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2012-08-15tile: Remove SD_PREFER_LOCAL leftoverAlex Shi1-1/+0
commit (sched: recover SD_WAKE_AFFINE in select_task_rq_fair and code clean up) removed SD_PREFER_LOCAL, but left a SD_PREFER_LOCAL usage in arch/tile code. That breaks the arch/tile build. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alex Shi <alex.shi@intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/502AF3E6.3050709@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-07-31memcg: rename config variablesAndrew Morton2-4/+4
Sanity: CONFIG_CGROUP_MEM_RES_CTLR -> CONFIG_MEMCG CONFIG_CGROUP_MEM_RES_CTLR_SWAP -> CONFIG_MEMCG_SWAP CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED -> CONFIG_MEMCG_SWAP_ENABLED CONFIG_CGROUP_MEM_RES_CTLR_KMEM -> CONFIG_MEMCG_KMEM [mhocko@suse.cz: fix missed bits] Cc: Glauber Costa <glommer@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30Merge branch 'trivial' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull treewide kbuild cleanup from Michal Marek: "Paul Bolle did a cleanup of <asm/*.h> headers in various architectures. Because the patch touch several architectures at once, it was easiest for me to apply them to the kbuild tree." * 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: Remove useless wrappers of asm-generic/rmap.h Remove useless wrappers of asm-generic/ipc.h Remove useless wrappers of asm-generic/cpumask.h
2012-07-27Merge branch 'kmap_atomic' of git://github.com/congwang/linuxLinus Torvalds2-31/+2
Pull final kmap_atomic cleanups from Cong Wang: "This should be the final round of cleanup, as the definitions of enum km_type finally get removed from the whole tree. The patches have been in linux-next for a long time." * 'kmap_atomic' of git://github.com/congwang/linux: pipe: remove KM_USER0 from comments vmalloc: remove KM_USER0 from comments feature-removal-schedule.txt: remove kmap_atomic(page, km_type) tile: remove km_type definitions um: remove km_type definitions asm-generic: remove km_type definitions avr32: remove km_type definitions frv: remove km_type definitions powerpc: remove km_type definitions arm: remove km_type definitions highmem: remove the deprecated form of kmap_atomic tile: remove usage of enum km_type frv: remove the second parameter of kmap_atomic_primary() jbd2: remove the second argument of kmap_atomic
2012-07-25tilepro pci: fix pci_bus.subordinate bad bombing from b918c62eChris Metcalf1-1/+1
The bombing to convert pci_bus.subordinate to busn_res.end accidentally modified a "struct pci_dev" site, causing this file not to compile. This commit reverts that code to use dev->subordinate again. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-25tilegx pci: fix semantic merge conflict with 3527ed81cChris Metcalf1-1/+1
Yinghai Lu removed pci_bus.subordinate in pci-next, which meant that the tile-next changes to add tilegx PCI support don't build. This was expected (seen in linux-next) and this one-line fix is along the same lines as commit b918c62e for all other architectures. Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-24Merge tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds1-13/+6
Pull PCI changes from Bjorn Helgaas: "Host bridge hotplug: - Add MMCONFIG support for hot-added host bridges (Jiang Liu) Device hotplug: - Move fixups from __init to __devinit (Sebastian Andrzej Siewior) - Call FINAL fixups for hot-added devices, too (Myron Stowe) - Factor out generic code for P2P bridge hot-add (Yinghai Lu) - Remove all functions in a slot, not just those with _EJx (Amos Kong) Dynamic resource management: - Track bus number allocation (struct resource tree per domain) (Yinghai Lu) - Make P2P bridge 1K I/O windows work with resource reassignment (Bjorn Helgaas, Yinghai Lu) - Disable decoding while updating 64-bit BARs (Bjorn Helgaas) Power management: - Add PCIe runtime D3cold support (Huang Ying) Virtualization: - Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex Williamson) - Add quirks for devices with broken INTx masking (Jan Kiszka) Miscellaneous: - Fix some PCI Express capability version issues (Myron Stowe) - Factor out some arch code with a weak, generic, pcibios_setup() (Myron Stowe)" * tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (122 commits) PCI: hotplug: ensure a consistent return value in error case PCI: fix undefined reference to 'pci_fixup_final_inited' PCI: build resource code for M68K architecture PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width() PCI: reorder __pci_assign_resource() (no change) PCI: fix truncation of resource size to 32 bits PCI: acpiphp: merge acpiphp_debug and debug PCI: acpiphp: remove unused res_lock sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases() PCI: call final fixups hot-added devices PCI: move final fixups from __init to __devinit x86/PCI: move final fixups from __init to __devinit MIPS/PCI: move final fixups from __init to __devinit PCI: support sizing P2P bridge I/O windows with 1K granularity PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2) PCI: disable MEM decoding while updating 64-bit MEM BARs PCI: leave MEM and IO decoding disabled during 64-bit BAR sizing, too PCI: never discard enable/suspend/resume_early/resume fixups PCI: release temporary reference in __nv_msi_ht_cap_quirk() PCI: restructure 'pci_do_fixups()' ...
2012-07-24tile: remove km_type definitionsCong Wang1-30/+1
Signed-off-by: Cong Wang <amwang@redhat.com>
2012-07-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds65-400/+10771
Pull arch/tile updates from Chris Metcalf: "These changes provide support for PCIe root complex and USB host mode for tilegx's on-chip I/Os. In addition, this pull provides the required underpinning for the on-chip networking support that was pulled into 3.5. The changes have all been through LKML (with several rounds for PCIe RC) and on linux-next." * git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile: updates to pci root complex from community feedback bounce: allow use of bounce pool via config option usb: add host support for the tilegx architecture arch/tile: provide kernel support for the tilegx USB shim tile pci: enable IOMMU to support DMA for legacy devices arch/tile: enable ZONE_DMA for tilegx tilegx pci: support I/O to arbitrarily-cached pages tile: remove unused header arch/tile: tilegx PCI root complex support arch/tile: provide kernel support for the tilegx TRIO shim arch/tile: break out the "csum a long" function to <asm/checksum.h> arch/tile: provide kernel support for the tilegx mPIPE shim arch/tile: common DMA code for the GXIO IORPC subsystem arch/tile: support MMIO-based readb/writeb etc. arch/tile: introduce GXIO IORPC framework for tilegx
2012-07-23tile: remove usage of enum km_typeCong Wang1-1/+1
Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Cong Wang <amwang@redhat.com>
2012-07-22Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds1-10/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull smp/hotplug changes from Ingo Molnar: "Various cleanups to the SMP hotplug code - a continuing effort of Thomas et al" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smpboot: Remove leftover declaration smp: Remove num_booting_cpus() smp: Remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]() POWERPC: Smp: remove call to ipi_call_lock()/ipi_call_unlock() SPARC: SMP: Remove call to ipi_call_lock_irq()/ipi_call_unlock_irq() ia64: SMP: Remove call to ipi_call_lock_irq()/ipi_call_unlock_irq() x86-smp-remove-call-to-ipi_call_lock-ipi_call_unlock tile: SMP: Remove call to ipi_call_lock()/ipi_call_unlock() S390: Smp: remove call to ipi_call_lock()/ipi_call_unlock() parisc: Smp: remove call to ipi_call_lock()/ipi_call_unlock() mn10300: SMP: Remove call to ipi_call_lock()/ipi_call_unlock() hexagon: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()
2012-07-18tile: updates to pci root complex from community feedbackChris Metcalf3-64/+47
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18bounce: allow use of bounce pool via config optionChris Metcalf1-0/+6
The tilegx USB OHCI support needs the bounce pool since we're not using the IOMMU to handle 32-bit addresses. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18usb: add host support for the tilegx architectureChris Metcalf3-0/+80
This change adds OHCI and EHCI support for the tilegx's on-chip USB hardware. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18arch/tile: provide kernel support for the tilegx USB shimChris Metcalf9-0/+413
This change adds support for accessing the USB shim from within the kernel. Note that this change by itself does not allow the kernel to act as a host or as a device; it merely exposes the built-in on-chip hardware to the kernel. The <arch/usb_host.h> and <arch/usb_host_def.h> headers are empty at the moment because the kernel does not require any types or definitions specific to the tilegx USB shim; the generic USB core code is all we need. The headers are left in as stubs so that we don't need to modify the hypervisor header (drv_usb_host_intf.h) from upstream. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18tile pci: enable IOMMU to support DMA for legacy devicesChris Metcalf8-203/+588
This change uses the TRIO IOMMU to map the PCI DMA space and physical memory at different addresses. We also now use the dma_mapping_ops to provide support for non-PCI DMA, PCIe DMA (64-bit) and legacy PCI DMA (32-bit). We use the kernel's software I/O TLB framework (i.e. bounce buffers) for the legacy 32-bit PCI device support since there are a limited number of TLB entries in the IOMMU and it is non-trivial to handle indexing, searching, matching, etc. For 32-bit devices the performance impact of bounce buffers should not be a concern. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18arch/tile: enable ZONE_DMA for tilegxChris Metcalf4-13/+28
This is required for PCI root complex legacy support and USB OHCI root complex support. With this change tilegx now supports allocating memory whose PA fits in 32 bits. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18tilegx pci: support I/O to arbitrarily-cached pagesChris Metcalf7-171/+278
The tilegx PCI root complex support (currently only in linux-next) is limited to pages that are homed on cached in the default manner, i.e. "hash-for-home". This change supports delivery of I/O data to pages that are cached in other ways (locally on a particular core, uncached, user-managed incoherent, etc.). A large part of the change is supporting flushing pages from cache on particular homes so that we can transition the data that we are delivering to or from the device appropriately. The new homecache_finv* routines handle this. Some changes to page_table_range_init() were also required to make the fixmap code work correctly on tilegx; it hadn't been used there before. We also remove some stub mark_caches_evicted_*() routines that were just no-ops anyway. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18tile: remove unused headerPaul Bolle1-33/+0
Nothing includes memprof.h. Nothing uses the macros it defines. It seems it is just a remnant of the proposed memprof functionality, which got dropped before the Tilera architecture got added to the tree. This header can safely be removed. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-18arch/tile: tilegx PCI root complex supportChris Metcalf6-17/+1645
This change implements PCIe root complex support for tilegx using the kernel support layer for accessing the TRIO hardware shim. Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> [changes in 07487f3] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: provide kernel support for the tilegx TRIO shimChris Metcalf16-0/+1707
Provide kernel support for the tilegx "Transaction I/O" (TRIO) on-chip hardware. This hardware implements the PCIe interface for tilegx; the driver changes to use TRIO for PCIe are in a subsequent commit. The change is layered on top of the tilegx GXIO IORPC subsystem. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: break out the "csum a long" function to <asm/checksum.h>Chris Metcalf2-14/+19
This makes it available to the tilegx network driver. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: provide kernel support for the tilegx mPIPE shimChris Metcalf14-0/+4658
The TILE-Gx chip includes a packet-processing network engine called mPIPE ("Multicore Programmable Intelligent Packet Engine"). This change adds support for using the mPIPE engine from within the kernel. The engine has more functionality than is exposed here, but to keep the kernel code and binary simpler, this is a subset of the full API designed to enable standard Linux networking only. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: common DMA code for the GXIO IORPC subsystemChris Metcalf4-0/+344
The dma_queue support is used by both the mPipe (networking) and Trio (PCI) hardware shims on tilegx. This common code is selected when either of those drivers is built. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: support MMIO-based readb/writeb etc.Chris Metcalf1-28/+116
Add support for MMIO read/write on tilegx to support GXIO IORPC access. Similar to the asm-generic version, but we include memory fences on the writes to be conservative. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-11arch/tile: introduce GXIO IORPC framework for tilegxChris Metcalf10-0/+985
The GXIO I/O RPC subsystem handles exporting I/O hardware resources to Linux and to applications running under Linux. For instance, memory which is made available for I/O DMA must be mapped by an I/O TLB; that means that such memory must be locked down by Linux, so that it is not swapped or otherwise reused, as long as those I/O TLB entries are active. Similarly, configuring direct hardware access introduces new validation requirements. If a user application registers memory, Linux must ensure that the supplied virtual addresses are valid, and turn them into client physical addresses. Similarly, when Linux then supplies those client physical addresses to the Tilera hypervisor, it must in turn validate those before turning them into the real physical addresses which are required by the hardware. To the extent that these sorts of activities were required on previous TILE architecture processors, they were implemented in a device-specific fashion. This meant that every I/O device had its own Tilera hypervisor driver, its own Linux driver, and in some cases its own user-level library support. There was a large amount of more-or-less functionally identical code in different places, particularly in the different Linux drivers. For TILE-Gx, this support has been generalized into a common framework, known as the I/O RPC framework or just IORPC. The two "gxio" directories (one for headers, one for sources) start with just a few files in each with this infrastructure commit, but after adding support for the on-board I/O shims for networking, PCI, USB, crypto, compression, I2CS, etc., there end up being about 20 files in each directory. More information on the IORPC framework is in the <hv/iorpc.h> header, included in this commit. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-07-05Merge branch 'pci/myron-pcibios_setup' into nextBjorn Helgaas1-10/+0
* pci/myron-pcibios_setup: xtensa/PCI: factor out pcibios_setup() x86/PCI: adjust section annotations for pcibios_setup() unicore32/PCI: adjust section annotations for pcibios_setup() tile/PCI: factor out pcibios_setup() sparc/PCI: factor out pcibios_setup() sh/PCI: adjust section annotations for pcibios_setup() sh/PCI: factor out pcibios_setup() powerpc/PCI: factor out pcibios_setup() parisc/PCI: factor out pcibios_setup() MIPS/PCI: adjust section annotations for pcibios_setup() MIPS/PCI: factor out pcibios_setup() microblaze/PCI: factor out pcibios_setup() ia64/PCI: factor out pcibios_setup() cris/PCI: factor out pcibios_setup() alpha/PCI: factor out pcibios_setup() PCI: pull pcibios_setup() up into core
2012-07-05tile/PCI: factor out pcibios_setup()Myron Stowe1-10/+0
The PCI core provides a generic pcibios_setup() routine. Drop this architecture-specific version in favor of that. Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Myron Stowe <myron.stowe@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-28Remove useless wrappers of asm-generic/ipc.hPaul Bolle1-1/+0
mn10300 has a header (in its include/asm directory) that is a thin wrapper around asm-generic/ipc.h. This wrapper is useless, since that header doesn't exist. It is also unused (no file includes asm/ipc.h). hexagon and tile generate similar headers at build time (using a generic-y entry in include/asm/Kbuild). These generated headers are useless and unused too. Remove this header and these generic-y entries. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Richard Kuo <rkuo@codeaurora.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: David Howells <dhowells@redhat.com> [MN10300] Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-06-18arch/tile: big-endian: properly bswap instruction bundles when backtracingChris Metcalf1-2/+7
Instruction bundles are always little-endian, even when running in big-endian mode. I missed this internal bug fix when cherry-picking the big-endian code to return to the community. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-06-16tile: fix bug in get_user() for 4-byte valuesChris Metcalf1-1/+1
The definition of 32-bit values in the 64-bit tilegx architecture is that they should be sign-extended regardless of whether they are considered signed or unsigned by the compiler. Accordingly, we need to use an "ld4s" rather than "ld4u" to load and sign-extend for get_user(). This fixes glibc bug 14238 (see http://sourceware.org/bugzilla), introduced during the 3.5 merge window. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-06-13tile/PCI: use pci_scan_root_bus instead pci_scan_busYinghai Lu1-1/+4
It will update busn_res accordingly, so we get that for last_busno. Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-13PCI: replace struct pci_bus secondary/subordinate with busn_resYinghai Lu1-2/+2
Replace the struct pci_bus secondary/subordinate members with the struct resource busn_res. Later we'll build a resource tree of these bus numbers. [bhelgaas: changelog] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-06tile: add #include to unbreak build after generic init_task conversionChris Metcalf1-0/+1
Some code was moved from init_task.c to setup.c but the appropriate header needed to be moved as well. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-06-06tile: remove cpu_idle_on_new_stackChris Metcalf2-19/+0
This routine isn't used unless CONFIG_HOMECACHE is enabled, which isn't even available as a public configuration option yet. Since it no longer links correctly in 3.4, just remove it for now. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-06-05tile: SMP: Remove call to ipi_call_lock()/ipi_call_unlock()Yong Zhang1-10/+0
ipi_call_lock/unlock() lock resp. unlock call_function.lock. This lock protects only the call_function data structure itself, but it's completely unrelated to cpu_online_mask. The mask to which the IPIs are sent is calculated before call_function.lock is taken in smp_call_function_many(), so the locking around set_cpu_online() is pointless and can be removed. [ tglx: Massaged changelog ] Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: ralf@linux-mips.org Cc: sshtylyov@mvista.com Cc: david.daney@cavium.com Cc: nikunj@linux.vnet.ibm.com Cc: paulmck@linux.vnet.ibm.com Cc: axboe@kernel.dk Cc: peterz@infradead.org Cc: Chris Metcalf <cmetcalf@tilera.com> Link: http://lkml.kernel.org/r/1338275765-3217-6-git-send-email-yong.zhang0@gmail.com Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-06-01Merge branch 'for-linus' of ↵Linus Torvalds3-38/+25
git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull third pile of signal handling patches from Al Viro: "This time it's mostly helpers and conversions to them; there's a lot of stuff remaining in the tree, but that'll either go in -rc2 (isolated bug fixes, ideally via arch maintainers' trees) or will sit there until the next cycle." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: x86: get rid of calling do_notify_resume() when returning to kernel mode blackfin: check __get_user() return value whack-a-mole with TIF_FREEZE FRV: Optimise the system call exit path in entry.S [ver #2] FRV: Shrink TIF_WORK_MASK [ver #2] FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptions new helper: signal_delivered() powerpc: get rid of restore_sigmask() most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set set_restore_sigmask() is never called without SIGPENDING (and never should be) TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is set don't call try_to_freeze() from do_signal() pull clearing RESTORE_SIGMASK into block_sigmask() sh64: failure to build sigframe != signal without handler openrisc: tracehook_signal_handler() is supposed to be called on success new helper: sigmask_to_save() new helper: restore_saved_sigmask() new helpers: {clear,test,test_and_clear}_restore_sigmask() HAVE_RESTORE_SIGMASK is defined on all architectures now
2012-06-01Merge branch 'for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs changes from Al Viro. "A lot of misc stuff. The obvious groups: * Miklos' atomic_open series; kills the damn abuse of ->d_revalidate() by NFS, which was the major stumbling block for all work in that area. * ripping security_file_mmap() and dealing with deadlocks in the area; sanitizing the neighborhood of vm_mmap()/vm_munmap() in general. * ->encode_fh() switched to saner API; insane fake dentry in mm/cleancache.c gone. * assorted annotations in fs (endianness, __user) * parts of Artem's ->s_dirty work (jff2 and reiserfs parts) * ->update_time() work from Josef. * other bits and pieces all over the place. Normally it would've been in two or three pull requests, but signal.git stuff had eaten a lot of time during this cycle ;-/" Fix up trivial conflicts in Documentation/filesystems/vfs.txt (the 'truncate_range' inode method was removed by the VM changes, the VFS update adds an 'update_time()' method), and in fs/btrfs/ulist.[ch] (due to sparse fix added twice, with other changes nearby). * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (95 commits) nfs: don't open in ->d_revalidate vfs: retry last component if opening stale dentry vfs: nameidata_to_filp(): don't throw away file on error vfs: nameidata_to_filp(): inline __dentry_open() vfs: do_dentry_open(): don't put filp vfs: split __dentry_open() vfs: do_last() common post lookup vfs: do_last(): add audit_inode before open vfs: do_last(): only return EISDIR for O_CREAT vfs: do_last(): check LOOKUP_DIRECTORY vfs: do_last(): make ENOENT exit RCU safe vfs: make follow_link check RCU safe vfs: do_last(): use inode variable vfs: do_last(): inline walk_component() vfs: do_last(): make exit RCU safe vfs: split do_lookup() Btrfs: move over to use ->update_time fs: introduce inode operation ->update_time reiserfs: get rid of resierfs_sync_super reiserfs: mark the superblock as dirty a bit later ...
2012-06-01new helper: signal_delivered()Al Viro1-1/+1
Does block_sigmask() + tracehook_signal_handler(); called when sigframe has been successfully built. All architectures converted to it; block_sigmask() itself is gone now (merged into this one). I'm still not too happy with the signature, but that's a separate story (IMO we need a structure that would contain signal number + siginfo + k_sigaction, so that get_signal_to_deliver() would fill one, signal_delivered(), handle_signal() and probably setup...frame() - take one). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from setAl Viro2-6/+0
Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01set_restore_sigmask() is never called without SIGPENDING (and never should be)Al Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01pull clearing RESTORE_SIGMASK into block_sigmask()Al Viro1-20/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helper: sigmask_to_save()Al Viro1-8/+3
replace boilerplate "should we use ->saved_sigmask or ->blocked?" with calls of obvious inlined helper... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helper: restore_saved_sigmask()Al Viro1-4/+1
first fruits of ..._restore_sigmask() helpers: now we can take boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK and restore the blocked mask from ->saved_mask" into a common helper. Open-coded instances switched... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01new helpers: {clear,test,test_and_clear}_restore_sigmask()Al Viro1-0/+16
helpers parallel to set_restore_sigmask(), used in the next commits Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-31Merge branch 'for-linus' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull second pile of signal handling patches from Al Viro: "This one is just task_work_add() series + remaining prereqs for it. There probably will be another pull request from that tree this cycle - at least for helpers, to get them out of the way for per-arch fixes remaining in the tree." Fix trivial conflict in kernel/irq/manage.c: the merge of Andrew's pile had brought in commit 97fd75b7b8e0 ("kernel/irq/manage.c: use the pr_foo() infrastructure to prefix printks") which changed one of the pr_err() calls that this merge moves around. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: keys: kill task_struct->replacement_session_keyring keys: kill the dummy key_replace_session_keyring() keys: change keyctl_session_to_parent() to use task_work_add() genirq: reimplement exit_irq_thread() hook via task_work_add() task_work_add: generic process-context callbacks avr32: missed _TIF_NOTIFY_RESUME on one of do_notify_resume callers parisc: need to check NOTIFY_RESUME when exiting from syscall move key_repace_session_keyring() into tracehook_notify_resume() TIF_NOTIFY_RESUME is defined on all targets now
2012-05-30bury __kernel_nlink_t, make internal nlink_t consistentAl Viro1-1/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds70-1164/+2458
Pull tile updates from Chris Metcalf: "These changes cover a range of new arch/tile features and optimizations. They've been through LKML review and on linux-next for a month or so. There's also one bug-fix that just missed 3.4, which I've marked for stable." Fixed up trivial conflict in arch/tile/Kconfig (new added tile Kconfig entries clashing with the generic timer/clockevents changes). * git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile: default to tilegx_defconfig for ARCH=tile tile: fix bug where fls(0) was not returning 0 arch/tile: mark TILEGX as not EXPERIMENTAL tile/mm/fault.c: Port OOM changes to handle_page_fault arch/tile: add descriptive text if the kernel reports a bad trap arch/tile: allow querying cpu module information from the hypervisor arch/tile: fix hardwall for tilegx and generalize for idn and ipi arch/tile: support multiple huge page sizes dynamically mm: add new arch_make_huge_pte() method for tile support arch/tile: support kexec() for tilegx arch/tile: support <asm/cachectl.h> header for cacheflush() syscall arch/tile: Allow tilegx to build with either 16K or 64K page size arch/tile: optimize get_user/put_user and friends arch/tile: support building big-endian kernel arch/tile: allow building Linux with transparent huge pages enabled arch/tile: use interrupt critical sections less
2012-05-25tile: default to tilegx_defconfig for ARCH=tileChris Metcalf1-1/+6
There is no "ARCH=tile" (just like there is no "ARCH=x86") so we need to pick a default configuration, either tilepro or tilegx, when users specify ARCH=tile. We'll use tilegx, since that's our current chip. Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-05-25tile: fix bug where fls(0) was not returning 0Chris Metcalf1-6/+6
This is because __builtin_clz(0) returns 64 for the "undefined" case of 0, since the builtin just does a right-shift 32 and "clz" instruction. So, use the alpha approach of casting to u32 and using __builtin_clzll(). Cc: stable@vger.kernel.org Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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