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* MAINTAINERS: add new maintainer for TPM DEVICE DRIVERJarkko Sakkinen2015-10-191-0/+1
| | | | | | | | | | | | | | | | | | At the moment, no one has time to pay enough attention to this subsystem so that patches get eventually merged into linux-next. Even critical bug fixes can lie for weeks. I'm happy to continue with the current maintainers if they are able to do their job but if this is not the case I cannot find any other solution but apply myself for the job. If there is someone more experienced and/or competent, I'm also happy to let one take the stand. Anything works as long as it works. I just want a solution for this bottleneck. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Acked-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
* Update KVM homepage UrlDirk Müller2015-10-011-2/+2
| | | | | | | | The old one appears to be a generic catch all page, which is unhelpful. Signed-off-by: Dirk Mueller <dmueller@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Merge tag 'usb-4.3-rc3' of ↵Linus Torvalds2015-09-261-2/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some USB driver fixes for 4.3-rc3. There's the usual assortment of new device ids, combined with xhci and gadget driver fixes. Full details in the shortlog. All of these have been in linux-next with no reported problems" * tag 'usb-4.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (34 commits) MAINTAINERS: remove amd5536udc USB gadget driver maintainer USB: whiteheat: fix potential null-deref at probe xhci: init command timeout timer earlier to avoid deleting it uninitialized xhci: change xhci 1.0 only restrictions to support xhci 1.1 usb: xhci: exit early in xhci_setup_device() if we're halted or dying usb: xhci: stop everything on the first call to xhci_stop usb: xhci: Clear XHCI_STATE_DYING on start usb: xhci: lock mutex on xhci_stop xhci: Move xhci_pme_quirk() behind #ifdef CONFIG_PM xhci: give command abortion one more chance before killing xhci usb: Use the USB_SS_MULT() macro to get the burst multiplier. usb: dwc3: gadget: Fix BUG in RT config usb: musb: fix cppi channel teardown for isoch transfer usb: phy: isp1301: Export I2C module alias information usb: gadget: drop null test before destroy functions usb: gadget: dummy_hcd: in transfer(), return data sent, not limit usb: gadget: dummy_hcd: fix rescan logic for transfer usb: gadget: dummy_hcd: fix unneeded else-if condition usb: gadget: dummy_hcd: emulate sending zlp in packet logic usb: musb: dsps: fix polling in device-only mode ...
| * MAINTAINERS: remove amd5536udc USB gadget driver maintainerGreg Kroah-Hartman2015-09-251-2/+1
| | | | | | | | | | | | | | | | | | Thomas can no longer work on the driver, so he asked me to mark the MAINTAINER entry as "Orphan" with the hope that someone else would someday pick it up. Cc: Thomas Dahlmann <dahlmann.thomas@arcor.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge tag 'staging-4.3-rc3' of ↵Linus Torvalds2015-09-261-4/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver fixes from Greg KH: "Here are some tiny staging driver and documentation fixes for 4.3-rc3. All of these resolve reported issues that people have found and have been in the linux-next tree for a while with no problems" * tag 'staging-4.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: MAINTAINERS: Update email address for Martyn Welch staging: ion: fix corruption of ion_import_dma_buf staging: dgap: Remove myself from the MAINTAINERS file staging: most: Add dependency to HAS_IOMEM staging: unisys: remove reference of visorutil staging: unisys: visornic: handle error return from device registration staging: unisys: stop device registration before visorbus registration staging: unisys: visorbus: Unregister driver on error staging: unisys: visornic: Fix receive bytes statistics staging: unisys: unregister netdev when create debugfs fails staging: fbtft: replace master->setup() with spi_setup() staging: fbtft: fix 9-bit SPI support detection staging/lustre: change Lustre URLs and mailing list staging/android: Update ION TODO per LPC discussion Staging: most: MOST and MOSTCORE should depend on HAS_DMA staging: most: fix HDM_USB dependencies and build errors
| * | MAINTAINERS: Update email address for Martyn WelchMartyn Welch2015-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | I have recently left GE and the email address listed for me in the maintainers file is no longer valid. Updating email address. Signed-off-by: Martyn Welch <martyn@welchs.me.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | staging: dgap: Remove myself from the MAINTAINERS fileMark Hounschell2015-09-171-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removes myself from the MAINTAINERS file for the dgap driver. There appears to be no way to get the firmware files required by the dgap driver into the linux-firmware tree. The dgap driver is useless wihtout this firmware. This product is considered an obsolete product by Digi. They will not respond to an inquiry concerning it or its firmware. Signed-off-by: Mark Hounschell <markh@compro.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | staging/lustre: change Lustre URLs and mailing listAndreas Dilger2015-09-131-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | Now that the lustre.org domain has been liberated we can again use that for the main website URL and mailing list. Also update the URL for userspace tools downloads and Git repo. Signed-off-by: Andreas Dilger <andreas.dilger@intel.com> Signed-off-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2015-09-261-1/+8
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) When we run a tap on netlink sockets, we have to copy mmap'd SKBs instead of cloning them. From Daniel Borkmann. 2) When converting classical BPF into eBPF, fix the setting of the source reg to BPF_REG_X. From Tycho Andersen. 3) Fix igmpv3/mldv2 report parsing in the bridge multicast code, from Linus Lussing. 4) Fix dst refcounting for ipv6 tunnels, from Martin KaFai Lau. 5) Set NLM_F_REPLACE flag properly when replacing ipv6 routes, from Roopa Prabhu. 6) Add some new cxgb4 PCI device IDs, from Hariprasad Shenai. 7) Fix headroom tests and SKB leaks in ipv6 fragmentation code, from Florian Westphal. 8) Check DMA mapping errors in bna driver, from Ivan Vecera. 9) Several 8139cp bug fixes (dev_kfree_skb_any in interrupt context, misclearing of interrupt status in TX timeout handler, etc.) from David Woodhouse. 10) In tipc, reset SKB header pointer after skb_linearize(), from Erik Hugne. 11) Fix autobind races et al. in netlink code, from Herbert Xu with help from Tejun Heo and others. 12) Missing SET_NETDEV_DEV in sunvnet driver, from Sowmini Varadhan. 13) Fix various races in timewait timer and reqsk_queue_hadh_req, from Eric Dumazet. 14) Fix array overruns in mac80211, from Johannes Berg and Dan Carpenter. 15) Fix data race in rhashtable_rehash_one(), from Dmitriy Vyukov. 16) Fix race between poll_one_napi and napi_disable, from Neil Horman. 17) Fix byte order in geneve tunnel port config, from John W Linville. 18) Fix handling of ARP replies over lightweight tunnels, from Jiri Benc. 19) We can loop when fib rule dumps cross multiple SKBs, fix from Wilson Kok and Roopa Prabhu. 20) Several reference count handling bug fixes in the PHY/MDIO layer from Russel King. 21) Fix lockdep splat in ppp_dev_uninit(), from Guillaume Nault. 22) Fix crash in icmp_route_lookup(), from David Ahern. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits) net: Fix panic in icmp_route_lookup net: update docbook comment for __mdiobus_register() ppp: fix lockdep splat in ppp_dev_uninit() net: via/Kconfig: GENERIC_PCI_IOMAP required if PCI not selected phy: marvell: add link partner advertised modes net: fix net_device refcounting phy: add phy_device_remove() phy: fixed-phy: properly validate phy in fixed_phy_update_state() net: fix phy refcounting in a bunch of drivers of_mdio: fix MDIO phy device refcounting phy: add proper phy struct device refcounting phy: fix mdiobus module safety net: dsa: fix of_mdio_find_bus() device refcount leak phy: fix of_mdio_find_bus() device refcount leak ip6_tunnel: Reduce log level in ip6_tnl_err() to debug ip6_gre: Reduce log level in ip6gre_err() to debug fib_rules: fix fib rule dumps across multiple skbs bnx2x: byte swap rss_key to comply to Toeplitz specs net: revert "net_sched: move tp->root allocation into fw_init()" lwtunnel: remove source and destination UDP port config option ...
| * | MAINTAINERS: remove bouncing email address for qlcnicJiri Benc2015-09-171-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I got this automated message from <shahed.shaikh@qlogic.com> when submitting a qlcnic patch: > Shahed Shaikh is no longer with QLogic. If you require assistance please > contact Ariel Elior Ariel.Elior@qlogic.com There's no point in having a bouncing address in MAINTAINERS. CC: Dept-GELinuxNICDev@qlogic.com CC: Ariel Elior <Ariel.Elior@qlogic.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | MAINTAINERS: add arcnet and take maintainershipMichael Grzeschik2015-09-171-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add entry for arcnet to MAINTAINERS file and add myself as the maintainer of the subsystem. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Cc: davem@davemloft.net Cc: joe@perches.com Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: Add documentation for VRF deviceDavid Ahern2015-09-171-0/+1
| | | | | | | | | | | | | | | Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge tag 'sound-4.3-rc3' of ↵Linus Torvalds2015-09-251-6/+3
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This ended up with a larger set of fixes than wished, unfortunately. As diffstat shows, the majority of changes are for various ASoC drivers (Realtek, Wolfson codec drivers, etc), in addition to a couple of HD-audio regression fixes. All these are reasonably small and nothing to scare much" * tag 'sound-4.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits) ALSA: hda - Disable power_save_node for Thinkpads ALSA: hda/tegra - async probe for avoiding module loading deadlock ASoC: rt5645: Prevent the pop sound in case of playback and the jack is plugging ASoC: rt5645: Increase the delay time to remove the pop sound ASoC: rt5645: Use the type SOC_DAPM_SINGLE_AUTODISABLE to prevent the weird sound in runtime of power up ASoC: pxa: pxa2xx-ac97: fix dma requestor lines MAINTAINERS: Update website and git repo for Wolfson Microelectronics ASoC: fsl_ssi: Fix checking of dai format for AC97 mode ASoC: wm0010: fix error path ASoC: wm0010: fix memory leak ASoC: wm8960: correct the max register value of mic boost pga ASoC: wm8962: remove 64k sample rate support ASoC: davinci-mcasp: Fix devm_kasprintf format string ASoC: fix broken pxa SoC support ASoC: davinci-mcasp: Set .symmetric_rates = 1 in snd_soc_dai_driver ASoC: au1x: psc-i2s: Fix unused variable 'ret' warning ASoC: SPEAr: Make SND_SPEAR_SOC select SND_SOC_GENERIC_DMAENGINE_PCM ASoC: mediatek: Increase periods_min in capture ASoC: davinci-mcasp: Revise the FIFO threshold calculation ASoC: wm8960: correct gain value for input PGA and add microphone PGA ...
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| *-----. \ \ Merge remote-tracking branches 'asoc/fix/davinci', 'asoc/fix/doc', ↵Mark Brown2015-09-231-6/+3
| |\ \ \ \ \ \ | | | |_|_|_|/ | | |/| | | | | | | | | | | 'asoc/fix/fsl-card', 'asoc/fix/fsl-ssi', 'asoc/fix/intel' and 'asoc/fix/maintainers' into asoc-linus
| | | | | * | MAINTAINERS: Update website and git repo for Wolfson MicroelectronicsRichard Fitzgerald2015-09-221-6/+3
| | | |_|/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support for Wolfson Microelectronics devices is now part of Cirrus Logic and the relevant parts of the old opensource.wolfsonmicro.com site have moved to the Cirrus Logic GitHub area. This patch updates the website and git repo links, and also removes an obsolete website link for the voltage and current drivers. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | | | | | Merge branch 'next' of ↵Linus Torvalds2015-09-241-0/+10
|\ \ \ \ \ \ | |/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management fixes from Zhang Rui: - Power allocator governor changes to allow binding on thermal zones with missing power estimates information. From Javi Merino. - Add compile test flags on thermal drivers that allow it without producing compilation errors. From Eduardo Valentin. - Fixes around memory allocation on cpu_cooling. From Javi Merino. - Fix on db8500 cpufreq code to allow autoload. From Luis de Bethencourt. - Maintainer entries for cpu cooling device * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal: power_allocator: exit early if there are no cooling devices thermal: power_allocator: don't require tzp to be present for the thermal zone thermal: power_allocator: relax the requirement of two passive trip points thermal: power_allocator: relax the requirement of a sustainable_power in tzp thermal: Add a function to get the minimum power thermal: cpu_cooling: free power table on error or when unregistering thermal: cpu_cooling: don't call kcalloc() under rcu_read_lock thermal: db8500_cpufreq_cooling: Fix module autoload for OF platform driver thermal: cpu_cooling: Add MAINTAINERS entry thermal: ti-soc: Kconfig fix to avoid menu showing wrongly thermal: ti-soc: allow compile test thermal: qcom_spmi: allow compile test thermal: exynos: allow compile test thermal: armada: allow compile test thermal: dove: allow compile test thermal: kirkwood: allow compile test thermal: rockchip: allow compile test thermal: spear: allow compile test thermal: hisi: allow compile test thermal: Fix thermal_zone_of_sensor_register to match documentation
| * | | | | thermal: cpu_cooling: Add MAINTAINERS entryViresh Kumar2015-09-131-0/+10
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | None of the patches are reaching Viresh or Daniel directly as get_maintainers doesn't report us as maintainers. Looks like file header or history of commits isn't able to do that properly. Add a separate entry for cpu_cooling driver in MAINTAINERS. Acked-by: Eduardo Valentin <edubezval@gmail.com> Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Acked-by: Amit Daniel Kachhap <amit.kachhap@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
* / / / / MAINTAINERS: update LTP mailing listCyril Hrubis2015-09-171-2/+2
|/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [akpm@linux-foundation.org: Wanlong Gao has moved] Signed-off-by: Cyril Hrubis <chrubis@suse.cz> Cc: Jan Stancek <jstancek@redhat.com> Cc: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com> Cc: Alexey Kodanev <alexey.kodanev@oracle.com> Cc: Wanlong Gao <wanlong.gao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-09-111-0/+8
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge fourth patch-bomb from Andrew Morton: - sys_membarier syscall - seq_file interface changes - a few misc fixups * emailed patches from Andrew Morton <akpm@linux-foundation.org>: revert "ocfs2/dlm: use list_for_each_entry instead of list_for_each" mm/early_ioremap: add explicit #include of asm/early_ioremap.h fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void selftests: enhance membarrier syscall test selftests: add membarrier syscall test sys_membarrier(): system-wide memory barrier (generic, x86) MODSIGN: fix a compilation warning in extract-cert
| * | | | sys_membarrier(): system-wide memory barrier (generic, x86)Mathieu Desnoyers2015-09-111-0/+8
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is an implementation of a new system call, sys_membarrier(), which executes a memory barrier on all threads running on the system. It is implemented by calling synchronize_sched(). It can be used to distribute the cost of user-space memory barriers asymmetrically by transforming pairs of memory barriers into pairs consisting of sys_membarrier() and a compiler barrier. For synchronization primitives that distinguish between read-side and write-side (e.g. userspace RCU [1], rwlocks), the read-side can be accelerated significantly by moving the bulk of the memory barrier overhead to the write-side. The existing applications of which I am aware that would be improved by this system call are as follows: * Through Userspace RCU library (http://urcu.so) - DNS server (Knot DNS) https://www.knot-dns.cz/ - Network sniffer (http://netsniff-ng.org/) - Distributed object storage (https://sheepdog.github.io/sheepdog/) - User-space tracing (http://lttng.org) - Network storage system (https://www.gluster.org/) - Virtual routers (https://events.linuxfoundation.org/sites/events/files/slides/DPDK_RCU_0MQ.pdf) - Financial software (https://lkml.org/lkml/2015/3/23/189) Those projects use RCU in userspace to increase read-side speed and scalability compared to locking. Especially in the case of RCU used by libraries, sys_membarrier can speed up the read-side by moving the bulk of the memory barrier cost to synchronize_rcu(). * Direct users of sys_membarrier - core dotnet garbage collector (https://github.com/dotnet/coreclr/issues/198) Microsoft core dotnet GC developers are planning to use the mprotect() side-effect of issuing memory barriers through IPIs as a way to implement Windows FlushProcessWriteBuffers() on Linux. They are referring to sys_membarrier in their github thread, specifically stating that sys_membarrier() is what they are looking for. To explain the benefit of this scheme, let's introduce two example threads: Thread A (non-frequent, e.g. executing liburcu synchronize_rcu()) Thread B (frequent, e.g. executing liburcu rcu_read_lock()/rcu_read_unlock()) In a scheme where all smp_mb() in thread A are ordering memory accesses with respect to smp_mb() present in Thread B, we can change each smp_mb() within Thread A into calls to sys_membarrier() and each smp_mb() within Thread B into compiler barriers "barrier()". Before the change, we had, for each smp_mb() pairs: Thread A Thread B previous mem accesses previous mem accesses smp_mb() smp_mb() following mem accesses following mem accesses After the change, these pairs become: Thread A Thread B prev mem accesses prev mem accesses sys_membarrier() barrier() follow mem accesses follow mem accesses As we can see, there are two possible scenarios: either Thread B memory accesses do not happen concurrently with Thread A accesses (1), or they do (2). 1) Non-concurrent Thread A vs Thread B accesses: Thread A Thread B prev mem accesses sys_membarrier() follow mem accesses prev mem accesses barrier() follow mem accesses In this case, thread B accesses will be weakly ordered. This is OK, because at that point, thread A is not particularly interested in ordering them with respect to its own accesses. 2) Concurrent Thread A vs Thread B accesses Thread A Thread B prev mem accesses prev mem accesses sys_membarrier() barrier() follow mem accesses follow mem accesses In this case, thread B accesses, which are ensured to be in program order thanks to the compiler barrier, will be "upgraded" to full smp_mb() by synchronize_sched(). * Benchmarks On Intel Xeon E5405 (8 cores) (one thread is calling sys_membarrier, the other 7 threads are busy looping) 1000 non-expedited sys_membarrier calls in 33s =3D 33 milliseconds/call. * User-space user of this system call: Userspace RCU library Both the signal-based and the sys_membarrier userspace RCU schemes permit us to remove the memory barrier from the userspace RCU rcu_read_lock() and rcu_read_unlock() primitives, thus significantly accelerating them. These memory barriers are replaced by compiler barriers on the read-side, and all matching memory barriers on the write-side are turned into an invocation of a memory barrier on all active threads in the process. By letting the kernel perform this synchronization rather than dumbly sending a signal to every process threads (as we currently do), we diminish the number of unnecessary wake ups and only issue the memory barriers on active threads. Non-running threads do not need to execute such barrier anyway, because these are implied by the scheduler context switches. Results in liburcu: Operations in 10s, 6 readers, 2 writers: memory barriers in reader: 1701557485 reads, 2202847 writes signal-based scheme: 9830061167 reads, 6700 writes sys_membarrier: 9952759104 reads, 425 writes sys_membarrier (dyn. check): 7970328887 reads, 425 writes The dynamic sys_membarrier availability check adds some overhead to the read-side compared to the signal-based scheme, but besides that, sys_membarrier slightly outperforms the signal-based scheme. However, this non-expedited sys_membarrier implementation has a much slower grace period than signal and memory barrier schemes. Besides diminishing the number of wake-ups, one major advantage of the membarrier system call over the signal-based scheme is that it does not need to reserve a signal. This plays much more nicely with libraries, and with processes injected into for tracing purposes, for which we cannot expect that signals will be unused by the application. An expedited version of this system call can be added later on to speed up the grace period. Its implementation will likely depend on reading the cpu_curr()->mm without holding each CPU's rq lock. This patch adds the system call to x86 and to asm-generic. [1] http://urcu.so membarrier(2) man page: MEMBARRIER(2) Linux Programmer's Manual MEMBARRIER(2) NAME membarrier - issue memory barriers on a set of threads SYNOPSIS #include <linux/membarrier.h> int membarrier(int cmd, int flags); DESCRIPTION The cmd argument is one of the following: MEMBARRIER_CMD_QUERY Query the set of supported commands. It returns a bitmask of supported commands. MEMBARRIER_CMD_SHARED Execute a memory barrier on all threads running on the system. Upon return from system call, the caller thread is ensured that all running threads have passed through a state where all memory accesses to user-space addresses match program order between entry to and return from the system call (non-running threads are de facto in such a state). This covers threads from all pro=E2=80=90 cesses running on the system. This command returns 0. The flags argument needs to be 0. For future extensions. All memory accesses performed in program order from each targeted thread is guaranteed to be ordered with respect to sys_membarrier(). If we use the semantic "barrier()" to represent a compiler barrier forcing memory accesses to be performed in program order across the barrier, and smp_mb() to represent explicit memory barriers forcing full memory ordering across the barrier, we have the following ordering table for each pair of barrier(), sys_membarrier() and smp_mb(): The pair ordering is detailed as (O: ordered, X: not ordered): barrier() smp_mb() sys_membarrier() barrier() X X O smp_mb() X O O sys_membarrier() O O O RETURN VALUE On success, these system calls return zero. On error, -1 is returned, and errno is set appropriately. For a given command, with flags argument set to 0, this system call is guaranteed to always return the same value until reboot. ERRORS ENOSYS System call is not implemented. EINVAL Invalid arguments. Linux 2015-04-15 MEMBARRIER(2) Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nicholas Miell <nmiell@comcast.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David Howells <dhowells@redhat.com> Cc: Pranith Kumar <bobby.prani@gmail.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge tag 'ntb-4.3' of git://github.com/jonmason/ntbLinus Torvalds2015-09-111-0/+2
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NTB fixes from Jon Mason: "NTB bug and documentation fixes, new device IDs, performance improvements, and adding a mailing list to MAINTAINERS for NTB" * tag 'ntb-4.3' of git://github.com/jonmason/ntb: NTB: Fix range check on memory window index NTB: Improve index handling in B2B MW workaround NTB: Fix documentation for ntb_peer_db_clear. NTB: Fix documentation for ntb_link_is_up NTB: Use unique DMA channels for TX and RX NTB: Remove dma_sync_wait from ntb_async_rx NTB: Clean up QP stats info NTB: Make the transport list in order of discovery NTB: Add PCI Device IDs for Broadwell Xeon NTB: Add flow control to the ntb_netdev NTB: Add list to MAINTAINERS
| * | | NTB: Add list to MAINTAINERSJon Mason2015-09-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Add the new NTB mailing list to MAINTAINERS Signed-off-by: Jon Mason <jdmason@kudzu.us>
* | | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-09-101-2/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge third patch-bomb from Andrew Morton: - even more of the rest of MM - lib/ updates - checkpatch updates - small changes to a few scruffy filesystems - kmod fixes/cleanups - kexec updates - a dma-mapping cleanup series from hch * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (81 commits) dma-mapping: consolidate dma_set_mask dma-mapping: consolidate dma_supported dma-mapping: cosolidate dma_mapping_error dma-mapping: consolidate dma_{alloc,free}_noncoherent dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} mm: use vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd() mm: make sure all file VMAs have ->vm_ops set mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff() mm: mark most vm_operations_struct const namei: fix warning while make xmldocs caused by namei.c ipc: convert invalid scenarios to use WARN_ON zlib_deflate/deftree: remove bi_reverse() lib/decompress_unlzma: Do a NULL check for pointer lib/decompressors: use real out buf size for gunzip with kernel fs/affs: make root lookup from blkdev logical size sysctl: fix int -> unsigned long assignments in INT_MIN case kexec: export KERNEL_IMAGE_SIZE to vmcoreinfo kexec: align crash_notes allocation to make it be inside one physical page kexec: remove unnecessary test in kimage_alloc_crash_control_pages() kexec: split kexec_load syscall from kexec core code ...
| * | | | MAINTAINERS/CREDITS: mark MaxRAID as Orphan, move Anil Ravindranath to CREDITSJoe Perches2015-09-101-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Anil's email address bounces and he hasn't had a signoff in over 5 years. Signed-off-by: Joe Perches <joe@perches.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge tag 'nios2-v4.3-rc1' of ↵Linus Torvalds2015-09-091-1/+1
|\ \ \ \ \ | |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 Pull nios2 updates from Ley Foon Tan: - add defconfig and device tree for max 10 support - migrate to new 'set-state' interface for timer - fix unaligned handler - MAINTAINERS: update nios2 git repo * tag 'nios2-v4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2: nios2: add Max10 defconfig nios2: Add Max10 device tree MAINTAINERS: update nios2 git repo nios2: remove unused statistic counters nios2: fixed variable imm16 to s16 nios2/time: Migrate to new 'set-state' interface
| * | | | MAINTAINERS: update nios2 git repoLey Foon Tan2015-09-081-1/+1
| |/ / / | | | | | | | | | | | | Signed-off-by: Ley Foon Tan <lftan@altera.com>
* | | | Merge tag 'for-linus' of ↵Linus Torvalds2015-09-091-1/+8
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull inifiniband/rdma updates from Doug Ledford: "This is a fairly sizeable set of changes. I've put them through a decent amount of testing prior to sending the pull request due to that. There are still a few fixups that I know are coming, but I wanted to go ahead and get the big, sizable chunk into your hands sooner rather than waiting for those last few fixups. Of note is the fact that this creates what is intended to be a temporary area in the drivers/staging tree specifically for some cleanups and additions that are coming for the RDMA stack. We deprecated two drivers (ipath and amso1100) and are waiting to hear back if we can deprecate another one (ehca). We also put Intel's new hfi1 driver into this area because it needs to be refactored and a transfer library created out of the factored out code, and then it and the qib driver and the soft-roce driver should all be modified to use that library. I expect drivers/staging/rdma to be around for three or four kernel releases and then to go away as all of the work is completed and final deletions of deprecated drivers are done. Summary of changes for 4.3: - Create drivers/staging/rdma - Move amso1100 driver to staging/rdma and schedule for deletion - Move ipath driver to staging/rdma and schedule for deletion - Add hfi1 driver to staging/rdma and set TODO for move to regular tree - Initial support for namespaces to be used on RDMA devices - Add RoCE GID table handling to the RDMA core caching code - Infrastructure to support handling of devices with differing read and write scatter gather capabilities - Various iSER updates - Kill off unsafe usage of global mr registrations - Update SRP driver - Misc mlx4 driver updates - Support for the mr_alloc verb - Support for a netlink interface between kernel and user space cache daemon to speed path record queries and route resolution - Ininitial support for safe hot removal of verbs devices" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (136 commits) IB/ipoib: Suppress warning for send only join failures IB/ipoib: Clean up send-only multicast joins IB/srp: Fix possible protection fault IB/core: Move SM class defines from ib_mad.h to ib_smi.h IB/core: Remove unnecessary defines from ib_mad.h IB/hfi1: Add PSM2 user space header to header_install IB/hfi1: Add CSRs for CONFIG_SDMA_VERBOSITY mlx5: Fix incorrect wc pkey_index assignment for GSI messages IB/mlx5: avoid destroying a NULL mr in reg_user_mr error flow IB/uverbs: reject invalid or unknown opcodes IB/cxgb4: Fix if statement in pick_local_ip6adddrs IB/sa: Fix rdma netlink message flags IB/ucma: HW Device hot-removal support IB/mlx4_ib: Disassociate support IB/uverbs: Enable device removal when there are active user space applications IB/uverbs: Explicitly pass ib_dev to uverbs commands IB/uverbs: Fix race between ib_uverbs_open and remove_one IB/uverbs: Fix reference counting usage of event files IB/core: Make ib_dealloc_pd return void IB/srp: Create an insecure all physical rkey only if needed ...
| * | | | IB/hfi1: add driver filesMike Marciniszyn2015-08-281-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Friedley <andrew.friedley@intel.com> Signed-off-by: Arthur Kepner <arthur.kepner@intel.com> Signed-off-by: Brendan Cunningham <brendan.cunningham@intel.com> Signed-off-by: Brian Welty <brian.welty@intel.com> Signed-off-by: Caz Yokoyama <caz.yokoyama@intel.com> Signed-off-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com> Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Jim Snow <jim.m.snow@intel.com> Signed-off-by: John Gregor <john.a.gregor@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Kevin Pine <kevin.pine@intel.com> Signed-off-by: Kyle Liddell <kyle.liddell@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Ravi Krishnaswamy <ravi.krishnaswamy@intel.com> Signed-off-by: Sadanand Warrier <sadanand.warrier@intel.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Vlad Danushevsky <vladimir.danusevsky@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| * | | | IB/ipath: Deprecate ipath driver and move to staging.Dennis Dalessandro2015-08-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is now time for the ipath driver to begin to be phased out of the kernel. This patch moves the ipath driver from the Infiniband sub tree to the staging area where it will remain until the code is removed from the kernel in a few releases. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
| * | | | Staging: Add staging/rdma directory and update MAINTAINERSDoug Ledford2015-08-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create the rdma directory in the staging area for use as we deprecate some older drivers and as we bring in some new drivers that are in need of work. Update the MAINTAINERS file so that updates to these files go to linux-rdma@vger.kernel.org. Expected lifespan of this directory is three releases for any deprecated drivers moved here and an unknown, but theoretically bounded amount of time for the new drivers as a new core RDMA transfer library needs to be written and the drivers modified to use it in order for them to move out of this directory. Signed-off-by: Doug Ledford <dledford@redhat.com>
* | | | | Merge tag 'mmc-v4.3' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds2015-09-081-0/+6
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MMC updates from Ulf Hansson: "MMC core: - Fix a race condition in the request handling - Skip trim commands for some buggy kingston eMMCs - An optimization and a correction for erase groups - Set CMD23 quirk for some Sandisk cards MMC host: - sdhci: Give GPIO CD higher precedence and don't poll when it's used - sdhci: Fix DMA memory leakage - sdhci: Some updates for clock management - sdhci-of-at91: introduce driver for the Atmel SDMMC - sdhci-of-arasan: Add support for sdhci-5.1 - sdhci-esdhc-imx: Add support for imx7d which also supports HS400 - sdhci: A collection of fixes and improvements for various sdhci hosts - omap_hsmmc: Modernization of the regulator code - dw_mmc: A couple of fixes for DMA and PIO mode - usdhi6rol0: A few fixes and support probe deferral for regulators - pxamci: Convert to use dmaengine - sh_mmcif: Fix the suspend process in a short term solution - tmio: Adjust timeout for commands - sunxi: Fix timeout while gating/ungating clock" * tag 'mmc-v4.3' of git://git.linaro.org/people/ulf.hansson/mmc: (67 commits) mmc: android-goldfish: remove incorrect __iomem annotation mmc: core: fix race condition in mmc_wait_data_done mmc: host: omap_hsmmc: remove CONFIG_REGULATOR check mmc: host: omap_hsmmc: use ios->vdd for setting vmmc voltage mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status mmc: host: omap_hsmmc: enable/disable vmmc_aux regulator based on previous state mmc: host: omap_hsmmc: don't use ->set_power to set initial regulator state mmc: host: omap_hsmmc: avoid pbias regulator enable on power off mmc: host: omap_hsmmc: add separate function to set pbias mmc: host: omap_hsmmc: add separate functions for enable/disable supply mmc: host: omap_hsmmc: return error if any of the regulator APIs fail mmc: host: omap_hsmmc: remove unnecessary pbias set_voltage mmc: host: omap_hsmmc: use mmc_host's vmmc and vqmmc mmc: host: omap_hsmmc: use the ocrmask provided by the vmmc regulator mmc: host: omap_hsmmc: cleanup omap_hsmmc_reg_get() mmc: host: omap_hsmmc: return on fatal errors from omap_hsmmc_reg_get mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc mmc: sdhci-of-at91: fix platform_no_drv_owner.cocci warnings mmc: sh_mmcif: Fix suspend process mmc: usdhi6rol0: fix error return code ...
| * | | | | MAINTAINERS: add entry for Atmel sdhci-of-at91 driverludovic.desroches@atmel.com2015-08-241-0/+6
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an entry for Atmel SDMMC device. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | | | | Merge tag 'platform-drivers-x86-v4.3-1' of ↵Linus Torvalds2015-09-081-1/+6
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull x86 platform driver updates from Darren Hart: "Significant work on toshiba_acpi, including new hardware support, refactoring, and cleanups. Extend device support for asus, ideapad, and acer systems. New surface pro 3 buttons driver. Misc minor cleanups for thinkpad and hp-wireless. acer-wmi: - No rfkill on HP Omen 15 wifi thinkpad_acpi: - Remove side effects from vdbg_printk -> no_printk macro surface pro 3: - Add support driver for Surface Pro 3 buttons hp-wireless: - remove unneeded goto/label in hpwl_init ideapad-laptop: - add alternative representation for Yoga 2 to DMI table - Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list asus-laptop: - Add key found on Asus F3M MAINTAINERS: - Remove Toshiba Linux mailing list address toshiba_acpi: - Bump driver version to 0.23 - Remove unnecessary checks and returns in HCI/SCI functions - Refactor *{get, set} functions return value - Remove "*not supported" feature prints - Change *available functions return type - Add set_fan_status function - Change some variables to avoid warnings from ninja-check - Reorder toshiba_acpi_alt_keymap entries - Remove unused wireless defines - Transflective backlight updates - Avoid registering input device on WMI event laptops - Add /dev/toshiba_acpi device - Adapt /proc/acpi/toshiba/keys to TOS1900 devices" * tag 'platform-drivers-x86-v4.3-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (21 commits) acer-wmi: No rfkill on HP Omen 15 wifi thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro surface pro 3: Add support driver for Surface Pro 3 buttons hp-wireless: remove unneeded goto/label in hpwl_init ideapad-laptop: add alternative representation for Yoga 2 to DMI table asus-laptop: Add key found on Asus F3M MAINTAINERS: Remove Toshiba Linux mailing list address ideapad-laptop: Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list toshiba_acpi: Bump driver version to 0.23 toshiba_acpi: Remove unnecessary checks and returns in HCI/SCI functions toshiba_acpi: Refactor *{get, set} functions return value toshiba_acpi: Remove "*not supported" feature prints toshiba_acpi: Change *available functions return type toshiba_acpi: Add set_fan_status function toshiba_acpi: Change some variables to avoid warnings from ninja-check toshiba_acpi: Reorder toshiba_acpi_alt_keymap entries toshiba_acpi: Remove unused wireless defines toshiba_acpi: Transflective backlight updates toshiba_acpi: Avoid registering input device on WMI event laptops toshiba_acpi: Add /dev/toshiba_acpi device ...
| * | | | | surface pro 3: Add support driver for Surface Pro 3 buttonsChen Yu2015-08-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since Surface Pro 3 does not follow the specs of "Windows ACPI Design Guide for SoC Platform", code in drivers/input/misc/soc_array.c can not detect these buttons on it. According to bios implementation, Surface Pro 3 encapsulates these buttons in a device named "VGBI", with _HID "MSHW0028". When any of the buttons is pressed, a specify ACPI notification code for this button will be delivered to "VGBI". For example, if power button is pressed down, ACPI notification code of 0xc6 will be sent by Notify(VGBI, 0xc6). This patch leverages "VGBI" to distinguish different ACPI notification code from Power button, Home button, Volume button, then dispatches these code to input layer. Lid is already covered by acpi button driver, so there's no need to rewrite. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=84651 Tested-by: Ethan Schoonover <es@ethanschoonover.com> Tested-by: Peter Amidon <psa.pub.0@picnicpark.org> Tested-by: Donavan Lance <tusklahoma@gmail.com> Tested-by: Stephen Just <stephenjust@gmail.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> [dvhart@linux.intel.com: Formatting corrections in MAINTAINERS and Intel (c)] Signed-off-by: Darren Hart <dvhart@linux.intel.com>
| * | | | | MAINTAINERS: Remove Toshiba Linux mailing list addressAzael Avalos2015-08-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of March 31th 2015, the mailing-list service finished [1]. This patch simply removes such address. [1] http://goo.gl/F6jS5r Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
* | | | | | Merge tag 'libnvdimm-for-4.3' of ↵Linus Torvalds2015-09-081-0/+1
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "This update has successfully completed a 0day-kbuild run and has appeared in a linux-next release. The changes outside of the typical drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and the introduction of ZONE_DEVICE + devm_memremap_pages(). Summary: - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic mechanism for adding device-driver-discovered memory regions to the kernel's direct map. This facility is used by the pmem driver to enable pfn_to_page() operations on the page frames returned by DAX ('direct_access' in 'struct block_device_operations'). For now, the 'memmap' allocation for these "device" pages comes from "System RAM". Support for allocating the memmap from device memory will arrive in a later kernel. - Introduce memremap() to replace usages of ioremap_cache() and ioremap_wt(). memremap() drops the __iomem annotation for these mappings to memory that do not have i/o side effects. The replacement of ioremap_cache() with memremap() is limited to the pmem driver to ease merging the api change in v4.3. Completion of the conversion is targeted for v4.4. - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem driver, update the VFS DAX implementation and PMEM api to provide persistence guarantees for kernel operations on a DAX mapping. - Convert the ACPI NFIT 'BLK' driver to map the block apertures as cacheable to improve performance. - Miscellaneous updates and fixes to libnvdimm including support for issuing "address range scrub" commands, clarifying the optimal 'sector size' of pmem devices, a clarification of the usage of the ACPI '_STA' (status) property for DIMM devices, and other minor fixes" * tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits) libnvdimm, pmem: direct map legacy pmem by default libnvdimm, pmem: 'struct page' for pmem libnvdimm, pfn: 'struct page' provider infrastructure x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB add devm_memremap_pages mm: ZONE_DEVICE for "device memory" mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h dax: drop size parameter to ->direct_access() nd_blk: change aperture mapping from WC to WB nvdimm: change to use generic kvfree() pmem, dax: have direct_access use __pmem annotation dax: update I/O path to do proper PMEM flushing pmem: add copy_from_iter_pmem() and clear_pmem() pmem, x86: clean up conditional pmem includes pmem: remove layer when calling arch_has_wmb_pmem() pmem, x86: move x86 PMEM API to new pmem.h header libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option pmem: switch to devm_ allocations devres: add devm_memremap libnvdimm, btt: write and validate parent_uuid ...
| * | | | | | pmem, x86: move x86 PMEM API to new pmem.h headerRoss Zwisler2015-08-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the x86 PMEM API implementation out of asm/cacheflush.h and into its own header asm/pmem.h. This will allow members of the PMEM API to be more easily identified on this and other architectures. Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | | | | | | Merge branch 'next' of ↵Linus Torvalds2015-09-081-3/+18
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - PKCS#7 support added to support signed kexec, also utilized for module signing. See comments in 3f1e1bea. ** NOTE: this requires linking against the OpenSSL library, which must be installed, e.g. the openssl-devel on Fedora ** - Smack - add IPv6 host labeling; ignore labels on kernel threads - support smack labeling mounts which use binary mount data - SELinux: - add ioctl whitelisting (see http://kernsec.org/files/lss2015/vanderstoep.pdf) - fix mprotect PROT_EXEC regression caused by mm change - Seccomp: - add ptrace options for suspend/resume" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (57 commits) PKCS#7: Add OIDs for sha224, sha284 and sha512 hash algos and use them Documentation/Changes: Now need OpenSSL devel packages for module signing scripts: add extract-cert and sign-file to .gitignore modsign: Handle signing key in source tree modsign: Use if_changed rule for extracting cert from module signing key Move certificate handling to its own directory sign-file: Fix warning about BIO_reset() return value PKCS#7: Add MODULE_LICENSE() to test module Smack - Fix build error with bringup unconfigured sign-file: Document dependency on OpenSSL devel libraries PKCS#7: Appropriately restrict authenticated attributes and content type KEYS: Add a name for PKEY_ID_PKCS7 PKCS#7: Improve and export the X.509 ASN.1 time object decoder modsign: Use extract-cert to process CONFIG_SYSTEM_TRUSTED_KEYS extract-cert: Cope with multiple X.509 certificates in a single file sign-file: Generate CMS message as signature instead of PKCS#7 PKCS#7: Support CMS messages also [RFC5652] X.509: Change recorded SKID & AKID to not include Subject or Issuer PKCS#7: Check content type and versions MAINTAINERS: The keyrings mailing list has moved ...
| * | | | | | | Move certificate handling to its own directoryDavid Howells2015-08-141-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move certificate handling out of the kernel/ directory and into a certs/ directory to get all the weird stuff in one place and move the generated signing keys into this directory. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | | | | | MAINTAINERS: The keyrings mailing list has movedDavid Howells2015-08-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The keyrings mailing list has moved to keyrings@vger.kernel.org Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
| * | | | | | | Yama: remove needless CONFIG_SECURITY_YAMA_STACKEDKees Cook2015-07-281-0/+6
| | |/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that minor LSMs can cleanly stack with major LSMs, remove the unneeded config for Yama to be made to explicitly stack. Just selecting the main Yama CONFIG will allow it to work, regardless of the major LSM. Since distros using Yama are already forcing it to stack, this is effectively a no-op change. Additionally add MAINTAINERS entry. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.l.morris@oracle.com>
* | | | | | | Merge tag 'media/v4.3-1' of ↵Linus Torvalds2015-09-051-0/+59
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - new DVB frontend drivers: ascot2e, cxd2841er, horus3a, lnbh25 - new HDMI capture driver: tc358743 - new driver for NetUP DVB new boards (netup_unidvb) - IR support for DVBSky cards (smipcie-ir) - Coda driver has gain macroblock tiling support - Renesas R-Car gains JPEG codec driver - new DVB platform driver for STi boards: c8sectpfe - added documentation for the media core kABI to device-drivers DocBook - lots of driver fixups, cleanups and improvements * tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (297 commits) [media] c8sectpfe: Remove select on undefined LIBELF_32 [media] i2c: fix platform_no_drv_owner.cocci warnings [media] cx231xx: Use wake_up_interruptible() instead of wake_up_interruptible_nr() [media] tc358743: only queue subdev notifications if devnode is set [media] tc358743: add missing Kconfig dependency/select [media] c8sectpfe: Use %pad to print 'dma_addr_t' [media] DocBook media: Fix typo "the the" in xml files [media] tc358743: make reset gpio optional [media] tc358743: set direction of reset gpio using devm_gpiod_get [media] dvbdev: document most of the functions/data structs [media] dvb_frontend.h: document the struct dvb_frontend [media] dvb-frontend.h: document struct dtv_frontend_properties [media] dvb-frontend.h: document struct dvb_frontend_ops [media] dvb: Use DVBFE_ALGO_HW where applicable [media] dvb_frontend.h: document struct analog_demod_ops [media] dvb_frontend.h: Document struct dvb_tuner_ops [media] Docbook: Document struct analog_parameters [media] dvb_frontend.h: get rid of dvbfe_modcod [media] add documentation for struct dvb_tuner_info [media] dvb_frontend: document dvb_frontend_tune_settings ...
| * | | | | | | [media] MAINTAINERS: Add c8sectpfe driver directory to STi sectionPeter Griffin2015-08-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the new c8sectpfe demux driver to the STi section of the MAINTAINERS file. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] netup_unidvb: NetUP Universal DVB-S/S2/T/T2/C PCI-E card driverKozlov Sergey2015-08-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add NetUP Dual Universal CI PCIe board driver. The board has - two CI slots - two I2C adapters - SPI master bus for accessing flash memory containing FPGA firmware No changes required. Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] cxd2841er: Sony CXD2841ER DVB-S/S2/T/T2/C demodulator driverKozlov Sergey2015-08-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DVB-C/T/T2/S/S2 demodulator frontend driver Sony CXD2841ER chip. Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] lnbh25: LNBH25 SEC controller driverKozlov Sergey2015-08-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DVB SEC frontend driver for STM LNBH25PQR chip. [mchehab@osg.samsung.com: fix merge conflict: fe_sec_voltage_t should not be used in kernelspace anymore. instead, it should use enum fe_sec_voltage] Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] ascot2e: Sony Ascot2e DVB-C/T/T2 tuner driverKozlov Sergey2015-08-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DVB-T/T2/C frontend driver for Sony Ascot2e (CXD2861ER) chip. Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] horus3a: Sony Horus3A DVB-S/S2 tuner driverKozlov Sergey2015-08-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DVB-S/S2 frontend driver for Sony Horus3A (CXD2832AER) chip Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] MAINTAINERS: V4L2: PLATFORM: Add entry for Renesas JPEG Processing ↵Mikhail Ulyanov2015-08-111-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unit driver Update RENESAS JPU driver maintainer in MAINTAINERS file. Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| * | | | | | | [media] Driver for Toshiba TC358743 HDMI to CSI-2 bridgeMats Randgaard2015-07-171-0/+7
| | |_|_|_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver is tested on our hardware and all the implemented features works as expected. Missing features: - CEC support - HDCP repeater support - IR support Signed-off-by: Mats Randgaard <matrandg@cisco.com> [hans.verkuil@cisco.com: updated copyright year to 2015] [hans.verkuil@cisco.com: update confusing confctl_mutex comment] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>