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2015-11-01Merge tag 'scsi-fixes' of ↵Linus Torvalds4-2/+12
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is three essential bug fixes for various SCSI parts. The only affected users are SCSI multi-path via device handler (basically all the enterprise) and mvsas users. The dh bugs are an async entanglement in boot resulting in a serious WARN_ON trip and a use after free on remove leading to a crash with strict memory accounting. The mvsas bug manifests as a null deref oops but only on abort sequences; however, these can commonly occur with SATA attached devices, hence the fix" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi_dh: don't try to load a device handler during async probing scsi_dh: fix use-after-free when removing scsi device mvsas: Fix NULL pointer dereference in mvs_slot_task_free
2015-11-01Merge tag 'md/4.3-rc7-fixes' of git://neil.brown.name/mdLinus Torvalds2-4/+5
Pull md bug fixes from Neil Brown: "Two more bug fixes for md. One bugfix for a list corruption in raid5 because of incorrect locking. Other for possible data corruption when a recovering device is failed, removed, and re-added. Both tagged for -stable" * tag 'md/4.3-rc7-fixes' of git://neil.brown.name/md: Revert "md: allow a partially recovered device to be hot-added to an array." md/raid5: fix locking in handle_stripe_clean_event()
2015-11-01Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds4-7/+18
Pull drm fixes from Dave Airlie: "Two drm atomic core fixes. And two radeon patches needed to fix a backlight regression on some older hardware" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm: Correct arguments to list_tail_add in create blob ioctl drm: crtc: integer overflow in drm_property_create_blob() drm/radeon: fix dpms when driver backlight control is disabled drm/radeon: move bl encoder assignment into bl init
2015-11-01vfs: conditionally clear close-on-exec flagLinus Torvalds1-1/+2
We clear the close-on-exec flag when opening and closing files, and the bit was almost always already clear before. Avoid dirtying the cacheline if the clearning isn't necessary. That avoids unnecessary cacheline dirtying and bouncing in multi-socket environments. Eric Dumazet has a file descriptor benchmark that goes 4% faster from this on his two-socket machine. It's probably partly superlinear improvement due to getting slightly less spinlock contention on the file_lock spinlock due to less work in the critical section. Tested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-01vfs: Fix pathological performance case for __alloc_fd()Linus Torvalds2-4/+37
Al Viro points out that: > > * [Linux-specific aside] our __alloc_fd() can degrade quite badly > > with some use patterns. The cacheline pingpong in the bitmap is probably > > inevitable, unless we accept considerably heavier memory footprint, > > but we also have a case when alloc_fd() takes O(n) and it's _not_ hard > > to trigger - close(3);open(...); will have the next open() after that > > scanning the entire in-use bitmap. And Eric Dumazet has a somewhat realistic multithreaded microbenchmark that opens and closes a lot of sockets with minimal work per socket. This patch largely fixes it. We keep a 2nd-level bitmap of the open file bitmaps, showing which words are already full. So then we can traverse that second-level bitmap to efficiently skip already allocated file descriptors. On his benchmark, this improves performance by up to an order of magnitude, by avoiding the excessive open file bitmap scanning. Tested-and-acked-by: Eric Dumazet <edumazet@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-01hwmon: (fam15h_power) Add max compute unit accumulated powerHuang Rui1-0/+12
This patch adds a member in fam15h_power_data which specifies the maximum accumulated power in a compute unit. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-11-01hwmon: (fam15h_power) Enable power1_input on AMD CarrizoHuang Rui1-2/+7
This patch enables power1_input attribute for Carrizo platform. Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-11-01hwmon: (fam15h_power) Refactor attributes for dynamically addedHuang Rui1-25/+45
Attributes depend on the CPU model the driver gets loaded on. Therefore, add those attributes dynamically at init time. This is more flexible to control the different attributes on different platforms. Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Huang Rui <ray.huang@amd.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-11-01Merge branch 'for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph fix from Sage Weil: "This sets the stable pages flag on the RBD block device when we have CRCs enabled. (This is necessary since the default assumption for block devices changed in 3.9)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: require stable pages if message data CRCs are enabled
2015-11-01Merge branch 'overlayfs-linus' of ↵Linus Torvalds3-3/+8
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs bug fixes from Miklos Szeredi: "This contains fixes for bugs that appeared in earlier kernels (all are marked for -stable)" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: free lower_mnt array in ovl_put_super ovl: free stack of paths in ovl_fill_super ovl: fix open in stacked overlay ovl: fix dentry reference leak ovl: use O_LARGEFILE in ovl_copy_up()
2015-11-01pinctrl: pinconf: remove needless loopLaurent Meunier1-8/+5
This removes a needless loop which was caught in pinconf.c. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Laurent Meunier <laurent.meunier@st.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIERMasahiro Yamada3-9/+9
CONFIG_PINCTRL_UNIPHIER is more suitable than CONFIG_ARCH_UNIPHIER to guard the drivers/pinctrl/uniphier directory. The current CONFIG_PINCTRL_UNIPHIER_CORE is a bit long (it would break the indentation in drivers/pinctrl/Makefile), so rename it into CONFIG_PINCTRL_UNIPHIER. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01pinctrl: zynq: fix UTF-8 errorsLinus Walleij1-2/+2
Fix up Sören's name in the Zynq driver. I caused this. I fix it. Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01gpio: dt-bindings: document the official use of "ngpios"Linus Walleij1-0/+24
There are a bunch of drivers that utilize the "ngpios" DT property without any vendor prefix. Try to start cleaning up the mess by defining what we mean by this property. Cc: devicetree@vger.kernel.org Cc: Pramod Kumar <pramodku@broadcom.com> Cc: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01gpio: MAINTAINERS: Add an entry for the ATH79 GPIO driverAlban Bedel1-0/+8
Add an entry for the ATH79 GPIO driver with myself as maintainer. Signed-off-by: Alban Bedel <albeu@free.fr> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01gpio / ACPI: Allow shared GPIO event to be read via operation regionMika Westerberg1-1/+20
In Microsoft Surface3 the GPIO detecting lid state is shared between GPIO event and operation region. Below is simplied version of the DSDT from Surface3 including relevant parts: Scope (GPO0) { Name (_AEI, ResourceTemplate () { GpioInt (Edge, ActiveBoth, Shared, PullNone, 0x0000, "\\_SB.GPO0", 0x00, ResourceConsumer, , ) { // Pin list 0x004C } }) OperationRegion (GPOR, GeneralPurposeIo, Zero, One) Field (GPOR, ByteAcc, NoLock, Preserve) { Connection ( GpioIo (Shared, PullNone, 0x0000, 0x0000, IoRestrictionNone, "\\_SB.GPO0", 0x00, ResourceConsumer,,) { // Pin list 0x004C } ), HELD, 1 } Method (_E4C, 0, Serialized) // _Exx: Edge-Triggered GPE { If ((HELD == One)) { ^^LID.LIDB = One } Else { ^^LID.LIDB = Zero Notify (LID, 0x80) // Status Change } Notify (^^PCI0.SPI1.NTRG, One) // Device Check } } When GPIO 0x4c changes we call ASL method _E4C which tries to read HELD field (the same GPIO). This triggers following error on the console: ACPI Error: Method parse/execution failed [\_SB.GPO0._E4C] (Node ffff88013f4b4438), AE_ERROR (20150930/psparse-542) The error happens because ACPI GPIO operation region handler (acpi_gpio_adr_space_handler()) tries to acquire the very same GPIO which returns an error (-EBUSY) because the GPIO is already reserved for the GPIO event. Fix this so that we "borrow" the event GPIO if we find the GPIO belongs to an event. Allow this only for GPIOs that are read. To be able to go through acpi_gpio->events list for operation region access we need to make sure the list is properly initialized whenever GPIO chip is registered. Link: https://bugzilla.kernel.org/show_bug.cgi?id=106571 Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-01gpio: group port-mapped I/O drivers in a menuLinus Walleij1-77/+78
Create a Kconfig submenu for drivers using X86 port-mapped I/O and depend on X86 for this. Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: Andreas Bofjall <andreas@gazonk.org> Cc: Diego Elio Pettenò <flameeyes@flameeyes.eu> Cc: Daniel Krueger <daniel.krueger@systec-electronic.com> Cc: Bruno Randolf <br1@einfach.org> Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds89-477/+894
Pull networking fixes from David Miller: 1) Fix two regressions in ipv6 route lookups, particularly wrt output interface specifications in the lookup key. From David Ahern. 2) Fix checks in ipv6 IPSEC tunnel pre-encap fragmentation, from Herbert Xu. 3) Fix mis-advertisement of 1000BASE-T on bcm63xx_enet, from Simon Arlott. 4) Some smsc phys misbehave with energy detect mode enabled, so add a DT property and disable it on such switches. From Heiko Schocher. 5) Fix TSO corruption on TX in mv643xx_eth, from Philipp Kirchhofer. 6) Fix regression added by removal of openvswitch vport stats, from James Morse. 7) Vendor Kconfig options should be bool, not tristate, from Andreas Schwab. 8) Use non-_BH() net stats bump in tcp_xmit_probe_skb(), otherwise we barf during TCP REPAIR operations. 9) Fix various bugs in openvswitch conntrack support, from Joe Stringer. 10) Fix NETLINK_LIST_MEMBERSHIPS locking, from David Herrmann. 11) Don't have VSOCK do sock_put() in interrupt context, from Jorgen Hansen. 12) Fix skb_realloc_headroom() failures properly in ISDN, from Karsten Keil. 13) Add some device IDs to qmi_wwan, from Bjorn Mork. 14) Fix ovs egress tunnel information when using lwtunnel devices, from Pravin B Shelar. 15) Add missing NETIF_F_FRAGLIST to macvtab feature list, from Jason Wang. 16) Fix incorrect handling of throw routes when the result of the throw cannot find a match, from Xin Long. 17) Protect ipv6 MTU calculations from wrap-around, from Hannes Frederic Sowa. 18) Fix failed autonegotiation on KSZ9031 micrel PHYs, from Nathan Sullivan. 19) Add missing memory barries in descriptor accesses or xgbe driver, from Thomas Lendacky. 20) Fix release conditon test in pppoe_release(), from Guillaume Nault. 21) Fix gianfar bugs wrt filter configuration, from Claudiu Manoil. 22) Fix violations of RX buffer alignment in sh_eth driver, from Sergei Shtylyov. 23) Fixing missing of_node_put() calls in various places around the networking, from Julia Lawall. 24) Fix incorrect leaf now walking in ipv4 routing tree, from Alexander Duyck. 25) RDS doesn't check pskb_pull()/pskb_trim() return values, from Sowmini Varadhan. 26) Fix VLAN configuration in mlx4 driver, from Jack Morgenstein. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (79 commits) ipv6: protect mtu calculation of wrap-around and infinite loop by rounding issues Revert "Merge branch 'ipv6-overflow-arith'" net/mlx4: Copy/set only sizeof struct mlx4_eqe bytes net/mlx4_en: Explicitly set no vlan tags in WQE ctrl segment when no vlan is present vhost: fix performance on LE hosts bpf: sample: define aarch64 specific registers amd-xgbe: Fix race between access of desc and desc index RDS-TCP: Recover correctly from pskb_pull()/pksb_trim() failure in rds_tcp_data_recv forcedeth: fix unilateral interrupt disabling in netpoll path openvswitch: Fix skb leak using IPv6 defrag ipv6: Export nf_ct_frag6_consume_orig() openvswitch: Fix double-free on ip_defrag() errors fib_trie: leaf_walk_rcu should not compute key if key is less than pn->key net: mv643xx_eth: add missing of_node_put ath6kl: add missing of_node_put net: phy: mdio: add missing of_node_put netdev/phy: add missing of_node_put net: netcp: add missing of_node_put net: thunderx: add missing of_node_put ipv6: gre: support SIT encapsulation ...
2015-10-31hwmon: (ina2xx) remove no longer used variable 'kind'Marc Titinger1-4/+2
Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-31x86/vm86: Set thread.vm86 to NULL on fork/cloneAndy Lutomirski1-0/+3
thread.vm86 points to per-task information -- the pointer should not be copied on clone. Fixes: d4ce0f26c790 ("x86/vm86: Move fields from 'struct kernel_vm86_struct' to 'struct vm86'") Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Stas Sergeev <stsp@list.ru> Link: http://lkml.kernel.org/r/71c5d6985d70ec8197c8d72f003823c81b7dcf99.1446270067.git.luto@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-31selftests/x86: Add a fork() to entry_from_vm86 to catch fork bugsAndy Lutomirski1-0/+4
Mere possession of vm86 state is strange. Make sure that nothing gets corrupted if we fork after calling vm86(). Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Stas Sergeev <stsp@list.ru> Link: http://lkml.kernel.org/r/08f83295460a80e41dc5e3e81ec40d6844d316f5.1446270067.git.luto@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-31Merge branch 'for-linus' of ↵Linus Torvalds3-8/+45
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input layer fixes from Dmitry Torokhov: - a change to the ALPS driver where we had limit the quirk for trackstick handling from being active on all Dells to just a few models - a fix for a build dependency issue in the sur40 driver - a small clock handling fixup in the LPC32xx touchscreen driver * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: alps - only the Dell Latitude D420/430/620/630 have separate stick button bits Input: sur40 - add dependency on VIDEO_V4L2 Input: lpc32xx_ts - fix warnings caused by enabling unprepared clock
2015-10-31Merge tag 'pci-v4.3-fixes-2' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fix from Bjorn Helgaas: "Sorry for this last-minute update; it's been in -next for quite a while, but I forgot about it until I started getting ready for the merge window. It's small and fixes a way a user could cause a panic via sysfs, so I think it's worth getting it in v4.3. NUMA: - Prevent out of bounds access in sysfs numa_node override (Sasha Levin)" * tag 'pci-v4.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Prevent out of bounds access in numa_node override
2015-10-31Merge tag 'omap-for-v4.3/fixes-rc7' of ↵Olof Johansson2-7/+24
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Two omap regression fixes: - Fix omap3 MUSB with DMA caused by driver core changes - Fix LCD DMA interrupt number for omap1 that did not get changed for sparse IRQ changes * tag 'omap-for-v4.3/fixes-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: usb: musb: omap2430: Fix regression caused by driver core change ARM: OMAP1: fix incorrect INT_DMA_LCD Signed-off-by: Olof Johansson <olof@lixom.net>
2015-10-31drm: Correct arguments to list_tail_add in create blob ioctlManeet Singh1-1/+1
Arguments passed to list_add_tail were reversed resulting in deletion of old blob property everytime the new one is added. Fixes commit e2f5d2ea479b9b2619965d43db70939589afe43a Author: Daniel Stone <daniels@collabora.com> Date: Fri May 22 13:34:51 2015 +0100 drm/mode: Add user blob-creation ioctl Signed-off-by: Maneet Singh <mmaneetsingh@nvidia.com> [seanpaul tweaked commit subject a little] Signed-off-by: Sean Paul <seanpaul@chromium.org> Cc: stable@kernel.org # v4.2 Reviewed-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Dave Airlie <airlied@gmail.com>
2015-10-31Revert "md: allow a partially recovered device to be hot-added to an array."NeilBrown1-2/+1
This reverts commit 7eb418851f3278de67126ea0c427641ab4792c57. This commit is poorly justified, I can find not discusison in email, and it clearly causes a problem. If a device which is being recovered fails and is subsequently re-added to an array, there could easily have been changes to the array *before* the point where the recovery was up to. So the recovery must start again from the beginning. If a spare is being recovered and fails, then when it is re-added we really should do a bitmap-based recovery up to the recovery-offset, and then a full recovery from there. Before this reversion, we only did the "full recovery from there" which is not corect. After this reversion with will do a full recovery from the start, which is safer but not ideal. It will be left to a future patch to arrange the two different styles of recovery. Reported-and-tested-by: Nate Dailey <nate.dailey@stratus.com> Signed-off-by: NeilBrown <neilb@suse.com> Cc: stable@vger.kernel.org (3.14+) Fixes: 7eb418851f32 ("md: allow a partially recovered device to be hot-added to an array.")
2015-10-31drm: crtc: integer overflow in drm_property_create_blob()Dan Carpenter1-1/+1
The size here comes from the user via the ioctl, it is a number between 1-u32max so the addition here could overflow on 32 bit systems. Fixes: f453ba046074 ('DRM: add mode setting support') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Daniel Stone <daniels@collabora.com> Cc: stable@kernel.org # v4.2 Signed-off-by: Dave Airlie <airlied@gmail.com>
2015-10-31Merge tag 'arm64-fixes' of ↵Linus Torvalds4-23/+35
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "Apologies for this being so late, but we've uncovered a few nasty issues on arm64 which didn't settle down until yesterday and the fixes all look suitable for 4.3. Of the four patches, three of them are Cc'd to stable, with the remaining patch fixing an issue that only took effect during the merge window. Summary: - Fix corruption in SWP emulation when STXR fails due to contention - Fix MMU re-initialisation when resuming from a low-power state - Fix stack unwinding code to match what ftrace expects - Fix relocation code in the EFI stub when DRAM base is not 2MB aligned" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64/efi: do not assume DRAM base is aligned to 2 MB Revert "ARM64: unwind: Fix PC calculation" arm64: kernel: fix tcr_el1.t0sz restore on systems with extended idmap arm64: compat: fix stxr failure case in SWP emulation
2015-10-31Merge tag 'please-pull-syscalls' of ↵Linus Torvalds3-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull ia64 kcmp syscall from Tony Luck: "Missed adding the kcmp() syscall a long time ago. Now it seems that it is essential to build systemd" * tag 'please-pull-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: [IA64] Wire up kcmp syscall
2015-10-31md/raid5: fix locking in handle_stripe_clean_event()Roman Gushchin1-2/+4
After commit 566c09c53455 ("raid5: relieve lock contention in get_active_stripe()") __find_stripe() is called under conf->hash_locks + hash. But handle_stripe_clean_event() calls remove_hash() under conf->device_lock. Under some cirscumstances the hash chain can be circuited, and we get an infinite loop with disabled interrupts and locked hash lock in __find_stripe(). This leads to hard lockup on multiple CPUs and following system crash. I was able to reproduce this behavior on raid6 over 6 ssd disks. The devices_handle_discard_safely option should be set to enable trim support. The following script was used: for i in `seq 1 32`; do dd if=/dev/zero of=large$i bs=10M count=100 & done neilb: original was against a 3.x kernel. I forward-ported to 4.3-rc. This verison is suitable for any kernel since Commit: 59fc630b8b5f ("RAID5: batch adjacent full stripe write") (v4.1+). I'll post a version for earlier kernels to stable. Signed-off-by: Roman Gushchin <klamm@yandex-team.ru> Fixes: 566c09c53455 ("raid5: relieve lock contention in get_active_stripe()") Signed-off-by: NeilBrown <neilb@suse.com> Cc: Shaohua Li <shli@kernel.org> Cc: <stable@vger.kernel.org> # 3.13 - 4.2
2015-10-30rbd: require stable pages if message data CRCs are enabledRonny Hegewald1-0/+3
rbd requires stable pages, as it performs a crc of the page data before they are send to the OSDs. But since kernel 3.9 (patch 1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0 "mm: only enforce stable page writes if the backing device requires it") it is not assumed anymore that block devices require stable pages. This patch sets the necessary flag to get stable pages back for rbd. In a ceph installation that provides multiple ext4 formatted rbd devices "bad crc" messages appeared regularly (ca 1 message every 1-2 minutes on every OSD that provided the data for the rbd) in the OSD-logs before this patch. After this patch this messages are pretty much gone (only ca 1-2 / month / OSD). Cc: stable@vger.kernel.org # 3.9+, needs backporting Signed-off-by: Ronny Hegewald <Ronny.Hegewald@online.de> [idryomov@gmail.com: require stable pages only in crc case, changelog] Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2015-10-30hwmon: (nct6775) Introduce separate temperature labels for NCT6792 and NCT6793Guenter Roeck1-1/+82
NCT6792 and NCT6793 are mostly register compatible to NCT6791, but temperature sources are different and difficult to manage with a single temperature label array. Introduce separate temperature label arrays for those chips to reflect the differences. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-30hwmon: (nct6775) NCT6791D and NCT6792D have an additional temperature sourceGuenter Roeck1-5/+13
Both NCT6791D and NCT6792D permit selection of a 'virtual' temperature register as temperature source. The virtual temperature registers are registers 0xea to 0xef in bank 0 and can be written by software. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-30pinctrl: zynq: Initialize earlyMike Looijmans1-1/+11
Supplying pinmux configuration for e.g. gpio pins leads to deferred probes because the pinctrl device is probed much later than gpio. Move the init call to a much earlier stage so it probes before the devices that may need it. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Tested-by: Sören Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-30gpio: Add ACCES 104-IDIO-16 driver maintainer entryWilliam Breathitt Gray1-0/+6
Add William Breathitt Gray as the maintainer of the ACCES 104-IDIO-16 GPIO driver. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-30Document that IRQ_NONE should be returned when IRQ not actually handledDavid Woodhouse1-1/+1
Our IRQ storm detection works when an interrupt handler returns IRQ_NONE for thousands of consecutive interrupts in a second. It doesn't hurt to occasionally return IRQ_NONE when the interrupt is actually genuine. Drivers should only be returning IRQ_HANDLED if they have actually *done* something to stop an interrupt from happening — it doesn't just mean "this really *was* my device". Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: davem@davemloft.net Link: http://lkml.kernel.org/r/1446016471.3405.201.camel@infradead.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-30Merge tag 'perf-core-for-mingo' of ↵Ingo Molnar17-16/+227
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: New features: - Allow passing C language eBPF scriptlets via --event in all tools, so that it gets built using clang and then pass it to the kernel via sys_bpf(). (Wang Nan) - Wire up the loaded ebpf object file with associated kprobes, so that it can determine if the kprobes will be filtered or not. (Wang Nan) User visible changes: - Add cmd string table to decode sys_bpf first arg in 'trace'. (Arnaldo Carvalho de Melo) - Enable printing of branch stack in 'perf script'. (Stephane Eranian) - Pass the right file with debug info to libunwind. (Rabin Vincent) Build Fixes: - Make sure fixdep is built before libbpf, fixing a race. (Jiri Olsa) - Fix libiberty feature detection. (Rabin Vincent) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-30Merge branch 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie3-5/+16
into drm-fixes regression fix for backlight on old laptops. * 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: fix dpms when driver backlight control is disabled drm/radeon: move bl encoder assignment into bl init
2015-10-29perf unwind: Pass symbol source to libunwindRabin Vincent1-1/+4
Even if --symfs is used to point to the debug binaries, we send in the non-debug filenames to libunwind, which leads to libunwind not finding the debug frame. Fix this by preferring the file in --symfs, if it is available. Signed-off-by: Rabin Vincent <rabin.vincent@axis.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabinv@axis.com> Link: http://lkml.kernel.org/r/1446104978-26429-1-git-send-email-rabin.vincent@axis.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29tools build: Fix libiberty feature detectionRabin Vincent1-2/+2
Any CFLAGS or LDFLAGS set by the user need to be passed to the feature build command. This many include for example -I or -L to point to libraries and include files in custom paths. In most of the test-*.bin rules in build/feature/Makefile, we use the BUILD macro which always sends in CFLAGS and LDFLAGS. The libiberty build line however doesn't use the BUILD macro and thus needs to send in CFLAGS and LDFLAGS explicitly. Without this, when using custom CFLAGS/LDFLAGS, libiberty fails to be detected and the perf link fails with something like: LINK perf libbfd.a(bfd.o): In function `bfd_errmsg': bfd.c:(.text+0x168): undefined reference to `xstrerror' bbfd.a(opncls.o): In function `_bfd_new_bfd': opncls.c:(.text+0xe8): undefined reference to `objalloc_create' ... Signed-off-by: Rabin Vincent <rabin.vincent@axis.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rabin Vincent <rabinv@axis.com> Link: http://lkml.kernel.org/r/1446104978-26429-2-git-send-email-rabin.vincent@axis.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29perf tools: Compile scriptlets to BPF objects when passing '.c' to --eventWang Nan7-9/+83
This patch provides infrastructure for passing source files to --event directly using: # perf record --event bpf-file.c command This patch does following works: 1) Allow passing '.c' file to '--event'. parse_events_load_bpf() is expanded to allow caller tell it whether the passed file is source file or object. 2) llvm__compile_bpf() is called to compile the '.c' file, the result is saved into memory. Use bpf_object__open_buffer() to load the in-memory object. Introduces a bpf-script-example.c so we can manually test it: # perf record --clang-opt "-DLINUX_VERSION_CODE=0x40200" --event ./bpf-script-example.c sleep 1 Note that '--clang-opt' must put before '--event'. Futher patches will merge it into a testcase so can be tested automatically. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1444826502-49291-10-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29perf record: Add clang options for compiling BPF scriptsWang Nan2-0/+13
Although previous patch allows setting BPF compiler related options in perfconfig, on some ad-hoc situation it still requires passing options through cmdline. This patch introduces 2 options to 'perf record' for this propose: --clang-path and --clang-opt. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1444826502-49291-9-git-send-email-wangnan0@huawei.com [ Add the new options to the 'record' man page ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29perf bpf: Attach eBPF filter to perf eventWang Nan3-0/+24
This is the final patch which makes basic BPF filter work. After applying this patch, users are allowed to use BPF filter like: # perf record --event ./hello_world.o ls A bpf_fd field is appended to 'struct evsel', and setup during the callback function add_bpf_event() for each 'probe_trace_event'. PERF_EVENT_IOC_SET_BPF ioctl is used to attach eBPF program to a newly created perf event. The file descriptor of the eBPF program is passed to perf record using previous patches, and stored into evsel->bpf_fd. It is possible that different perf event are created for one kprobe events for different CPUs. In this case, when trying to call the ioctl, EEXIST will be return. This patch doesn't treat it as an error. Committer note: The bpf proggie used so far: __attribute__((section("fork=_do_fork"), used)) int fork(void *ctx) { return 0; } char _license[] __attribute__((section("license"), used)) = "GPL"; int _version __attribute__((section("version"), used)) = 0x40300; failed to produce any samples, even with forks happening and it being running in system wide mode. That is because now the filter is being associated, and the code above always returns zero, meaning that all forks will be probed but filtered away ;-/ Change it to 'return 1;' instead and after that: # trace --no-syscalls --event /tmp/foo.o 0.000 perf_bpf_probe:fork:(ffffffff8109be30)) 2.333 perf_bpf_probe:fork:(ffffffff8109be30)) 3.725 perf_bpf_probe:fork:(ffffffff8109be30)) 4.550 perf_bpf_probe:fork:(ffffffff8109be30)) ^C# And it works with all tools, including 'perf trace'. Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kaixu Xia <xiakaixu@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1444826502-49291-8-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29perf tools: Make sure fixdep is built before libbpfJiri Olsa1-1/+1
While doing 'make -C tools/perf build-test': LD fixdep-in.o LINK fixdep /bin/sh: /home/acme/git/linux/tools/build/fixdep: Permission denied make[6]: *** [bpf.o] Error 1 make[5]: *** [libbpf-in.o] Error 2 make[4]: *** [/home/acme/git/linux/tools/lib/bpf/libbpf.a] Error 2 make[4]: *** Waiting for unfinished jobs.... The fixdep tool needs to be built as the first binary. Libraries are built in paralel, so each of them needs to depend on fixdep target. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20151028204450.GA25553@krava.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29perf script: Enable printing of branch stackStephane Eranian2-3/+93
This patch improves perf script by enabling printing of the branch stack via the 'brstack' and 'brstacksym' arguments to the field selection option -F. The option is off by default and operates only if the perf.data file has branch stack content. The branches are printed in to/from pairs. The most recent branch is printed first. The number of branch entries vary based on the underlying hardware and filtering used. The brstack prints FROM/TO addresses in raw hexadecimal format. The brstacksym prints FROM/TO addresses in symbolic form wherever possible. $ perf script -F ip,brstack 5d3000 0x401aa0/0x5d2000/M/-/-/-/0 ... $ perf script -F ip,brstacksym 4011e0 noploop+0x0/noploop+0x0/P/-/-/0 The notation F/T/M/X/A/C describes the attributes of the branch. F=from, T=to, M/P=misprediction/prediction, X=TSX, A=TSX abort, C=cycles (SKL) Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yuanfang Chen <cyfmxc@gmail.com> Link: http://lkml.kernel.org/r/1441039273-16260-5-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-10-29arm64/efi: do not assume DRAM base is aligned to 2 MBArd Biesheuvel1-2/+12
The current arm64 Image relocation code in the UEFI stub assumes that the dram_base argument it receives is always a multiple of 2 MB. In reality, it is simply the lowest start address of all RAM entries in the UEFI memory map, which means it could be any multiple of 4 KB. Since the arm64 kernel Image needs to reside TEXT_OFFSET bytes beyond a 2 MB aligned base, or it will fail to boot, make sure we round dram_base to 2 MB before using it to calculate the relocation address. Fixes: e38457c361b30c5a ("arm64: efi: prefer AllocatePages() over efi_low_alloc() for vmlinux") Reported-by: Timur Tabi <timur@codeaurora.org> Tested-by: Timur Tabi <timur@codeaurora.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-10-29Merge branches 'fixes' and 'misc' into for-nextRussell King28-162/+143
2015-10-29ARM: 8449/1: fix bug in vdsomunge swab32 macroH. Nikolaus Schaller1-1/+1
Commit 8a603f91cc48 ("ARM: 8445/1: fix vdsomunge not to depend on glibc specific byteswap.h") unfortunately introduced a bug created but not found during discussion and patch simplification. Reported-by: Efraim Yawitz <efraim.yawitz@gmail.com> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Fixes: 8a603f91cc48 ("ARM: 8445/1: fix vdsomunge not to depend on glibc specific byteswap.h") Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-10-29drm/radeon: fix dpms when driver backlight control is disabledAlex Deucher1-4/+14
If driver backlight control is disabled, either by driver parameter or default per-asic setting, revert to the old behavior. Fixes a regression in commit: 4281f46ef839050d2ef60348f661eb463c21cc2e Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-10-29drm/radeon: move bl encoder assignment into bl initAlex Deucher3-1/+2
So that the bl encoder will be null if the GPU does not control the backlight. Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
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