pm24.git/include/linux, branch v4.6-rc7

Merge tag 'pm+acpi-4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2016-05-06T18:58:45Z

Pull power management and ACPI fixes from Rafael Wysocki: "Fixes for problems introduced or discovered recently (intel_pstate, sti-cpufreq, ARM64 cpuidle, Operating Performance Points framework, generic device properties framework) and one fix for a hotplug-related deadlock in ACPICA that's been there forever, but is nasty enough. Specifics: - Fix for a recent regression in the intel_pstate driver causing it to fail to restore the HWP (HW-managed P-states) configuration of the boot CPU after suspend-to-RAM (Rafael Wysocki). - Fix for two recent regressions in the intel_pstate driver, one that can trigger a divide by zero if the driver is accessed via sysfs before it manages to take the first sample and one causing it to fail to update a structure field used in a trace point, so the information coming from it is less useful (Rafael Wysocki). - Fix for a problem in the sti-cpufreq driver introduced during the 4.5 cycle that causes it to break CPU PM in multi-platform kernels by registering cpufreq-dt (which subsequently doesn't work) unconditionally and preventing the driver that would actually work from registering (Sudeep Holla). - Stable-candidate fix for an ARM64 cpuidle issue causing idle state usage counters to be incorrectly updated for idle states that were not entered due to errors (James Morse). - Fix for a recently introduced issue in the OPP (Operating Performance Points) framework causing it to print bogus error messages for missing optional regulators (Viresh Kumar). - Fix for a recently introduced issue in the generic device properties framework that may cause it to attempt to dereferece and invalid pointer in some cases (Heikki Krogerus). - Fix for a deadlock in the ACPICA core that may be triggered by device (eg Thunderbolt) hotplug (Prarit Bhargava)" * tag 'pm+acpi-4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / OPP: Remove useless check ACPICA: Dispatcher: Update thread ID for recursive method calls intel_pstate: Fix intel_pstate_get() cpufreq: intel_pstate: Fix HWP on boot CPU after system resume cpufreq: st: enable selective initialization based on the platform ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value device property: Avoid potential dereferences of invalid pointers

Merge branches 'acpica-fixes' and 'device-properties-fixes'

2016-05-06T11:15:52Z

* acpica-fixes: ACPICA: Dispatcher: Update thread ID for recursive method calls * device-properties-fixes: device property: Avoid potential dereferences of invalid pointers

mm: thp: kvm: fix memory corruption in KVM with THP enabled

2016-05-06T00:38:53Z

After the THP refcounting change, obtaining a compound pages from get_user_pages() no longer allows us to assume the entire compound page is immediately mappable from a secondary MMU. A secondary MMU doesn't want to call get_user_pages() more than once for each compound page, in order to know if it can map the whole compound page. So a secondary MMU needs to know from a single get_user_pages() invocation when it can map immediately the entire compound page to avoid a flood of unnecessary secondary MMU faults and spurious atomic_inc()/atomic_dec() (pages don't have to be pinned by MMU notifier users). Ideally instead of the page->_mapcount < 1 check, get_user_pages() should return the granularity of the "page" mapping in the "mm" passed to get_user_pages(). However it's non trivial change to pass the "pmd" status belonging to the "mm" walked by get_user_pages up the stack (up to the caller of get_user_pages). So the fix just checks if there is not a single pte mapping on the page returned by get_user_pages, and in turn if the caller can assume that the whole compound page is mapped in the current "mm" (in a pmd_trans_huge()). In such case the entire compound page is safe to map into the secondary MMU without additional get_user_pages() calls on the surrounding tail/head pages. In addition of being faster, not having to run other get_user_pages() calls also reduces the memory footprint of the secondary MMU fault in case the pmd split happened as result of memory pressure. Without this fix after a MADV_DONTNEED (like invoked by QEMU during postcopy live migration or balloning) or after generic swapping (with a failure in split_huge_page() that would only result in pmd splitting and not a physical page split), KVM would map the whole compound page into the shadow pagetables, despite regular faults or userfaults (like UFFDIO_COPY) may map regular pages into the primary MMU as result of the pte faults, leading to the guest mode and userland mode going out of sync and not working on the same memory at all times. Any other secondary MMU notifier manager (KVM is just one of the many MMU notifier users) will need the same information if it doesn't want to run a flood of get_user_pages_fast and it can support multiple granularity in the secondary MMU mappings, so I think it is justified to be exposed not just to KVM. The other option would be to move transparent_hugepage_adjust to mm/huge_memory.c but that currently has all kind of KVM data structures in it, so it's definitely not a cut-and-paste work, so I couldn't do a fix as cleaner as this one for 4.6. Signed-off-by: Andrea Arcangeli Cc: "Dr. David Alan Gilbert" Cc: "Kirill A. Shutemov" Cc: "Li, Liang Z" Cc: Amit Shah Cc: Paolo Bonzini Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/mport_cdev: fix uapi type definitions

2016-05-06T00:38:53Z

Fix problems in uapi definitions reported by Gabriel Laskar: (see https://lkml.org/lkml/2016/4/5/205 for details) - move public header file rio_mport_cdev.h to include/uapi/linux directory - change types in data structures passed as IOCTL parameters - improve parameter checking in some IOCTL service routines Signed-off-by: Alexandre Bounine Reported-by: Gabriel Laskar Tested-by: Barry Wood Cc: Gabriel Laskar Cc: Matt Porter Cc: Aurelien Jacquiot Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: memcontrol: let v2 cgroups follow changes in system swappiness

2016-05-06T00:38:53Z

Cgroup2 currently doesn't have a per-cgroup swappiness setting. We might want to add one later - that's a different discussion - but until we do, the cgroups should always follow the system setting. Otherwise it will be unchangeably set to whatever the ancestor inherited from the system setting at the time of cgroup creation. Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Acked-by: Vladimir Davydov Cc: [4.5] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-05-03T22:07:50Z

Pull networking fixes from David Miller: "Some straggler bug fixes: 1) Batman-adv DAT must consider VLAN IDs when choosing candidate nodes, from Antonio Quartulli. 2) Fix botched reference counting of vlan objects and neigh nodes in batman-adv, from Sven Eckelmann. 3) netem can crash when it sees GSO packets, the fix is to segment then upon ->enqueue. Fix from Neil Horman with help from Eric Dumazet. 4) Fix VXLAN dependencies in mlx5 driver Kconfig, from Matthew Finlay. 5) Handle VXLAN ops outside of rcu lock, via a workqueue, in mlx5, since it can sleep. Fix also from Matthew Finlay. 6) Check mdiobus_scan() return values properly in pxa168_eth and macb drivers. From Sergei Shtylyov. 7) If the netdevice doesn't support checksumming, disable segmentation. From Alexandery Duyck. 8) Fix races between RDS tcp accept and sending, from Sowmini Varadhan. 9) In macb driver, probe MDIO bus before we register the netdev, otherwise we can try to open the device before it is really ready for that. Fix from Florian Fainelli. 10) Netlink attribute size for ILA "tunnels" not calculated properly, fix from Nicolas Dichtel" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: ipv6/ila: fix nlsize calculation for lwtunnel net: macb: Probe MDIO bus before registering netdev RDS: TCP: Synchronize accept() and connect() paths on t_conn_lock. RDS:TCP: Synchronize rds_tcp_accept_one with rds_send_xmit when resetting t_sock vxlan: Add checksum check to the features check function net: Disable segmentation if checksumming is not supported net: mvneta: Remove superfluous SMP function call macb: fix mdiobus_scan() error check pxa168_eth: fix mdiobus_scan() error check net/mlx5e: Use workqueue for vxlan ops net/mlx5e: Implement a mlx5e workqueue net/mlx5: Kconfig: Fix MLX5_EN/VXLAN build issue net/mlx5: Unmap only the relevant IO memory mapping netem: Segment GSO packets on enqueue batman-adv: Fix reference counting of hardif_neigh_node object for neigh_node batman-adv: Fix reference counting of vlan object for tt_local_entry batman-adv: B.A.T.M.A.N V - make sure iface is reactivated upon NETDEV_UP event batman-adv: fix DAT candidate selection (must use vid)

vxlan: Add checksum check to the features check function

2016-05-03T20:00:54Z

We need to perform an additional check on the inner headers to determine if we can offload the checksum for them. Previously this check didn't occur so we would generate an invalid frame in the case of an IPv6 header encapsulated inside of an IPv4 tunnel. To fix this I added a secondary check to vxlan_features_check so that we can verify that we can offload the inner checksum. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller

Minimal fix-up of bad hashing behavior of hash_64()

2016-05-02T20:01:51Z

This is a fairly minimal fixup to the horribly bad behavior of hash_64() with certain input patterns. In particular, because the multiplicative value used for the 64-bit hash was intentionally bit-sparse (so that the multiply could be done with shifts and adds on architectures without hardware multipliers), some bits did not get spread out very much. In particular, certain fairly common bit ranges in the input (roughly bits 12-20: commonly with the most information in them when you hash things like byte offsets in files or memory that have block factors that mean that the low bits are often zero) would not necessarily show up much in the result. There's a bigger patch-series brewing to fix up things more completely, but this is the fairly minimal fix for the 64-bit hashing problem. It simply picks a much better constant multiplier, spreading the bits out a lot better. NOTE! For 32-bit architectures, the bad old hash_64() remains the same for now, since 64-bit multiplies are expensive. The bigger hashing cleanup will replace the 32-bit case with something better. The new constants were picked by George Spelvin who wrote that bigger cleanup series. I just picked out the constants and part of the comment from that series. Cc: stable@vger.kernel.org Cc: George Spelvin Cc: Thomas Gleixner Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-05-02T16:40:42Z

Pull networking fixes from David Miller: 1) MODULE_FIRMWARE firmware string not correct for iwlwifi 8000 chips, from Sara Sharon. 2) Fix SKB size checks in batman-adv stack on receive, from Sven Eckelmann. 3) Leak fix on mac80211 interface add error paths, from Johannes Berg. 4) Cannot invoke napi_disable() with BH disabled in myri10ge driver, fix from Stanislaw Gruszka. 5) Fix sign extension problem when computing feature masks in net_gso_ok(), from Marcelo Ricardo Leitner. 6) lan78xx driver doesn't count packets and packet lengths in its statistics properly, fix from Woojung Huh. 7) Fix the buffer allocation sizes in pegasus USB driver, from Petko Manolov. 8) Fix refcount overflows in bpf, from Alexei Starovoitov. 9) Unified dst cache handling introduced a preempt warning in ip_tunnel, fix by resetting rather then setting the cached route. From Paolo Abeni. 10) Listener hash collision test fix in soreuseport, from Craig Gallak * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits) gre: do not pull header in ICMP error processing net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case tipc: only process unicast on intended node cxgb3: fix out of bounds read net/smscx5xx: use the device tree for mac address soreuseport: Fix TCP listener hash collision net: l2tp: fix reversed udp6 checksum flags ip_tunnel: fix preempt warning in ip tunnel creation/updating samples/bpf: fix trace_output example bpf: fix check_map_func_compatibility logic bpf: fix refcnt overflow drivers: net: cpsw: use of_phy_connect() in fixed-link case dt: cpsw: phy-handle, phy_id, and fixed-link are mutually exclusive drivers: net: cpsw: don't ignore phy-mode if phy-handle is used drivers: net: cpsw: fix segfault in case of bad phy-handle drivers: net: cpsw: fix parsing of phy-handle DT property in dual_emac config MAINTAINERS: net: Change maintainer for GRETH 10/100/1G Ethernet MAC device driver gre: reject GUE and FOU in collect metadata mode pegasus: fixes reported packet length pegasus: fixes URB buffer allocation size; ...

net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case

2016-05-02T01:34:01Z

Prior to commit d92cff89a0c8 ("net_dbg_ratelimited: turn into no-op when !DEBUG") the implementation of net_dbg_ratelimited() was buggy for both the DEBUG and CONFIG_DYNAMIC_DEBUG cases. The bug was that net_ratelimit() was being called and, despite returning true, nothing was being printed to the console. This resulted in messages like the following - "net_ratelimit: %d callbacks suppressed" with no other output nearby. After commit d92cff89a0c8 ("net_dbg_ratelimited: turn into no-op when !DEBUG") the bug is fixed for the DEBUG case. However, there's no output at all for CONFIG_DYNAMIC_DEBUG case. This patch restores debug output (if enabled) for the CONFIG_DYNAMIC_DEBUG case. Add a definition of net_dbg_ratelimited() for the CONFIG_DYNAMIC_DEBUG case. The implementation takes care to check that dynamic debugging is enabled before calling net_ratelimit(). Fixes: d92cff89a0c8 ("net_dbg_ratelimited: turn into no-op when !DEBUG") Signed-off-by: Tim Bingham Signed-off-by: David S. Miller