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2013-03-03Merge tag 'stable/for-linus-3.9-rc1-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen bug-fixes from Konrad Rzeszutek Wilk: - Update the Xen ACPI memory and CPU hotplug locking mechanism. - Fix PAT issues wherein various applications would not start - Fix handling of multiple MSI as AHCI now does it. - Fix ARM compile failures. * tag 'stable/for-linus-3.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xenbus: fix compile failure on ARM with Xen enabled xen/pci: We don't do multiple MSI's. xen/pat: Disable PAT using pat_enabled value. xen/acpi: xen cpu hotplug minor updates xen/acpi: xen memory hotplug minor updates
2013-03-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more VFS bits from Al Viro: "Unfortunately, it looks like xattr series will have to wait until the next cycle ;-/ This pile contains 9p cleanups and fixes (races in v9fs_fid_add() etc), fixup for nommu breakage in shmem.c, several cleanups and a bit more file_inode() work" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: constify path_get/path_put and fs_struct.c stuff fix nommu breakage in shmem.c cache the value of file_inode() in struct file 9p: if v9fs_fid_lookup() gets to asking server, it'd better have hashed dentry 9p: make sure ->lookup() adds fid to the right dentry 9p: untangle ->lookup() a bit 9p: double iput() in ->lookup() if d_materialise_unique() fails 9p: v9fs_fid_add() can't fail now v9fs: get rid of v9fs_dentry 9p: turn fid->dlist into hlist 9p: don't bother with private lock in ->d_fsdata; dentry->d_lock will do just fine more file_inode() open-coded instances selinux: opened file can't have NULL or negative ->f_path.dentry (In the meantime, the hlist traversal macros have changed, so this required a semantic conflict fixup for the newly hlistified fid->dlist)
2013-03-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull second set of s390 patches from Martin Schwidefsky: "The main part of this merge are Heikos uaccess patches. Together with commit 09884964335e ("mm: do not grow the stack vma just because of an overrun on preceding vma") the user string access is hopefully fixed for good. In addition some bug fixes and two cleanup patches." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/module: fix compile warning qdio: remove unused parameters s390/uaccess: fix kernel ds access for page table walk s390/uaccess: fix strncpy_from_user string length check input: disable i8042 PC Keyboard controller for s390 s390/dis: Fix invalid array size s390/uaccess: remove pointless access_ok() checks s390/uaccess: fix strncpy_from_user/strnlen_user zero maxlen case s390/uaccess: shorten strncpy_from_user/strnlen_user s390/dasd: fix unresponsive device after all channel paths were lost s390/mm: ignore change bit for vmemmap s390/page table dumper: add support for change-recording override bit
2013-03-03Merge branch 'fixes-for-3.9-latest' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull second round of PARISC updates from Helge Deller: "The most important fix in this branch is the switch of io_setup, io_getevents and io_submit syscalls to use the available compat syscalls when running 32bit userspace on 64bit kernel. Other than that it's mostly removal of compile warnings." * 'fixes-for-3.9-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: fix redefinition of SET_PERSONALITY parisc: do not install modules when installing kernel parisc: fix compile warnings triggered by atomic_sub(sizeof(),v) parisc: check return value of down_interruptible() in hp_sdc_rtc.c parisc: avoid unitialized variable warning in pa_memcpy() parisc: remove unused variable 'compat_val' parisc: switch to compat_functions of io_setup, io_getevents and io_submit parisc: select ARCH_WANT_FRAME_POINTERS
2013-03-03Merge tag 'metag-v3.9-rc1-v4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag Pull new ImgTec Meta architecture from James Hogan: "This adds core architecture support for Imagination's Meta processor cores, followed by some later miscellaneous arch/metag cleanups and fixes which I kept separate to ease review: - Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture - A few fixes all over, particularly for symbol prefixes - A few privilege protection fixes - Several cleanups (setup.c includes, split out a lot of metag_ksyms.c) - Fix some missing exports - Convert hugetlb to use vm_unmapped_area() - Copy device tree to non-init memory - Provide dma_get_sgtable()" * tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits) metag: Provide dma_get_sgtable() metag: prom.h: remove declaration of metag_dt_memblock_reserve() metag: copy devicetree to non-init memory metag: cleanup metag_ksyms.c includes metag: move mm/init.c exports out of metag_ksyms.c metag: move usercopy.c exports out of metag_ksyms.c metag: move setup.c exports out of metag_ksyms.c metag: move kick.c exports out of metag_ksyms.c metag: move traps.c exports out of metag_ksyms.c metag: move irq enable out of irqflags.h on SMP genksyms: fix metag symbol prefix on crc symbols metag: hugetlb: convert to vm_unmapped_area() metag: export clear_page and copy_page metag: export metag_code_cache_flush_all metag: protect more non-MMU memory regions metag: make TXPRIVEXT bits explicit metag: kernel/setup.c: sort includes perf: Enable building perf tools for Meta metag: add boot time LNKGET/LNKSET check metag: add __init to metag_cache_probe() ...
2013-03-03Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds
Pull late ARM updates from Russell King: "Here is the late set of ARM updates for this merge window; in here is: - The ARM parts of the broadcast timer support, core parts merged through tglx's tree. This was left over from the previous merge to allow the dependency on tglx's tree to be resolved. - A fix to the VFP code which shows up on Raspberry Pi's, as well as fixing the fallout from a previous commit in this area. - A number of smaller fixes scattered throughout the ARM tree" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: ARM: Fix broken commit 0cc41e4a21d43 corrupting kernel messages ARM: fix scheduling while atomic warning in alignment handling code ARM: VFP: fix emulation of second VFP instruction ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU ARM: 7654/1: Preserve L_PTE_VALID in pte_modify() ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock ARM: 7651/1: remove unused smp_timer_broadcast #define
2013-03-03Merge tag 'char-misc-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc patch from Greg Kroah-Hartman: "Here is one remaining patch for 3.9-rc1. It is for the hyper-v drivers, and had to wait until some other patches went in through the x86 tree." Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> * tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interrupts
2013-03-03Merge tag 'usb-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB patch revert from Greg Kroah-Hartman: "Here is one remaining USB patch for 3.9-rc1, it reverts a 3.8 patch that has caused a lot of regressions for some VIA EHCI controllers." * tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: EHCI: revert "remove ASS/PSS polling timeout"
2013-03-03Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
Pull watchdog updates from Wim Van Sebroeck: "This contains: - fixes and improvements - devicetree bindings - conversion to watchdog generic framework of the following drivers: - booke_wdt - bcm47xx_wdt.c - at91sam9_wdt - Removal of old STMP3xxx driver - Addition of following new drivers: - new driver for STMP3xxx and i.MX23/28 - Retu watchdog driver" * git://www.linux-watchdog.org/linux-watchdog: (30 commits) watchdog: sp805_wdt depends on ARM watchdog: davinci_wdt: update to devm_* API watchdog: davinci_wdt: use devm managed clk get watchdog: at91rm9200: add DT support watchdog: add timeout-sec property binding watchdog: at91sam9_wdt: Convert to use the watchdog framework watchdog: omap_wdt: Add option nowayout watchdog: core: dt: add support for the timeout-sec dt property watchdog: bcm47xx_wdt.c: add hard timer watchdog: bcm47xx_wdt.c: rename wdt_time to timeout watchdog: bcm47xx_wdt.c: rename ops methods watchdog: bcm47xx_wdt.c: use platform device watchdog: bcm47xx_wdt.c: convert to watchdog core api watchdog: Convert BookE watchdog driver to watchdog infrastructure watchdog: s3c2410_wdt: Use devm_* functions watchdog: remove old STMP3xxx driver watchdog: add new driver for STMP3xxx and i.MX23/28 rtc: stmp3xxx: add wdt-accessor function watchdog: introduce retu_wdt driver watchdog: intel_scu_watchdog: fix Kconfig dependency ...
2013-03-03Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull second set of slave-dmaengine updates from Vinod Koul: "Arnd's patch moves the dw_dmac to use generic DMA binding. I agreed to merge this late as it will avoid the conflicts between trees. The second patch from Matt adding a dma_request_slave_channel_compat API was supposed to be picked up, but somehow never got picked up. Some patches dependent on this are already in -next :(" * 'next' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: dw_dmac: move to generic DMA binding dmaengine: add dma_request_slave_channel_compat()
2013-03-03Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86Linus Torvalds
Pull x86 platform driver updates from Matthew Garrett: "Mostly relatively small updates, along with some hardware enablement for Sony hardware and a pile of updates to Google's Chromebook driver" * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (49 commits) ideapad-laptop: Depend on BACKLIGHT_CLASS_DEVICE instead of selecting it ideapad: depends on backlight subsystem and update comment Platform: x86: chromeos_laptop - add i915 gmbuses to adapter names Platform: x86: chromeos_laptop - Add isl light sensor for Pixel Platform: x86: chromeos_laptop - Add a more general add_i2c_device Platform: x86: chromeos_laptop - Add Pixel Touchscreen Platform: x86: chromeos_laptop - Add support for probing devices Platform: x86: chromeos_laptop - Add Pixel Trackpad hp-wmi: fix handling of platform device sony-laptop: leak in error handling sony_nc_lid_resume_setup() hp-wmi: Add support for SMBus hotkeys asus-wmi: Fix unused function build warning acer-wmi: avoid the warning of 'devices' may be used uninitialized drivers/platform/x86/thinkpad_acpi.c: Handle HKEY event 0x6040 Platform: x86: chromeos_laptop - Add HP Pavilion 14 Platform: x86: chromeos_laptop - Add Taos tsl2583 device Platform: x86: chromeos_laptop - Add Taos tsl2563 device Platform: x86: chromeos_laptop - Add Acer C7 trackpad Platform: x86: chromeos_laptop - Rename setup_lumpy_tp to setup_cyapa_smbus_tp asus-laptop: always report brightness key events ...
2013-03-02Merge tag 'for-linus-20130301' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD update from David Woodhouse: "Fairly unexciting MTD merge for 3.9: - misc clean-ups in the MTD command-line partitioning parser (cmdlinepart) - add flash locking support for STmicro chips serial flash chips, as well as for CFI command set 2 chips. - new driver for the ELM error correction HW module found in various TI chips, enable the OMAP NAND driver to use the ELM HW error correction - added number of new serial flash IDs - various fixes and improvements in the gpmi NAND driver - bcm47xx NAND driver improvements - make the mtdpart module actually removable" * tag 'for-linus-20130301' of git://git.infradead.org/linux-mtd: (45 commits) mtd: map: BUG() in non handled cases mtd: bcm47xxnflash: use pr_fmt for module prefix in messages mtd: davinci_nand: Use managed resources mtd: mtd_torturetest can cause stack overflows mtd: physmap_of: Convert device allocation to managed devm_kzalloc() mtd: at91: atmel_nand: for PMECC, add code to check the ONFI parameter ECC requirement. mtd: atmel_nand: make pmecc-cap, pmecc-sector-size in dts is optional. mtd: atmel_nand: avoid to report an error when lookup table offset is 0. mtd: bcm47xxsflash: adjust names of bus-specific functions mtd: bcm47xxpart: improve probing of nvram partition mtd: bcm47xxpart: add support for other erase sizes mtd: bcm47xxnflash: register this as normal driver mtd: bcm47xxnflash: fix message mtd: bcm47xxsflash: register this as normal driver mtd: bcm47xxsflash: write number of written bytes mtd: gpmi: add sanity check for the ECC mtd: gpmi: set the Golois Field bit for mx6q's BCH mtd: devices: elm: Removes <xx> literals in elm DT node mtd: gpmi: fix a dereferencing freed memory error mtd: fix the wrong timeo for panic_nand_wait() ...
2013-03-03Merge branches 'devel-stable', 'fixes' and 'mmci' into for-linusRussell King
2013-03-02metag: Internal and external irqchipsJames Hogan
Meta core internal interrupts (from HWSTATMETA and friends) are vectored onto the TR1 core trigger for the current thread. This is demultiplexed in irq-metag.c to individual Linux IRQs for each internal interrupt. External SoC interrupts (from HWSTATEXT and friends) are vectored onto the TR2 core trigger for the current thread. This is demultiplexed in irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt. The external irqchip has devicetree bindings for configuring the number of irq banks and the type of masking available. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Cc: Dom Cobley <popcornmix@gmail.com> Cc: Simon Arlott <simon@fire.lp0.eu> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-doc@vger.kernel.org
2013-03-02metag: Time keepingJames Hogan
Add time keeping code for metag. Meta hardware threads have 2 timers. The background timer (TXTIMER) is used as a free-running time base, and the interrupt timer (TXTIMERI) is used for the timer interrupt. Both counters traditionally count at approximately 1MHz. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de>
2013-03-02Merge tag 'dm-3.9-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm Pull device-mapper update from Alasdair G Kergon: "The main addition here is a long-desired target framework to allow an SSD to be used as a cache in front of a slower device. Cache tuning is delegated to interchangeable policy modules so these can be developed independently of the mechanics needed to shuffle the data around. Other than that, kcopyd users acquire a throttling parameter, ioctl buffer usage gets streamlined, more mempool reliance is reduced and there are a few other bug fixes and tidy-ups." * tag 'dm-3.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: (30 commits) dm cache: add cleaner policy dm cache: add mq policy dm: add cache target dm persistent data: add bitset dm persistent data: add transactional array dm thin: remove cells from stack dm bio prison: pass cell memory in dm persistent data: add btree_walk dm: add target num_write_bios fn dm kcopyd: introduce configurable throttling dm ioctl: allow message to return data dm ioctl: optimize functions without variable params dm ioctl: introduce ioctl_flags dm: merge io_pool and tio_pool dm: remove unused _rq_bio_info_cache dm: fix limits initialization when there are no data devices dm snapshot: add missing module aliases dm persistent data: set some btree fn parms const dm: refactor bio cloning dm: rename bio cloning functions ...
2013-03-02Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target patches from Nicholas Bellinger: "Here are the remaining target-pending patches for v3.9-rc1. The most important one here is the immediate queue starvation regression fix for iscsi-target, which addresses a bug that's effecting v3.5+ kernels under heavy sustained READ only workloads. Thanks alot to Benjamin Estrabaud for helping to track this down! Also included is a pSCSI exception bugfix from Asias, along with a handful of other minor changes. Both bugfixes are CC'ed to stable." * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target/pscsi: Rename sg_num to nr_vecs in pscsi_get_bio() target/pscsi: Fix page increment target/pscsi: Drop unnecessary NULL assignment to bio->bi_next target: Add __exit annotation for module_exit functions iscsi-target: Fix immediate queue starvation regression with DATAIN
2013-03-02Merge tag 'scsi-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This is an assorted set of stragglers into the merge window with driver updates for qla2xxx, megaraid_sas, storvsc and ufs. It also includes pulls of the uapi tree (all the remaining SCSI pieces) and the fcoe tree (updates to fcoe and libfc)" * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (81 commits) [SCSI] ufs: Separate PCI code into glue driver [SCSI] ufs: Segregate PCI Specific Code [SCSI] scsi: fix lpfc build when wmb() is defined as mb() [SCSI] storvsc: Handle dynamic resizing of the device [SCSI] storvsc: Restructure error handling code on command completion [SCSI] storvsc: avoid usage of WRITE_SAME [SCSI] aacraid: suppress two GCC warnings [SCSI] hpsa: check for dma_mapping_error in hpsa_passthru ioctls [SCSI] hpsa: reorganize error handling in hpsa_passthru_ioctl [SCSI] hpsa: check for dma_mapping_error in hpsa_map_sg_chain_block [SCSI] hpsa: Check for dma_mapping_error for all code paths using fill_cmd [SCSI] hpsa: Check for dma_mapping_error in hpsa_map_one [SCSI] dc395x: uninitialized variable in device_alloc() [SCSI] Fix range check in scsi_host_dif_capable() [SCSI] storvsc: Initialize the sglist [SCSI] mpt2sas: Add support for OEM specific controller [SCSI] ipr: Fix oops while resetting an ipr adapter [SCSI] fnic: Fnic Trace Utility [SCSI] fnic: New debug flags and debug log messages [SCSI] fnic: fnic driver may hit BUG_ON on device reset ...
2013-03-02parisc: check return value of down_interruptible() in hp_sdc_rtc.cHelge Deller
additionally comment out unused code (which may be used later) Signed-off-by: Helge Deller <deller@gmx.de>
2013-03-02x86, ACPI, mm: Revert movablemem_map supportYinghai Lu
Tim found: WARNING: at arch/x86/kernel/smpboot.c:324 topology_sane.isra.2+0x6f/0x80() Hardware name: S2600CP sched: CPU #1's llc-sibling CPU #0 is not on the same node! [node: 1 != 0]. Ignoring dependency. smpboot: Booting Node 1, Processors #1 Modules linked in: Pid: 0, comm: swapper/1 Not tainted 3.9.0-0-generic #1 Call Trace: set_cpu_sibling_map+0x279/0x449 start_secondary+0x11d/0x1e5 Don Morris reproduced on a HP z620 workstation, and bisected it to commit e8d195525809 ("acpi, memory-hotplug: parse SRAT before memblock is ready") It turns out movable_map has some problems, and it breaks several things 1. numa_init is called several times, NOT just for srat. so those nodes_clear(numa_nodes_parsed) memset(&numa_meminfo, 0, sizeof(numa_meminfo)) can not be just removed. Need to consider sequence is: numaq, srat, amd, dummy. and make fall back path working. 2. simply split acpi_numa_init to early_parse_srat. a. that early_parse_srat is NOT called for ia64, so you break ia64. b. for (i = 0; i < MAX_LOCAL_APIC; i++) set_apicid_to_node(i, NUMA_NO_NODE) still left in numa_init. So it will just clear result from early_parse_srat. it should be moved before that.... c. it breaks ACPI_TABLE_OVERIDE...as the acpi table scan is moved early before override from INITRD is settled. 3. that patch TITLE is total misleading, there is NO x86 in the title, but it changes critical x86 code. It caused x86 guys did not pay attention to find the problem early. Those patches really should be routed via tip/x86/mm. 4. after that commit, following range can not use movable ram: a. real_mode code.... well..funny, legacy Node0 [0,1M) could be hot-removed? b. initrd... it will be freed after booting, so it could be on movable... c. crashkernel for kdump...: looks like we can not put kdump kernel above 4G anymore. d. init_mem_mapping: can not put page table high anymore. e. initmem_init: vmemmap can not be high local node anymore. That is not good. If node is hotplugable, the mem related range like page table and vmemmap could be on the that node without problem and should be on that node. We have workaround patch that could fix some problems, but some can not be fixed. So just remove that offending commit and related ones including: f7210e6c4ac7 ("mm/memblock.c: use CONFIG_HAVE_MEMBLOCK_NODE_MAP to protect movablecore_map in memblock_overlaps_region().") 01a178a94e8e ("acpi, memory-hotplug: support getting hotplug info from SRAT") 27168d38fa20 ("acpi, memory-hotplug: extend movablemem_map ranges to the end of node") e8d195525809 ("acpi, memory-hotplug: parse SRAT before memblock is ready") fb06bc8e5f42 ("page_alloc: bootmem limit with movablecore_map") 42f47e27e761 ("page_alloc: make movablemem_map have higher priority") 6981ec31146c ("page_alloc: introduce zone_movable_limit[] to keep movable limit for nodes") 34b71f1e04fc ("page_alloc: add movable_memmap kernel parameter") 4d59a75125d5 ("x86: get pg_data_t's memory from other node") Later we should have patches that will make sure kernel put page table and vmemmap on local node ram instead of push them down to node0. Also need to find way to put other kernel used ram to local node ram. Reported-by: Tim Gardner <tim.gardner@canonical.com> Reported-by: Don Morris <don.morris@hp.com> Bisected-by: Don Morris <don.morris@hp.com> Tested-by: Don Morris <don.morris@hp.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Tejun Heo <tj@kernel.org> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-02Merge tag 'for_linux-3.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb Pull KGDB/KDB fixes and cleanups from Jason Wessel: "For a change we removed more code than we added. If people aren't using it we shouldn't be carrying it. :-) Cleanups: - Remove kdb ssb command - there is no in kernel disassembler to support it - Remove kdb ll command - Always caused a kernel oops and there were no bug reports so no one was using this command - Use kernel ARRAY_SIZE macro instead of array computations Fixes: - Stop oops in kdb if user executes kdb_defcmd with args - kdb help command truncated text - ppc64 support for kgdbts - Add missing kconfig option from original kdb port for dealing with catastrophic kernel crashes such that you can reboot automatically on continue from kdb" * tag 'for_linux-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb: kdb: Remove unhandled ssb command kdb: Prevent kernel oops with kdb_defcmd kdb: Remove the ll command kdb_main: fix help print kdb: Fix overlap in buffers with strcpy Fixed dead ifdef block by adding missing Kconfig option. kdb: Setup basic kdb state before invoking commands via kgdb kdb: use ARRAY_SIZE where possible kgdb/kgdbts: support ppc64 kdb: A fix for kdb command table expansion
2013-03-02Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: o Add basic support for the Mediatek/Ralink Wireless SoC family. o The Qualcomm Atheros platform is extended by support for the new QCA955X SoC series as well as a bunch of patches that get the code ready for OF support. o Lantiq and BCM47XX platform have a few improvements and bug fixes. o MIPS has sent a few patches that get the kernel ready for the upcoming microMIPS support. o The rest of the series is made up of small bug fixes and cleanups that relate to various parts of the MIPS code. The biggy in there is a whitespace cleanup. After I was sent another set of whitespace cleanup patches I decided it was the time to clean the whitespace "issues" for once and and that touches many files below arch/mips/. Fix up silly conflicts, mostly due to whitespace cleanups. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits) MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h MIPS: remove broken conditional inside vpe loader code MIPS: SMTC: fix implicit declaration of set_vi_handler MIPS: early_printk: drop __init annotations MIPS: Probe for and report hardware virtualization support. MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board MIPS: ath79: add USB controller registration code for the QCA955X SoCs MIPS: ath79: add PCI controller registration code for the QCA955X SoCs MIPS: ath79: add WMAC registration code for the QCA955X SoCs MIPS: ath79: register UART for the QCA955X SoCs MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear} MIPS: ath79: add GPIO setup code for the QCA955X SoCs MIPS: ath79: add IRQ handling code for the QCA955X SoCs MIPS: ath79: add clock setup code for the QCA955X SoCs MIPS: ath79: add SoC detection code for the QCA955X SoCs MIPS: ath79: add early printk support for the QCA955X SoCs MIPS: ath79: fix WMAC IRQ resource assignment mips: reserve elfcorehdr mips: Make sure kernel memory is in iomem MIPS: ath79: use dynamically allocated USB platform devices ...
2013-03-02kgdb/kgdbts: support ppc64Tiejun Chen
We can't look up the address of the entry point of the function simply via that function symbol for all architectures. For PPC64 ABI, actually there is a function descriptors structure. A function descriptor is a three doubleword data structure that contains the following values: * The first doubleword contains the address of the entry point of the function. * The second doubleword contains the TOC base address for the function. * The third doubleword contains the environment pointer for languages such as Pascal and PL/1. So we should call a wapperred dereference_function_descriptor() to get the address of the entry point of the function. Note this is also safe for other architecture after refer to "include/asm-generic/sections.h" since: dereference_function_descriptor(p) always is (p) if without arched definition. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2013-03-01dm cache: add cleaner policyHeinz Mauelshagen
A simple cache policy that writes back all data to the origin. This is used to decommission a dm cache by emptying it. Signed-off-by: Heinz Mauelshagen <mauelshagen@redhat.com> Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm cache: add mq policyJoe Thornber
A cache policy that uses a multiqueue ordered by recent hit count to select which blocks should be promoted and demoted. This is meant to be a general purpose policy. It prioritises reads over writes. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: add cache targetJoe Thornber
Add a target that allows a fast device such as an SSD to be used as a cache for a slower device such as a disk. A plug-in architecture was chosen so that the decisions about which data to migrate and when are delegated to interchangeable tunable policy modules. The first general purpose module we have developed, called "mq" (multiqueue), follows in the next patch. Other modules are under development. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Heinz Mauelshagen <mauelshagen@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm persistent data: add bitsetJoe Thornber
Add a persistent bitset as a wrapper around dm-array. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm persistent data: add transactional arrayJoe Thornber
Add a transactional array. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm thin: remove cells from stackJoe Thornber
This patch takes advantage of the new bio-prison interface where the memory is now passed in rather than using a mempool in bio-prison. This allows the map function to avoid performing potentially-blocking allocations that could lead to deadlocks: We want to avoid the cell allocation that is done in bio_detain. (The potential for mempool deadlocks still remains in other functions that use bio_detain.) Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm bio prison: pass cell memory inJoe Thornber
Change the dm_bio_prison interface so that instead of allocating memory internally, dm_bio_detain is supplied with a pre-allocated cell each time it is called. This enables a subsequent patch to move the allocation of the struct dm_bio_prison_cell outside the thin target's mapping function so it can no longer block there. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm persistent data: add btree_walkJoe Thornber
Add dm_btree_walk to iterate through the contents of a btree. This will be used by the dm cache target. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: add target num_write_bios fnAlasdair G Kergon
Add a num_write_bios function to struct target. If an instance of a target sets this, it will be queried before the target's mapping function is called on a write bio, and the response controls the number of copies of the write bio that the target will receive. This provides a convenient way for a target to send the same data to more than one device. The new cache target uses this in writethrough mode, to send the data both to the cache and the backing device. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm kcopyd: introduce configurable throttlingMikulas Patocka
This patch allows the administrator to reduce the rate at which kcopyd issues I/O. Each module that uses kcopyd acquires a throttle parameter that can be set in /sys/module/*/parameters. We maintain a history of kcopyd usage by each module in the variables io_period and total_period in struct dm_kcopyd_throttle. The actual kcopyd activity is calculated as a percentage of time equal to "(100 * io_period / total_period)". This is compared with the user-defined throttle percentage threshold and if it is exceeded, we sleep. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm ioctl: allow message to return dataMikulas Patocka
This patch introduces enhanced message support that allows the device-mapper core to recognise messages that are common to all devices, and for messages to return data to userspace. Core messages are processed by the function "message_for_md". If the device mapper doesn't support the message, it is passed to the target driver. If the message returns data, the kernel sets the flag DM_MESSAGE_OUT_FLAG. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm ioctl: optimize functions without variable paramsMikulas Patocka
Device-mapper ioctls receive and send data in a buffer supplied by userspace. The buffer has two parts. The first part contains a 'struct dm_ioctl' and has a fixed size. The second part depends on the ioctl and has a variable size. This patch recognises the specific ioctls that do not use the variable part of the buffer and skips allocating memory for it. In particular, when a device is suspended and a resume ioctl is sent, this now avoid memory allocation completely. The variable "struct dm_ioctl tmp" is moved from the function copy_params to its caller ctl_ioctl and renamed to param_kernel. It is used directly when the ioctl function doesn't need any arguments. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm ioctl: introduce ioctl_flagsMikulas Patocka
This patch introduces flags for each ioctl function. So far, one flag is defined, IOCTL_FLAGS_NO_PARAMS. It is set if the function processing the ioctl doesn't take or produce any parameters in the section of the data buffer that has a variable size. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: merge io_pool and tio_poolJun'ichi Nomura
This patch merges io_pool and tio_pool into io_pool and cleans up related functions. Though device-mapper used to have 2 pools of objects for each dm device, the use of bioset frontbad for per-bio data has shrunk the number of pools to 1 for both bio-based and request-based device types. (See c0820cf5 "dm: introduce per_bio_data" and 94818742 "dm: Use bioset's front_pad for dm_rq_clone_bio_info") So dm no longer has to maintain 2 different pointers. No functional changes. Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: remove unused _rq_bio_info_cacheJun'ichi Nomura
Remove _rq_bio_info_cache, which is no longer used. No functional changes. Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: fix limits initialization when there are no data devicesMike Christie
dm_calculate_queue_limits will first reset the provided limits to defaults using blk_set_stacking_limits; whereby defeating the purpose of retaining the original live table's limits -- as was intended via commit 3ae706561637331aa578e52bb89ecbba5edcb7a9 ("dm: retain table limits when swapping to new table with no devices"). Fix this improper limits initialization (in the no data devices case) by avoiding the call to dm_calculate_queue_limits. [patch header revised by Mike Snitzer] Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org # v3.6+ Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm snapshot: add missing module aliasesMikulas Patocka
Add module aliases so that autoloading works correctly if the user tries to activate "snapshot-origin" or "snapshot-merge" targets. Reference: https://bugzilla.redhat.com/889973 Reported-by: Chao Yang <chyang@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm persistent data: set some btree fn parms constMike Snitzer
Mark some constant parameters constant in some dm-btree functions. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: refactor bio cloningAlasdair G Kergon
Refactor part of the bio splitting and cloning code to try to make it easier to understand. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: rename bio cloning functionsAlasdair G Kergon
Rename functions involved in splitting and cloning bios. The sequence of functions is now: (1) __split_and_process* - entry point that selects the processing strategy (2) __send* - prepare the details for each bio needed and loop through them (3) __clone_and_map* - creates a clone and maps it Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: rename request variables to biosAlasdair G Kergon
Use 'bio' in the name of variables and functions that deal with bios rather than 'request' to avoid confusion with the normal block layer use of 'request'. No functional changes. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: clean up clone_bioAlasdair G Kergon
Remove the no-longer-used struct bio_set argument from clone_bio and split_bvec. Use tio->ti in __map_bio() instead of passing in ti. Factor out some code for setting up cloned bios. Take target_request_nr as a parameter to alloc_tio(). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm persistent data: remove CONFIG_EXPERIMENTALKees Cook
The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm: remove CONFIG_EXPERIMENTALAlasdair G Kergon
Remove EXPERIMENTAL from all existing device-mapper targets. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm thin: use block_size_is_power_of_twoMike Snitzer
Use block_size_is_power_of_two() rather than checking sectors_per_block_shift directly. Also introduce local pool variable in get_bio_block() to eliminate redundant tc->pool dereferences. No functional change. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm bufio: use WRITE_FLUSH instead of REQ_FLUSHMikulas Patocka
Use WRITE_FLUSH instead of REQ_FLUSH for submitted requests to make it consistent with the rest of the kernel. There is no functional change. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-03-01dm table: remove superfluous variable resetWang Sheng-Hui
If allocation fails, the local var *t is not used any more after kfree. Don't need to reset it to NULL. Remove the unnecesary NULL set here. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>