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2014-08-18ASoC: core: fix .info for SND_SOC_BYTES_TLVSubhransu S. Prusty1-1/+1
Commit 7523a271 - "ASoC: core: add a helper for extended byte controls using TLV" introduced support for TLV byte controls but had a typo for the info function, so fix the same Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-18gpu: ipu-v3: Add functions to set CSI/IC source muxesSteve Longerbeam1-0/+6
Adds two new functions, ipu_set_csi_src_mux() and ipu_set_ic_src_mux(), that select the inputs to the CSI and IC respectively. Both muxes are programmed in the IPU_CONF register. Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-08-18gpu: ipu-v3: Add ipu-cpmem unitSteve Longerbeam1-152/+36
Move channel parameter memory setup functions and macros into a new submodule ipu-cpmem. In the process, cleanup arguments to the functions to take a channel pointer instead of a pointer into cpmem for that channel. That allows the structure of the parameter memory to be private to ipu-cpmem.c. Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2014-08-17SUNRPC: get rid of the request wait queueTrond Myklebust1-1/+0
We're always _only_ waking up tasks from within the sp_threads list, so we know that they are enqueued and alive. The rq_wait waitqueue is just a distraction with extra atomic semantics. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-08-17net: phy: bcm7xxx: remove 28nm wildcard entryFlorian Fainelli1-1/+0
A wildcard entry with the 32-bits OUI 0x600d8400 was added as part of the BCM7xxx internal PHY driver, but that entry might match other PHYs that are not covered by this driver, so let's just remove it. Fixes: b560a58c45c6 ("net: phy: add Broadcom BCM7xxx internal PHY driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@greenl8ke.davemloft.net>
2014-08-17ASoC: cs35l32: Add support for CS35L32 Boosted AmplifierBrian Austin1-0/+26
This patch adds support for the Cirrus Logic CS35L32 Boosted Amplifier I2S output provides monitor data to the SOC/CODEC/DSP for speaker protection/enhancement algorithms Signed-off-by: Brian Austin <brian.austin@cirrus.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-17ASoC: Drop const from struct snd_soc_dai_link *of_node membersSylwester Nawrocki1-3/+3
Dropping the const qualifiers prevents "passing argument 1 of ‘of_node_put’ discards ‘const’ qualifier from pointer target type" type warnings when compiling the code dropping reference to cpu_of_node, codec_of_node or platform_of_node with with an of_node_put() function call. This lets us to avoid casting to struct device_node * or caching variables internally in drivers just to be able to properly drop a reference to the OF node on clean up paths. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-17regulator: core: add guard delay between calling regulator_disable and _enableGuodong Xu1-0/+6
Some regulator require a minimum delay between its disable and next enable. This is to avoid damages when out-of-range frequent disable/enable of a single regulator can bring to the regulator chip. Add @off_on_delay to struct regulator_desc. Device drivers' can use this field to set this guard time. Add @last_off_jiffy to struct regulator_dev. When @off_on_delay is set by driver, regulator core can store its last off (disable) time into this field. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-17regulator: core: add const qualifier to ops in struct regulator_descGuodong Xu1-1/+1
struct regulator_ops *ops is a member in struct regulator_desc, which gets its value from individual regulator driver upon regulator_register() and is used by regulator core APIs. It's not allowed for regulator core to modify any of these callbacks in *ops. Add 'const' qualifier to enforce that. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-17regulator: s2mpxxx: Move regulator min/step voltages in common placeAmit Daniel Kachhap4-31/+21
This is a cleanup patch and moves min/step voltages in a common samsung header file so that they can be used by other s2mpxxx PMIC drivers. Only few required macros are added currently and others can be added if needed. Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-17regulator: da9211: support DA9213James Ban1-1/+6
This is a patch for supporting DA9213. Signed-off-by: James Ban <james.ban.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16ata: remove deprecated struct ahci_platform_dataBartlomiej Zolnierkiewicz1-13/+0
The last user of the deprecated struct ahci_platform_data has been cleaned up recently (SPEAr1340 got a proper PHY driver). Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-08-16Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds1-0/+1
Pull more SCSI changes from James Bottomley: "This is a small set of updates which missed the first pull. It's more msix updates, some iscsi and qla4xxx fixes, we also have some string null termination fixes a return value fix and a couple of pm8001 firmware fixes. Just a note, we do have a couple of bug fixes coming under separate cover, but they don't have to be part of the merge window" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: iscsi class: Fix freeing of skb in get host error path scsi: fix u14-34f printk format warnings pm8001: fix pm8001_store_update_fw pm8001: Fix erratic calculation in update_flash pm8001: Update MAINTAINERS list libiscsi: return new error code when nop times out iscsi class: fix get_host_stats return code when not supported iscsi class: fix get_host_stats error handling qla4xxx: fix get_host_stats error propagation qla4xxx: check the return value of dma_alloc_coherent() scsi: qla4xxx: ql4_mbx.c: Cleaning up missing null-terminate in conjunction with strncpy scsi: qla4xxx: ql4_os.c: Cleaning up missing null-terminate in conjunction with strncpy qla4xxx: Use pci_enable_msix_exact() instead of pci_enable_msix() pm8001: Use pci_enable_msix_exact() instead of pci_enable_msix()
2014-08-16Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input layer fixes from Dmitry Torokhov: "Second round of updates for the input subsystem. Mostly small fixups to the code merged in the first round (atmel_mxt_ts, wacom) but also a smallish patch to xbox driver to support Xbox One controllers and a patch to better handle Synaptics profile sensors found in Cr-48 Chromebooks that should not affect any other devices" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: edt-ft5x06 - remove superfluous assignment Input: xpad - add support for Xbox One controllers Input: atmel_mxt_ts - fix a few issues reported by Coverity Input: atmel_mxt_ts - split config update a bit Input: atmel_mxt_ts - simplify mxt_initialize a bit Input: joystick - use get_cycles on ARMv8 Input: wacom - fix compiler warning if !CONFIG_PM Input: cap1106 - allow changing key mapping from userspace Input: synaptics - use firmware data for Cr-48 Input: synaptics - properly initialize slots for semi-MT Input: MT - make slot cleanup callable outside mt_sync_frame() Input: atmel_mxt_ts - mXT224 DMA quirk was fixed in firmware v2.0.AA
2014-08-16Merge branch 'linux_next' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac Pull EDAC updates from Mauro Carvalho Chehab. * 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: sb_edac: add support for Haswell based systems sb_edac: Fix mix tab/spaces alignments edac: add DDR4 and RDDR4 sb_edac: remove bogus assumption on mc ordering sb_edac: make minimal use of channel_mask sb_edac: fix socket detection on Ivy Bridge controllers sb_edac: update Kconfig description sb_edac: search devices using product id sb_edac: make RIR limit retrieval per model sb_edac: make node id retrieval per model sb_edac: make memory type detection per memory controller
2014-08-15blk-mq: get rid of unused BLK_MQ_F_SHOULD_SORT flagJens Axboe1-4/+3
We used to use this for determining whether to sort the dispatch list, but it's unused now. Signed-off-by: Jens Axboe <axboe@fb.com>
2014-08-15mac80211: don't duplicate station QoS capability dataJohannes Berg1-1/+1
We currently track the QoS capability twice: for all peer stations in the WLAN_STA_WME flag, and for any clients associated to an AP interface separately for drivers in the sta->sta.wme field. Remove the WLAN_STA_WME flag and track the capability only in the driver-visible field, getting rid of the limitation that the field is only valid in AP mode. Reviewed-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-15regulatory: add NUL to alpha2Eliad Peller1-1/+1
alpha2 is defined as 2-chars array, but is used in multiple places as string (e.g. with nla_put_string calls), which might leak kernel data. Solve it by simply adding an extra char for the NULL terminator, making such operations safe. Cc: stable@vger.kernel.org Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-15Merge tag 'pm+acpi-3.17-rc1-2' of ↵Linus Torvalds1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: "These are a couple of regression fixes, cpuidle menu governor optimizations, fixes for ACPI proccessor and battery drivers, hibernation fix to avoid problems related to the e820 memory map, fixes for a few cpufreq drivers and a new version of the suspend profiling tool analyze_suspend.py. Specifics: - Fix for an ACPI-based device hotplug regression introduced in 3.14 that causes a kernel panic to trigger when memory hot-remove is attempted with CONFIG_ACPI_HOTPLUG_MEMORY unset from Tang Chen - Fix for a cpufreq regression introduced in 3.16 that triggers a "sleeping function called from invalid context" bug in dev_pm_opp_init_cpufreq_table() from Stephen Boyd - ACPI battery driver fix for a warning message added in 3.16 that prints silly stuff sometimes from Mariusz Ceier - Hibernation fix for safer handling of mismatches in the 820 memory map between the configurations during image creation and during the subsequent restore from Chun-Yi Lee - ACPI processor driver fix to handle CPU hotplug notifications correctly during system suspend/resume from Lan Tianyu - Series of four cpuidle menu governor cleanups that also should speed it up a bit from Mel Gorman - Fixes for the speedstep-smi, integrator, cpu0 and arm_big_little cpufreq drivers from Hans Wennborg, Himangi Saraogi, Markus Pargmann and Uwe Kleine-König - Version 3.0 of the analyze_suspend.py suspend profiling tool from Todd E Brandt" * tag 'pm+acpi-3.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / battery: Fix warning message in acpi_battery_get_state() PM / tools: analyze_suspend.py: update to v3.0 cpufreq: arm_big_little: fix module license spec cpufreq: speedstep-smi: fix decimal printf specifiers ACPI / hotplug: Check scan handlers in acpi_scan_hot_remove() cpufreq: OPP: Avoid sleeping while atomic cpufreq: cpu0: Do not print error message when deferring cpufreq: integrator: Use set_cpus_allowed_ptr PM / hibernate: avoid unsafe pages in e820 reserved regions ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events cpuidle: menu: Lookup CPU runqueues less cpuidle: menu: Call nr_iowait_cpu less times cpuidle: menu: Use ktime_to_us instead of reinventing the wheel cpuidle: menu: Use shifts when calculating averages where possible
2014-08-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds4-14/+12
Pull networking fixes from David Miller: "I'm sending this out, in particular, to get the iwlwifi fix propagated: 1) Fix build due to missing include in i40e driver, from Lucas Tanure. 2) Memory leak in openvswitch port allocation, from Chirstoph Jaeger. 3) Check DMA mapping errors in myri10ge, from Stanislaw Gruszka. 4) Fix various deadlock scenerios in sunvnet driver, from Sowmini Varadhan. 5) Fix cxgb4i build failures with incompatible Kconfig settings of the driver vs ipv6, from Anish Bhatt. 6) Fix generation of ACK packet timestamps in the presence of TSO which will be split up, from Willem de Bruijn. 7) Don't enable sched scan in iwlwifi driver, it causes firmware crashes in some revisions. From Emmanuel Grumbach. 8) Revert a macvlan simplification that causes crashes. 9) Handle RTT calculations properly in the presence of repair'd SKBs, from Andrey Vagin. 10) SIT tunnel lookup uses wrong device index in compares, from Shmulik Ladkani. 11) Handle MTU reductions in TCP properly for ipv4 mapped ipv6 sockets, from Neal Cardwell. 12) Add missing annotations in rhashtable code, from Thomas Graf. 13) Fix false interpretation of two RTOs as being from the same TCP loss event in the FRTO code, from Neal Cardwell" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (42 commits) netlink: Annotate RCU locking for seq_file walker rhashtable: fix annotations for rht_for_each_entry_rcu() rhashtable: unexport and make rht_obj() static rhashtable: RCU annotations for next pointers tcp: fix ssthresh and undo for consecutive short FRTO episodes tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced() sit: Fix ipip6_tunnel_lookup device matching criteria net: ethernet: ibm: ehea: Remove duplicate object from Makefile net: xgene: Check negative return value of xgene_enet_get_ring_size() tcp: don't use timestamp from repaired skb-s to calculate RTT (v2) net: xilinx: Remove .owner field for driver Revert "macvlan: simplify the structure port" iwlwifi: mvm: disable scheduled scan to prevent firmware crash xen-netback: remove loop waiting function xen-netback: don't stop dealloc kthread too early xen-netback: move NAPI add/remove calls xen-netback: fix debugfs entry creation xen-netback: fix debugfs write length check net-timestamp: fix missing tcp fragmentation cases ...
2014-08-15rhashtable: fix annotations for rht_for_each_entry_rcu()Thomas Graf1-8/+4
Call rcu_deference_raw() directly from within rht_for_each_entry_rcu() as list_for_each_entry_rcu() does. Fixes the following sparse warnings: net/netlink/af_netlink.c:2906:25: expected struct rhash_head const *__mptr net/netlink/af_netlink.c:2906:25: got struct rhash_head [noderef] <asn:4>*<noident> Fixes: e341694e3eb57fc ("netlink: Convert netlink_lookup() to use RCU protected hash table") Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-15rhashtable: unexport and make rht_obj() staticThomas Graf1-1/+0
No need to export rht_obj(), all inner to outer object translations occur internally. It was intended to be used with rht_for_each() which now primarily serves as the iterator for rhashtable_remove_pprev() to effectively flush and free the full table. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-15rhashtable: RCU annotations for next pointersThomas Graf1-2/+2
Properly annotate next pointers as access is RCU protected in the lookup path. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-15tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logicHannes Frederic Sowa1-1/+1
tcp_tw_recycle heavily relies on tcp timestamps to build a per-host ordering of incoming connections and teardowns without the need to hold state on a specific quadruple for TCP_TIMEWAIT_LEN, but only for the last measured RTO. To do so, we keep the last seen timestamp in a per-host indexed data structure and verify if the incoming timestamp in a connection request is strictly greater than the saved one during last connection teardown. Thus we can verify later on that no old data packets will be accepted by the new connection. During moving a socket to time-wait state we already verify if timestamps where seen on a connection. Only if that was the case we let the time-wait socket expire after the RTO, otherwise normal TCP_TIMEWAIT_LEN will be used. But we don't verify this on incoming SYN packets. If a connection teardown was less than TCP_PAWS_MSL seconds in the past we cannot guarantee to not accept data packets from an old connection if no timestamps are present. We should drop this SYN packet. This patch closes this loophole. Please note, this patch does not make tcp_tw_recycle in any way more usable but only adds another safety check: Sporadic drops of SYN packets because of reordering in the network or in the socket backlog queues can happen. Users behing NAT trying to connect to a tcp_tw_recycle enabled server can get caught in blackholes and their connection requests may regullary get dropped because hosts behind an address translator don't have synchronized tcp timestamp clocks. tcp_tw_recycle cannot work if peers don't have tcp timestamps enabled. In general, use of tcp_tw_recycle is disadvised. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Florian Westphal <fw@strlen.de> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-15tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()Neal Cardwell3-1/+2
Make sure we use the correct address-family-specific function for handling MTU reductions from within tcp_release_cb(). Previously AF_INET6 sockets were incorrectly always using the IPv6 code path when sometimes they were handling IPv4 traffic and thus had an IPv4 dst. Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Diagnosed-by: Willem de Bruijn <willemb@google.com> Fixes: 563d34d057862 ("tcp: dont drop MTU reduction indications") Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-15tcp: don't use timestamp from repaired skb-s to calculate RTT (v2)Andrey Vagin1-1/+3
We don't know right timestamp for repaired skb-s. Wrong RTT estimations isn't good, because some congestion modules heavily depends on it. This patch adds the TCPCB_REPAIRED flag, which is included in TCPCB_RETRANS. Thanks to Eric for the advice how to fix this issue. This patch fixes the warning: [ 879.562947] WARNING: CPU: 0 PID: 2825 at net/ipv4/tcp_input.c:3078 tcp_ack+0x11f5/0x1380() [ 879.567253] CPU: 0 PID: 2825 Comm: socket-tcpbuf-l Not tainted 3.16.0-next-20140811 #1 [ 879.567829] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 879.568177] 0000000000000000 00000000c532680c ffff880039643d00 ffffffff817aa2d2 [ 879.568776] 0000000000000000 ffff880039643d38 ffffffff8109afbd ffff880039d6ba80 [ 879.569386] ffff88003a449800 000000002983d6bd 0000000000000000 000000002983d6bc [ 879.569982] Call Trace: [ 879.570264] [<ffffffff817aa2d2>] dump_stack+0x4d/0x66 [ 879.570599] [<ffffffff8109afbd>] warn_slowpath_common+0x7d/0xa0 [ 879.570935] [<ffffffff8109b0ea>] warn_slowpath_null+0x1a/0x20 [ 879.571292] [<ffffffff816d0a05>] tcp_ack+0x11f5/0x1380 [ 879.571614] [<ffffffff816d10bd>] tcp_rcv_established+0x1ed/0x710 [ 879.571958] [<ffffffff816dc9da>] tcp_v4_do_rcv+0x10a/0x370 [ 879.572315] [<ffffffff81657459>] release_sock+0x89/0x1d0 [ 879.572642] [<ffffffff816c81a0>] do_tcp_setsockopt.isra.36+0x120/0x860 [ 879.573000] [<ffffffff8110a52e>] ? rcu_read_lock_held+0x6e/0x80 [ 879.573352] [<ffffffff816c8912>] tcp_setsockopt+0x32/0x40 [ 879.573678] [<ffffffff81654ac4>] sock_common_setsockopt+0x14/0x20 [ 879.574031] [<ffffffff816537b0>] SyS_setsockopt+0x80/0xf0 [ 879.574393] [<ffffffff817b40a9>] system_call_fastpath+0x16/0x1b [ 879.574730] ---[ end trace a17cbc38eb8c5c00 ]--- v2: moving setting of skb->when for repaired skb-s in tcp_write_xmit, where it's set for other skb-s. Fixes: 431a91242d8d ("tcp: timestamp SYN+DATA messages") Fixes: 740b0f1841f6 ("tcp: switch rtt estimations to usec resolution") Cc: Eric Dumazet <edumazet@google.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-14Merge tag 'rdma-for-linus' of ↵Linus Torvalds7-2/+109
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull infiniband/rdma updates from Roland Dreier: "Main set of InfiniBand/RDMA updates for 3.17 merge window: - MR reregistration support - MAD support for RMPP in userspace - iSER and SRP initiator updates - ocrdma hardware driver updates - other fixes..." * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (52 commits) IB/srp: Fix return value check in srp_init_module() RDMA/ocrdma: report asic-id in query device RDMA/ocrdma: Update sli data structure for endianness RDMA/ocrdma: Obtain SL from device structure RDMA/uapi: Include socket.h in rdma_user_cm.h IB/srpt: Handle GID change events IB/mlx5: Use ARRAY_SIZE instead of sizeof/sizeof[0] IB/mlx4: Use ARRAY_SIZE instead of sizeof/sizeof[0] RDMA/amso1100: Check for integer overflow in c2_alloc_cq_buf() IPoIB: Remove unnecessary test for NULL before debugfs_remove() IB/mad: Add user space RMPP support IB/mad: add new ioctl to ABI to support new registration options IB/mad: Add dev_notice messages for various umad/mad registration failures IB/mad: Update module to [pr|dev]_* style print messages IB/ipoib: Avoid multicast join attempts with invalid P_key IB/umad: Update module to [pr|dev]_* style print messages IB/ipoib: Avoid flushing the workqueue from worker context IB/ipoib: Use P_Key change event instead of P_Key polling mechanism IB/ipath: Add P_Key change event support mlx4_core: Add support for secure-host and SMP firewall ...
2014-08-14Merge branch 'next' of ↵Linus Torvalds2-0/+91
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull more powerpc updates from Ben Herrenschmidt: "Here are some more powerpc bits for 3.17, essentially fixes. The biggest series, also aimed at -stable, is from Aneesh and is the result of weeks and weeks of debugging to find out why the heck or THP implementation was occasionally triggering multi-hit errors in our level 1 TLB. It ended up being a combination of issues including subtleties as to how we should invalidate those special 'MPSS' pages we use to allow the use of 16M pages inside 4K/64K "base page size" segments (you really have to love our MMU !) Another interesting one in the "OMG" category is the series from Michael adding memory barriers to spin_is_locked(). That's also the result of many days of debugging to figure out why the semaphore code would occasionally crash in ways that made no sense. It ended up being some creative lock stacking that was defeated by the fact that our locks allow a load inside the locked section to be re-ordered with the load of the lock value itself (I'm still of two mind about whether to kill that once and for all by putting a heavier barrier back into our lock implementation...). The fixes come with a long explanation in the cset comments, feel free to read it if you feel like having a headache today" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits) powerpc/thp: Add tracepoints to track hugepage invalidate powerpc/mm: Use read barrier when creating real_pte powerpc/thp: Use ACCESS_ONCE when loading pmdp powerpc/thp: Invalidate with vpn in loop powerpc/thp: Handle combo pages in invalidate powerpc/thp: Invalidate old 64K based hash page mapping before insert of 4k pte powerpc/thp: Don't recompute vsid and ssize in loop on invalidate powerpc/thp: Add write barrier after updating the valid bit powerpc: reorder per-cpu NUMA information's initialization powerpc/perf/hv-24x7: Use kmem_cache_free powerpc/pseries/hvcserver: Fix endian issue in hvcs_get_partner_info powerpc: Hard disable interrupts in xmon powerpc: remove duplicate definition of TEXASR_FS powerpc/pseries: Avoid deadlock on removing ddw powerpc/pseries: Failure on removing device node powerpc/boot: Use correct zlib types for comparison powerpc/powernv: Interface to register/unregister opal dump region printk: Add function to return log buffer address and size powerpc: Add POWER8 features to CPU_FTRS_POSSIBLE/ALWAYS powerpc/ppc476: Disable BTAC ...
2014-08-14Merge branches 'core', 'cxgb4', 'ipoib', 'iser', 'iwcm', 'mad', 'misc', ↵Roland Dreier5-1/+68
'mlx4', 'mlx5', 'ocrdma' and 'srp' into for-next
2014-08-14Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds3-10/+91
Pull device tree updates from Grant Likely: "The branch contains the following device tree changes the v3.17 merge window: Group changes to the device tree. In preparation for adding device tree overlay support, OF_DYNAMIC is reworked so that a set of device tree changes can be prepared and applied to the tree all at once. OF_RECONFIG notifiers see the most significant change here so that users always get a consistent view of the tree. Notifiers generation is moved from before a change to after it, and notifiers for a group of changes are emitted after the entire block of changes have been applied Automatic console selection from DT. Console drivers can now use of_console_check() to see if the device node is specified as a console device. If so then it gets added as a preferred console. UART devices get this support automatically when uart_add_one_port() is called. DT unit tests no longer depend on pre-loaded data in the device tree. Data is loaded dynamically at the start of unit tests, and then unloaded again when the tests have completed. Also contains a few bugfixes for reserved regions and early memory setup" * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: (21 commits) of: Fixing OF Selftest build error drivers: of: add automated assignment of reserved regions to client devices of: Use proper types for checking memory overflow of: typo fix in __of_prop_dup() Adding selftest testdata dynamically into live tree of: Add todo tasklist for Devicetree of: Transactional DT support. of: Reorder device tree changes and notifiers of: Move dynamic node fixups out of powerpc and into common code of: Make sure attached nodes don't carry along extra children of: Make devicetree sysfs update functions consistent. of: Create unlocked versions of node and property add/remove functions OF: Utility helper functions for dynamic nodes of: Move CONFIG_OF_DYNAMIC code into a separate file of: rename of_aliases_mutex to just of_mutex of/platform: Fix of_platform_device_destroy iteration of devices of: Migrate of_find_node_by_name() users to for_each_node_by_name() tty: Update hypervisor tty drivers to use core stdout parsing code. arm/versatile: Add the uart as the stdout device. of: Enable console on serial ports specified by /chosen/stdout-path ...
2014-08-14Merge tag 'vfio-v3.17-rc1' of git://github.com/awilliam/linux-vfioLinus Torvalds1-3/+3
Pull VFIO updates from Alex Williamson: - enable support for bus reset on device release - fixes for EEH support * tag 'vfio-v3.17-rc1' of git://github.com/awilliam/linux-vfio: drivers/vfio: Enable VFIO if EEH is not supported drivers/vfio: Allow EEH to be built as module drivers/vfio: Fix EEH build error vfio-pci: Attempt bus/slot reset on release vfio-pci: Use mutex around open, release, and remove vfio-pci: Release devices with BusMaster disabled
2014-08-14Merge tag 'mmc-v3.17-1' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds3-3/+3
Pull MMC updates from Ulf Hansson: "Me and Chris Ball decided to try out using my MMC tree as the primary one, to simplify handling of patches. This pull does thus contains all the MMC patches for 3.17 rc1, no pull from Chris this time. Details: MMC core: - forward compatibility for eMMC - fix some blacklisted cards with broken secure discard MMC host: - mmci: Add support for Qualcomm variant - mmci: Fix regression for arm_variant - sdhci: Various fixes and cleanups - sdhci: Improve external VDD regulator support - sdhci: Support for DDR50 1.8V mode for BayTrail - sdhci-st: Add driver for ST SDHCI controller - sh-mmcif: DMA fixes - omap_hsmmc: Add support for SDIO interrupts - sdhci-pci: Add support for Intel Quark X1000 - dw_mmc: Update the reset sequence - s3cmci: port DMA code to dmaengine API" * tag 'mmc-v3.17-1' of git://git.linaro.org/people/ulf.hansson/mmc: (67 commits) mmc: dw_mmc: modify the dt-binding for removing slot-node and supports-highspeed mmc: dw_mmc: Slot quirk "disable-wp" is deprecated. mmc: mmci: Reverse IRQ handling for the arm_variant mmc: mmci: Move all CMD irq handling to mmci_cmd_irq() mmc: mmci: Remove redundant check of status for DATA irq mmc: dw_mmc: change to use recommended reset procedure mmc: sdhci-pxav3: Use devm_* managed helpers mmc: tmio: Configure DMA slave bus width mmc: sh_mmcif: Configure DMA slave bus width mmc: sh_mmcif: Fix DMA slave address configuration mmc: sh_mmcif: Document DT bindings mmc: sdhci-pci: remove PCI PM functions in suspend/resume callback mmc: Do not advertise secure discard if it is blacklisted mmc: sdhci-msm: Get COMPILE_TEST support mmc: sdhci-msm: Remove unnecessary header file inclusion mmc: sdhci-msm: Fix the binding example mmc: sdhci: add DDR50 1.8V mode support for BayTrail eMMC Controller mmc: sdhci: Preset value not supported in Baytrail eMMC mmc: MMC_USDHI6ROL0 should depend on HAS_DMA mmc: MMC_SH_MMCIF should depend on HAS_DMA ...
2014-08-14Merge branch 'for-3.17/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds7-17/+38
Pull block driver changes from Jens Axboe: "Nothing out of the ordinary here, this pull request contains: - A big round of fixes for bcache from Kent Overstreet, Slava Pestov, and Surbhi Palande. No new features, just a lot of fixes. - The usual round of drbd updates from Andreas Gruenbacher, Lars Ellenberg, and Philipp Reisner. - virtio_blk was converted to blk-mq back in 3.13, but now Ming Lei has taken it one step further and added support for actually using more than one queue. - Addition of an explicit SG_FLAG_Q_AT_HEAD for block/bsg, to compliment the the default behavior of adding to the tail of the queue. From Douglas Gilbert" * 'for-3.17/drivers' of git://git.kernel.dk/linux-block: (86 commits) bcache: Drop unneeded blk_sync_queue() calls bcache: add mutex lock for bch_is_open bcache: Correct printing of btree_gc_max_duration_ms bcache: try to set b->parent properly bcache: fix memory corruption in init error path bcache: fix crash with incomplete cache set bcache: Fix more early shutdown bugs bcache: fix use-after-free in btree_gc_coalesce() bcache: Fix an infinite loop in journal replay bcache: fix crash in bcache_btree_node_alloc_fail tracepoint bcache: bcache_write tracepoint was crashing bcache: fix typo in bch_bkey_equal_header bcache: Allocate bounce buffers with GFP_NOWAIT bcache: Make sure to pass GFP_WAIT to mempool_alloc() bcache: fix uninterruptible sleep in writeback thread bcache: wait for buckets when allocating new btree root bcache: fix crash on shutdown in passthrough mode bcache: fix lockdep warnings on shutdown bcache allocator: send discards with correct size bcache: Fix to remove the rcu_sched stalls. ...
2014-08-14Merge branch 'for-3.17/core' of git://git.kernel.dk/linux-blockLinus Torvalds2-1/+4
Pull block core bits from Jens Axboe: "Small round this time, after the massive blk-mq dump for 3.16. This pull request contains: - Fixes for max_sectors overflow in ioctls from Akinoby Mita. - Partition off-by-one bug fix in aix partitions from Dan Carpenter. - Various small partition cleanups from Fabian Frederick. - Fix for the block integrity code sometimes returning the wrong vector count from Gu Zheng. - Cleanup an re-org of the blk-mq queue enter/exit percpu counters from Tejun. Dependent on the percpu pull for 3.17 (which was in the block tree too), that you have already pulled in. - A blkcg oops fix, also from Tejun" * 'for-3.17/core' of git://git.kernel.dk/linux-block: partitions: aix.c: off by one bug blkcg: don't call into policy draining if root_blkg is already gone Revert "bio: modify __bio_add_page() to accept pages that don't start a new segment" bio: modify __bio_add_page() to accept pages that don't start a new segment block: fix SG_[GS]ET_RESERVED_SIZE ioctl when max_sectors is huge block: fix BLKSECTGET ioctl when max_sectors is greater than USHRT_MAX block/partitions/efi.c: kerneldoc fixing block/partitions/msdos.c: code clean-up block/partitions/amiga.c: replace nolevel printk by pr_err block/partitions/aix.c: replace count*size kzalloc by kcalloc bio-integrity: add "bip_max_vcnt" into struct bio_integrity_payload blk-mq: use percpu_ref for mq usage count blk-mq: collapse __blk_mq_drain_queue() into blk_mq_freeze_queue() blk-mq: decouble blk-mq freezing from generic bypassing block, blk-mq: draining can't be skipped even if bypass_depth was non-zero blk-mq: fix a memory ordering bug in blk_mq_queue_enter()
2014-08-14locking,arch: Rewrite generic atomic supportPeter Zijlstra2-100/+112
Rewrite generic atomic support to only require cmpxchg(), generate all other primitives from that. Furthermore reduce the endless repetition for all these primitives to a few CPP macros. This way we get more for less lines. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140508135852.940119622@infradead.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Howells <dhowells@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-14Bluetooth: Remove unused l2cap_conn->security_timerJohan Hedberg1-1/+0
Now that there are no-longer any users for l2cap_conn->security_timer we can go ahead and simply remove it. The patch makes initialization of the conn->info_timer unconditional since it's better not to leave any l2cap_conn data structures uninitialized no matter what the underlying transport. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Add public l2cap_conn_shutdown() API to request disconnectionJohan Hedberg1-0/+4
Since we no-longer do special handling of SMP within l2cap_core.c we don't have any code for calling l2cap_conn_del() when smp.c doesn't like the data it gets. At the same time we cannot simply export l2cap_conn_del() since it will try to lock the channels it calls into whereas we already hold the lock in the smp.c l2cap_chan callbacks (i.e. it'd lead to a deadlock). This patch adds a new l2cap_conn_shutdown() API which is very similar to l2cap_conn_del() except that it defers the call to l2cap_conn_del() through a workqueue, thereby making it safe to use it from an L2CAP channel callback. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Convert SMP to use l2cap_chan infrastructureJohan Hedberg1-1/+0
Now that we have all the necessary pieces in place we can fully convert SMP to use the L2CAP channel infrastructure. This patch adds the necessary callbacks and removes the now unneeded conn->smp_chan pointer. One notable behavioral change in this patch comes from the following code snippet: - case L2CAP_CID_SMP: - if (smp_sig_channel(conn, skb)) - l2cap_conn_del(conn->hcon, EACCES); This piece of code was essentially forcing a disconnection if garbage SMP data was received. The l2cap_conn_del() function is private to l2cap_conn.c so we don't have access to it anymore when using the L2CAP channel callbacks. Therefore, the behavior of the new code is simply to return errors in the recv() callback (which is simply the old smp_sig_channel()), but no disconnection will occur. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Make AES crypto context private to SMPJohan Hedberg1-1/+0
Now that we have per-adapter SMP data thanks to the root SMP L2CAP channel we can take advantage of it and attach the AES crypto context (only used for SMP) to it. This means that the smp_irk_matches() and smp_generate_rpa() function can be converted to internally handle the AES context. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Add SMP L2CAP channel skeletonJohan Hedberg2-0/+2
This patch creates the initial SMP L2CAP channels and a skeleton for their callbacks. There is one per-adapter channel created upon adapter registration, and then one channel per-connection created through the new_connection callback. The channels are registered with the reserved CID 0x1f for now in order to not conflict with existing SMP functionality. Once everything is in place the value can be changed to what it should be, i.e. L2CAP_CID_SMP. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Add more L2CAP convenience callbacksJohan Hedberg1-0/+25
In preparation for converting SMP to use l2cap_chan it's useful to add a few more callback helpers so that smp.c won't need to define all of its own. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Resume BT_CONNECTED state after LE security elevationJohan Hedberg1-0/+1
The LE ATT socket uses a special trick where it temporarily sets BT_CONFIG state for the duration of a security level elevation. In order to not require special hacks for going back to BT_CONNECTED state in the l2cap_core.c code the most reasonable place to resume the state is the resume callback. This patch adds a new flag to track the pending security level change and ensures that the state is set back to BT_CONNECTED in the resume callback in case the flag is set. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Create unified helper function for updating page scanJohan Hedberg1-0/+5
Similar to our hci_update_background_scan() function we can simplify a lot of code by creating a unified helper function for doing page scan updates. This patch adds such a function to hci_core.c and updates all the relevant places to use it. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Bluetooth: Add convenience function to check for pending power offJohan Hedberg1-0/+1
There are several situations where we're interested in knowing whether we're currently in the process of powering off an adapter. This patch adds a convenience function for the purpose and makes it public since we'll soon need to access it from hci_event.c as well. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-08-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2-6/+1
Pull networking fixes from David Miller: "Several networking final fixes and tidies for the merge window: 1) Changes during the merge window unintentionally took away the ability to build bluetooth modular, fix from Geert Uytterhoeven. 2) Several phy_node reference count bug fixes from Uwe Kleine-König. 3) Fix ucc_geth build failures, also from Uwe Kleine-König. 4) Fix klog false positivies when netlink messages go to network taps, by properly resetting the network header. Fix from Daniel Borkmann. 5) Sizing estimate of VF netlink messages is too small, from Jiri Benc. 6) New APM X-Gene SoC ethernet driver, from Iyappan Subramanian. 7) VLAN untagging is erroneously dependent upon whether the VLAN module is loaded or not, but there are generic dependencies that matter wrt what can be expected as the SKB enters the stack. Make the basic untagging generic code, and do it unconditionally. From Vlad Yasevich. 8) xen-netfront only has so many slots in it's transmit queue so linearize packets that have too many frags. From Zoltan Kiss. 9) Fix suspend/resume PHY handling in bcmgenet driver, from Florian Fainelli" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (55 commits) net: bcmgenet: correctly resume adapter from Wake-on-LAN net: bcmgenet: update UMAC_CMD only when link is detected net: bcmgenet: correctly suspend and resume PHY device net: bcmgenet: request and enable main clock earlier net: ethernet: myricom: myri10ge: myri10ge.c: Cleaning up missing null-terminate after strncpy call xen-netfront: Fix handling packets on compound pages with skb_linearize net: fec: Support phys probed from devicetree and fixed-link smsc: replace WARN_ON() with WARN_ON_SMP() xen-netback: Don't deschedule NAPI when carrier off net: ethernet: qlogic: qlcnic: Remove duplicate object file from Makefile wan: wanxl: Remove typedefs from struct names m68k/atari: EtherNEC - ethernet support (ne) net: ethernet: ti: cpmac.c: Cleaning up missing null-terminate after strncpy call hdlc: Remove typedefs from struct names airo_cs: Remove typedef local_info_t atmel: Remove typedef atmel_priv_ioctl com20020_cs: Remove typedef com20020_dev_t ethernet: amd: Remove typedef local_info_t net: Always untag vlan-tagged traffic on input. drivers: net: Add APM X-Gene SoC ethernet driver support. ...
2014-08-14Merge tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds8-35/+34
Pull NFS client updates from Trond Myklebust: "Highlights include: - stable fix for a bug in nfs3_list_one_acl() - speed up NFS path walks by supporting LOOKUP_RCU - more read/write code cleanups - pNFS fixes for layout return on close - fixes for the RCU handling in the rpcsec_gss code - more NFS/RDMA fixes" * tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits) nfs: reject changes to resvport and sharecache during remount NFS: Avoid infinite loop when RELEASE_LOCKOWNER getting expired error SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred NFS: fix two problems in lookup_revalidate in RCU-walk NFS: allow lockless access to access_cache NFS: teach nfs_lookup_verify_inode to handle LOOKUP_RCU NFS: teach nfs_neg_need_reval to understand LOOKUP_RCU NFS: support RCU_WALK in nfs_permission() sunrpc/auth: allow lockless (rcu) lookup of credential cache. NFS: prepare for RCU-walk support but pushing tests later in code. NFS: nfs4_lookup_revalidate: only evaluate parent if it will be used. NFS: add checks for returned value of try_module_get() nfs: clear_request_commit while holding i_lock pnfs: add pnfs_put_lseg_async pnfs: find swapped pages on pnfs commit lists too nfs: fix comment and add warn_on for PG_INODE_REF nfs: check wait_on_bit_lock err in page_group_lock sunrpc: remove "ec" argument from encrypt_v2 operation sunrpc: clean up sparse endianness warnings in gss_krb5_wrap.c sunrpc: clean up sparse endianness warnings in gss_krb5_seal.c ...
2014-08-14Merge branch 'for_linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull quota, reiserfs, UDF updates from Jan Kara: "Scalability improvements for quota, a few reiserfs fixes, and couple of misc cleanups (udf, ext2)" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: reiserfs: Fix use after free in journal teardown reiserfs: fix corruption introduced by balance_leaf refactor udf: avoid redundant memcpy when writing data in ICB fs/udf: re-use hex_asc_upper_{hi,lo} macros fs/quota: kernel-doc warning fixes udf: use linux/uaccess.h fs/ext2/super.c: Drop memory allocation cast quota: remove dqptr_sem quota: simplify remove_inode_dquot_ref() quota: avoid unnecessary dqget()/dqput() calls quota: protect Q_GETFMT by dqonoff_mutex
2014-08-14Merge branch 'for-linus' of ↵Linus Torvalds2-25/+7
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "There is a lot of refactoring and hardening of the libceph and rbd code here from Ilya that fix various smaller bugs, and a few more important fixes with clone overlap. The main fix is a critical change to the request_fn handling to not sleep that was exposed by the recent mutex changes (which will also go to the 3.16 stable series). Yan Zheng has several fixes in here for CephFS fixing ACL handling, time stamps, and request resends when the MDS restarts. Finally, there are a few cleanups from Himangi Saraogi based on Coccinelle" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (39 commits) libceph: set last_piece in ceph_msg_data_pages_cursor_init() correctly rbd: remove extra newlines from rbd_warn() messages rbd: allocate img_request with GFP_NOIO instead GFP_ATOMIC rbd: rework rbd_request_fn() ceph: fix kick_requests() ceph: fix append mode write ceph: fix sizeof(struct tYpO *) typo ceph: remove redundant memset(0) rbd: take snap_id into account when reading in parent info rbd: do not read in parent info before snap context rbd: update mapping size only on refresh rbd: harden rbd_dev_refresh() and callers a bit rbd: split rbd_dev_spec_update() into two functions rbd: remove unnecessary asserts in rbd_dev_image_probe() rbd: introduce rbd_dev_header_info() rbd: show the entire chain of parent images ceph: replace comma with a semicolon rbd: use rbd_segment_name_free() instead of kfree() ceph: check zero length in ceph_sync_read() ceph: reset r_resend_mds after receiving -ESTALE ...
2014-08-13spi: Add missing kerneldoc bitsThierry Reding1-0/+7
These are all arguments or fields that got added without updating the kerneldoc comments. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-13locking/lockdep: Restrict the use of recursive read_lock() with qrwlockWaiman Long1-1/+9
Unlike the original unfair rwlock implementation, queued rwlock will grant lock according to the chronological sequence of the lock requests except when the lock requester is in the interrupt context. Consequently, recursive read_lock calls will now hang the process if there is a write_lock call somewhere in between the read_lock calls. This patch updates the lockdep implementation to look for recursive read_lock calls. A new read state (3) is used to mark those read_lock call that cannot be recursively called except in the interrupt context. The new read state does exhaust the 2 bits available in held_lock:read bit field. The addition of any new read state in the future may require a redesign of how all those bits are squeezed together in the held_lock structure. Signed-off-by: Waiman Long <Waiman.Long@hp.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Rik van Riel <riel@redhat.com> Cc: Scott J Norton <scott.norton@hp.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1407345722-61615-2-git-send-email-Waiman.Long@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org>