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2013-11-26Input: add key code for ambient light sensor buttonPali Rohár
Many notebooks have a special button for enabling/disabling ambient light sensor. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-11-26Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Mostly bugfixes and a few small code removals. Worth pointing out is: - A handful of more fixes to get DT enablement working properly on OMAP, finding new breakage of things that don't work quite right yet without the traditional board files. I expect a bit more of this to come in this release as people test on their hardware. - Implementation of power_down_finish() on vexpress, to make kexec work and to stop the MCPM core to produce a warning (the warning was new to 3.13-rc1). - A handful of minor fixes for various platforms" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: bcm2835: add missing #xxx-cells to I2C nodes ARM: dts: Add max77686 RTC interrupt to cros5250-common ARM: vexpress/TC2: Implement MCPM power_down_finish() ARM: tegra: Provide dummy powergate implementation ARM: omap: fix warning with LPAE build ARM: OMAP2+: Remove legacy omap4_twl6030_hsmmc_init ARM: OMAP2+: Remove legacy mux code for display.c ARM: OMAP2+: Fix undefined reference to set_cntfreq gpio: twl4030: Fix passing of pdata in the device tree case gpio: twl4030: Fix regression for twl gpio output ARM: OMAP2+: More randconfig fixes for reconfigure_io_chain ARM: dts: imx6qdl: disable spdif "rxtx5" clock option ARM: dts: Fix omap2 specific dtsi files by adding the missing entries ARM: OMAP2+: Fix GPMC and simplify bootloader timings for 8250 and smc91x i2c: omap: Fix missing device tree flags for omap2
2013-11-26usb: phy: move OTG FSM headerAnton Tikhomirov
Other USB drivers may want to use OTG final state machine implementation, so make this header available for them. Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: musb: dsps: add support for suspend and resumeDaniel Mack
The dsps platform needs to save save some registers at suspend time and restore them after resume. This patch adds a struct for these registers, and also lets the musb core know that the core registers need to be saved as well. We also have to explicitly de-assert the port reset upon resume on this platform, but musb_port_reset() should not be called from glue layers. Hence, introduce a flag in struct musb_hdrc_config for this. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26tracing: Allow events to have NULL stringsSteven Rostedt (Red Hat)
If an TRACE_EVENT() uses __assign_str() or __get_str on a NULL pointer then the following oops will happen: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<c127a17b>] strlen+0x10/0x1a *pde = 00000000 ^M Oops: 0000 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.13.0-rc1-test+ #2 Hardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006^M task: f5cde9f0 ti: f5e5e000 task.ti: f5e5e000 EIP: 0060:[<c127a17b>] EFLAGS: 00210046 CPU: 1 EIP is at strlen+0x10/0x1a EAX: 00000000 EBX: c2472da8 ECX: ffffffff EDX: c2472da8 ESI: c1c5e5fc EDI: 00000000 EBP: f5e5fe84 ESP: f5e5fe80 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 CR0: 8005003b CR2: 00000000 CR3: 01f32000 CR4: 000007d0 Stack: f5f18b90 f5e5feb8 c10687a8 0759004f 00000005 00000005 00000005 00200046 00000002 00000000 c1082a93 f56c7e28 c2472da8 c1082a93 f5e5fee4 c106bc61^M 00000000 c1082a93 00000000 00000000 00000001 00200046 00200082 00000000 Call Trace: [<c10687a8>] ftrace_raw_event_lock+0x39/0xc0 [<c1082a93>] ? ktime_get+0x29/0x69 [<c1082a93>] ? ktime_get+0x29/0x69 [<c106bc61>] lock_release+0x57/0x1a5 [<c1082a93>] ? ktime_get+0x29/0x69 [<c10824dd>] read_seqcount_begin.constprop.7+0x4d/0x75 [<c1082a93>] ? ktime_get+0x29/0x69^M [<c1082a93>] ktime_get+0x29/0x69 [<c108a46a>] __tick_nohz_idle_enter+0x1e/0x426 [<c10690e8>] ? lock_release_holdtime.part.19+0x48/0x4d [<c10bc184>] ? time_hardirqs_off+0xe/0x28 [<c1068c82>] ? trace_hardirqs_off_caller+0x3f/0xaf [<c108a8cb>] tick_nohz_idle_enter+0x59/0x62 [<c1079242>] cpu_startup_entry+0x64/0x192 [<c102299c>] start_secondary+0x277/0x27c Code: 90 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e 5d c3 55 89 e5 57 66 66 66 66 90 83 c9 ff 89 c7 31 c0 <f2> ae f7 d1 8d 41 ff 5f 5d c3 55 89 e5 57 66 66 66 66 90 31 ff EIP: [<c127a17b>] strlen+0x10/0x1a SS:ESP 0068:f5e5fe80 CR2: 0000000000000000 ---[ end trace 01bc47bf519ec1b2 ]--- New tracepoints have been added that have allowed for NULL pointers being assigned to strings. To fix this, change the TRACE_EVENT() code to check for NULL and if it is, it will assign "(null)" to it instead (similar to what glibc printf does). Reported-by: Shuah Khan <shuah.kh@samsung.com> Reported-by: Jovi Zhangwei <jovi.zhangwei@gmail.com> Link: http://lkml.kernel.org/r/CAGdX0WFeEuy+DtpsJzyzn0343qEEjLX97+o1VREFkUEhndC+5Q@mail.gmail.com Link: http://lkml.kernel.org/r/528D6972.9010702@samsung.com Fixes: 9cbf117662e2 ("tracing/events: provide string with undefined size support") Cc: stable@vger.kernel.org # 2.6.31+ Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-11-26Merge tag 'efi-next' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi Pull EFI virtual mapping changes from Matt Fleming: * New static EFI runtime services virtual mapping layout which is groundwork for kexec support on EFI. (Borislav Petkov) Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-26panic: Make panic_timeout configurableJason Baron
The panic_timeout value can be set via the command line option 'panic=x', or via /proc/sys/kernel/panic, however that is not sufficient when the panic occurs before we are able to set up these values. Thus, add a CONFIG_PANIC_TIMEOUT so that we can set the desired value from the .config. The default panic_timeout value continues to be 0 - wait forever. Also adds set_arch_panic_timeout(new_timeout, arch_default_timeout), which is intended to be used by arches in arch_setup(). The idea being that the new_timeout is only set if the user hasn't changed from the arch_default_timeout. Signed-off-by: Jason Baron <jbaron@akamai.com> Cc: benh@kernel.crashing.org Cc: paulus@samba.org Cc: ralf@linux-mips.org Cc: mpe@ellerman.id.au Cc: felipe.contreras@gmail.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1a1674daec27c534df409697025ac568ebcee91e.1385418410.git.jbaron@akamai.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-11-26zorro/UAPI: Use proper types (endianness/size) in <linux/zorro.h>Geert Uytterhoeven
Fix member definitions for non-native userspace handling: - All multi-byte values are big-endian, hence use __be*, - All pointers are 32-bit pointers under AmigaOS, but unused (except for cd_BoardAddr) under Linux, hence use __be32. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26zorro/UAPI: Disintegrate include/linux/zorro*.hGeert Uytterhoeven
The Zorro definitions and device IDs are used by bootstraps, hence they should be exported through UAPI. Unfortunately zorro.h was never marked for export when headers_install was introduced, so it was forgotten during the big UAPI disintegration. In addition, the removal of zorro_ids.h had been sneaked into commit 7e7a43c32a8970ea2bfc3d1af353dcb1a9237769 ("PCI: don't export device IDs to userspace") before, so it was also forgotten. Split off and export the Zorro definitions used by bootstraps. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-26zorro: Do not allocate zorro_autocon[] staticallyGeert Uytterhoeven
Currently the array of Zorro devices is allocated statically, wasting up to 4.5 KiB when running an Amiga or multi-platform kernel on a machine with no or a handful of Zorro expansion cards. Convert it to conditional dynamic memory allocation to fix this. amiga_parse_bootinfo() still needs to store some information about the detected Zorro devices, at a time even the bootmem allocator is not yet available. This is now handled using a much smaller array (typically less than 0.5 KiB), which is __initdata and thus freed later. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2013-11-25Merge tag 'iio-for-3.14a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First set of new features, drivers and cleanups for IIO in the 3.14 cycle. This mostly consists of patches that didn't quite make the last cycle. Lots of interesting things under review currently. Core: - Add devm_iio_device_register/unregister. I took some convincing on whether there would be many devices that really were simple enough to need no explicit actions on removal. Turns out there are some. - Move some stray docs to above the relevant implemenation. - Drop a redundant repeated check on the fact the trigger has actually changed when there is a userspace attempt change it. Drivers: New drivers - Freescale MPL3115A2 Pressure / temperature sensor New functionality - hid_sensors: add sensitivity support. DT bindings - tsl2563 - hmc5843 Cleanups - Drop unused scan_type from viperboard adc driver. - devm_iio_device_register used in viperboard, ad5421, ad5755, adis16130, adxrs450, vcnl4000, adis16220, ad7816, lpc32xx, adt7316, adis16060, isl29018 and ad2s1200. Note that this was proposed in a number of other drivers and this revealed a number of missorderings in remove functions. Also for now I have blocked this on any device that any hardware suspend suport on the basis that we probably want to power down devices if they have no driver support loaded.
2013-11-25PCI: Omit PCI ID macro strings to shorten quirk namesMichal Marek
Pasting the verbatim PCI_(VENDOR|DEVICE)_* macros in the __pci_fixup_* symbol names results in insanely long names such as __pci_fixup_resumePCI_VENDOR_ID_SERVERWORKSPCI_DEVICE_ID_SERVERWORKS_HT1000SBquirk_disable_broadcom_boot_interrupt When Link-Time Optimization adds its numeric suffix to such symbol, it overflows the namebuf[KSYM_NAME_LEN] array in kernel/kallsyms.c. Use the line number instead to create (nearly) unique symbol names. Reported-by: Joe Mario <jmario@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Andi Kleen <ak@linux.intel.com>
2013-11-25ARM: tegra: Provide dummy powergate implementationThierry Reding
In order to support increased build test coverage for drivers, implement dummies for the powergate implementation. This will allow the drivers to be built without requiring support for Tegra to be selected. This patch solves the following build errors, which can be triggered in v3.13-rc1 by selecting DRM_TEGRA without ARCH_TEGRA: drivers/built-in.o: In function `gr3d_remove': drivers/gpu/drm/tegra/gr3d.c:321: undefined reference to `tegra_powergate_power_off' drivers/gpu/drm/tegra/gr3d.c:325: undefined reference to `tegra_powergate_power_off' drivers/built-in.o: In function `gr3d_probe': drivers/gpu/drm/tegra/gr3d.c:266: undefined reference to `tegra_powergate_sequence_power_up' drivers/gpu/drm/tegra/gr3d.c:273: undefined reference to `tegra_powergate_sequence_power_up' Signed-off-by: Thierry Reding <treding@nvidia.com> [swarren, updated commit description] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-11-25Merge branches 'acpi-hotplug', 'acpi-sysfs' and 'acpi-sleep'Rafael J. Wysocki
* acpi-hotplug: ACPI / hotplug: Fix conflicted PCI bridge notify handlers * acpi-sysfs: ACPI / sysfs: Fix incorrect ACPI tables walk in acpi_tables_sysfs_init() ACPI / sysfs: Set file size for each exposed ACPI table * acpi-sleep: ACPI / sleep: clean up compiler warning about uninitialized field
2013-11-25Merge tag 'fixes-for-3.13a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First round of fixes for IIO in the 3.13 cycle. The usual mixed bag of fixes. * 3 cases where kconfig dependencies were missing. We need to keep a closer eye on this in new drivers. * hid_sensors was abusing the iio_dev->trigger pointer. We had a round of clearing this out some time ago but this driver clearly slipped through. * A misuse of the IIO_ST macro, in mcp3422, which we should really make a concertive effort to finish removing. * Avoid a double free introduced by recent buffer reference counting in the one driver that (quite reasonably!) does things differently (am335x) * A missing mutex_unlock in kxsd9 that means that driver has been non functional for some time and no one noticed (including me who for once actually has one of the supported devices). * An incorrect assumption about the parameters of sign_extend32 in mcp3422. So nothing controversial. The only substantial patch is the hid_sensors one and that is actually just adding a new pointer to the devices private state then moving the code over to it.
2013-11-25ASoC: Fix build without CONFIG_GPIOLIBTakashi Iwai
snd_soc_jack_gpio stuff is currently enabled for CONFIG_GPIOLIB explicitly with ifdef, and this causes build errors on some drivers such as: sound/soc/omap/rx51.c:220:33: error: array type has incomplete element type Remove ifdef and provide dummy functions for CONFIG_GPIOLIB=n case instead. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-11-25gpio: Remove duplicate include of errno.hVishwanathrao Badarkhe, Manish
Currently, code include errno.h twice. Remove one inclusion of errno.h Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-25gpiolib: use dedicated flags for GPIO propertiesAlexandre Courbot
GPIO mapping properties were defined using the GPIOF_* flags, which are declared in linux/gpio.h. This file is not included when using the GPIO descriptor interface. This patch declares the flags that can be used as GPIO mappings properties in linux/gpio/driver.h, and uses them in gpiolib, so that no deprecated declarations are used by the GPIO descriptor interface. This patch also allows GPIO_OPEN_DRAIN and GPIO_OPEN_SOURCE to be specified as GPIO mapping properties. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-11-24iio: core: Move kernel doc to the right locationSachin Kamat
Documentation related to function should be placed above its implementation. Move it accordingly. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-11-24iio: core: Implement devm_iio_device_{register,unregister}Sachin Kamat
Add device managed devm_iio_device_{register,unregister}() to automatically unregister IIO drivers thus leading to simplified IIO driver code. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Tested-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-11-24slab.h: remove duplicate kmalloc declaration and fix kernel-doc warningsRandy Dunlap
Fix kernel-doc warning for duplicate definition of 'kmalloc': Documentation/DocBook/kernel-api.xml:9483: element refentry: validity error : ID API-kmalloc already defined <refentry id="API-kmalloc"> Also combine the kernel-doc info from the 2 kmalloc definitions into one block and remove the "see kcalloc" comment since kmalloc now contains the @flags info. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-24Merge tag 'v3.13-rc1' into asoc-arizonaMark Brown
Linux 3.13-rc1
2013-11-24ASoC: dapm: Use SND_SOC_DAPM_INIT_REG_VAL in SND_SOC_DAPM_MUXStephen Warren
SND_SOC_DAPM_MUX() doesn't currently initialize the .mask field. This results in the mux never affecting HW, since no bits are ever set or cleared. Fix SND_SOC_DAPM_MUX() to use SND_SOC_DAPM_INIT_REG_VAL() to set up the reg, shift, on_val, and off_val fields like almost all other SND_SOC_xxx() macros. It looks like this was a "typo" in the fixed commit linked below. This makes the speakers on the Toshiba AC100 (PAZ00) laptop work again. Fixes: de9ba98b6d26 ("ASoC: dapm: Make widget power register settings more flexible") Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: <stable@vger.kernel.org> # v3.12+
2013-11-24ASoC: soc-pcm: add symmetry for channels and sample bitsNicolin Chen
Some SoCs can only work in mono or stereo mode at one time. So if we let them capture a mono stream while playing a stereo stream, there might be a problem occur to one of these two streams: double paced or slowed down. In soc-pcm.c, we have soc_pcm_apply_symmetry() to apply the rate symmetry. But we don't have one for channels. Likewise, we can treat symmetric_rate as a solution for those SoCs or CODECs which can not handle asymmetrical LRCLK. But it's also impossible for them to handle asymmetrical BCLK. And accodring to BCLK = LRCLK * channel number * slot size(fixed or sample bits), sample bits might also be a problem if they are not using a fixed slot size. Thus, this patch applys symmetry for channels and sample bits. Meanwhile, there might be a race between two substreams if starting simultaneously. Previously, we only added warning to compalin but still using conservative way to let it carry on. However, this patch rejects the second stream with any unmatched parameter to make sure the first existing stream won't be broken. Signed-off-by: Nicolin Chen <b42378@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-11-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto update from Herbert Xu: - Made x86 ablk_helper generic for ARM - Phase out chainiv in favour of eseqiv (affects IPsec) - Fixed aes-cbc IV corruption on s390 - Added constant-time crypto_memneq which replaces memcmp - Fixed aes-ctr in omap-aes - Added OMAP3 ROM RNG support - Add PRNG support for MSM SoC's - Add and use Job Ring API in caam - Misc fixes [ NOTE! This pull request was sent within the merge window, but Herbert has some questionable email sending setup that makes him public enemy #1 as far as gmail is concerned. So most of his emails seem to be trapped by gmail as spam, resulting in me not seeing them. - Linus ] * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (49 commits) crypto: s390 - Fix aes-cbc IV corruption crypto: omap-aes - Fix CTR mode counter length crypto: omap-sham - Add missing modalias padata: make the sequence counter an atomic_t crypto: caam - Modify the interface layers to use JR API's crypto: caam - Add API's to allocate/free Job Rings crypto: caam - Add Platform driver for Job Ring hwrng: msm - Add PRNG support for MSM SoC's ARM: DT: msm: Add Qualcomm's PRNG driver binding document crypto: skcipher - Use eseqiv even on UP machines crypto: talitos - Simplify key parsing crypto: picoxcell - Simplify and harden key parsing crypto: ixp4xx - Simplify and harden key parsing crypto: authencesn - Simplify key parsing crypto: authenc - Export key parsing helper function crypto: mv_cesa: remove deprecated IRQF_DISABLED hwrng: OMAP3 ROM Random Number Generator support crypto: sha256_ssse3 - also test for BMI2 crypto: mv_cesa - Remove redundant of_match_ptr crypto: sahara - Remove redundant of_match_ptr ...
2013-11-23inet: fix addr_len/msg->msg_namelen assignment in recv_error and rxpmtu ↵Hannes Frederic Sowa
functions Commit bceaa90240b6019ed73b49965eac7d167610be69 ("inet: prevent leakage of uninitialized memory to user in recv syscalls") conditionally updated addr_len if the msg_name is written to. The recv_error and rxpmtu functions relied on the recvmsg functions to set up addr_len before. As this does not happen any more we have to pass addr_len to those functions as well and set it to the size of the corresponding sockaddr length. This broke traceroute and such. Fixes: bceaa90240b6 ("inet: prevent leakage of uninitialized memory to user in recv syscalls") Reported-by: Brad Spengler <spender@grsecurity.net> Reported-by: Tom Labanowski Cc: mpb <mpb.mail@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-22cgroup: Merge branch 'memcg_event' into for-3.14Tejun Heo
Merge v3.12 based patch series to move cgroup_event implementation to memcg into for-3.14. The following two commits cause a conflict in kernel/cgroup.c 2ff2a7d03bbe4 ("cgroup: kill css_id") 79bd9814e5ec9 ("cgroup, memcg: move cgroup_event implementation to memcg") Each patch removes a struct definition from kernel/cgroup.c. As the two are adjacent, they cause a context conflict. Easily resolved by removing both structs. Signed-off-by: Tejun Heo <tj@kernel.org>
2013-11-22cgroup: unexport cgroup_css() and remove __file_cft()Tejun Heo
Now that cgroup_event is made memcg specific, the temporarily exported functions are no longer necessary. Unexport cgroup_css() and remove __file_cft() which doesn't have any user left. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
2013-11-22memcg: make cgroup_event deal with mem_cgroup instead of cgroup_subsys_stateTejun Heo
cgroup_event is now memcg specific. Replace cgroup_event->css with ->memcg and convert [un]register_event() callbacks to take mem_cgroup pointer instead of cgroup_subsys_state one. This simplifies the code slightly and makes css_to_vmpressure() unnecessary which is removed. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.cz>
2013-11-22memcg: remove cgroup_event->cftTejun Heo
The only use of cgroup_event->cft is distinguishing "usage_in_bytes" and "memsw.usgae_in_bytes" for mem_cgroup_usage_[un]register_event(), which can be done by adding an explicit argument to the function and implementing two wrappers so that the two cases can be distinguished from the function alone. Remove cgroup_event->cft and the related code including [un]register_events() methods. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.cz>
2013-11-22cgroup, memcg: move cgroup->event_list[_lock] and event callbacks into memcgTejun Heo
cgroup_event is being moved from cgroup core to memcg and the implementation is already moved by the previous patch. This patch moves the data fields and callbacks. * cgroup->event_list[_lock] are moved to mem_cgroup. * cftype->[un]register_event() are moved to cgroup_event. This makes it impossible for individual cftype definitions to specify their event callbacks. This is worked around by simply hard-coding filename to event callback mapping in cgroup_write_event_control(). This is awkward and inflexible, which is actually desirable given that we don't want to grow more usages of this feature. * eventfd_ctx declaration is removed from cgroup.h, which makes vmpressure.h miss eventfd_ctx declaration. Include eventfd.h from vmpressure.h. v2: Use file name from dentry instead of cftype. This will allow removing all cftype handling in the function. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Balbir Singh <bsingharora@gmail.com>
2013-11-22cgroup, memcg: move cgroup_event implementation to memcgTejun Heo
cgroup_event is way over-designed and tries to build a generic flexible event mechanism into cgroup - fully customizable event specification for each user of the interface. This is utterly unnecessary and overboard especially in the light of the planned unified hierarchy as there's gonna be single agent. Simply generating events at fixed points, or if that's too restrictive, configureable cadence or single set of configureable points should be enough. Thankfully, memcg is the only user and gets to keep it. Replacing it with something simpler on sane_behavior is strongly recommended. This patch moves cgroup_event and "cgroup.event_control" implementation to mm/memcontrol.c. Clearing of events on cgroup destruction is moved from cgroup_destroy_locked() to mem_cgroup_css_offline(), which shouldn't make any noticeable difference. cgroup_css() and __file_cft() are exported to enable the move; however, this will soon be reverted once the event code is updated to be memcg specific. Note that "cgroup.event_control" will now exist only on the hierarchy with memcg attached to it. While this change is visible to userland, it is unlikely to be noticeable as the file has never been meaningful outside memcg. Aside from the above change, this is pure code relocation. v2: Per Li Zefan's comments, init/Kconfig updated accordingly and poll.h inclusion moved from cgroup.c to memcontrol.c. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Balbir Singh <bsingharora@gmail.com>
2013-11-22Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull DRM fixes from Dave Airlie: "I was going to leave this until post -rc1 but sysfs fixes broke hotplug in userspace, so I had to fix it harder, otherwise a set of pulls from intel, radeon and vmware, The vmware/ttm changes are bit larger but since its early and they are unlikely to break anything else I put them in, it lets vmware work with dri3" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (36 commits) drm/sysfs: fix hotplug regression since lifetime changes drm/exynos: g2d: fix memory leak to userptr drm/i915: Fix gen3 self-refresh watermarks drm/ttm: Remove set_need_resched from the ttm fault handler drm/ttm: Don't move non-existing data drm/radeon: hook up backlight functions for CI and KV family. drm/i915: Replicate BIOS eDP bpp clamping hack for hsw drm/i915: Do not enable package C8 on unsupported hardware drm/i915: Hold pc8 lock around toggling pc8.gpu_idle drm/i915: encoder->get_config is no longer optional drm/i915/tv: add ->get_config callback drm/radeon/cik: Add macrotile mode array query drm/radeon/cik: Return backend map information to userspace drm/vmwgfx: Make vmwgfx dma buffers prime aware drm/vmwgfx: Make surfaces prime-aware drm/vmwgfx: Hook up the prime ioctls drm/ttm: Add a minimal prime implementation for ttm base objects drm/vmwgfx: Fix false lockdep warning drm/ttm: Allow execbuf util reserves without ticket drm/i915: restore the early forcewake cleanup ...
2013-11-22Merge tag 'pci-v3.13-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Miscellaneous - Remove duplicate disable from pcie_portdrv_remove() (Yinghai Lu) - Fix whitespace, capitalization, and spelling errors (Bjorn Helgaas)" * tag 'pci-v3.13-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Remove duplicate pci_disable_device() from pcie_portdrv_remove() PCI: Fix whitespace, capitalization, and spelling errors
2013-11-22Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "Things have been quiet this round with mostly bugfixes, percpu conversions, and other minor iscsi-target conformance testing changes. The highlights include: - Add demo_mode_discovery attribute for iscsi-target (Thomas) - Convert tcm_fc(FCoE) to use percpu-ida pre-allocation - Add send completion interrupt coalescing for ib_isert - Convert target-core to use percpu-refcounting for se_lun - Fix mutex_trylock usage bug in iscsit_increment_maxcmdsn - tcm_loop updates (Hannes) - target-core ALUA cleanups + prep for v3.14 SCSI Referrals support (Hannes) v3.14 is currently shaping to be a busy development cycle in target land, with initial support for T10 Referrals and T10 DIF currently on the roadmap" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (40 commits) iscsi-target: chap auth shouldn't match username with trailing garbage iscsi-target: fix extract_param to handle buffer length corner case iscsi-target: Expose default_erl as TPG attribute target_core_configfs: split up ALUA supported states target_core_alua: Make supported states configurable target_core_alua: Store supported ALUA states target_core_alua: Rename ALUA_ACCESS_STATE_OPTIMIZED target_core_alua: spellcheck target core: rename (ex,im)plict -> (ex,im)plicit percpu-refcount: Add percpu-refcount.o to obj-y iscsi-target: Do not reject non-immediate CmdSNs exceeding MaxCmdSN iscsi-target: Convert iscsi_session statistics to atomic_long_t target: Convert se_device statistics to atomic_long_t target: Fix delayed Task Aborted Status (TAS) handling bug iscsi-target: Reject unsupported multi PDU text command sequence ib_isert: Avoid duplicate iscsit_increment_maxcmdsn call iscsi-target: Fix mutex_trylock usage in iscsit_increment_maxcmdsn target: Core does not need blkdev.h target: Pass through I/O topology for block backstores iser-target: Avoid using FRMR for single dma entry requests ...
2013-11-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix memory leaks and other issues in mwifiex driver, from Amitkumar Karwar. 2) skb_segment() can choke on packets using frag lists, fix from Herbert Xu with help from Eric Dumazet and others. 3) IPv4 output cached route instantiation properly handles races involving two threads trying to install the same route, but we forgot to propagate this logic to input routes as well. Fix from Alexei Starovoitov. 4) Put protections in place to make sure that recvmsg() paths never accidently copy uninitialized memory back into userspace and also make sure that we never try to use more that sockaddr_storage for building the on-kernel-stack copy of a sockaddr. Fixes from Hannes Frederic Sowa. 5) R8152 driver transmit flow bug fixes from Hayes Wang. 6) Fix some minor fallouts from genetlink changes, from Johannes Berg and Michael Opdenacker. 7) AF_PACKET sendmsg path can race with netdevice unregister notifier, fix by using RCU to make sure the network device doesn't go away from under us. Fix from Daniel Borkmann. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits) gso: handle new frag_list of frags GRO packets genetlink: fix genl_set_err() group ID genetlink: fix genlmsg_multicast() bug packet: fix use after free race in send path when dev is released xen-netback: stop the VIF thread before unbinding IRQs wimax: remove dead code net/phy: Add the autocross feature for forced links on VSC82x4 net/phy: Add VSC8662 support net/phy: Add VSC8574 support net/phy: Add VSC8234 support net: add BUG_ON if kernel advertises msg_namelen > sizeof(struct sockaddr_storage) net: rework recvmsg handler msg_name and msg_namelen logic bridge: flush br's address entry in fdb when remove the net: core: Always propagate flag changes to interfaces ipv4: fix race in concurrent ip_route_input_slow() r8152: fix incorrect type in assignment r8152: support stopping/waking tx queue r8152: modify the tx flow r8152: fix tx/rx memory overflow netfilter: ebt_ip6: fix source and destination matching ...
2013-11-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "Almost all of these are bug fixes. Dave Sterba's documentation update is the big exception because he removed our promises to set any machine running Btrfs on fire" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Documentation: filesystems: update btrfs tools section Documentation: filesystems: add new btrfs mount options btrfs: update kconfig help text btrfs: fix bio_size_ok() for max_sectors > 0xffff btrfs: Use trace condition for get_extent tracepoint btrfs: fix typo in the log message Btrfs: fix list delete warning when removing ordered root from the list Btrfs: print bytenr instead of page pointer in check-int Btrfs: remove dead codes from ctree.h Btrfs: don't wait for ordered data outside desired range Btrfs: fix lockdep error in async commit Btrfs: avoid heavy operations in btrfs_commit_super Btrfs: fix __btrfs_start_workers retval Btrfs: disable online raid-repair on ro mounts Btrfs: do not inc uncorrectable_errors counter on ro scrubs Btrfs: only drop modified extents if we logged the whole inode Btrfs: make sure to copy everything if we rename Btrfs: don't BUG_ON() if we get an error walking backrefs
2013-11-22Merge branch 'slab/next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux Pull SLAB changes from Pekka Enberg: "The patches from Joonsoo Kim switch mm/slab.c to use 'struct page' for slab internals similar to mm/slub.c. This reduces memory usage and improves performance: https://lkml.org/lkml/2013/10/16/155 Rest of the changes are bug fixes from various people" * 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: (21 commits) mm, slub: fix the typo in mm/slub.c mm, slub: fix the typo in include/linux/slub_def.h slub: Handle NULL parameter in kmem_cache_flags slab: replace non-existing 'struct freelist *' with 'void *' slab: fix to calm down kmemleak warning slub: proper kmemleak tracking if CONFIG_SLUB_DEBUG disabled slab: rename slab_bufctl to slab_freelist slab: remove useless statement for checking pfmemalloc slab: use struct page for slab management slab: replace free and inuse in struct slab with newly introduced active slab: remove SLAB_LIMIT slab: remove kmem_bufctl_t slab: change the management method of free objects of the slab slab: use __GFP_COMP flag for allocating slab pages slab: use well-defined macro, virt_to_slab() slab: overloading the RCU head over the LRU for RCU free slab: remove cachep in struct slab_rcu slab: remove nodeid in struct slab slab: remove colouroff in struct slab slab: change return type of kmem_getpages() to struct page ...
2013-11-21Merge branch 'akpm' (fixes from Andrew)Linus Torvalds
Merge patches from Andrew Morton: "13 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: place page->pmd_huge_pte to right union MAINTAINERS: add keyboard driver to Hyper-V file list x86, mm: do not leak page->ptl for pmd page tables ipc,shm: correct error return value in shmctl (SHM_UNLOCK) mm, mempolicy: silence gcc warning block/partitions/efi.c: fix bound check ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown mm: hugetlbfs: fix hugetlbfs optimization kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS cleanly ipc,shm: fix shm_file deletion races mm: thp: give transparent hugepage code a separate copy_page checkpatch: fix "Use of uninitialized value" warnings configfs: fix race between dentry put and lookup
2013-11-21Merge branch 'for-linus2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "In this patchset, we finally get an SELinux update, with Paul Moore taking over as maintainer of that code. Also a significant update for the Keys subsystem, as well as maintenance updates to Smack, IMA, TPM, and Apparmor" and since I wanted to know more about the updates to key handling, here's the explanation from David Howells on that: "Okay. There are a number of separate bits. I'll go over the big bits and the odd important other bit, most of the smaller bits are just fixes and cleanups. If you want the small bits accounting for, I can do that too. (1) Keyring capacity expansion. KEYS: Consolidate the concept of an 'index key' for key access KEYS: Introduce a search context structure KEYS: Search for auth-key by name rather than target key ID Add a generic associative array implementation. KEYS: Expand the capacity of a keyring Several of the patches are providing an expansion of the capacity of a keyring. Currently, the maximum size of a keyring payload is one page. Subtract a small header and then divide up into pointers, that only gives you ~500 pointers on an x86_64 box. However, since the NFS idmapper uses a keyring to store ID mapping data, that has proven to be insufficient to the cause. Whatever data structure I use to handle the keyring payload, it can only store pointers to keys, not the keys themselves because several keyrings may point to a single key. This precludes inserting, say, and rb_node struct into the key struct for this purpose. I could make an rbtree of records such that each record has an rb_node and a key pointer, but that would use four words of space per key stored in the keyring. It would, however, be able to use much existing code. I selected instead a non-rebalancing radix-tree type approach as that could have a better space-used/key-pointer ratio. I could have used the radix tree implementation that we already have and insert keys into it by their serial numbers, but that means any sort of search must iterate over the whole radix tree. Further, its nodes are a bit on the capacious side for what I want - especially given that key serial numbers are randomly allocated, thus leaving a lot of empty space in the tree. So what I have is an associative array that internally is a radix-tree with 16 pointers per node where the index key is constructed from the key type pointer and the key description. This means that an exact lookup by type+description is very fast as this tells us how to navigate directly to the target key. I made the data structure general in lib/assoc_array.c as far as it is concerned, its index key is just a sequence of bits that leads to a pointer. It's possible that someone else will be able to make use of it also. FS-Cache might, for example. (2) Mark keys as 'trusted' and keyrings as 'trusted only'. KEYS: verify a certificate is signed by a 'trusted' key KEYS: Make the system 'trusted' keyring viewable by userspace KEYS: Add a 'trusted' flag and a 'trusted only' flag KEYS: Separate the kernel signature checking keyring from module signing These patches allow keys carrying asymmetric public keys to be marked as being 'trusted' and allow keyrings to be marked as only permitting the addition or linkage of trusted keys. Keys loaded from hardware during kernel boot or compiled into the kernel during build are marked as being trusted automatically. New keys can be loaded at runtime with add_key(). They are checked against the system keyring contents and if their signatures can be validated with keys that are already marked trusted, then they are marked trusted also and can thus be added into the master keyring. Patches from Mimi Zohar make this usable with the IMA keyrings also. (3) Remove the date checks on the key used to validate a module signature. X.509: Remove certificate date checks It's not reasonable to reject a signature just because the key that it was generated with is no longer valid datewise - especially if the kernel hasn't yet managed to set the system clock when the first module is loaded - so just remove those checks. (4) Make it simpler to deal with additional X.509 being loaded into the kernel. KEYS: Load *.x509 files into kernel keyring KEYS: Have make canonicalise the paths of the X.509 certs better to deduplicate The builder of the kernel now just places files with the extension ".x509" into the kernel source or build trees and they're concatenated by the kernel build and stuffed into the appropriate section. (5) Add support for userspace kerberos to use keyrings. KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches KEYS: Implement a big key type that can save to tmpfs Fedora went to, by default, storing kerberos tickets and tokens in tmpfs. We looked at storing it in keyrings instead as that confers certain advantages such as tickets being automatically deleted after a certain amount of time and the ability for the kernel to get at these tokens more easily. To make this work, two things were needed: (a) A way for the tickets to persist beyond the lifetime of all a user's sessions so that cron-driven processes can still use them. The problem is that a user's session keyrings are deleted when the session that spawned them logs out and the user's user keyring is deleted when the UID is deleted (typically when the last log out happens), so neither of these places is suitable. I've added a system keyring into which a 'persistent' keyring is created for each UID on request. Each time a user requests their persistent keyring, the expiry time on it is set anew. If the user doesn't ask for it for, say, three days, the keyring is automatically expired and garbage collected using the existing gc. All the kerberos tokens it held are then also gc'd. (b) A key type that can hold really big tickets (up to 1MB in size). The problem is that Active Directory can return huge tickets with lots of auxiliary data attached. We don't, however, want to eat up huge tracts of unswappable kernel space for this, so if the ticket is greater than a certain size, we create a swappable shmem file and dump the contents in there and just live with the fact we then have an inode and a dentry overhead. If the ticket is smaller than that, we slap it in a kmalloc()'d buffer" * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (121 commits) KEYS: Fix keyring content gc scanner KEYS: Fix error handling in big_key instantiation KEYS: Fix UID check in keyctl_get_persistent() KEYS: The RSA public key algorithm needs to select MPILIB ima: define '_ima' as a builtin 'trusted' keyring ima: extend the measurement list to include the file signature kernel/system_certificate.S: use real contents instead of macro GLOBAL() KEYS: fix error return code in big_key_instantiate() KEYS: Fix keyring quota misaccounting on key replacement and unlink KEYS: Fix a race between negating a key and reading the error set KEYS: Make BIG_KEYS boolean apparmor: remove the "task" arg from may_change_ptraced_domain() apparmor: remove parent task info from audit logging apparmor: remove tsk field from the apparmor_audit_struct apparmor: fix capability to not use the current task, during reporting Smack: Ptrace access check mode ima: provide hash algo info in the xattr ima: enable support for larger default filedata hash algorithms ima: define kernel parameter 'ima_template=' to change configured default ima: add Kconfig default measurement list template ...
2013-11-21Merge git://git.infradead.org/users/eparis/auditLinus Torvalds
Pull audit updates from Eric Paris: "Nothing amazing. Formatting, small bug fixes, couple of fixes where we didn't get records due to some old VFS changes, and a change to how we collect execve info..." Fixed conflict in fs/exec.c as per Eric and linux-next. * git://git.infradead.org/users/eparis/audit: (28 commits) audit: fix type of sessionid in audit_set_loginuid() audit: call audit_bprm() only once to add AUDIT_EXECVE information audit: move audit_aux_data_execve contents into audit_context union audit: remove unused envc member of audit_aux_data_execve audit: Kill the unused struct audit_aux_data_capset audit: do not reject all AUDIT_INODE filter types audit: suppress stock memalloc failure warnings since already managed audit: log the audit_names record type audit: add child record before the create to handle case where create fails audit: use given values in tty_audit enable api audit: use nlmsg_len() to get message payload length audit: use memset instead of trying to initialize field by field audit: fix info leak in AUDIT_GET requests audit: update AUDIT_INODE filter rule to comparator function audit: audit feature to set loginuid immutable audit: audit feature to only allow unsetting the loginuid audit: allow unsetting the loginuid (with priv) audit: remove CONFIG_AUDIT_LOGINUID_IMMUTABLE audit: loginuid functions coding style selinux: apply selinux checks on new audit message types ...
2013-11-21mm: place page->pmd_huge_pte to right unionKirill A. Shutemov
I don't know what went wrong, mis-merge or something, but ->pmd_huge_pte placed in wrong union within struct page. In original patch[1] it's placed to union with ->lru and ->slab, but in commit e009bb30c8df ("mm: implement split page table lock for PMD level") it's in union with ->index and ->freelist. That union seems also unused for pages with table tables and safe to re-use, but it's not what I've tested. Let's move it to original place. It fixes indentation at least. :) [1] https://lkml.org/lkml/2013/10/7/288 Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-21mm: hugetlbfs: fix hugetlbfs optimizationAndrea Arcangeli
Commit 7cb2ef56e6a8 ("mm: fix aio performance regression for database caused by THP") can cause dereference of a dangling pointer if split_huge_page runs during PageHuge() if there are updates to the tail_page->private field. Also it is repeating compound_head twice for hugetlbfs and it is running compound_head+compound_trans_head for THP when a single one is needed in both cases. The new code within the PageSlab() check doesn't need to verify that the THP page size is never bigger than the smallest hugetlbfs page size, to avoid memory corruption. A longstanding theoretical race condition was found while fixing the above (see the change right after the skip_unlock label, that is relevant for the compound_lock path too). By re-establishing the _mapcount tail refcounting for all compound pages, this also fixes the below problem: echo 0 >/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages BUG: Bad page state in process bash pfn:59a01 page:ffffea000139b038 count:0 mapcount:10 mapping: (null) index:0x0 page flags: 0x1c00000000008000(tail) Modules linked in: CPU: 6 PID: 2018 Comm: bash Not tainted 3.12.0+ #25 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x55/0x76 bad_page+0xd5/0x130 free_pages_prepare+0x213/0x280 __free_pages+0x36/0x80 update_and_free_page+0xc1/0xd0 free_pool_huge_page+0xc2/0xe0 set_max_huge_pages.part.58+0x14c/0x220 nr_hugepages_store_common.isra.60+0xd0/0xf0 nr_hugepages_store+0x13/0x20 kobj_attr_store+0xf/0x20 sysfs_write_file+0x189/0x1e0 vfs_write+0xc5/0x1f0 SyS_write+0x55/0xb0 system_call_fastpath+0x16/0x1b Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Tested-by: Khalid Aziz <khalid.aziz@oracle.com> Cc: Pravin Shelar <pshelar@nicira.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Christoph Lameter <cl@linux.com> Cc: Johannes Weiner <jweiner@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-21mm: thp: give transparent hugepage code a separate copy_pageDave Hansen
Right now, the migration code in migrate_page_copy() uses copy_huge_page() for hugetlbfs and thp pages: if (PageHuge(page) || PageTransHuge(page)) copy_huge_page(newpage, page); So, yay for code reuse. But: void copy_huge_page(struct page *dst, struct page *src) { struct hstate *h = page_hstate(src); and a non-hugetlbfs page has no page_hstate(). This works 99% of the time because page_hstate() determines the hstate from the page order alone. Since the page order of a THP page matches the default hugetlbfs page order, it works. But, if you change the default huge page size on the boot command-line (say default_hugepagesz=1G), then we might not even *have* a 2MB hstate so page_hstate() returns null and copy_huge_page() oopses pretty fast since copy_huge_page() dereferences the hstate: void copy_huge_page(struct page *dst, struct page *src) { struct hstate *h = page_hstate(src); if (unlikely(pages_per_huge_page(h) > MAX_ORDER_NR_PAGES)) { ... Mel noticed that the migration code is really the only user of these functions. This moves all the copy code over to migrate.c and makes copy_huge_page() work for THP by checking for it explicitly. I believe the bug was introduced in commit b32967ff101a ("mm: numa: Add THP migration for the NUMA working set scanning fault case") [akpm@linux-foundation.org: fix coding-style and comment text, per Naoya Horiguchi] Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Tested-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-21genetlink: fix genl_set_err() group IDJohannes Berg
Fix another really stupid bug - I introduced genl_set_err() precisely to be able to adjust the group and reject invalid ones, but then forgot to do so. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-21genetlink: fix genlmsg_multicast() bugJohannes Berg
Unfortunately, I introduced a tremendously stupid bug into genlmsg_multicast() when doing all those multicast group changes: it adjusts the group number, but then passes it to genlmsg_multicast_netns() which does that again. Somehow, my tests failed to catch this, so add a warning into genlmsg_multicast_netns() and remove the offending group ID adjustment. Also add a warning to the similar code in other functions so people who misuse them are more loudly warned. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-21Merge tag 'ib-asoc-1' of git://git.linaro.org/people/ljones/mfd into ↵Mark Brown
asoc-arizona Immutable branch for ASoC, as requested by Mark Brown
2013-11-21ACPICA: Update version to 20131115.Bob Moore
Version 20131115. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-21ACPICA: Tests: Add CHECKSUM_ABORT protection for test utilities.Lv Zheng
This patch adds protection around ACPI_CHECKSUM_ABORT so that ACPI user space test utilities can re-define it for their own purposes (currently used by ASLTS build environment). This patch doesn't affect Linux kernel behavior. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-21ASoC: wm5110: Expose input high pass filter controlsCharles Keepax
Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>