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2013-08-28KVM: PPC: Book3S PR: Rework kvmppc_mmu_book3s_64_xlate()Paul Mackerras
This reworks kvmppc_mmu_book3s_64_xlate() to make it check the large page bit in the hashed page table entries (HPTEs) it looks at, and to simplify and streamline the code. The checking of the first dword of each HPTE is now done with a single mask and compare operation, and all the code dealing with the matching HPTE, if we find one, is consolidated in one place in the main line of the function flow. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-28KVM: PPC: Book3S PR: Make instruction fetch fallback work for system callsPaul Mackerras
It turns out that if we exit the guest due to a hcall instruction (sc 1), and the loading of the instruction in the guest exit path fails for any reason, the call to kvmppc_ld() in kvmppc_get_last_inst() fetches the instruction after the hcall instruction rather than the hcall itself. This in turn means that the instruction doesn't get recognized as an hcall in kvmppc_handle_exit_pr() but gets passed to the guest kernel as a sc instruction. That usually results in the guest kernel getting a return code of 38 (ENOSYS) from an hcall, which often triggers a BUG_ON() or other failure. This fixes the problem by adding a new variant of kvmppc_get_last_inst() called kvmppc_get_last_sc(), which fetches the instruction if necessary from pc - 4 rather than pc. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-28KVM: PPC: Book3S PR: Don't corrupt guest state when kernel uses VMXPaul Mackerras
Currently the code assumes that once we load up guest FP/VSX or VMX state into the CPU, it stays valid in the CPU registers until we explicitly flush it to the thread_struct. However, on POWER7, copy_page() and memcpy() can use VMX. These functions do flush the VMX state to the thread_struct before using VMX instructions, but if this happens while we have guest state in the VMX registers, and we then re-enter the guest, we don't reload the VMX state from the thread_struct, leading to guest corruption. This has been observed to cause guest processes to segfault. To fix this, we check before re-entering the guest that all of the bits corresponding to facilities owned by the guest, as expressed in vcpu->arch.guest_owned_ext, are set in current->thread.regs->msr. Any bits that have been cleared correspond to facilities that have been used by kernel code and thus flushed to the thread_struct, so for them we reload the state from the thread_struct. We also need to check current->thread.regs->msr before calling giveup_fpu() or giveup_altivec(), since if the relevant bit is clear, the state has already been flushed to the thread_struct and to flush it again would corrupt it. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-28KVM: PPC: Book3S: Fix compile error in XICS emulationPaul Mackerras
Commit 8e44ddc3f3 ("powerpc/kvm/book3s: Add support for H_IPOLL and H_XIRR_X in XICS emulation") added a call to get_tb() but didn't include the header that defines it, and on some configs this means book3s_xics.c fails to compile: arch/powerpc/kvm/book3s_xics.c: In function ‘kvmppc_xics_hcall’: arch/powerpc/kvm/book3s_xics.c:812:3: error: implicit declaration of function ‘get_tb’ [-Werror=implicit-function-declaration] Cc: stable@vger.kernel.org [v3.10, v3.11] Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-28KVM: PPC: Book3S PR: return appropriate error when allocation failsThadeu Lima de Souza Cascardo
err was overwritten by a previous function call, and checked to be 0. If the following page allocation fails, 0 is going to be returned instead of -ENOMEM. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-28arch: powerpc: kvm: add signed type cast for comparationChen Gang
'rmls' is 'unsigned long', lpcr_rmls() will return negative number when failure occurs, so it need a type cast for comparing. 'lpid' is 'unsigned long', kvmppc_alloc_lpid() return negative number when failure occurs, so it need a type cast for comparing. Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-08-22powerpc/kvm: Copy the pvr value after memsetAneesh Kumar K.V
Otherwise we would clear the pvr value Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-25KVM: PPC: Book3S PR: Load up SPRG3 register with guest value on guest entryPaul Mackerras
Unlike the other general-purpose SPRs, SPRG3 can be read by usermode code, and is used in recent kernels to store the CPU and NUMA node numbers so that they can be read by VDSO functions. Thus we need to load the guest's SPRG3 value into the real SPRG3 register when entering the guest, and restore the host's value when exiting the guest. We don't need to save the guest SPRG3 value when exiting the guest as usermode code can't modify SPRG3. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-10kvm/ppc/booke: Don't call kvm_guest_enter twiceScott Wood
kvm_guest_enter() was already called by kvmppc_prepare_to_enter(). Don't call it again. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-10kvm/ppc: Call trace_hardirqs_on before entryScott Wood
Currently this is only being done on 64-bit. Rather than just move it out of the 64-bit ifdef, move it to kvm_lazy_ee_enable() so that it is consistent with lazy ee state, and so that we don't track more host code as interrupts-enabled than necessary. Rename kvm_lazy_ee_enable() to kvm_fix_ee_before_entry() to reflect that this function now has a role on 32-bit as well. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-10KVM: PPC: Book3S HV: Allow negative offsets to real-mode hcall handlersPaul Mackerras
The table of offsets to real-mode hcall handlers in book3s_hv_rmhandlers.S can contain negative values, if some of the handlers end up before the table in the vmlinux binary. Thus we need to use a sign-extending load to read the values in the table rather than a zero-extending load. Without this, the host crashes when the guest does one of the hcalls with negative offsets, due to jumping to a bogus address. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-10KVM: PPC: Book3S HV: Correct tlbie usagePaul Mackerras
This corrects the usage of the tlbie (TLB invalidate entry) instruction in HV KVM. The tlbie instruction changed between PPC970 and POWER7. On the PPC970, the bit to select large vs. small page is in the instruction, not in the RB register value. This changes the code to use the correct form on PPC970. On POWER7 we were calculating the AVAL (Abbreviated Virtual Address, Lower) field of the RB value incorrectly for 64k pages. This fixes it. Since we now have several cases to handle for the tlbie instruction, this factors out the code to do a sequence of tlbies into a new function, do_tlbies(), and calls that from the various places where the code was doing tlbie instructions inline. It also makes kvmppc_h_bulk_remove() use the same global_invalidates() function for determining whether to do local or global TLB invalidations as is used in other places, for consistency, and also to make sure that kvm->arch.need_tlb_flush gets updated properly. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-08powerpc/kvm: Use 256K chunk to track both RMA and hash page table allocation.Aneesh Kumar K.V
Both RMA and hash page table request will be a multiple of 256K. We can use a chunk size of 256K to track the free/used 256K chunk in the bitmap. This should help to reduce the bitmap size. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-08powerpc/kvm: Contiguous memory allocator based RMA allocationAneesh Kumar K.V
Older version of power architecture use Real Mode Offset register and Real Mode Limit Selector for mapping guest Real Mode Area. The guest RMA should be physically contigous since we use the range when address translation is not enabled. This patch switch RMA allocation code to use contigous memory allocator. The patch also remove the the linear allocator which not used any more Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-08powerpc/kvm: Contiguous memory allocator based hash page table allocationAneesh Kumar K.V
Powerpc architecture uses a hash based page table mechanism for mapping virtual addresses to physical address. The architecture require this hash page table to be physically contiguous. With KVM on Powerpc currently we use early reservation mechanism for allocating guest hash page table. This implies that we need to reserve a big memory region to ensure we can create large number of guest simultaneously with KVM on Power. Another disadvantage is that the reserved memory is not available to rest of the subsystems and and that implies we limit the total available memory in the host. This patch series switch the guest hash page table allocation to use contiguous memory allocator. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-08KVM: PPC: Book3S: Ignore DABR registerAlexander Graf
We don't emulate breakpoints yet, so just ignore reads and writes to / from DABR. This fixes booting of more recent Linux guest kernels for me. Reported-by: Nello Martuscielli <ppc.addon@gmail.com> Tested-by: Nello Martuscielli <ppc.addon@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-07-08Merge remote-tracking branch 'cmadma/for-v3.12-cma-dma' into kvm-ppc-nextAlexander Graf
Add prerequisite patch for CMA RMA allocation patches
2013-07-04KVM: VMX: mark unusable segment as nonpresentGleb Natapov
Some userspaces do not preserve unusable property. Since usable segment has to be present according to VMX spec we can use present property to amend userspace bug by making unusable segment always nonpresent. vmx_segment_access_rights() already marks nonpresent segment as unusable. Cc: stable@vger.kernel.org # 3.9+ Reported-by: Stefan Pietsch <stefan.pietsch@lsexperts.de> Tested-by: Stefan Pietsch <stefan.pietsch@lsexperts.de> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-07-04arm64: KVM: Kconfig integrationMarc Zyngier
Finally plug KVM/arm64 into the config system, making it possible to enable KVM support on AArch64 CPUs. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-07-03Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Paolo Bonzini: "On the x86 side, there are some optimizations and documentation updates. The big ARM/KVM change for 3.11, support for AArch64, will come through Catalin Marinas's tree. s390 and PPC have misc cleanups and bugfixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (87 commits) KVM: PPC: Ignore PIR writes KVM: PPC: Book3S PR: Invalidate SLB entries properly KVM: PPC: Book3S PR: Allow guest to use 1TB segments KVM: PPC: Book3S PR: Don't keep scanning HPTEG after we find a match KVM: PPC: Book3S PR: Fix invalidation of SLB entry 0 on guest entry KVM: PPC: Book3S PR: Fix proto-VSID calculations KVM: PPC: Guard doorbell exception with CONFIG_PPC_DOORBELL KVM: Fix RTC interrupt coalescing tracking kvm: Add a tracepoint write_tsc_offset KVM: MMU: Inform users of mmio generation wraparound KVM: MMU: document fast invalidate all mmio sptes KVM: MMU: document fast invalidate all pages KVM: MMU: document fast page fault KVM: MMU: document mmio page fault KVM: MMU: document write_flooding_count KVM: MMU: document clear_spte_count KVM: MMU: drop kvm_mmu_zap_mmio_sptes KVM: MMU: init kvm generation close to mmio wrap-around value KVM: MMU: add tracepoint for check_mmio_spte KVM: MMU: fast invalidate all mmio sptes ...
2013-07-03Merge tag 'stable/for-linus-3.11-rc0-tag-two' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen bugfixes from Konrad Rzeszutek Wilk: - Fix memory leak when CPU hotplugging. - Compile bugs with various #ifdefs - Fix state changes in Xen PCI front not dealing well with new toolstack. - Cleanups in code (use pr_*, fix 80 characters splits, etc) - Long standing bug in double-reporting the steal time * tag 'stable/for-linus-3.11-rc0-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/time: remove blocked time accounting from xen "clockchip" xen: Convert printks to pr_<level> xen: ifdef CONFIG_HIBERNATE_CALLBACKS xen_*_suspend xen/pcifront: Deal with toolstack missing 'XenbusStateClosing' state. xen/time: Free onlined per-cpu data structure if we want to online it again. xen/time: Check that the per_cpu data structure has data before freeing. xen/time: Don't leak interrupt name when offlining. xen/time: Encapsulate the struct clock_event_device in another structure. xen/spinlock: Don't leak interrupt name when offlining. xen/smp: Don't leak interrupt name when offlining. xen/smp: Set the per-cpu IRQ number to a valid default. xen/smp: Introduce a common structure to contain the IRQ name and interrupt line. xen/smp: Coalesce the free_irq calls in one function. xen-pciback: fix error return code in pcistub_irq_handler_switch()
2013-07-03Merge tag 'edac_for_3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds
Pull AMD EDAC update from Borislav Petkov: "Add MCE signatures for family 0x15, models 30-3f" * tag 'edac_for_3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: EDAC, MCE, AMD: Add an MCE signature for new Fam15h models EDAC: Replace strict_strtoul() with kstrtoul()
2013-07-03Merge tags 'modules-next-for-linus' and 'virtio-next-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull trivial module and virtio fixes from Rusty Russell. Apparently these were meant for 3.10, but came in after the release. * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: modpost.c: Add .text.unlikely to TEXT_SECTIONS * tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: virtio: remove virtqueue_add_buf(). lguest: rename i386_head.S virtio_blk: Add missing 'static' qualifiers virtio: console: Add emergency writeonly register to config space virtio_pci: better macro exported in uapi
2013-07-03Merge tag 'regulator-v3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator updates from Mark Brown: "Very quiet release here, as well as the usual driver specific updates only a couple of new things: - New drivers for TI ABB LDOs and MAX77693 PMICs - Support for enabling bypass mode support via device tree" * tag 'regulator-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (23 commits) regulator: max77693: Remove NULL test for rmatch[i].init_data regulator: max77693: Fix trivial typo regulator: ab8500-ext: Staticize local symbols regulator: max77693: Add max77693 regualtor driver. regulator: max8973: fix a typo in documentation regulator: max8973: initial DT support regulators: max8973: fix multiple instance support regulator: of: Added a property to indicate bypass mode support regulator: ti-abb: Convert to use devm_ioremap_resource regulator: tps62360: Fix crash in i2c_driver .probe regulator: ab8500: Provide supply names for the AUX regulators regulator: ab8500-ext: Enable for Device Tree regulator: ab8500-ext: Register as a device in its own right regulator: ab8500-ext: Provide a set_voltage call-back operation regulator: ab8500: Ensure AB8500 external registers are probed first regulator: core: add regulator_get_linear_step() regulator: lp397x: use devm_kzalloc() to make cleanup paths simpler regulator: lp872x: support the device tree feature regulator: Remove unnecessary include of linux/delay.h from regulator drivers regulator: isl6271a: Use NULL instead of 0 ...
2013-07-03Merge tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linuxLinus Torvalds
Pull clock framework updates from Mike Turquette: "The common clock framework changes for 3.11 include new clock drivers across several different platforms and architectures, fixes to existing drivers, a MAINTAINERS file fix and improvements to the basic clock types that allow them to be of use to more platforms than before. Only a few fixes to the core framework are included with most all of the changes landing in the various clock drivers themselves." * tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux: (55 commits) clk: tegra: fix ifdef for tegra_periph_reset_assert inline clk: tegra: provide tegra_periph_reset_assert alternative clk: exynos4: Fix clock aliases for cpufreq related clocks clk: samsung: Add MUX_FA macro to pass flag and alias clk: add support for Rockchip gate clocks clk: vexpress: Make the clock drivers directly available for arm64 clk: vexpress: Use full node name to identify individual clocks clk: tegra: T114: add DFLL DVCO reset control clk: tegra: T114: add DFLL source clocks clk: tegra: T114: add FCPU clock shaper programming, needed by the DFLL clk: gate: add CLK_GATE_HIWORD_MASK clk: divider: add CLK_DIVIDER_HIWORD_MASK flag clk: mux: add CLK_MUX_HIWORD_MASK clk: Always notify whole subtree when reparenting MAINTAINERS: make drivers/clk entry match subdirs clk: honor CLK_GET_RATE_NOCACHE in clk_set_rate clk: use clk_get_rate() for debugfs clk: tegra: Use override bits when needed clk: tegra: override bits for Tegra30 PLLM clk: tegra: override bits for Tegra114 PLLM ...
2013-07-03Merge tag 'spi-v3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "A fairly quiet release for the SPI subsystem, the standout changes being: - Core support for implementing bits per word constraints implemented by Stephen Warren, factoring some code out of drivers. - Addition of polling mode support for the s3c64xx driver as some newer Exynos systems have taken the unusual step of removing interrupt support. - Use of the in-IP FIFO and generic dmaengine support for the OMAP2 driver, providing improved performance. - Conversion of the mpc512x driver to use the core message queue infrastructure. The nicest thing being that all the factoring out into common code leads to a negative diffstat overall." * tag 'spi-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (42 commits) spi/s3c64xx: Rely on the compiler eliminating the OF ID table spi: s3c64xx: Added support for exynos5440 spi spi: s3c64xx: Added provision for dedicated cs pin spi: omap2-mcspi: add generic DMA request support to the DT binding spi: omap2-mcspi: convert to dma_request_slave_channel_compat() spi/s3c64xx: Make wait_for_timeout() function name less generic spi: s3c64xx: added support for polling mode spi: omap2-mcspi: Add FIFO buffer support spi: omap2-mcspi: Move bytes per word calculation to the function spi: spi-xilinx: cleanup a check in xilinx_spi_txrx_bufs() spi: spi-nuc900: Remove redundant platform_set_drvdata() spi: spi-fsl-lib: Make mpc8xxx_spi_work static spi: spi-topcliff-pch: Fix sparse warnings spi: spi-xilinx: Remove redundant platform_set_drvdata() spi: spi-xilinx: Add run run-time endian detection spi: mpc512x: use the SPI subsystem's message queue spi: mpc512x: improve throughput in the RX/TX func spi: mpc512x: minor prep before feature change spi: atmel: convert to dma_request_slave_channel_compat() spi: sirf: avoid uninitialized-use warning ...
2013-07-03Merge tag 'pinctrl-for-v3.11-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control changes from Linus Walleij: - A large slew of improvements of the Genric pin configuration support, and deployment in four different platforms: Rockchip, Super-H PFC, ABx500 and TZ1090. Support BIAS_BUS_HOLD, get device tree parsing and debugfs support into shape. - We also have device tree support with generic naming conventions for the generic pin configuration. - Delete the unused and confusing direct pinconf API. Now state transitions is *the* way to control pins and multiplexing. - New drivers for Rockchip, TZ1090, and TZ1090 PDC. - Two pin control states related to power management are now handled in the device core: "sleep" and "idle", removing a lot of boilerplate code in drivers. We do not yet know if this is the final word for pin PM, but it already make things a lot easier to handle. - Handle sparse GPIO ranges passing a list of disparate pins, and utilize these in the new BayTrail (x86 Atom SoC) driver. - Make the sunxi (AllWinner) driver handle external interrupts. - Make it possible for pinctrl-single to handle the case where several pins are managed by a single register, and augment it to handle sleep modes. - Cleanups and improvements for the abx500 drivers. - Move Sirf pin control drivers to their own directory, support save/restore of context and add support for the SiRFatlas6 SoC. - PMU muxing for the Dove pinctrl driver. - Finalization and support for VF610 in the i.MX6 pinctrl driver. - Smoothen out various Exynos rough edges. - Generic cleanups of various kinds. * tag 'pinctrl-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (82 commits) pinctrl: vt8500: wmt: remove redundant dev_err call in wmt_pinctrl_probe() pinctrl: remove bindings for pinconf options needing more thought pinctrl: remove slew-rate parameter from tz1090 pinctrl: set unit for debounce time pinconfig to usec pinctrl: more clarifications for generic pull configs pinctrl: rip out the direct pinconf API pinctrl-tz1090-pdc: add TZ1090 PDC pinctrl driver pinctrl-tz1090: add TZ1090 pinctrl driver pinctrl: samsung: Staticize drvdata_list pinctrl: rockchip: Add missing irq_gc_unlock() call before return error pinctrl: abx500: rework error path pinctrl: abx500: suppress hardcoded value pinctrl: abx500: factorize code pinctrl: abx500: fix abx500_gpio_get() pinctrl: abx500: fix abx500_pin_config_set() pinctrl: abx500: Add device tree support sh-pfc: Guard DT parsing with #ifdef CONFIG_OF pinctrl: add Intel BayTrail GPIO/pinctrl support pinctrl: fix pinconf_ops::pin_config_dbg_parse_modify kerneldoc pinctrl: Staticize local symbols ... Conflicts: drivers/net/ethernet/ti/davinci_mdio.c drivers/pinctrl/Makefile
2013-07-03Merge tag 'regmap-v3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap updates from Mark Brown: "A small but useful set of regmap updates this time around: - An abstraction for bitfields within a register map contributed by Srinivas Kandagatla, allowing drivers to cope more easily when hardware designers randomly move things about (mainly when talking to things like system controllers). - Changes from Lars-Peter Clausen to allow the MMIO regmap to be used from hard IRQ context. - Small improvements to the cache infrastructure and performance, including a default cache sync operation so now all regmaps can sync easily. There's also a pinctrl driver making use of the new bitfield API, merged here for dependency reasons. There will be a simple add/add conflict with the pinctrl tree as a result." * tag 'regmap-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: pinctrl: st: Remove unnecessary use of of_match_ptr macro pinctrl: st: fix return value check pinctrl: st: Add pinctrl and pinconf support. regmap: debugfs: Suppress cache for partial register files regmap: Add regmap_field APIs regmap: core: Cache all registers by default when cache is enabled regmap: Implemented default cache sync operation regmap: Make regmap-mmio usable from atomic contexts regmap: regcache: Fixup locking for custom lock callbacks regmap: debugfs: Fix return from regmap_debugfs_get_dump_start regmap: debugfs: Don't mark lockdep as broken due to debugfs write regmap: rbtree: Use range information to allocate nodes regmap: rbtree: Factor out node allocation regmap: Make regmap_check_range_table() a public API regmap: Add support for discarding parts of the register cache
2013-07-03Merge tag 'gpio-for-v3.11-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "Here is a batch of GPIO changes for v3.11. I have agreed with Grant to take care of the pull requests for this development cycle. No special things are happening in the GPIO tree this time (nice with some calm) and I have been extra careful to do regression builds and it's well boiled in -next. GPIO changes for the v3.11 development cycle: - Incremental development for the Langwell (Atom SoC), Xilinx, ICH and RCAR drivers. - Cleanups from Jingoo Han, Axel Lin, Wei Jongjun, Wolfram Sang, Tushar Behera, Sachin Kamat and Yijing Wang" * tag 'gpio-for-v3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (35 commits) Gpio/trivial: replace numeric with standard PM state macros gpiolib: remove warnning of allocations with IRQs disabled gpio: grgpio: Staticize local symbols gpio-langwell: remove Withney point support gpio: ich: add GPO_BLINK support gpio-sta2x11: Convert to use devm_ioremap_resource gpio_msm: Convert to use devm_ioremap_resource gpio-rcar: Use OUTDT when reading GPIOs configured as output gpio-sta2x11: Fix potential NULL pointer dereference gpio/omap: omap_gpio_init_context stub must be inline gpio: msm-v1: Remove errant __devinit to fix compile gpio: devres: make comments proper GPIO: xilinx: Enable driver for Xilinx zynq DT: Add documentation for gpio-xilinx GPIO: xilinx: Use BIT macro GPIO: xilinx: Use __raw_readl/__raw_writel IO functions GPIO: xilinx: Add support for dual channel GPIO: xilinx: Simplify driver probe function gpio: sx150x: convert to use devm_* functions MAINTAINERS: add linux-gpio mailing list ...
2013-07-03Merge tag 'please-pull-mce-therm' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull thermal power-limit update from Tony Luck: "Thermal limit warnings are too scary and cause unnecessary concern" * tag 'please-pull-mce-therm' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: x86 thermal: Disable power limit notification interrupt by default x86 thermal: Delete power-limit-notification console messages
2013-07-03Merge tag 'please-pull-root_bus_hotplug' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull ia64 IOH hotplug fixes from Tony Luck: "Series to fix IOH hotplug in ia64" * tag 'please-pull-root_bus_hotplug' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: PCI: Replace printks with appropriate pr_*() PCI/IA64: introduce probe_pci_root_info() to manage _CRS resource PCI/IA64: Add host bridge resource release for _CRS path PCI/IA64: fix memleak for create pci root bus fail PCI/IA64: Allocate pci_root_info instead of using stack PCI/IA64: embed pci hostbridge resources into pci_root_info PCI/IA64: SN: use normal resource instead of pci_window PCI/IA64: SN: remove sn_pci_window_fixup()
2013-07-03Merge tag 'please-pull-pstore' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull pstore update from Tony Luck: "Fixes for pstore for 3.11 merge window" * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: efivars: If pstore_register fails, free unneeded pstore buffer acpi: Eliminate console msg if pstore.backend excludes ERST pstore: Return unique error if backend registration excluded by kernel param pstore: Fail to unlink if a driver has not defined pstore_erase pstore/ram: remove the power of buffer size limitation pstore/ram: avoid atomic accesses for ioremapped regions efi, pstore: Cocci spatch "memdup.spatch"
2013-07-03Merge tag 'please-pull-misc-3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull misc ia64 updates from Tony Luck: "Miscellaneous ia64 changes for 3.11 merge window" * tag 'please-pull-misc-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: [IA64] Delete __cpuinit usage from all ia64 users [IA64] hpsim: Fix check for overlong simscsi prefix. [IA64] pci: Remove unused fallback_dev [IA64] perfmon: Use %*phD specifier to dump small buffers [IA64] Fix trap #45 handling
2013-07-03Merge branch 'exotic-arch-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull "exotic" arch fixes from Geert Uytterhoeven: "This is a collection of several exotic architecture fixes, and a few other fixes for issues that were detected while doing the former" * 'exotic-arch-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (35 commits) lib: Move fonts from drivers/video/console/ to lib/fonts/ console/font: Refactor font support code selection logic Revert "staging/solo6x10: depend on CONFIG_FONTS" input: cros_ec_keyb_clear_keyboard() depends on CONFIG_PM_SLEEP score: Wire up asm-generic/xor.h score: Remove unneeded <asm/dma-mapping.h> openrisc: Wire up asm-generic/xor.h h8300/boot: Use POSIX "$((..))" instead of bashism "$[...]" h8300: Mark H83002 and H83048 CPU support broken h8300: Switch h8300 to drivers/Kconfig h8300: Limit timer channel ranges in Kconfig h8300: Wire up asm-generic/xor.h h8300: Fill the system call table using a CALL() macro h8300: Fix <asm/tlb.h> h8300: Hardcode symbol prefixes in asm sources h8300: add missing definition for read_barries_depends() frv: head.S - Remove commented-out initialization code cris: Wire up asm-generic/vga.h parport: disable PC-style parallel port support on cris console: Disable VGA text console support on cris ...
2013-07-03Merge branch 'for-3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k updates from Geert Uytterhoeven. * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k/q40: Enable PC parallel port in defconfig m68k/q40: Undefine insl/outsl before redefining them m68k/uaccess: Fix asm constraints for userspace access swim: Release memory region after incorrect return/goto m68k/irq: Vector ints need a valid interrupt handler m68k/math-emu: unsigned issue, 'unsigned long' will never be less than zero m68k: remove CONFIG_EARLY_PRINTK dependency on CONFIG_EMBEDDED, default to n m68k/sun3: remove inline marking of EXPORT_SYMBOL functions [SCSI] a3000: use module_platform_driver_probe() [SCSI] a4000t: use module_platform_driver_probe() m68k: Remove inline strcpy() and strcat() implementations
2013-07-03Merge tag 'arc-v3.11-rc1-part1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull first batch of ARC changes from Vineet Gupta: "There's a second bunch to follow next week - which depends on commits on other trees (irq/net). I'd have preferred the accompanying ARC change via respective trees, but it didn't workout somehow. Highlights of changes: - Continuation of ARC MM changes from 3.10 including zero page optimization Setting pagecache pages dirty by default Non executable stack by default Reducing dcache flushes for aliasing VIPT config - Long overdue rework of pt_regs machinery - removing the unused word gutters and adding ECR register to baseline (helps cleanup lot of low level code) - Support for ARC gcc 4.8 - Few other preventive fixes, cosmetics, usage of Kconfig helper.. The diffstat is larger than normal primarily because of arcregs.h header split as well as beautification of macros in entry.h" * tag 'arc-v3.11-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (32 commits) ARC: warn on improper stack unwind FDE entries arc: delete __cpuinit usage from all arc files ARC: [tlb-miss] Fix bug with CONFIG_ARC_DBG_TLB_MISS_COUNT ARC: [tlb-miss] Extraneous PTE bit testing/setting ARC: Adjustments for gcc 4.8 ARC: Setup Vector Table Base in early boot ARC: Remove explicit passing around of ECR ARC: pt_regs update #5: Use real ECR for pt_regs->event vs. synth values ARC: stop using pt_regs->orig_r8 ARC: pt_regs update #4: r25 saved/restored unconditionally ARC: K/U SP saved from one location in stack switching macro ARC: Entry Handler tweaks: Simplify branch for in-kernel preemption ARC: Entry Handler tweaks: Avoid hardcoded LIMMS for ECR values ARC: Increase readability of entry handlers ARC: pt_regs update #3: Remove unused gutter at start of callee_regs ARC: pt_regs update #2: Remove unused gutter at start of pt_regs ARC: pt_regs update #1: Align pt_regs end with end of kernel stack page ARC: pt_regs update #0: remove kernel stack canary ARC: [mm] Remove @write argument to do_page_fault() ARC: [mm] Make stack/heap Non-executable by default ...
2013-07-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "This is the bulk of the s390 patches for the 3.11 merge window. Notable enhancements are: the block timeout patches for dasd from Hannes, and more work on the PCI support front. In addition some cleanup and the usual bug fixing." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits) s390/dasd: Fail all requests when DASD_FLAG_ABORTIO is set s390/dasd: Add 'timeout' attribute block: check for timeout function in blk_rq_timed_out() block/dasd: detailed I/O errors s390/dasd: Reduce amount of messages for specific errors s390/dasd: Implement block timeout handling s390/dasd: process all requests in the device tasklet s390/dasd: make number of retries configurable s390/dasd: Clarify comment s390/hwsampler: Updated misleading member names in hws_data_entry s390/appldata_net_sum: do not use static data s390/appldata_mem: do not use static data s390/vmwatchdog: do not use static data s390/airq: simplify adapter interrupt code s390/pci: remove per device debug attribute s390/dma: remove gratuitous brackets s390/facility: decompose test_facility() s390/sclp: remove duplicated include from sclp_ctl.c s390/irq: store interrupt information in pt_regs s390/drivers: Cocci spatch "ptr_ret.spatch" ...
2013-07-03Merge tag 'arm64-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull ARM64 updates from Catalin Marinas: "Main features: - KVM and Xen ports to AArch64 - Hugetlbfs and transparent huge pages support for arm64 - Applied Micro X-Gene Kconfig entry and dts file - Cache flushing improvements For arm64 huge pages support, there are x86 changes moving part of arch/x86/mm/hugetlbpage.c into mm/hugetlb.c to be re-used by arm64" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: (66 commits) arm64: Add initial DTS for APM X-Gene Storm SOC and APM Mustang board arm64: Add defines for APM ARMv8 implementation arm64: Enable APM X-Gene SOC family in the defconfig arm64: Add Kconfig option for APM X-Gene SOC family arm64/Makefile: provide vdso_install target ARM64: mm: THP support. ARM64: mm: Raise MAX_ORDER for 64KB pages and THP. ARM64: mm: HugeTLB support. ARM64: mm: Move PTE_PROT_NONE bit. ARM64: mm: Make PAGE_NONE pages read only and no-execute. ARM64: mm: Restore memblock limit when map_mem finished. mm: thp: Correct the HPAGE_PMD_ORDER check. x86: mm: Remove general hugetlb code from x86. mm: hugetlb: Copy general hugetlb code from x86 to mm. x86: mm: Remove x86 version of huge_pmd_share. mm: hugetlb: Copy huge_pmd_share from x86 to mm. arm64: KVM: document kernel object mappings in HYP arm64: KVM: MAINTAINERS update arm64: KVM: userspace API documentation arm64: KVM: enable initialization of a 32bit vcpu ...
2013-07-03Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds
Pull ARM updates from Russell King: "This contains the usual updates from other people (listed below) and the usual random muddle of miscellaneous ARM updates which cover some low priority bug fixes and performance improvements. I've started to put the pull request wording into the merge commits, which are: - NoMMU stuff: This includes the following series sent earlier to the list: - nommu-fixes - R7 Support - MPU support I've left out the ARCH_MULTIPLATFORM/!MMU stuff that Arnd and I were discussing today until we've reached a conclusion/that's had some more review. This is rebased (and re-tested) on your devel-stable branch because otherwise there were going to be conflicts with Uwe's V7M work now that you've merged that. I've included the fix for limiting MPU to CPU_V7. - Huge page support These changes bring both HugeTLB support and Transparent HugePage (THP) support to ARM. Only long descriptors (LPAE) are supported in this series. The code has been tested on an Arndale board (Exynos 5250). - LPAE updates Please pull these miscellaneous LPAE fixes I've been collecting for a while now for 3.11. They've been tested and reviewed by quite a few people, and most of the patches are pretty trivial. -- Will Deacon. - arch_timer cleanups Please pull these arch_timer cleanups I've been holding onto for a while. They're the same as my last posting, but have been rebased to v3.10-rc3. - mpidr linearisation (multiprocessor id register - identifies which CPU number we are in the system) This patch series that implements MPIDR linearization through a simple hashing algorithm and updates current cpu_{suspend}/{resume} code to use the newly created hash structures to retrieve context pointers. It represents a stepping stone for the implementation of power management code on forthcoming multi-cluster ARM systems. It has been tested on TC2 (dual cluster A15xA7 system), iMX6q, OMAP4 and Tegra, with processors hitting low-power states requiring warm-boot resume through the cpu_resume code path" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (77 commits) ARM: 7775/1: mm: Remove do_sect_fault from LPAE code ARM: 7777/1: Avoid extra calls to the C compiler ARM: 7774/1: Fix dtb dependency to use order-only prerequisites ARM: 7770/1: remove residual ARMv2 support from decompressor ARM: 7769/1: Cortex-A15: fix erratum 798181 implementation ARM: 7768/1: prevent risks of out-of-bound access in ASID allocator ARM: 7767/1: let the ASID allocator handle suspended animation ARM: 7766/1: versatile: don't mark pen as __INIT ARM: 7765/1: perf: Record the user-mode PC in the call chain. ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and fork ARM: kernel: implement stack pointer save array through MPIDR hashing ARM: kernel: build MPIDR hash function data structure ARM: mpu: Ensure that MPU depends on CPU_V7 ARM: mpu: protect the vectors page with an MPU region ARM: mpu: Allow enabling of the MPU via kconfig ARM: 7758/1: introduce config HAS_BANDGAP ARM: 7757/1: mm: don't flush icache in switch_mm with hardware broadcasting ARM: 7751/1: zImage: don't overwrite ourself with a page table ARM: 7749/1: spinlock: retry trylock operation if strex fails on free lock ARM: 7748/1: oabi: handle faults when loading swi instruction from userspace ...
2013-07-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull second set of VFS changes from Al Viro: "Assorted f_pos race fixes, making do_splice_direct() safe to call with i_mutex on parent, O_TMPFILE support, Jeff's locks.c series, ->d_hash/->d_compare calling conventions changes from Linus, misc stuff all over the place." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) Document ->tmpfile() ext4: ->tmpfile() support vfs: export lseek_execute() to modules lseek_execute() doesn't need an inode passed to it block_dev: switch to fixed_size_llseek() cpqphp_sysfs: switch to fixed_size_llseek() tile-srom: switch to fixed_size_llseek() proc_powerpc: switch to fixed_size_llseek() ubi/cdev: switch to fixed_size_llseek() pci/proc: switch to fixed_size_llseek() isapnp: switch to fixed_size_llseek() lpfc: switch to fixed_size_llseek() locks: give the blocked_hash its own spinlock locks: add a new "lm_owner_key" lock operation locks: turn the blocked_list into a hashtable locks: convert fl_link to a hlist_node locks: avoid taking global lock if possible when waking up blocked waiters locks: protect most of the file_lock handling with i_lock locks: encapsulate the fl_link list handling locks: make "added" in __posix_lock_file a bool ...
2013-07-03Document ->tmpfile()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-07-03ext4: ->tmpfile() supportAl Viro
very similar to ext3 counterpart... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-07-03vfs: export lseek_execute() to modulesJie Liu
For those file systems(btrfs/ext4/ocfs2/tmpfs) that support SEEK_DATA/SEEK_HOLE functions, we end up handling the similar matter in lseek_execute() to update the current file offset to the desired offset if it is valid, ceph also does the simliar things at ceph_llseek(). To reduce the duplications, this patch make lseek_execute() public accessible so that we can call it directly from the underlying file systems. Thanks Dave Chinner for this suggestion. [AV: call it vfs_setpos(), don't bring the removed 'inode' argument back] v2->v1: - Add kernel-doc comments for lseek_execute() - Call lseek_execute() in ceph->llseek() Signed-off-by: Jie Liu <jeff.liu@oracle.com> Cc: Dave Chinner <dchinner@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <andi@firstfloor.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Josef Bacik <jbacik@fusionio.com> Cc: Ben Myers <bpm@sgi.com> Cc: Ted Tso <tytso@mit.edu> Cc: Hugh Dickins <hughd@google.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Sage Weil <sage@inktank.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-07-03Merge branch 'for-3.11-cpuset' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cpuset changes from Tejun Heo: "cpuset has always been rather odd about its configurations - a cgroup right after creation didn't allow any task executions before configuration, changing configuration in the parent modifies the descendants irreversibly and so on. These behaviors are inherently nasty and almost hostile against sharing the hierarchy with other controllers making it very difficult to use in unified hierarchy. Li is currently in the process of updating the behaviors for __DEVEL__sane_behavior which is the bulk of changes in this pull request. It isn't complete yet and the behaviors will change further but all changes are gated behind sane_behavior. In the process, the rather hairy work-item punting which was used to work around the limitations of cgroup descendant iterator was simplified." * 'for-3.11-cpuset' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cpuset: rename @cont to @cgrp cpuset: fix to migrate mm correctly in a corner case cpuset: allow to move tasks to empty cpusets cpuset: allow to keep tasks in empty cpusets cpuset: introduce effective_{cpumask|nodemask}_cpuset() cpuset: record old_mems_allowed in struct cpuset cpuset: remove async hotplug propagation work cpuset: let hotplug propagation work wait for task attaching cpuset: re-structure update_cpumask() a bit cpuset: remove cpuset_test_cpumask() cpuset: remove unnecessary variable in cpuset_attach() cpuset: cleanup guarantee_online_{cpus|mems}() cpuset: remove redundant check in cpuset_cpus_allowed_fallback()
2013-07-03Merge branch 'for-3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup changes from Tejun Heo: "This pull request contains the following changes. - cgroup_subsys_state (css) reference counting has been converted to percpu-ref. css is what each resource controller embeds into its own control structure and perform reference count against. It may be used in hot paths of various subsystems and is similar to module refcnt in that aspect. For example, block-cgroup's css refcnting was showing up a lot in Mikulaus's device-mapper scalability work and this should alleviate it. - cgroup subtree iterator has been updated so that RCU read lock can be released after grabbing reference. This allows simplifying its users which requires blocking which used to build iteration list under RCU read lock and then traverse it outside. This pull request contains simplification of cgroup core and device-cgroup. A separate pull request will update cpuset. - Fixes for various bugs including corner race conditions and RCU usage bugs. - A lot of cleanups and some prepartory work for the planned unified hierarchy support." * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (48 commits) cgroup: CGRP_ROOT_SUBSYS_BOUND should also be ignored when mounting an existing hierarchy cgroup: CGRP_ROOT_SUBSYS_BOUND should be ignored when comparing mount options cgroup: fix deadlock on cgroup_mutex via drop_parsed_module_refcounts() cgroup: always use RCU accessors for protected accesses cgroup: fix RCU accesses around task->cgroups cgroup: fix RCU accesses to task->cgroups cgroup: grab cgroup_mutex in drop_parsed_module_refcounts() cgroup: fix cgroupfs_root early destruction path cgroup: reserve ID 0 for dummy_root and 1 for unified hierarchy cgroup: implement for_each_[builtin_]subsys() cgroup: move init_css_set initialization inside cgroup_mutex cgroup: s/for_each_subsys()/for_each_root_subsys()/ cgroup: clean up find_css_set() and friends cgroup: remove cgroup->actual_subsys_mask cgroup: prefix global variables with "cgroup_" cgroup: convert CFTYPE_* flags to enums cgroup: rename cont to cgrp cgroup: clean up cgroup_serial_nr_cursor cgroup: convert cgroup_cft_commit() to use cgroup_for_each_descendant_pre() cgroup: make serial_nr_cursor available throughout cgroup.c ...
2013-07-03Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds
Pull workqueue changes from Tejun Heo: "Surprisingly, Lai and I didn't break too many things implementing custom pools and stuff last time around and there aren't any follow-up changes necessary at this point. The only change in this pull request is Viresh's patches to make some per-cpu workqueues to behave as unbound workqueues dependent on a boot param whose default can be configured via a config option. This leads to higher processing overhead / lower bandwidth as more work items are bounced across CPUs; however, it can lead to noticeable powersave in certain configurations - ~10% w/ idlish constant workload on a big.LITTLE configuration according to Viresh. This is because per-cpu workqueues interfere with how the scheduler perceives whether or not each CPU is idle by forcing pinned tasks on them, which makes the scheduler's power-aware scheduling decisions less effective. Its effectiveness is likely less pronounced on homogenous configurations and this type of optimization can probably be made automatic; however, the changes are pretty minimal and the affected workqueues are clearly marked, so it's an easy gain for some configurations for the time being with pretty unintrusive changes." * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: fbcon: queue work on power efficient wq block: queue work on power efficient wq PHYLIB: queue work on system_power_efficient_wq workqueue: Add system wide power_efficient workqueues workqueues: Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues
2013-07-03Merge branch 'for-3.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull per-cpu changes from Tejun Heo: "This pull request contains Kent's per-cpu reference counter. It has gone through several iterations since the last time and the dynamic allocation is gone. The usual usage is relatively straight-forward although async kill confirm interface, which is not used int most cases, is somewhat icky. There also are some interface concerns - e.g. I'm not sure about passing in @relesae callback during init as that becomes funny when we later implement synchronous kill_and_drain - but nothing too serious and it's quite useable now. cgroup_subsys_state refcnting has already been converted and we should convert module refcnt (Kent?)" * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu-refcount: use RCU-sched insted of normal RCU percpu-refcount: implement percpu_tryget() along with percpu_ref_kill_and_confirm() percpu-refcount: implement percpu_ref_cancel_init() percpu-refcount: add __must_check to percpu_ref_init() and don't use ACCESS_ONCE() in percpu_ref_kill_rcu() percpu-refcount: cosmetic updates percpu-refcount: consistently use plain (non-sched) RCU percpu-refcount: Don't use silly cmpxchg() percpu: implement generic percpu refcounting
2013-07-02Merge branch 'x86-uv-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 UV update from Ingo Molnar: "There's a single commit in this tree, which adds support for a new SGI UV GRU (Global Reference Unit - fast NUMA messaging ASIC) hardware feature to scale up and beyond: an optional distributed mode that will allow per-node address mapping of local GRU space, as opposed to mapping all GRU hardware to the same contiguous high space" * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/UV: Add GRU distributed mode mappings
2013-07-02Merge branch 'x86-tracing-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 tracing updates from Ingo Molnar: "This tree adds IRQ vector tracepoints that are named after the handler and which output the vector #, based on a zero-overhead approach that relies on changing the IDT entries, by Seiji Aguchi. The new tracepoints look like this: # perf list | grep -i irq_vector irq_vectors:local_timer_entry [Tracepoint event] irq_vectors:local_timer_exit [Tracepoint event] irq_vectors:reschedule_entry [Tracepoint event] irq_vectors:reschedule_exit [Tracepoint event] irq_vectors:spurious_apic_entry [Tracepoint event] irq_vectors:spurious_apic_exit [Tracepoint event] irq_vectors:error_apic_entry [Tracepoint event] irq_vectors:error_apic_exit [Tracepoint event] [...]" * 'x86-tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tracing: Add config option checking to the definitions of mce handlers trace,x86: Do not call local_irq_save() in load_current_idt() trace,x86: Move creation of irq tracepoints from apic.c to irq.c x86, trace: Add irq vector tracepoints x86: Rename variables for debugging x86, trace: Introduce entering/exiting_irq() tracing: Add DEFINE_EVENT_FN() macro
2013-07-02Merge branch 'x86-ras-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 RAS update from Ingo Molnar: "The changes in this tree are: - ACPI APEI (ACPI Platform Error Interface) improvements, by Chen Gong - misc MCE fixes/cleanups" * 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Update MCE severity condition check mce: acpi/apei: Add comments to clarify usage of the various bitfields in the MCA subsystem ACPI/APEI: Update einj documentation for param1/param2 ACPI/APEI: Add parameter check before error injection ACPI, APEI, EINJ: Fix error return code in einj_init() x86, mce: Fix "braodcast" typo