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| * net: Define SCM_TIMESTAMPING_PKTINFO on all architectures.David S. Miller2017-05-211-0/+2
| | | | | | | | | | | | | | | | A definition was only provided for asm-generic/socket.h using platforms, define it for the others as well Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge tag 'tty-4.13-rc1' of ↵Linus Torvalds2017-07-031-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial updates from Greg KH: "Here is the large tty/serial patchset for 4.13-rc1. A lot of tty and serial driver updates are in here, along with some fixups for some __get/put_user usages that were reported. Nothing huge, just lots of development by a number of different developers, full details in the shortlog. All of these have been in linux-next for a while" * tag 'tty-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (71 commits) tty: serial: lpuart: add a more accurate baud rate calculation method tty: serial: lpuart: add earlycon support for imx7ulp tty: serial: lpuart: add imx7ulp support dt-bindings: serial: fsl-lpuart: add i.MX7ULP support tty: serial: lpuart: add little endian 32 bit register support tty: serial: lpuart: refactor lpuart32_{read|write} prototype tty: serial: lpuart: introduce lpuart_soc_data to represent SoC property serial: imx-serial - move DMA buffer configuration to DT serial: imx: Enable RTSD only when needed serial: imx: Remove unused members from imx_port struct serial: 8250: 8250_omap: Fix race b/w dma completion and RX timeout serial: 8250: Fix THRE flag usage for CAP_MINI tty/serial: meson_uart: update to stable bindings dt-bindings: serial: Add bindings for the Amlogic Meson UARTs serial: Delete dead code for CIR serial ports serial: sirf: make of_device_ids const serial/mpsc: switch to dma_alloc_attrs tty: serial: Add Actions Semi Owl UART earlycon dt-bindings: serial: Document Actions Semi Owl UARTs tty/serial: atmel: make the driver DT only ...
| * | tty: add TIOCGPTPEER ioctlAleksa Sarai2017-06-091-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When opening the slave end of a PTY, it is not possible for userspace to safely ensure that /dev/pts/$num is actually a slave (in cases where the mount namespace in which devpts was mounted is controlled by an untrusted process). In addition, there are several unresolvable race conditions if userspace were to attempt to detect attacks through stat(2) and other similar methods [in addition it is not clear how userspace could detect attacks involving FUSE]. Resolve this by providing an interface for userpace to safely open the "peer" end of a PTY file descriptor by using the dentry cached by devpts. Since it is not possible to have an open master PTY without having its slave exposed in /dev/pts this interface is safe. This interface currently does not provide a way to get the master pty (since it is not clear whether such an interface is safe or even useful). Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Valentin Rothberg <vrothberg@suse.com> Signed-off-by: Aleksa Sarai <asarai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* / signal: Remove non-uapi <asm/siginfo.h>Christoph Hellwig2017-06-041-0/+1
|/ | | | | | | | | | | | | | | | | | | | By moving the kernel side __SI_* defintions right next to the userspace ones we can kill the non-uapi versions of <asm/siginfo.h> include include/asm-generic/siginfo.h and untangle the unholy mess of includes. [ tglx: Removed uapi/asm/siginfo.h from m32r, microblaze, mn10300 and score ] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-ia64@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: sparclinux@vger.kernel.org Cc: "David S. Miller" <davem@davemloft.net> Link: http://lkml.kernel.org/r/20170603190102.28866-6-hch@lst.de
* uapi: export all headers under uapi directoriesNicolas Dichtel2017-05-111-23/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regularly, when a new header is created in include/uapi/, the developer forgets to add it in the corresponding Kbuild file. This error is usually detected after the release is out. In fact, all headers under uapi directories should be exported, thus it's useless to have an exhaustive list. After this patch, the following files, which were not exported, are now exported (with make headers_install_all): asm-arc/kvm_para.h asm-arc/ucontext.h asm-blackfin/shmparam.h asm-blackfin/ucontext.h asm-c6x/shmparam.h asm-c6x/ucontext.h asm-cris/kvm_para.h asm-h8300/shmparam.h asm-h8300/ucontext.h asm-hexagon/shmparam.h asm-m32r/kvm_para.h asm-m68k/kvm_para.h asm-m68k/shmparam.h asm-metag/kvm_para.h asm-metag/shmparam.h asm-metag/ucontext.h asm-mips/hwcap.h asm-mips/reg.h asm-mips/ucontext.h asm-nios2/kvm_para.h asm-nios2/ucontext.h asm-openrisc/shmparam.h asm-parisc/kvm_para.h asm-powerpc/perf_regs.h asm-sh/kvm_para.h asm-sh/ucontext.h asm-tile/shmparam.h asm-unicore32/shmparam.h asm-unicore32/ucontext.h asm-x86/hwcap2.h asm-xtensa/kvm_para.h drm/armada_drm.h drm/etnaviv_drm.h drm/vgem_drm.h linux/aspeed-lpc-ctrl.h linux/auto_dev-ioctl.h linux/bcache.h linux/btrfs_tree.h linux/can/vxcan.h linux/cifs/cifs_mount.h linux/coresight-stm.h linux/cryptouser.h linux/fsmap.h linux/genwqe/genwqe_card.h linux/hash_info.h linux/kcm.h linux/kcov.h linux/kfd_ioctl.h linux/lightnvm.h linux/module.h linux/nbd-netlink.h linux/nilfs2_api.h linux/nilfs2_ondisk.h linux/nsfs.h linux/pr.h linux/qrtr.h linux/rpmsg.h linux/sched/types.h linux/sed-opal.h linux/smc.h linux/smc_diag.h linux/stm.h linux/switchtec_ioctl.h linux/vfio_ccw.h linux/wil6210_uapi.h rdma/bnxt_re-abi.h Note that I have removed from this list the files which are generated in every exported directories (like .install or .install.cmd). Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all subdirs with a pure makefile command. For the record, note that exported files for asm directories are a mix of files listed by: - include/uapi/asm-generic/Kbuild.asm; - arch/<arch>/include/uapi/asm/Kbuild; - arch/<arch>/include/asm/Kbuild. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* Merge tag 'xtensa-20170507' of git://github.com/jcmvbkbc/linux-xtensaLinus Torvalds2017-05-081-40/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa updates from Max Filippov: - clearly mark references to spilled register locations with SPILL_SLOT macros - clean up xtensa ptrace: use generic tracehooks, move internal kernel definitions from uapi/asm to asm, make locally-used functions static, fix code style and alignment - use command line parameters passed to ISS as kernel command line. * tag 'xtensa-20170507' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: clean up access to spilled registers locations xtensa: use generic tracehooks xtensa: move internal ptrace definitions from uapi/asm to asm xtensa: clean up xtensa/kernel/ptrace.c xtensa: drop unused fast_io_protect function xtensa: use ITLB_HIT_BIT instead of hardcoded number xtensa: ISS: update kernel command line in platform_setup xtensa: ISS: add argc/argv simcall definitions xtensa: ISS: cleanup setup.c
| * xtensa: move internal ptrace definitions from uapi/asm to asmMax Filippov2017-05-011-40/+0
| | | | | | | | | | | | | | | | Stack frame layout diagram, kernel stack size and exception_handlers offsets are used by the kernel and are not supposed to be accessible to userspace. Move these definitions from uapi/asm/ptrace.h to asm/ptrace.h Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | New getsockopt option to get socket cookieChenbo Feng2017-04-081-0/+2
| | | | | | | | | | | | | | | | | | | | | | Introduce a new getsockopt operation to retrieve the socket cookie for a specific socket based on the socket fd. It returns a unique non-decreasing cookie for each socket. Tested: https://android-review.googlesource.com/#/c/358163/ Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Chenbo Feng <fengc@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2017-04-061-1/+4
|\| | | | | | | | | | | | | Mostly simple cases of overlapping changes (adding code nearby, a function whose name changes, for example). Signed-off-by: David S. Miller <davem@davemloft.net>
| * xtensa: wire up statx system callMax Filippov2017-03-311-1/+4
| | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | net: Introduce SO_INCOMING_NAPI_IDSridhar Samudrala2017-03-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This socket option returns the NAPI ID associated with the queue on which the last frame is received. This information can be used by the apps to split the incoming flows among the threads based on the Rx queue on which they are received. If the NAPI ID actually represents a sender_cpu then the value is ignored and 0 is returned. Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sock: introduce SO_MEMINFO getsockoptJosh Hunt2017-03-221-0/+2
|/ | | | | | | | | | | | | | | | Allows reading of SK_MEMINFO_VARS via socket option. This way an application can get all meminfo related information in single socket option call instead of multiple calls. Adds helper function, sk_get_meminfo(), and uses that for both getsockopt and sock_diag_put_meminfo(). Suggested by Eric Dumazet. Signed-off-by: Josh Hunt <johunt@akamai.com> Reviewed-by: Jason Baron <jbaron@akamai.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tcp: SOF_TIMESTAMPING_OPT_STATS option for SO_TIMESTAMPINGFrancis Yan2016-11-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch exports the sender chronograph stats via the socket SO_TIMESTAMPING channel. Currently we can instrument how long a particular application unit of data was queued in TCP by tracking SOF_TIMESTAMPING_TX_SOFTWARE and SOF_TIMESTAMPING_TX_SCHED. Having these sender chronograph stats exported simultaneously along with these timestamps allow further breaking down the various sender limitation. For example, a video server can tell if a particular chunk of video on a connection takes a long time to deliver because TCP was experiencing small receive window. It is not possible to tell before this patch without packet traces. To prepare these stats, the user needs to set SOF_TIMESTAMPING_OPT_STATS and SOF_TIMESTAMPING_OPT_TSONLY flags while requesting other SOF_TIMESTAMPING TX timestamps. When the timestamps are available in the error queue, the stats are returned in a separate control message of type SCM_TIMESTAMPING_OPT_STATS, in a list of TLVs (struct nlattr) of types: TCP_NLA_BUSY_TIME, TCP_NLA_RWND_LIMITED, TCP_NLA_SNDBUF_LIMITED. Unit is microsecond. Signed-off-by: Francis Yan <francisyyan@gmail.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xtensa: wire up new pkey_{mprotect,alloc,free} syscallsMax Filippov2016-11-141-1/+8
| | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* Merge branch 'mm-pkeys-for-linus' of ↵Linus Torvalds2016-10-101-0/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull protection keys syscall interface from Thomas Gleixner: "This is the final step of Protection Keys support which adds the syscalls so user space can actually allocate keys and protect memory areas with them. Details and usage examples can be found in the documentation. The mm side of this has been acked by Mel" * 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pkeys: Update documentation x86/mm/pkeys: Do not skip PKRU register if debug registers are not used x86/pkeys: Fix pkeys build breakage for some non-x86 arches x86/pkeys: Add self-tests x86/pkeys: Allow configuration of init_pkru x86/pkeys: Default to a restrictive init PKRU pkeys: Add details of system call use to Documentation/ generic syscalls: Wire up memory protection keys syscalls x86: Wire up protection keys system calls x86/pkeys: Allocation/free syscalls x86/pkeys: Make mprotect_key() mask off additional vm_flags mm: Implement new pkey_mprotect() system call x86/pkeys: Add fault handling for PF_PK page fault bit
| * x86/pkeys: Allocation/free syscallsDave Hansen2016-09-091-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds two new system calls: int pkey_alloc(unsigned long flags, unsigned long init_access_rights) int pkey_free(int pkey); These implement an "allocator" for the protection keys themselves, which can be thought of as analogous to the allocator that the kernel has for file descriptors. The kernel tracks which numbers are in use, and only allows operations on keys that are valid. A key which was not obtained by pkey_alloc() may not, for instance, be passed to pkey_mprotect(). These system calls are also very important given the kernel's use of pkeys to implement execute-only support. These help ensure that userspace can never assume that it has control of a key unless it first asks the kernel. The kernel does not promise to preserve PKRU (right register) contents except for allocated pkeys. The 'init_access_rights' argument to pkey_alloc() specifies the rights that will be established for the returned pkey. For instance: pkey = pkey_alloc(flags, PKEY_DENY_WRITE); will allocate 'pkey', but also sets the bits in PKRU[1] such that writing to 'pkey' is already denied. The kernel does not prevent pkey_free() from successfully freeing in-use pkeys (those still assigned to a memory range by pkey_mprotect()). It would be expensive to implement the checks for this, so we instead say, "Just don't do it" since sane software will never do it anyway. Any piece of userspace calling pkey_alloc() needs to be prepared for it to fail. Why? pkey_alloc() returns the same error code (ENOSPC) when there are no pkeys and when pkeys are unsupported. They can be unsupported for a whole host of reasons, so apps must be prepared for this. Also, libraries or LD_PRELOADs might steal keys before an application gets access to them. This allocation mechanism could be implemented in userspace. Even if we did it in userspace, we would still need additional user/kernel interfaces to tell userspace which keys are being used by the kernel internally (such as for execute-only mappings). Having the kernel provide this facility completely removes the need for these additional interfaces, or having an implementation of this in userspace at all. Note that we have to make changes to all of the architectures that do not use mman-common.h because we use the new PKEY_DENY_ACCESS/WRITE macros in arch-independent code. 1. PKRU is the Protection Key Rights User register. It is a usermode-accessible register that controls whether writes and/or access to each individual pkey is allowed or denied. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Cc: linux-arch@vger.kernel.org Cc: Dave Hansen <dave@sr71.net> Cc: arnd@arndb.de Cc: linux-api@vger.kernel.org Cc: linux-mm@kvack.org Cc: luto@kernel.org Cc: akpm@linux-foundation.org Cc: torvalds@linux-foundation.org Link: http://lkml.kernel.org/r/20160729163015.444FE75F@viggo.jf.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | xtensa: wire up new syscallsMax Filippov2016-07-311-1/+14
| | | | | | | | | | | | Wire up userfaultfd, membarrier, mlock2, copy_file_range, preadv2, pwritev2 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | xtensa: add alternative kernel memory layoutsMax Filippov2016-07-241-1/+2
|/ | | | | | | | | | | | | | | MMUv3 is able to support low memory bigger than 128MB. Implement 256MB and 512MB KSEG layouts: - add Kconfig selector for KSEG layout; - add KSEG base address, size and alignment definitions to arch/xtensa/include/asm/kmem_layout.h; - use new definitions in TLB initialization; - add build time memory map consistency checks. See Documentation/xtensa/mmu.txt for the details of new memory layouts. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* Merge tag 'xtensa-next-20160320' of git://github.com/czankel/xtensa-linuxLinus Torvalds2016-03-201-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa updates from Chris Zankel: "Xtensa improvements for 4.6: - control whether perf IRQ is treated as NMI from Kconfig - implement ioremap for regions outside KIO segment - fix ISS serial port behaviour when EOF is reached - fix preemption in {clear,copy}_user_highpage - fix endianness issues for XTFPGA devices, big-endian cores are now fully functional - clean up debug infrastructure and add support for hardware breakpoints and watchpoints - add processor configurations for Three Core HiFi-2 MX and HiFi3 cpus" * tag 'xtensa-next-20160320' of git://github.com/czankel/xtensa-linux: xtensa: add test_kc705_hifi variant xtensa: add Three Core HiFi-2 MX Variant. xtensa: support hardware breakpoints/watchpoints xtensa: use context structure for debug exceptions xtensa: remove remaining non-functional KGDB bits xtensa: clear all DBREAKC registers on start xtensa: xtfpga: fix earlycon endianness xtensa: xtfpga: fix i2c controller register width and endianness xtensa: xtfpga: fix ethernet controller endianness xtensa: xtfpga: fix serial port register width and endianness xtensa: define CONFIG_CPU_{BIG,LITTLE}_ENDIAN xtensa: fix preemption in {clear,copy}_user_highpage xtensa: ISS: don't hang if stdin EOF is reached xtensa: support ioremap for memory outside KIO region xtensa: use XTENSA_INT_LEVEL macro in asm/timex.h xtensa: make fake NMI configurable
| * xtensa: support hardware breakpoints/watchpointsMax Filippov2016-03-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use perf framework to manage hardware instruction and data breakpoints. Add two new ptrace calls: PTRACE_GETHBPREGS and PTRACE_SETHBPREGS to query and set instruction and data breakpoints. Address bit 0 choose instruction (0) or data (1) break register, bits 31..1 are the register number. Both calls transfer two 32-bit words: address (0) and control (1). Instruction breakpoint contorl word is 0 to clear breakpoint, 1 to set. Data breakpoint control word bit 31 is 'trigger on store', bit 30 is 'trigger on load, bits 29..0 are length. Length 0 is used to clear a breakpoint. To set a breakpoint length must be a power of 2 in the range 1..64 and the address must be length-aligned. Introduce new thread_info flag: TIF_DB_DISABLED. Set it if debug exception is raised by the kernel code accessing watched userspace address and disable corresponding data breakpoint. On exit to userspace check that flag and, if set, restore all data breakpoints. Handle debug exceptions raised with PS.EXCM set. This may happen when window overflow/underflow handler or fast exception handler hits data breakpoint, in which case save and disable all data breakpoints, single-step faulting instruction and restore data breakpoints. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | net: Facility to report route quality of connected socketsTom Herbert2016-02-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch add the SO_CNX_ADVICE socket option (setsockopt only). The purpose is to allow an application to give feedback to the kernel about the quality of the network path for a connected socket. The value argument indicates the type of quality report. For this initial patch the only supported advice is a value of 1 which indicates "bad path, please reroute"-- the action taken by the kernel is to call dst_negative_advice which will attempt to choose a different ECMP route, reset the TX hash for flow label and UDP source port in encapsulation, etc. This facility should be useful for connected UDP sockets where only the application can provide any feedback about path quality. It could also be useful for TCP applications that have additional knowledge about the path outside of the normal TCP control loop. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mm: arch: remove duplicate definitions of MADV_FREEGuenter Roeck2016-01-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commits 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all architectures") and ef58978f1eaa ("mm: define MADV_FREE for some arches") both defined MADV_FREE, but did not use the same values. This results in build errors such as ./arch/alpha/include/uapi/asm/mman.h:53:0: error: "MADV_FREE" redefined ./arch/alpha/include/uapi/asm/mman.h:50:0: note: this is the location of the previous definition for the affected architectures. Fixes: 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all architectures") Fixes: ef58978f1eaa ("mm: define MADV_FREE for some arches") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: Chen Gang <gang.chen.5i5j@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Acked-by: Helge Deller <deller@gmx.de> [parisc] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all ↵Chen Gang2016-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | architectures For uapi, need try to let all macros have same value, and MADV_FREE is added into main branch recently, so need redefine MADV_FREE for it. At present, '8' can be shared with all architectures, so redefine it to '8'. [sudipm.mukherjee@gmail.com: correct uniform value of MADV_FREE] Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Hugh Dickins <hughd@google.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Roland Dreier <roland@kernel.org> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: David S. Miller <davem@davemloft.net> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Shaohua Li <shli@kernel.org> Cc: <yalin.wang2010@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Jason Evans <je@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mika Penttil <mika.penttila@nextfour.com> Cc: Rik van Riel <riel@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Shaohua Li <shli@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mm: define MADV_FREE for some archesMinchan Kim2016-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most architectures use asm-generic, but alpha, mips, parisc, xtensa need their own definitions. This patch defines MADV_FREE for them so it should fix build break for their architectures. Maybe, I should split and feed pieces to arch maintainers but included here for mmotm convenience. [gang.chen.5i5j@gmail.com: let MADV_FREE have same value for all architectures] Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Chris Zankel <chris@zankel.net> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Shaohua Li <shli@kernel.org> Cc: <yalin.wang2010@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Gang <gang.chen.5i5j@gmail.com> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: David S. Miller <davem@davemloft.net> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Evans <je@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Matt Turner <mattst88@gmail.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Mika Penttil <mika.penttila@nextfour.com> Cc: Rik van Riel <riel@redhat.com> Cc: Roland Dreier <roland@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Shaohua Li <shli@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPFCraig Gallek2016-01-041-0/+3
|/ | | | | | | | | | | | | | Expose socket options for setting a classic or extended BPF program for use when selecting sockets in an SO_REUSEPORT group. These options can be used on the first socket to belong to a group before bind or on any socket in the group after bind. This change includes refactoring of the existing sk_filter code to allow reuse of the existing BPF filter validation checks. Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* mm: mlock: add mlock flags to enable VM_LOCKONFAULT usageEric B Munson2015-11-051-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous patch introduced a flag that specified pages in a VMA should be placed on the unevictable LRU, but they should not be made present when the area is created. This patch adds the ability to set this state via the new mlock system calls. We add MLOCK_ONFAULT for mlock2 and MCL_ONFAULT for mlockall. MLOCK_ONFAULT will set the VM_LOCKONFAULT modifier for VM_LOCKED. MCL_ONFAULT should be used as a modifier to the two other mlockall flags. When used with MCL_CURRENT, all current mappings will be marked with VM_LOCKED | VM_LOCKONFAULT. When used with MCL_FUTURE, the mm->def_flags will be marked with VM_LOCKED | VM_LOCKONFAULT. When used with both MCL_CURRENT and MCL_FUTURE, all current mappings and mm->def_flags will be marked with VM_LOCKED | VM_LOCKONFAULT. Prior to this patch, mlockall() will unconditionally clear the mm->def_flags any time it is called without MCL_FUTURE. This behavior is maintained after adding MCL_ONFAULT. If a call to mlockall(MCL_FUTURE) is followed by mlockall(MCL_CURRENT), the mm->def_flags will be cleared and new VMAs will be unlocked. This remains true with or without MCL_ONFAULT in either mlockall() invocation. munlock() will unconditionally clear both vma flags. munlockall() unconditionally clears for VMA flags on all VMAs and in the mm->def_flags field. Signed-off-by: Eric B Munson <emunson@akamai.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xtensa: provide __NR_sync_file_range2 instead of __NR_sync_file_rangeMax Filippov2015-03-041-1/+1
| | | | | | | | | | | | | xtensa actually uses sync_file_range2 implementation, so it should define __NR_sync_file_range2 as other architectures that use that function. That fixes userspace interface (that apparently never worked) and avoids special-casing xtensa in libc implementations. See the thread ending at http://lists.busybox.net/pipermail/uclibc/2015-February/048833.html for more details. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: wire bpf and execveat syscallsMax Filippov2015-03-041-1/+5
| | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* Merge tag 'xtensa-next-20141215' of git://github.com/czankel/xtensa-linuxLinus Torvalds2014-12-161-0/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull Xtensa fixes from Chris Zankel: - fix nommu support - remove s6000 variant and s6105 platform - fix permissions for kmapped pages so that copy_to_user_page works with them - add power management menu to Kconfig to allow use of runtime PM - disable linker optimizations because of a linker bug - fix sparse error * tag 'xtensa-next-20141215' of git://github.com/czankel/xtensa-linux: xtensa: disable link optimization xtensa/uaccess: fix sparse errors xtensa: fix kmap_prot definition xtensa: add power management menu to Kconfig xtensa: remove s6000 variant and s6105 platform xtensa: make PLATFORM_DEFAULT_MEM parameters configurable xtensa: nommu: clean up memory map dump xtensa: nommu: reserve memory below PLATFORM_DEFAULT_MEM_START xtensa: nommu: set up cache and atomctl in initialize_mmu xtensa: move vecbase SR initialization to _startup xtensa: nommu: fix uImage load address xtensa: nommu: fix load address definitions xtensa: nommu: fix Image.elf reset code and ld script xtensa: nommu: add MMU dependency to DEBUG_TLB_SANITY xtensa: nommu: don't build most of the cache flushing code xtensa: nommu: don't provide arch_get_unmapped_area xtensa: nommu: provide MAP_UNINITIALIZED definition xtensa: nommu: provide _PAGE_CHG_MASK definition xtensa: nommu: provide __invalidate_dcache_page_alias stub xtensa: nommu: move init_mmu stub to nommu_context.h
| * Merge tag 'xtensa-for-next-20141021-2' of ↵Chris Zankel2014-11-101-0/+6
| |\ | | | | | | | | | | | | | | | | | | | | | | | | git://github.com/jcmvbkbc/linux-xtensa into for_next Xtensa improvements for 3.18: - fix nommu support; - remove s6000 variant and s6105 platform.
| | * xtensa: nommu: provide MAP_UNINITIALIZED definitionMax Filippov2014-10-211-0/+6
| | | | | | | | | | | | | | | | | | | | | Add MAP_UNINITIALIZED to xtensa version of mman.h to keep mm/nommu.c happy. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* | | net: sock: allow eBPF programs to be attached to socketsAlexei Starovoitov2014-12-051-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | introduce new setsockopt() command: setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd, sizeof(prog_fd)) where prog_fd was received from syscall bpf(BPF_PROG_LOAD, attr, ...) and attr->prog_type == BPF_PROG_TYPE_SOCKET_FILTER setsockopt() calls bpf_prog_get() which increments refcnt of the program, so it doesn't get unloaded while socket is using the program. The same eBPF program can be attached to multiple sockets. User task exit automatically closes socket which calls sk_filter_uncharge() which decrements refcnt of eBPF program Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2014-11-141-2/+10
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/chelsio/cxgb4vf/sge.c drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c sge.c was overlapping two changes, one to use the new __dev_alloc_page() in net-next, and one to use s->fl_pg_order in net. ixgbe_phy.c was a set of overlapping whitespace changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge tag 'xtensa-for-next-20141021-1' of ↵Chris Zankel2014-10-231-2/+10
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://github.com/jcmvbkbc/linux-xtensa into for_next Xtensa improvements for 3.18: - add seccomp, getrandom, and memfd_create syscalls; - add defconfigs for KC705 and SMP LX200; - fix ISS and xtfpga Kconfig dependencies so that more randconfigs are buildable; - fix umount syscall; - implement pgprot_noncached.
| | * xtensa: re-wire umount syscall to sys_oldumountMax Filippov2014-10-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Userspace actually passes single parameter (path name) to the umount syscall, so new umount just fails. Fix it by requesting old umount syscall implementation and re-wiring umount to it. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| | * xtensa: add seccomp, getrandom, and memfd_create syscallsMax Filippov2014-10-061-1/+8
| | | | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| * | xtensa/uapi: Add definition of TIOC[SG]RS485Ricardo Ribalda Delgado2014-09-091-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | Commit: e676253b19b2d269cccf67fdb1592120a0cd0676 [3/21] serial/8250: Add support for RS485 IOCTLs, adds support for RS485 ioctls for 825_core on all the archs. Unfortunaltely the definition of TIOCSRS485 and TIOCGRS485 was missing on the ioctls.h file Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
* | net: introduce SO_INCOMING_CPUEric Dumazet2014-11-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Alternative to RPS/RFS is to use hardware support for multiple queues. Then split a set of million of sockets into worker threads, each one using epoll() to manage events on its own socket pool. Ideally, we want one thread per RX/TX queue/cpu, but we have no way to know after accept() or connect() on which queue/cpu a socket is managed. We normally use one cpu per RX queue (IRQ smp_affinity being properly set), so remembering on socket structure which cpu delivered last packet is enough to solve the problem. After accept(), connect(), or even file descriptor passing around processes, applications can use : int cpu; socklen_t len = sizeof(cpu); getsockopt(fd, SOL_SOCKET, SO_INCOMING_CPU, &cpu, &len); And use this information to put the socket into the right silo for optimal performance, as all networking stack should run on the appropriate cpu, without need to send IPI (RPS/RFS). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | xtensa/uapi: Add definition of TIOC[SG]RS485Ricardo Ribalda Delgado2014-09-091-0/+2
|/ | | | | | | | | | | Commit: e676253b19b2d269cccf67fdb1592120a0cd0676 [3/21] serial/8250: Add support for RS485 IOCTLs, adds support for RS485 ioctls for 825_core on all the archs. Unfortunaltely the definition of TIOCSRS485 and TIOCGRS485 was missing on the ioctls.h file Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* xtensa: add renameat2 syscallMiklos Szeredi2014-08-141-1/+4
| | | | | | Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: replace IOCTL code definitions with constantsMax Filippov2014-08-141-9/+10
| | | | | | | | | | | | | | | | | | | This fixes userspace code that builds on other architectures but fails on xtensa due to references to structures that other architectures don't refer to. E.g. this fixes the following issue with python-2.7.8: python-2.7.8/Modules/termios.c:861:25: error: invalid application of 'sizeof' to incomplete type 'struct serial_multiport_struct' {"TIOCSERGETMULTI", TIOCSERGETMULTI}, python-2.7.8/Modules/termios.c:870:25: error: invalid application of 'sizeof' to incomplete type 'struct serial_multiport_struct' {"TIOCSERSETMULTI", TIOCSERSETMULTI}, python-2.7.8/Modules/termios.c:900:24: error: invalid application of 'sizeof' to incomplete type 'struct tty_struct' {"TIOCTTYGSTRUCT", TIOCTTYGSTRUCT}, Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* xtensa: wire up sched_setattr and sched_getattr syscallsMax Filippov2014-02-211-1/+6
| | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
* net: introduce SO_BPF_EXTENSIONSMichal Sekletar2014-01-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | For user space packet capturing libraries such as libpcap, there's currently only one way to check which BPF extensions are supported by the kernel, that is, commit aa1113d9f85d ("net: filter: return -EINVAL if BPF_S_ANC* operation is not supported"). For querying all extensions at once this might be rather inconvenient. Therefore, this patch introduces a new option which can be used as an argument for getsockopt(), and allows one to obtain information about which BPF extensions are supported by the current kernel. As David Miller suggests, we do not need to define any bits right now and status quo can just return 0 in order to state that this versions supports SKF_AD_PROTOCOL up to SKF_AD_PAY_OFFSET. Later additions to BPF extensions need to add their bits to the bpf_tell_extensions() function, as documented in the comment. Signed-off-by: Michal Sekletar <msekleta@redhat.com> Cc: David Miller <davem@davemloft.net> Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: introduce SO_MAX_PACING_RATEEric Dumazet2013-09-281-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | As mentioned in commit afe4fd062416b ("pkt_sched: fq: Fair Queue packet scheduler"), this patch adds a new socket option. SO_MAX_PACING_RATE offers the application the ability to cap the rate computed by transport layer. Value is in bytes per second. u32 val = 1000000; setsockopt(sockfd, SOL_SOCKET, SO_MAX_PACING_RATE, &val, sizeof(val)); To be effectively paced, a flow must use FQ packet scheduler. Note that a packet scheduler takes into account the headers for its computations. The effective payload rate depends on MSS and retransmits if any. I chose to make this pacing rate a SOL_SOCKET option instead of a TCP one because this can be used by other protocols. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: rename busy poll socket op and globalsEliezer Tamir2013-07-101-1/+1
| | | | | | | | | | | | | Rename LL_SO to BUSY_POLL_SO Rename sysctl_net_ll_{read,poll} to sysctl_busy_{read,poll} Fix up users of these variables. Fix documentation for sysctl. a patch for the socket.7 man page will follow separately, because of limitations of my mail setup. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: add socket option for low latency pollingEliezer Tamir2013-06-171-0/+2
| | | | | | | | | adds a socket option for low latency polling. This allows overriding the global sysctl value with a per-socket one. Unexport sysctl_net_ll_poll since for now it's not needed in modules. Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: add option to enable error queue packets waking selectKeller, Jacob E2013-03-311-0/+2
| | | | | | | | | | | | | | | | | | | | | Currently, when a socket receives something on the error queue it only wakes up the socket on select if it is in the "read" list, that is the socket has something to read. It is useful also to wake the socket if it is in the error list, which would enable software to wait on error queue packets without waking up for regular data on the socket. The main use case is for receiving timestamped transmit packets which return the timestamp to the socket via the error queue. This enables an application to select on the socket for the error queue only instead of for the regular traffic. -v2- * Added the SO_SELECT_ERR_QUEUE socket option to every architechture specific file * Modified every socket poll function that checks error queue Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Cc: Jeffrey Kirsher <jeffrey.t.kirsher@intel.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Matthew Vick <matthew.vick@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linuxLinus Torvalds2013-02-262-11/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull xtensa update from Chris Zankel: "Added features: - add support for thread local storage (TLS) - add accept4 and finit_module syscalls - support medium-priority interrupts - add support for dc232c processor variant - support file-base simulated disk for ISS simulator Bug fixes: - fix return values returned by the str[n]cmp functions - avoid mmap cache aliasing - fix handling of 'windowed registers' in ptrace" * tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linux: xtensa: add accept4 syscall xtensa: add support for TLS xtensa: add missing include asm/uaccess.h to checksum.h xtensa: do not enable GENERIC_GPIO by default xtensa: complete ptrace handling of register windows xtensa: add support for oprofile xtensa: move spill_registers to traps.h xtensa: ISS: add host file-based simulated disk xtensa: fix str[n]cmp return value xtensa: avoid mmap cache aliasing xtensa: add finit_module syscall xtensa: pull signal definitions from signal-defs.h xtensa: fix ipc_parse_version selection xtensa: dispatch medium-priority interrupts xtensa: Add config files for Diamond 233L - Rev C processor variant xtensa: use new common dtc rule xtensa: rename prom_update_property to of_update_property
| * xtensa: add accept4 syscallChris Zankel2013-02-251-1/+4
| | | | | | | | Signed-off-by: Chris Zankel <chris@zankel.net>
| * xtensa: add finit_module syscallMax Filippov2013-02-231-1/+3
| | | | | | | | | | Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
generated by cgit v1.2.3-71-gd317 (git 2.46.0) at 2026-01-07 02:43:45 +0000