for the late pull request. Current stuff was ready for a while but I was hoping to squeeze in support for almost ready ARC SDP platform (and avoid a 2nd pull request), however it seems there are still some loose ends which warrant more time. - Platform code reduction/moving-up (TB10X no longer needs any callbacks) - updated boot printing - kgdb update for arc gdb 7.5 - bug fixes (some marked for stable) - more code refactoring/consolidation" * tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: boot: cpu feature print enhancements ARC: boot: consolidate cross-checking of h/w and s/w ARC: unbork FPU save/restore ARC: remove extraneous __KERNEL__ guards ARC: Update order of registers in KGDB to match GDB 7.5 ARC: Remove unneeded Kconfig entry NO_DMA ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG)) ARC: refactoring: reduce the scope of some local vars ARC: remove gcc mpy heuristics ARC: RIP @running_on_hw ARC: Update comments about uncached address space ARC: rename kconfig option for unaligned emulation ARC: [nsimosci] Allow "headless" models to boot ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 ARC: [arcfpga] Remove more dead code ARC: [plat*] move code out of .init_machine into common ARC: [arcfpga] consolidate machine description, DT ARC: Allow SMP kernel to build/boot on UP-only infrastructure
| * ARC: boot: cpu feature print enhancementsVineet Gupta2014-10-134-138/+176
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: boot: consolidate cross-checking of h/w and s/wVineet Gupta2014-10-131-29/+15
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: unbork FPU save/restoreVineet Gupta2014-10-132-8/+9
| | | | | | | | | | | | Fixes: 2ab402dfd65d15a4b2 "ARC: make start_thread() out-of-line" CC: <stable@vger.kernel.org> #3.16 Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: remove extraneous __KERNEL__ guardsVineet Gupta2014-10-139-35/+0
| | | | | | | | | | Verified by doing make headers_install as none of these files are exported to userspace
| * ARC: Update order of registers in KGDB to match GDB 7.5Anton Kolesov2014-10-131-14/+18
| | | | | | | | | | | | | | | | | | | | Order of registers has changed in GDB moving from 6.8 to 7.5. This patch updates KGDB to work properly with GDB 7.5, though makes it incompatible with 6.8. Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
| * ARC: Remove unneeded Kconfig entry NO_DMAPaul Bolle2014-10-131-3/+0
| | | | | | | | | | | | | | | | | | Architectures only need a Kconfig entry for NO_DMA if it is possible that its value will be 'y'. For arc its value will always be 'n', making it pointless. Remove it. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG))Vineet Gupta2014-10-131-4/+3
| | | | | | | | | | | | | | ARC specific version (doesn't panic) still makes sense so that generic code calling BUG doesn't panic and helps debugging more Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: refactoring: reduce the scope of some local varsVineet Gupta2014-10-131-9/+5
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: remove gcc mpy heuristicsVineet Gupta2014-10-131-16/+1
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: RIP @running_on_hwVineet Gupta2014-10-133-13/+0
| | | | | | | | | | | | | | | | | | | | * No active users of this flag anymore * flag itself was no longer usable with new simualtor which acts just like hardware, not providing the special chip-id = 0xffff which good old ISS used to do. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: Update comments about uncached address spaceVineet Gupta2014-10-131-1/+1
| | | | | | | | | | Suggested-by: Noam Camus <noamc@ezchip.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: rename kconfig option for unaligned emulationVineet Gupta2014-10-134-5/+5
| | | | | | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: [nsimosci] Allow "headless" models to bootVineet Gupta2014-10-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | There are certain test configuration of virtual platform which don't have any real console device (uart/pgu). So add tty0 as a fallback console device to allow system to boot and be accessible via telnet Otherwise with ttyS0 as only console, but 8250 disabled in kernel build, init chokes. Reported-by: Anton Kolesov <akolesov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
| * ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509Paul Bolle2014-10-134-14/+0
| | | | | | | | | | | | | | | | | | | | | | Commit c00bfd974fb0 ("ARC: [arcfpga] Get rid of legacy BVCI latency unit support") removed the Kconfig symbol ARC_HAS_BVCI_LAT_UNIT. And that symbol's entry was the only place were the symbols ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 were used. So ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 can be removed too. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: [arcfpga] Remove more dead codeVineet Gupta2014-10-134-76/+3
| | | | | | | | | | | | | | specifically after switching to generic early arc uart, whole bunch of code is no longer needed Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: [plat*] move code out of .init_machine into commonVineet Gupta2014-10-135-27/+10
| | | | | | | | | | | | | | All the platforms do the same thing in init_machine callback so move it out of callback into caller of callback Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: [arcfpga] consolidate machine description, DTVineet Gupta2014-10-133-30/+7
| | | | | | | | | | | | | | * AA4/ML509 have same machine descriptions * Rename simulation machine description Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| * ARC: Allow SMP kernel to build/boot on UP-only infrastructureVineet Gupta2014-09-275-16/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | In light of recent SNAFU with SMP build, allow simple platform to build as SMP but run UP. * Remove the dependence on simulation SMP extension to enable quick build/test iterations of SMP kernel. * In absence of platform SMP registration, prevent the NULL smp feature name from borkign the system Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | Merge branch 'locking-arch-for-linus' of ↵Linus Torvalds2014-10-131-121/+63
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull arch atomic cleanups from Ingo Molnar: "This is a series kept separate from the main locking tree, which cleans up and improves various details in the atomics type handling: - Remove the unused atomic_or_long() method - Consolidate and compress atomic ops implementations between architectures, to reduce linecount and to make it easier to add new ops. - Rewrite generic atomic support to only require cmpxchg() from an architecture - generate all other methods from that" * 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() locking, mips: Fix atomics locking, sparc64: Fix atomics locking,arch: Rewrite generic atomic support locking,arch,xtensa: Fold atomic_ops locking,arch,sparc: Fold atomic_ops locking,arch,sh: Fold atomic_ops locking,arch,powerpc: Fold atomic_ops locking,arch,parisc: Fold atomic_ops locking,arch,mn10300: Fold atomic_ops locking,arch,mips: Fold atomic_ops locking,arch,metag: Fold atomic_ops locking,arch,m68k: Fold atomic_ops locking,arch,m32r: Fold atomic_ops locking,arch,ia64: Fold atomic_ops locking,arch,hexagon: Fold atomic_ops locking,arch,cris: Fold atomic_ops locking,arch,avr32: Fold atomic_ops locking,arch,arm64: Fold atomic_ops locking,arch,arm: Fold atomic_ops ...
| * | locking,arch,arc: Fold atomic_opsPeter Zijlstra2014-08-141-121/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many of the atomic op implementations are the same except for one instruction; fold the lot into a few CPP macros and reduce LoC. This also prepares for easy addition of new ops. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Vineet Gupta <vgupta@synopsys.com> Link: http://lkml.kernel.org/r/20140508135851.886055622@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | irq_work: Introduce arch_irq_work_has_interrupt()Peter Zijlstra2014-09-131-0/+1
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | ARC: [mm] Fix compilation breakageNoam Camus2014-09-031-1/+1
| | | | | | | | | | | | | | | | | | Structure name and variable name were erroneously interchanged Signed-off-by: Noam Camus <noamc@ezchip.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> [ Also removed pointless cast from "void *". - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 12:10:51 +0000