Andrea Arcangeli [Wed, 2 Nov 2011 20:36:59 +0000 (13:36 -0700)]
mm: thp: tail page refcounting fix
Michel while working on the working set estimation code, noticed that
calling get_page_unless_zero() on a random pfn_to_page(random_pfn)
wasn't safe, if the pfn ended up being a tail page of a transparent
hugepage under splitting by __split_huge_page_refcount().
He then found the problem could also theoretically materialize with
page_cache_get_speculative() during the speculative radix tree lookups
that uses get_page_unless_zero() in SMP if the radix tree page is freed
and reallocated and get_user_pages is called on it before
page_cache_get_speculative has a chance to call get_page_unless_zero().
So the best way to fix the problem is to keep page_tail->_count zero at
all times. This will guarantee that get_page_unless_zero() can never
succeed on any tail page. page_tail->_mapcount is guaranteed zero and
is unused for all tail pages of a compound page, so we can simply
account the tail page references there and transfer them to
tail_page->_count in __split_huge_page_refcount() (in addition to the
head_page->_mapcount).
While debugging this s/_count/_mapcount/ change I also noticed get_page is
called by direct-io.c on pages returned by get_user_pages. That wasn't
entirely safe because the two atomic_inc in get_page weren't atomic. As
opposed to other get_user_page users like secondary-MMU page fault to
establish the shadow pagetables would never call any superflous get_page
after get_user_page returns. It's safer to make get_page universally safe
for tail pages and to use get_page_foll() within follow_page (inside
get_user_pages()). get_page_foll() is safe to do the refcounting for tail
pages without taking any locks because it is run within PT lock protected
critical sections (PT lock for pte and page_table_lock for
pmd_trans_huge).
The standard get_page() as invoked by direct-io instead will now take
the compound_lock but still only for tail pages. The direct-io paths
are usually I/O bound and the compound_lock is per THP so very
finegrined, so there's no risk of scalability issues with it. A simple
direct-io benchmarks with all lockdep prove locking and spinlock
debugging infrastructure enabled shows identical performance and no
overhead. So it's worth it. Ideally direct-io should stop calling
get_page() on pages returned by get_user_pages(). The spinlock in
get_page() is already optimized away for no-THP builds but doing
get_page() on tail pages returned by GUP is generally a rare operation
and usually only run in I/O paths.
This new refcounting on page_tail->_mapcount in addition to avoiding new
RCU critical sections will also allow the working set estimation code to
work without any further complexity associated to the tail page
refcounting with THP.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: <stable@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 2 Nov 2011 04:08:03 +0000 (21:08 -0700)]
Merge branch 'next/soc' of git://git.linaro.org/people/arnd/arm-soc
* 'next/soc' of git://git.linaro.org/people/arnd/arm-soc: (21 commits)
MAINTAINERS: add ARM/FREESCALE IMX6 entry
arm/imx: merge i.MX3 and i.MX6
arm/imx6q: add suspend/resume support
arm/imx6q: add device tree machine support
arm/imx6q: add smp and cpu hotplug support
arm/imx6q: add core drivers clock, gpc, mmdc and src
arm/imx: add gic_handle_irq function
arm/imx6q: add core definitions and low-level debug uart
arm/imx6q: add device tree source
ARM: highbank: add suspend support
ARM: highbank: Add cpu hotplug support
ARM: highbank: add SMP support
MAINTAINERS: add Calxeda Highbank ARM platform
ARM: add Highbank core platform support
ARM: highbank: add devicetree source
ARM: l2x0: add empty l2x0_of_init
picoxcell: add a definition of VMALLOC_END
picoxcell: remove custom ioremap implementation
picoxcell: add the DTS for the PC7302 board
picoxcell: add the DTS for pc3x2 and pc3x3 devices
...
Fix up trivial conflicts in arch/arm/Kconfig, and some more header file
conflicts in arch/arm/mach-omap2/board-generic.c (as per an ealier merge
by Arnd).
Linus Torvalds [Wed, 2 Nov 2011 04:02:35 +0000 (21:02 -0700)]
Merge branch 'next/dt' of git://git.linaro.org/people/arnd/arm-soc
* 'next/dt' of git://git.linaro.org/people/arnd/arm-soc:
ARM: gic: use module.h instead of export.h
ARM: gic: fix irq_alloc_descs handling for sparse irq
ARM: gic: add OF based initialization
ARM: gic: add irq_domain support
irq: support domains with non-zero hwirq base
of/irq: introduce of_irq_init
ARM: at91: add at91sam9g20 and Calao USB A9G20 DT support
ARM: at91: dt: at91sam9g45 family and board device tree files
arm/mx5: add device tree support for imx51 babbage
arm/mx5: add device tree support for imx53 boards
ARM: msm: Add devicetree support for msm8660-surf
msm_serial: Add devicetree support
msm_serial: Use relative resources for iomem
Fix up conflicts in arch/arm/mach-at91/{at91sam9260.c,at91sam9g45.c}
Linus Torvalds [Wed, 2 Nov 2011 03:58:25 +0000 (20:58 -0700)]
Merge branch 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc: (31 commits)
ARM: OMAP: Warn if omap_ioremap is called before SoC detection
ARM: OMAP: Move set_globals initialization to happen in init_early
ARM: OMAP: Map SRAM later on with ioremap_exec()
ARM: OMAP: Remove calls to SRAM allocations for framebuffer
ARM: OMAP: Avoid cpu_is_omapxxxx usage until map_io is done
ARM: OMAP1: Use generic map_io, init_early and init_irq
arm/dts: OMAP3+: Add mpu, dsp and iva nodes
arm/dts: OMAP4: Add a main ocp entry bound to l3-noc driver
ARM: OMAP2+: l3-noc: Add support for device-tree
ARM: OMAP2+: board-generic: Add i2c static init
ARM: OMAP2+: board-generic: Add DT support to generic board
arm/dts: Add support for OMAP3 Beagle board
arm/dts: Add initial device tree support for OMAP3 SoC
arm/dts: Add support for OMAP4 SDP board
arm/dts: Add support for OMAP4 PandaBoard
arm/dts: Add initial device tree support for OMAP4 SoC
ARM: OMAP: omap_device: Add a method to build an omap_device from a DT node
ARM: OMAP: omap_device: Add omap_device_[alloc|delete] for DT integration
of: Add helpers to get one string in multiple strings property
ARM: OMAP2+: devices: Remove all omap_device_pm_latency structures
...
Fix up trivial header file conflicts in arch/arm/mach-omap2/board-generic.c
Linus Torvalds [Wed, 2 Nov 2011 03:34:22 +0000 (20:34 -0700)]
Merge branch 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-soc:
arm/imx: use Kconfig choice for low-level debug UART selection
ARM: realview: use Kconfig choice for debug UART selection
ARM: plat-samsung: use Kconfig choice for debug UART selection
ARM: versatile: convert logical CPU numbers to physical numbers
ARM: ux500: convert logical CPU numbers to physical numbers
ARM: shmobile: convert logical CPU numbers to physical numbers
ARM: msm: convert logical CPU numbers to physical numbers
ARM: exynos4: convert logical CPU numbers to physical numbers
Fix up trivial conflict (config DEBUG_S3C_UART move/split vs addition of
ARM_KPROBES_TEST option) in arch/arm/Kconfig.debug
Linus Torvalds [Wed, 2 Nov 2011 03:31:25 +0000 (20:31 -0700)]
Merge branch 'next/devel' of git://git.linaro.org/people/arnd/arm-soc
* 'next/devel' of git://git.linaro.org/people/arnd/arm-soc: (50 commits)
ARM: tegra: update defconfig
arm/tegra: Harmony: Configure PMC for low-level interrupts
arm/tegra: device tree support for ventana board
arm/tegra: add support for ventana pinmuxing
arm/tegra: prepare Seaboard pinmux code for derived boards
arm/tegra: pinmux: ioremap registers
gpio/tegra: Convert to a platform device
arm/tegra: Convert pinmux driver to a platform device
arm/dt: Tegra: Add pinmux node to tegra20.dtsi
arm/tegra: Prep boards for gpio/pinmux conversion to pdevs
ARM: mx5: fix clock usage for suspend
ARM i.MX entry-macro.S: remove now unused code
ARM i.MX boards: use CONFIG_MULTI_IRQ_HANDLER
ARM i.MX tzic: add handle_irq function
ARM i.MX avic: add handle_irq function
ARM: mx25: Add the missing IIM base definition
ARM i.MX avic: convert to use generic irq chip
mx31moboard: Add poweroff support
ARM: mach-qong: Add watchdog support
ARM: davinci: AM18x: Add wl1271/wlan support
...
Fix up conflicts in:
arch/arm/mach-at91/at91sam9g45.c
arch/arm/mach-mx5/devices-imx53.h
arch/arm/plat-mxc/include/mach/memory.h
Linus Torvalds [Wed, 2 Nov 2011 03:25:36 +0000 (20:25 -0700)]
Merge branch 'next/board' of git://git.linaro.org/people/arnd/arm-soc
* 'next/board' of git://git.linaro.org/people/arnd/arm-soc: (34 commits)
ep93xx: add support Vision EP9307 SoM
ARM: mxs: Add initial support for DENX MX28
ARM: EXYNOS4: Add support SMDK4412 Board
ARM: EXYNOS4: Add MCT support for EXYNOS4412
ARM: EXYNOS4: Add functions for gic interrupt handling
ARM: EXYNOS4: Add support clock for EXYNOS4412
ARM: EXYNOS4: Add support new EXYNOS4412 SoC
ARM: EXYNOS4: Add support MCT PPI for EXYNOS4212
ARM: EXYNOS4: Add support PPI in external GIC
ARM: EXYNOS4: convert boot_params to atag_offset
ixp4xx: support omicron ixp425 based boards
ARM: EXYNOS4: Add support SMDK4212 Board
ARM: EXYNOS4: Add support PM for EXYNOS4212
ARM: EXYNOS4: Add support clock for EXYNOS4212
ARM: EXYNOS4: Add support new EXYNOS4212 SoC
at91: USB-A9G20 C01 & C11 board support
at91: merge board USB-A9260 and USB-A9263 together
at91: add support for RSIs EWS board
ARM: SAMSUNG: Fix mask value for S5P64X0 CPU IDs
ARM: SAMSUNG: Fix mask for S3C64xx CPU IDs
...
Linus Torvalds [Wed, 2 Nov 2011 03:24:30 +0000 (20:24 -0700)]
Merge branch 'next/deletion' of git://git.linaro.org/people/arnd/arm-soc
* 'next/deletion' of git://git.linaro.org/people/arnd/arm-soc:
ARM: mach-nuc93x: delete
Fix up trivial delete/edit conflicts in
arch/arm/mach-nuc93x/{Makefile.boot,mach-nuc932evb.c,time.c}
Linus Torvalds [Wed, 2 Nov 2011 03:22:01 +0000 (20:22 -0700)]
Merge branch 'next/pm' of git://git.linaro.org/people/arnd/arm-soc
* 'next/pm' of git://git.linaro.org/people/arnd/arm-soc: (66 commits)
ARM: CSR: PM: use outer_resume to resume L2 cache
ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII
ARM: OMAP: voltage: voltage layer present, even when CONFIG_PM=n
ARM: CSR: PM: add sleep entry for SiRFprimaII
ARM: CSR: PM: save/restore irq status in suspend cycle
ARM: CSR: PM: save/restore timer status in suspend cycle
OMAP4: PM: TWL6030: add cmd register
OMAP4: PM: TWL6030: fix ON/RET/OFF voltages
OMAP4: PM: TWL6030: address 0V conversions
OMAP4: PM: TWL6030: fix uv to voltage for >0x39
OMAP4: PM: TWL6030: fix voltage conversion formula
omap: voltage: add a stub header file for external/regulator use
OMAP2+: VC: more registers are per-channel starting with OMAP5
OMAP3+: voltage: update nominal voltage in voltdm_scale() not VC post-scale
OMAP3+: voltage: rename omap_voltage_get_nom_volt -> voltdm_get_voltage
OMAP3+: voltdm: final removal of omap_vdd_info
OMAP3+: voltage: move/rename curr_volt from vdd_info into struct voltagedomain
OMAP3+: voltage: rename scale and reset functions using voltdm_ prefix
OMAP3+: VP: combine setting init voltage into common function
OMAP3+: VP: remove unused omap_vp_get_curr_volt()
...
Fix up trivial conflict in arch/arm/mach-prima2/l2x0.c (code removal vs
edit)
Linus Torvalds [Wed, 2 Nov 2011 03:18:05 +0000 (20:18 -0700)]
Merge branch 'next/timer' of git://git.linaro.org/people/arnd/arm-soc
* 'next/timer' of git://git.linaro.org/people/arnd/arm-soc:
clocksource: fixup ux500 build problems
ARM: omap: use __devexit_p in dmtimer driver
ARM: ux500: Reprogram timers upon resume
ARM: plat-nomadik: timer: Export reset functions
ARM: plat-nomadik: timer: Add support for periodic timers
ARM: ux500: Move timer code to separate file
ARM: ux500: add support for clocksource DBX500 PRCMU
clocksource: add DBX500 PRCMU Timer support
ARM: plat-nomadik: MTU sched_clock as an option
ARM: OMAP: dmtimer: add error handling to export APIs
ARM: OMAP: dmtimer: low-power mode support
ARM: OMAP: dmtimer: skip reserved timers
ARM: OMAP: dmtimer: pm_runtime support
ARM: OMAP: dmtimer: switch-over to platform device driver
ARM: OMAP: dmtimer: platform driver
ARM: OMAP2+: dmtimer: convert to platform devices
ARM: OMAP1: dmtimer: conversion to platform devices
ARM: OMAP2+: dmtimer: add device names to flck nodes
ARM: OMAP: Add support for dmtimer v2 ip
Linus Torvalds [Wed, 2 Nov 2011 03:16:43 +0000 (20:16 -0700)]
Merge branch 'next/driver' of git://git.linaro.org/people/arnd/arm-soc
* 'next/driver' of git://git.linaro.org/people/arnd/arm-soc:
hw_random: add driver for atmel true hardware random number generator
ARM: at91: at91sam9g45: add trng clock and platform device
MX53 Enable the AHCI SATA on MX53 SMD board
MX53 Enable the AHCI SATA on MX53 LOCO board
MX53 Enable the AHCI SATA on MX53 ARD board
AHCI Add the AHCI SATA feature on the MX53 platforms
Fix pata imx resource
ARM: imx: Define functions for registering PATA
ARM: imx: Add PATA clock support
ARM: imx: Add PATA resources for other i.MX processors
imx: efika: Enable pata.
imx51: add pata clock
imx51: add pata device
Fix up trivial conflict (new selects next to each other from separate
branches for EFIKA_COMMON) in arch/arm/mach-mx5/Kconfig
Linus Torvalds [Wed, 2 Nov 2011 03:11:00 +0000 (20:11 -0700)]
Merge branch 'next/cleanup' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cleanup' of git://git.linaro.org/people/arnd/arm-soc: (125 commits)
ARM: mach-mxs: fix machines' initializers order
mmc: mxcmmc: explicitly includes mach/hardware.h
arm/imx: explicitly includes mach/hardware.h in pm-imx27.c
arm/imx: remove mx27_setup_weimcs() from mx27.h
arm/imx: explicitly includes mach/hardware.h in mach-kzm_arm11_01.c
arm/imx: remove mx31_setup_weimcs() from mx31.h
ARM: tegra: devices.c should include devices.h
ARM: tegra: cpu-tegra: unexport two functions
ARM: tegra: cpu-tegra: sparse type fix
ARM: tegra: dma: staticify some tables and functions
ARM: tegra: tegra2_clocks: don't export some tables
ARM: tegra: tegra_powergate_is_powered should be static
ARM: tegra: tegra_rtc_read_ms should be static
ARM: tegra: tegra_init_cache should be static
ARM: tegra: pcie: 0 -> NULL changes
ARM: tegra: pcie: include board.h
ARM: tegra: pcie: don't cast __iomem pointers
ARM: tegra: tegra2_clocks: 0 -> NULL changes
ARM: tegra: tegra2_clocks: don't cast __iomem pointers
ARM: tegra: timer: don't cast __iomem pointers
...
Fix up trivial conflicts in
arch/arm/mach-omap2/Makefile,
arch/arm/mach-u300/{Makefile.boot,core.c}
arch/arm/plat-{mxc,omap}/devices.c
Linus Torvalds [Wed, 2 Nov 2011 02:55:06 +0000 (19:55 -0700)]
Merge branch 'next/fixes' of git://git.linaro.org/people/arnd/arm-soc
* 'next/fixes' of git://git.linaro.org/people/arnd/arm-soc: (28 commits)
ARM: pxa/cm-x300: properly set bt_reset pin
ARM: mmp: rename SHEEVAD to GPLUGD
ARM: imx: Fix typo 'MACH_MX31_3DS_MXC_NAND_USE_BBT'
ARM: i.MX28: shift frac value in _CLK_SET_RATE
plat-mxc: iomux-v3.h: implicitly enable pull-up/down when that's desired
ARM: mx5: fix clock usage for suspend
ARM: pxa: use correct __iomem annotations
ARM: pxa: sharpsl pm needs SPI
ARM: pxa: centro and treo680 need palm27x
ARM: pxa: make pxafb_smart_*() empty when not enabled
ARM: pxa: select POWER_SUPPLY on raumfeld
ARM: pxa: pxa95x is incompatible with earlier pxa
ARM: pxa: CPU_FREQ_TABLE is needed for CPU_FREQ
ARM: pxa: pxa95x/saarb depends on pxa3xx code
ARM: pxa: allow selecting just one of TREO680/CENTRO
ARM: pxa: export symbols from pxa3xx-ulpi
ARM: pxa: make zylonite_pxa*_init declaration match code
ARM: pxa/z2: fix building error of pxa27x_cpu_suspend() no longer available
ARM: at91: add defconfig for at91sam9g45 family
ARM: at91: remove dependency for Atmel PWM driver selector in Kconfig
...
Arnd Bergmann [Wed, 2 Nov 2011 01:46:55 +0000 (02:46 +0100)]
Merge branch 'imx/imx6q' into next/soc
Conflicts:
Documentation/devicetree/bindings/arm/fsl.txt
arch/arm/Kconfig
arch/arm/Kconfig.debug
arch/arm/plat-mxc/include/mach/common.h
Arnd Bergmann [Wed, 2 Nov 2011 01:46:17 +0000 (02:46 +0100)]
Merge branch 'picoxcell/soc' into next/soc
Arnd Bergmann [Wed, 2 Nov 2011 01:46:10 +0000 (02:46 +0100)]
Merge branch 'highbank/soc' into next/soc
Conflicts:
arch/arm/mach-mxs/include/mach/gpio.h
arch/arm/mach-omap2/board-generic.c
arch/arm/plat-mxc/include/mach/gpio.h
Linus Torvalds [Tue, 1 Nov 2011 22:07:19 +0000 (15:07 -0700)]
Merge branch 'for-linus/i2c-3.2' of git://git.fluff.org/bjdooks/linux
* 'for-linus/i2c-3.2' of git://git.fluff.org/bjdooks/linux: (47 commits)
i2c-s3c2410: Add device tree support
i2c-s3c2410: Keep a copy of platform data and use it
i2c-nomadik: cosmetic coding style corrections
i2c-au1550: dev_pm_ops conversion
i2c-au1550: increase timeout waiting for master done
i2c-au1550: remove unused ack_timeout
i2c-au1550: remove usage of volatile keyword
i2c-tegra: __iomem annotation fix
i2c-eg20t: Add initialize processing in case i2c-error occurs
i2c-eg20t: Fix flag setting issue
i2c-eg20t: add stop sequence in case wait-event timeout occurs
i2c-eg20t: Separate error processing
i2c-eg20t: Fix 10bit access issue
i2c-eg20t: Modify returned value s32 to long
i2c-eg20t: Fix bus-idle waiting issue
i2c-designware: Fix PCI core warning on suspend/resume
i2c-designware: Add runtime power management support
i2c-designware: Add support for Designware core behind PCI devices.
i2c-designware: Push all register reads/writes into the core code.
i2c-designware: Support multiple cores using same ISR
...
Linus Torvalds [Tue, 1 Nov 2011 22:06:20 +0000 (15:06 -0700)]
Merge branch 'for-linus' of git://opensource.wolfsonmicro.com/regulator
* 'for-linus' of git://opensource.wolfsonmicro.com/regulator: (22 commits)
regulator: Constify constraints name
regulator: Fix possible nullpointer dereference in regulator_enable()
regulator: gpio-regulator add dependency on GENERIC_GPIO
regulator: Add module.h include to gpio-regulator
regulator: Add driver for gpio-controlled regulators
regulator: remove duplicate REG_CTRL2 defines in tps65023
regulator: Clarify documentation for regulator-regulator supplies
regulator: Fix some bitrot in the machine driver documentation
regulator: tps65023: Added support for the similiar TPS65020 chip
regulator: tps65023: Setting correct core regulator for tps65021
regulator: tps65023: Set missing bit for update core-voltage
regulator: tps65023: Fixes i2c configuration issues
regulator: Add debugfs file showing the supply map table
regulator: tps6586x: add SMx slew rate setting
regulator: tps65023: Fixes i2c configuration issues
regulator: tps6507x: Remove num_voltages array
regulator: max8952: removed unused mutex.
regulator: fix regulator/consumer.h kernel-doc warning
regulator: Ensure enough enable time for max8649
regulator: 88pm8607: Fix off-by-one value range checking in the case of no id is matched
...
Linus Torvalds [Tue, 1 Nov 2011 22:02:38 +0000 (15:02 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: ohci: fix isochronous DMA synchronization
firewire: ohci: work around selfID junk due to wrong gap count
firewire: net: Use posted writes
firewire: use clamp and min3 macros
firewire: ohci: optimize TSB41BA3D detection
firewire: ohci: TSB41BA3D support tweaks
firewire: ohci: Add support for TSB41BA3D phy
firewire: ohci: Move code from the bus reset tasklet into a workqueue
firewire: sbp2: fold two functions into one
firewire: sbp2: move some code to more sensible places
firewire: sbp2: remove obsolete reference counting
Linus Torvalds [Tue, 1 Nov 2011 17:52:29 +0000 (10:52 -0700)]
Merge branch 'pstore' of git://git./linux/kernel/git/aegl/linux
* 'pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
pstore: make pstore write function return normal success/fail value
pstore: change mutex locking to spin_locks
pstore: defer inserting OOPS entries into pstore
Linus Torvalds [Tue, 1 Nov 2011 17:51:38 +0000 (10:51 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (62 commits)
mlx4_core: Deprecate log_num_vlan module param
IB/mlx4: Don't set VLAN in IBoE WQEs' control segment
IB/mlx4: Enable 4K mtu for IBoE
RDMA/cxgb4: Mark QP in error before disabling the queue in firmware
RDMA/cxgb4: Serialize calls to CQ's comp_handler
RDMA/cxgb3: Serialize calls to CQ's comp_handler
IB/qib: Fix issue with link states and QSFP cables
IB/mlx4: Configure extended active speeds
mlx4_core: Add extended port capabilities support
IB/qib: Hold links until tuning data is available
IB/qib: Clean up checkpatch issue
IB/qib: Remove s_lock around header validation
IB/qib: Precompute timeout jiffies to optimize latency
IB/qib: Use RCU for qpn lookup
IB/qib: Eliminate divide/mod in converting idx to egr buf pointer
IB/qib: Decode path MTU optimization
IB/qib: Optimize RC/UC code by IB operation
IPoIB: Use the right function to do DMA unmap pages
RDMA/cxgb4: Use correct QID in insert_recv_cqe()
RDMA/cxgb4: Make sure flush CQ entries are collected on connection close
...
Roland Dreier [Tue, 1 Nov 2011 16:37:08 +0000 (09:37 -0700)]
Merge branches 'amso1100', 'cma', 'cxgb3', 'cxgb4', 'fdr', 'ipath', 'ipoib', 'misc', 'mlx4', 'misc', 'nes', 'qib' and 'xrc' into for-next
Linus Torvalds [Tue, 1 Nov 2011 16:24:41 +0000 (09:24 -0700)]
Merge git://github.com/herbertx/crypto
* git://github.com/herbertx/crypto: (48 commits)
crypto: user - Depend on NET instead of selecting it
crypto: user - Add dependency on NET
crypto: talitos - handle descriptor not found in error path
crypto: user - Initialise match in crypto_alg_match
crypto: testmgr - add twofish tests
crypto: testmgr - add blowfish test-vectors
crypto: Make hifn_795x build depend on !ARCH_DMA_ADDR_T_64BIT
crypto: twofish-x86_64-3way - fix ctr blocksize to 1
crypto: blowfish-x86_64 - fix ctr blocksize to 1
crypto: whirlpool - count rounds from 0
crypto: Add userspace report for compress type algorithms
crypto: Add userspace report for cipher type algorithms
crypto: Add userspace report for rng type algorithms
crypto: Add userspace report for pcompress type algorithms
crypto: Add userspace report for nivaead type algorithms
crypto: Add userspace report for aead type algorithms
crypto: Add userspace report for givcipher type algorithms
crypto: Add userspace report for ablkcipher type algorithms
crypto: Add userspace report for blkcipher type algorithms
crypto: Add userspace report for ahash type algorithms
...
Eric W. Biederman [Tue, 1 Nov 2011 14:06:17 +0000 (07:06 -0700)]
sysfs: Make sysfs_rename safe with sysfs_dirents in rbtrees.
In sysfs_rename we need to remove the optimization of not calling
sysfs_unlink_sibling and sysfs_link_sibling if the renamed parent
directory is not changing. This optimization is no longer valid now
that sysfs dirents are stored in an rbtree sorted by name.
Move the assignment of s_ns before the call of sysfs_link_sibling. With
no sysfs_dirent fields changing after the call of sysfs_link_sibling
this allows sysfs_link_sibling to take any of the directory entries into
account when it builds the rbtrees, and s_ns looks like a prime canidate
to be used in the rbtree in the future.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Greg KH <gregkh@suse.de>
Cc: David Miller <davem@davemloft.net>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Tue, 1 Nov 2011 16:12:22 +0000 (17:12 +0100)]
Merge branch 'imx/devel' into next/dt
The board changes in the imx/devel branch conflict with other changes in
the device imx/dt branch.
Conflicts:
arch/arm/mach-mx5/board-mx53_loco.c
arch/arm/mach-mx5/board-mx53_smd.c
arch/arm/plat-mxc/include/mach/common.h
arch/arm/plat-mxc/include/mach/memory.h
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Linus Torvalds [Tue, 1 Nov 2011 14:48:13 +0000 (07:48 -0700)]
Merge Qualcom Hexagon architecture
This is the fifth version of the patchset (with one tiny whitespace fix)
to the Linux kernel to support the Qualcomm Hexagon architecture.
Between now and the next pull requests, Richard Kuo should have his key
signed, etc., and should be back on kernel.org. In the meantime, this
got merged as a emailed patch-series.
* Hexagon: (36 commits)
Add extra arch overrides to asm-generic/checksum.h
Hexagon: Add self to MAINTAINERS
Hexagon: Add basic stacktrace functionality for Hexagon architecture.
Hexagon: Add configuration and makefiles for the Hexagon architecture.
Hexagon: Comet platform support
Hexagon: kgdb support files
Hexagon: Add page-fault support.
Hexagon: Add page table header files & etc.
Hexagon: Add ioremap support
Hexagon: Provide DMA implementation
Hexagon: Implement basic TLB management routines for Hexagon.
Hexagon: Implement basic cache-flush support
Hexagon: Provide basic implementation and/or stubs for I/O routines.
Hexagon: Add user access functions
Hexagon: Add locking types and functions
Hexagon: Add SMP support
Hexagon: Provide basic debugging and system trap support.
Hexagon: Add ptrace support
Hexagon: Add time and timer functions
Hexagon: Add interrupts
...
Linas Vepstas [Mon, 31 Oct 2011 23:56:59 +0000 (18:56 -0500)]
Add extra arch overrides to asm-generic/checksum.h
There are plausible reasons for architectures to provide their own
versions of csum_partial_copy_nocheck and csum_tcpudp_magic.
By protecting these, the architecture can still re-use the
asm-generic checksum.h, instead of copying it.
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:56:38 +0000 (18:56 -0500)]
Hexagon: Add self to MAINTAINERS
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:56:19 +0000 (18:56 -0500)]
Hexagon: Add basic stacktrace functionality for Hexagon architecture.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:55:58 +0000 (18:55 -0500)]
Hexagon: Add configuration and makefiles for the Hexagon architecture.
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:55:25 +0000 (18:55 -0500)]
Hexagon: Comet platform support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linas Vepstas [Mon, 31 Oct 2011 23:54:43 +0000 (18:54 -0500)]
Hexagon: kgdb support files
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:54:08 +0000 (18:54 -0500)]
Hexagon: Add page-fault support.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:53:38 +0000 (18:53 -0500)]
Hexagon: Add page table header files & etc.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:52:53 +0000 (18:52 -0500)]
Hexagon: Add ioremap support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:52:22 +0000 (18:52 -0500)]
Hexagon: Provide DMA implementation
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:52:00 +0000 (18:52 -0500)]
Hexagon: Implement basic TLB management routines for Hexagon.
Mostly all stubs, as the TLB is managed by the hypervisor.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:50:51 +0000 (18:50 -0500)]
Hexagon: Implement basic cache-flush support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:48:50 +0000 (18:48 -0500)]
Hexagon: Provide basic implementation and/or stubs for I/O routines.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:48:07 +0000 (18:48 -0500)]
Hexagon: Add user access functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:47:33 +0000 (18:47 -0500)]
Hexagon: Add locking types and functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:46:34 +0000 (18:46 -0500)]
Hexagon: Add SMP support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:44:34 +0000 (18:44 -0500)]
Hexagon: Provide basic debugging and system trap support.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:43:44 +0000 (18:43 -0500)]
Hexagon: Add ptrace support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:43:24 +0000 (18:43 -0500)]
Hexagon: Add time and timer functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:42:51 +0000 (18:42 -0500)]
Hexagon: Add interrupts
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:42:28 +0000 (18:42 -0500)]
Hexagon: Add startup code
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:41:49 +0000 (18:41 -0500)]
Hexagon: Add init_task and process functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:41:21 +0000 (18:41 -0500)]
Hexagon: Add signal functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linas Vepstas [Mon, 31 Oct 2011 23:40:46 +0000 (18:40 -0500)]
Hexagon: Support dynamic module loading.
Modules should be compiled as ordinary .o's; shared objects are not
supported.
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linas Vepstas [Mon, 31 Oct 2011 23:40:19 +0000 (18:40 -0500)]
Hexagon: Export ksyms defined in assembly files.
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:39:14 +0000 (18:39 -0500)]
Hexagon: Add hypervisor interface
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:38:38 +0000 (18:38 -0500)]
Hexagon: Add memcpy and memset accelerated functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:38:04 +0000 (18:38 -0500)]
Hexagon: Add checksum functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:37:20 +0000 (18:37 -0500)]
Hexagon: Add delay functions
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:36:46 +0000 (18:36 -0500)]
Hexagon: Add threadinfo
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:36:04 +0000 (18:36 -0500)]
Hexagon: Add processor and system headers
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:35:16 +0000 (18:35 -0500)]
Hexagon: Add syscalls
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:28:13 +0000 (18:28 -0500)]
Hexagon: Add atomic ops support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:27:45 +0000 (18:27 -0500)]
Hexagon: Add bitops support
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:27:03 +0000 (18:27 -0500)]
Hexagon: Core arch-specific header files
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard Kuo [Mon, 31 Oct 2011 23:26:34 +0000 (18:26 -0500)]
Hexagon: Add generic headers
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Tue, 1 Nov 2011 12:47:27 +0000 (13:47 +0100)]
Merge branch 'depends/rmk/memory_h' into next/cleanup2
Theis resolves lots of simple conflicts between the omap
cleanup and the mach/memory.h removal series.
Conflicts:
arch/arm/mach-imx/mach-cpuimx27.c
arch/arm/mach-omap1/board-ams-delta.c
arch/arm/mach-omap1/board-generic.c
arch/arm/mach-omap1/board-h2.c
arch/arm/mach-omap1/board-h3.c
arch/arm/mach-omap1/board-nokia770.c
arch/arm/mach-omap1/board-osk.c
arch/arm/mach-omap1/board-palmte.c
arch/arm/mach-omap1/board-palmtt.c
arch/arm/mach-omap1/board-palmz71.c
arch/arm/mach-omap1/board-sx1.c
arch/arm/mach-omap1/board-voiceblue.c
arch/arm/mach-omap1/io.c
arch/arm/mach-omap2/board-generic.c
arch/arm/mach-omap2/io.c
arch/arm/plat-omap/io.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Herbert Xu [Tue, 1 Nov 2011 01:12:43 +0000 (12:12 +1100)]
crypto: user - Depend on NET instead of selecting it
Selecting NET causes all sorts of issues, including a dependency
loop involving bluetooth. This patch makes it a dependency instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Ben Dooks [Tue, 1 Nov 2011 00:54:17 +0000 (00:54 +0000)]
Merge branches 'for-32/i2c/nomadik', 'for-32/i2c/s3c2410-dt' and 'for-32/i2c/tegra-iomem' into for-linus/i2c-3.2
Ben Dooks [Tue, 1 Nov 2011 00:52:53 +0000 (00:52 +0000)]
Merge branch 'for-32/i2c/irqflags' into for-linus/i2c-3.2
Conflicts:
drivers/i2c/busses/i2c-designware-core.c
Fixed up merge conflic
Ben Dooks [Tue, 1 Nov 2011 00:50:09 +0000 (00:50 +0000)]
Merge branches 'for-32/i2c/omap-v4', 'for-32/i2c/imx-dt', 'for-32/i2c/eg20t-v4', 'for-32/i2c/designware-v5' and 'for-32/i2c/au1550' into for-linus/i2c-3.2
Linus Torvalds [Tue, 1 Nov 2011 00:46:07 +0000 (17:46 -0700)]
Merge branch 'akpm' (Andrew's incoming)
Quoth Andrew:
- Most of MM. Still waiting for the poweroc guys to get off their
butts and review some threaded hugepages patches.
- alpha
- vfs bits
- drivers/misc
- a few core kerenl tweaks
- printk() features
- MAINTAINERS updates
- backlight merge
- leds merge
- various lib/ updates
- checkpatch updates
* akpm: (127 commits)
epoll: fix spurious lockdep warnings
checkpatch: add a --strict check for utf-8 in commit logs
kernel.h/checkpatch: mark strict_strto<foo> and simple_strto<foo> as obsolete
llist-return-whether-list-is-empty-before-adding-in-llist_add-fix
wireless: at76c50x: follow rename pack_hex_byte to hex_byte_pack
fat: follow rename pack_hex_byte() to hex_byte_pack()
security: follow rename pack_hex_byte() to hex_byte_pack()
kgdb: follow rename pack_hex_byte() to hex_byte_pack()
lib: rename pack_hex_byte() to hex_byte_pack()
lib/string.c: fix strim() semantics for strings that have only blanks
lib/idr.c: fix comment for ida_get_new_above()
lib/percpu_counter.c: enclose hotplug only variables in hotplug ifdef
lib/bitmap.c: quiet sparse noise about address space
lib/spinlock_debug.c: print owner on spinlock lockup
lib/kstrtox: common code between kstrto*() and simple_strto*() functions
drivers/leds/leds-lp5521.c: check if reset is successful
leds: turn the blink_timer off before starting to blink
leds: save the delay values after a successful call to blink_set()
drivers/leds/leds-gpio.c: use gpio_get_value_cansleep() when initializing
drivers/leds/leds-lm3530.c: add __devexit_p where needed
...
Nelson Elhage [Tue, 1 Nov 2011 00:13:14 +0000 (17:13 -0700)]
epoll: fix spurious lockdep warnings
epoll can acquire recursively acquire ep->mtx on multiple "struct
eventpoll"s at once in the case where one epoll fd is monitoring another
epoll fd. This is perfectly OK, since we're careful about the lock
ordering, but it causes spurious lockdep warnings. Annotate the recursion
using mutex_lock_nested, and add a comment explaining the nesting rules
for good measure.
Recent versions of systemd are triggering this, and it can also be
demonstrated with the following trivial test program:
--------------------8<--------------------
int main(void) {
int e1, e2;
struct epoll_event evt = {
.events = EPOLLIN
};
e1 = epoll_create1(0);
e2 = epoll_create1(0);
epoll_ctl(e1, EPOLL_CTL_ADD, e2, &evt);
return 0;
}
--------------------8<--------------------
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Nelson Elhage <nelhage@nelhage.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: <stable@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 1 Nov 2011 00:13:12 +0000 (17:13 -0700)]
checkpatch: add a --strict check for utf-8 in commit logs
Some find using utf-8 in commit logs inappropriate.
Some patch commit logs contain unintended utf-8 characters when doing
things like copy/pasting compilation output.
Look for the start of any commit log by skipping initial lines that look
like email headers and "From: " lines.
Stop looking for utf-8 at the first signature line.
Signed-off-by: Joe Perches <joe@perches.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Tue, 1 Nov 2011 00:13:10 +0000 (17:13 -0700)]
kernel.h/checkpatch: mark strict_strto<foo> and simple_strto<foo> as obsolete
Mark obsolete/deprecated strict_strto<foo> and simple_strto<foo> functions
and macros as obsolete.
Update checkpatch to warn about their use.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Tue, 1 Nov 2011 00:13:08 +0000 (17:13 -0700)]
llist-return-whether-list-is-empty-before-adding-in-llist_add-fix
clarify comment
Cc: Huang Ying <ying.huang@intel.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Tue, 1 Nov 2011 00:13:00 +0000 (17:13 -0700)]
wireless: at76c50x: follow rename pack_hex_byte to hex_byte_pack
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Tue, 1 Nov 2011 00:12:57 +0000 (17:12 -0700)]
fat: follow rename pack_hex_byte() to hex_byte_pack()
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Tue, 1 Nov 2011 00:12:55 +0000 (17:12 -0700)]
security: follow rename pack_hex_byte() to hex_byte_pack()
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Mimi Zohar <zohar@us.ibm.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Tue, 1 Nov 2011 00:12:51 +0000 (17:12 -0700)]
kgdb: follow rename pack_hex_byte() to hex_byte_pack()
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Tue, 1 Nov 2011 00:12:41 +0000 (17:12 -0700)]
lib: rename pack_hex_byte() to hex_byte_pack()
As suggested by Andrew Morton in [1] there is better to have most
significant part first in the function name.
[1] https://lkml.org/lkml/2011/9/20/22
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Mimi Zohar <zohar@us.ibm.com>
Cc: James Morris <jmorris@namei.org>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Holzheu [Tue, 1 Nov 2011 00:12:37 +0000 (17:12 -0700)]
lib/string.c: fix strim() semantics for strings that have only blanks
Commit
84c95c9acf0 ("string: on strstrip(), first remove leading spaces
before running over str") improved
\7f the performance of the strim()
function.
Unfortunately this changed the semantics of strim() and broke my code.
Before the patch it was possible to use strim() without using the return
value for removing trailing spaces from strings that had either only
blanks or only trailing blanks.
Now this does not work any longer for strings that *only* have blanks.
Before patch: " " -> "" (empty string)
After patch: " " -> " " (no change)
I think we should remove your patch to restore the old behavior.
The description (lib/string.c):
* Note that the first trailing whitespace is replaced with a %NUL-terminator
=> The first trailing whitespace of a string that only has whitespace
characters is the first whitespace
The patch restores the old strim() semantics.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Cc: Andre Goddard Rosa <andre.goddard@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wang Sheng-Hui [Tue, 1 Nov 2011 00:12:36 +0000 (17:12 -0700)]
lib/idr.c: fix comment for ida_get_new_above()
Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Glauber Costa [Tue, 1 Nov 2011 00:12:34 +0000 (17:12 -0700)]
lib/percpu_counter.c: enclose hotplug only variables in hotplug ifdef
These variables are only used when CONFIG_HOTPLUG_CPU is enabled, they are
ifdef'ed everywhere else. So don't define them when CONFIG_HOTPLUG_CPU is
not enabled.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
H Hartley Sweeten [Tue, 1 Nov 2011 00:12:32 +0000 (17:12 -0700)]
lib/bitmap.c: quiet sparse noise about address space
__bitmap_parse() and __bitmap_parselist() both take a pointer to a kernel
buffer as a parameter and then cast it to a pointer to user buffer for use
in cases when the parameter is_user indicates that the buffer is actually
located in user space. This casting, and the casts in the callers,
results in sparse noise like the following:
warning: incorrect type in initializer (different address spaces)
expected char const [noderef] <asn:1>*ubuf
got char const *buf
warning: cast removes address space of expression
Since these casts are intentional, use __force to quiet the noise.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Akinobu Mita [Tue, 1 Nov 2011 00:12:29 +0000 (17:12 -0700)]
lib/spinlock_debug.c: print owner on spinlock lockup
When SPIN_BUG_ON is triggered, the lock owner information is reported.
But it is omitted when spinlock lockup is detected.
This information is useful especially on the architectures which don't
implement trigger_all_cpu_backtrace() that is called just after detecting
lockup. So report it and also avoid message format duplication.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexey Dobriyan [Tue, 1 Nov 2011 00:12:28 +0000 (17:12 -0700)]
lib/kstrtox: common code between kstrto*() and simple_strto*() functions
Currently termination logic (\0 or \n\0) is hardcoded in _kstrtoull(),
avoid that for code reuse between kstrto*() and simple_strtoull().
Essentially, make them different only in termination logic.
simple_strtoull() (and scanf(), BTW) ignores integer overflow, that's a
bug we currently don't have guts to fix, making KSTRTOX_OVERFLOW hack
necessary.
Almost forgot: patch shrinks code size by about ~80 bytes on x86_64.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Srinidhi KASAGAR [Tue, 1 Nov 2011 00:12:24 +0000 (17:12 -0700)]
drivers/leds/leds-lp5521.c: check if reset is successful
Make sure that the reset is successful by issuing a dummy read to R
channel current register and check its default value. On some platforms,
without this dummy read, any further access to {R/G/B}_EXEC will not have
any impact.
[akpm@linux-foundation.org: fix up code comment]
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Tested-by: Naga Radhesh <naga.radheshy@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Antonio Ospite [Tue, 1 Nov 2011 00:12:22 +0000 (17:12 -0700)]
leds: turn the blink_timer off before starting to blink
Depending on the implementation of the hardware blinking function in
blink_set(), the led can support hardware blinking for some values of
delay_on and delay_off and fall-back to software blinking for some other
values.
Turning off the blink_timer unconditionally before starting to blink
make sure that a sequence like:
OFF
hardware blinking
software blinking
hardware blinking
does not leave the software blinking timer active.
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: <stable@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Antonio Ospite [Tue, 1 Nov 2011 00:12:19 +0000 (17:12 -0700)]
leds: save the delay values after a successful call to blink_set()
When calling the hardware blinking function implemented by blink_set(),
the delay_on and delay_off values are not preserved across calls.
Fix that and make the "timer" trigger work as expected when hardware
blinking is available.
BEFORE the fix:
$ cd /sys/class/leds/someled
$ echo timer > trigger
$ cat delay_on delay_off
0
0
$ echo 100 > delay_on
$ cat delay_on delay_off
0
0
$ echo 100 > delay_off
$ cat delay_on delay_off
0
0
AFTER the fix:
$ cd /sys/class/leds/someled
$ echo timer > trigger
$ cat delay_on delay_off
0
0
$ echo 100 > delay_on
$ cat delay_on delay_off
100
0
$ echo 100 > delay_off
$ cat delay_on delay_off
100
100
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: <stable@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Daney [Tue, 1 Nov 2011 00:12:17 +0000 (17:12 -0700)]
drivers/leds/leds-gpio.c: use gpio_get_value_cansleep() when initializing
I get the following warning:
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:1559 __gpio_get_value+0x90/0x98()
Modules linked in:
Call Trace:
[<
ffffffff81440950>] dump_stack+0x8/0x34
[<
ffffffff81141478>] warn_slowpath_common+0x78/0xa0
[<
ffffffff812f0958>] __gpio_get_value+0x90/0x98
[<
ffffffff81434f04>] create_gpio_led+0xdc/0x194
[<
ffffffff8143524c>] gpio_led_probe+0x290/0x36c
[<
ffffffff8130e8b0>] driver_probe_device+0x78/0x1b0
[<
ffffffff8130eaa8>] __driver_attach+0xc0/0xc8
[<
ffffffff8130d7ac>] bus_for_each_dev+0x64/0xb0
[<
ffffffff8130e130>] bus_add_driver+0x1c8/0x2a8
[<
ffffffff8130f100>] driver_register+0x90/0x180
[<
ffffffff81100438>] do_one_initcall+0x38/0x160
---[ end trace
ee38723fbefcd65c ]---
My GPIOs are on an I2C port expander, so we must use the *_cansleep()
variant of the GPIO functions. This is was not being done in
create_gpio_led().
We can change gpio_get_value() to gpio_get_value_cansleep() because it is
only called from the platform_driver probe function, which is a context
where we can sleep.
Only tested on my gpio_cansleep() system, but it seems safe for all
systems.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Trent Piepho <tpiepho@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 1 Nov 2011 00:12:15 +0000 (17:12 -0700)]
drivers/leds/leds-lm3530.c: add __devexit_p where needed
According to the comments in include/linux/init.h:
"Pointers to __devexit functions must use __devexit_p(function_name), the
wrapper will insert either the function_name or NULL, depending on the config
options."
We have __devexit annotation for lm3530_remove(), so add __devexit_p to
the `struct i2c_driver'.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 1 Nov 2011 00:12:12 +0000 (17:12 -0700)]
drivers/leds/leds-lp5521.c: avoid writing uninitialized value to LP5521_REG_OP_MODE register
If lp5521_read fails, engine_state variable is not initialized.
If lp5521_read fails, we should return error.
This patch fixes below warning.
CC drivers/leds/leds-lp5521.o
drivers/leds/leds-lp5521.c: In function 'lp5521_set_engine_mode':
drivers/leds/leds-lp5521.c:168: warning: 'engine_state' may be used uninitialized in this function
[akpm@linux-foundation.org: remove unneeded "ret |="]
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Magnus Damm [Tue, 1 Nov 2011 00:12:09 +0000 (17:12 -0700)]
drivers/leds/leds-renesas-tpu.c: move Renesas TPU LED driver platform data
Use the platform_data include directory for the TPU LED driver, as
suggested by Paul Mundt.
Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Magnus Damm [Tue, 1 Nov 2011 00:12:06 +0000 (17:12 -0700)]
drivers/leds/leds-renesas-tpu.c: update driver to use workqueue
Use a workqueue in the Renesas TPU LED driver to allow the Runtime PM code
to sleep.
Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wolfram Sang [Tue, 1 Nov 2011 00:12:03 +0000 (17:12 -0700)]
drivers/leds/leds-lm3530.c: remove obsolete cleanup for clientdata
A few new i2c-drivers came into the kernel which clear the
clientdata-pointer on exit or error. This is obsolete meanwhile, the core
will do it.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Masakazu Mokuno [Tue, 1 Nov 2011 00:11:59 +0000 (17:11 -0700)]
drivers/leds/led-triggers.c: fix memory leak
The memory for struct led_trigger should be kfreed in the
led_trigger_register() error path. Also this function should return NULL
on error.
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Magnus Damm [Tue, 1 Nov 2011 00:11:55 +0000 (17:11 -0700)]
leds: Renesas TPU LED driver
Add V2 of the LED driver for a single timer channel for the TPU hardware
block commonly found in Renesas SoCs.
The driver has been written with optimal Power Management in mind, so to
save power the LED is driven as a regular GPIO pin in case of maximum
brightness and power off which allows the TPU hardware to be idle and
which in turn allows the clocks to be stopped and the power domain to be
turned off transparently.
Any other brightness level requires use of the TPU hardware in PWM mode.
TPU hardware device clocks and power are managed through Runtime PM.
System suspend and resume is known to be working - during suspend the LED
is set to off by the generic LED code.
The TPU hardware timer is equipeed with a 16-bit counter together with an
up-to-divide-by-64 prescaler which makes the hardware suitable for
brightness control. Hardware blink is unsupported.
The LED PWM waveform has been verified with a Fluke 123 Scope meter on a
sh7372 Mackerel board. Tested with experimental sh7372 A3SP power domain
patches. Platform device bind/unbind tested ok.
V2 has been tested on the DS2 LED of the sh73a0-based AG5EVM.
[axel.lin@gmail.com: include linux/module.h]
Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Axel Lin [Tue, 1 Nov 2011 00:11:52 +0000 (17:11 -0700)]
backlight: rename corgibl_limit_intensity() to genericbl_limit_intensity()
The rename of corgibl_limit_intensity is missed in commit
d00ba726
("backlight: Rename the corgi backlight driver to generic"). Let's fix it
now.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabio Estevam [Tue, 1 Nov 2011 00:11:50 +0000 (17:11 -0700)]
drivers/video/backlight/l4f00242t03.c: use gpio_request_one() to simplify error handling
Using gpio_request_one can make the error handling simpler.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Brown [Tue, 1 Nov 2011 00:11:48 +0000 (17:11 -0700)]
backlight: fix broken regulator API usage in l4f00242t03
The regulator support in the l4f00242t03 is very non-idiomatic. Rather
than requesting the regulators based on the device name and the supply
names used by the device the driver requires boards to pass system
specific supply names around through platform data. The driver also
conditionally requests the regulators based on this platform data, adding
unneeded conditional code to the driver.
Fix this by removing the platform data and converting to the standard
idiom, also updating all in tree users of the driver. As no datasheet
appears to be available for the LCD I'm guessing the names for the
supplies based on the existing users and I've no ability to do anything
more than compile test.
The use of regulator_set_voltage() in the driver is also problematic,
since fixed voltages are required the expectation would be that the
voltages would be fixed in the constraints set by the machines rather than
manually configured by the driver, but is less problematic.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wolfram Sang [Tue, 1 Nov 2011 00:11:44 +0000 (17:11 -0700)]
video/backlight: remove obsolete cleanup for clientdata
A few new i2c-drivers came into the kernel which clear the
clientdata-pointer on exit or error. This is obsolete meanwhile, the core
will do it.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jiri Kosina [Tue, 1 Nov 2011 00:11:41 +0000 (17:11 -0700)]
MAINTAINERS: add ASLR maintainer
Since achieving the full ASLR by merging the PIE randomization in commit
cc503c1b43 ("x86: PIE executable randomization"), I have been dealing with
most (if not all) of the bugreports reported against userspace address
space randomization, so it might be a good idea to provide a decent
contact point in MAINTAINERS.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linas Vepstas [Tue, 1 Nov 2011 00:11:38 +0000 (17:11 -0700)]
MAINTAINERS: Linas has moved
While ego surfing, I noticed an email address problem.
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / firefly-linux-kernel-4.4.55.git / log