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2010-10-26mm: remove pte_*map_nested()Peter Zijlstra
Since we no longer need to provide KM_type, the whole pte_*map_nested() API is now redundant, remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-25Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'next' of git://git.monstr.eu/linux-2.6-microblaze: (42 commits) microblaze: Fix build with make 3.82 fbdev/xilinxfb: Microblaze driver support microblaze: Support C optimized lib functions for little-endian microblaze: Separate library optimized functions microblaze: Support timer on AXI lite microblaze: Add support for little-endian Microblaze microblaze: KGDB little endian support microblaze: Add PVR for endians plus detection net: emaclite: Add support for little-endian platforms microblaze: trivial: Add comment for AXI pvr microblaze: pci-common cleanup microblaze: Support early console on uart16550 microblaze: Do not compile early console support for uartlite if is disabled microblaze: Setup early console dynamically microblaze: Rename all uartlite early printk functions microblaze: remove early printk uarlite console dependency from header microblaze: Remove additional compatible properties microblaze: Remove hardcoded asm instraction for PVR loading microblaze: Use static const char * const where possible microblaze: Define VMALLOC_START/END ...
2010-10-21Merge branch 'core-memblock-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits) x86-64: Only set max_pfn_mapped to 512 MiB if we enter via head_64.S xen: Cope with unmapped pages when initializing kernel pagetable memblock, bootmem: Round pfn properly for memory and reserved regions memblock: Annotate memblock functions with __init_memblock memblock: Allow memblock_init to be called early memblock/arm: Fix memblock_region_is_memory() typo x86, memblock: Remove __memblock_x86_find_in_range_size() memblock: Fix wraparound in find_region() x86-32, memblock: Make add_highpages honor early reserved ranges x86, memblock: Fix crashkernel allocation arm, memblock: Fix the sparsemem build memblock: Fix section mismatch warnings powerpc, memblock: Fix memblock API change fallout memblock, microblaze: Fix memblock API change fallout x86: Remove old bootmem code x86, memblock: Use memblock_memory_size()/memblock_free_memory_size() to get correct dma_reserve x86: Remove not used early_res code x86, memblock: Replace e820_/_early string with memblock_ x86: Use memblock to replace early_res x86, memblock: Use memblock_debug to control debug message print out ... Fix up trivial conflicts in arch/x86/kernel/setup.c and kernel/Makefile
2010-10-21microblaze: Support timer on AXI liteMichal Simek
New microblaze systems uses two buses. One for memories and flashes and the second for low-speed peripherals which can run on different CLK. This is the reason why the kernel is trying to read clock-frequency directly from node. If there is then the kernel will work with it. If not then cpu CLK is used. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Add support for little-endian MicroblazeMichal Simek
Microblaze little-endian toolchain exports __MICROBLAZEEL__ which is used in the kernel to identify little/big endian. The most of the changes are in loading values from DTB which is always big endian. Little endian platforms are based on new AXI bus which has impact to early uartlite initialization. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Add PVR for endians plus detectionMichal Simek
Upcomming microblaze version will support little-endian. Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2010-10-21microblaze: trivial: Add comment for AXI pvrMichal Simek
AXI and OPB share some PVR macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Support early console on uart16550Michal Simek
Early console support reuse setting from U-BOOT that's why it is not necessary to setup baudrates, etc. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: remove early printk uarlite console dependency from headerMichal Simek
This dependency is resolved in menuconfig. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Define VMALLOC_START/ENDMichal Simek
per cpu changes requires VMALLOC_START/END to be define even for noMMU systems. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: support gpio_to_irq()Michal Simek
gpiolib returns -ENXIO if struct gpio_chip::to_irq isn't set, so it's safe to always call. Based on PPC patch "powerpc/gpio: support gpio_to_irq()" 78331aded913d76c7ff996a1a0747d54b057460b Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Define empty mmiowbMichal Simek
mmiowb is required by any driver. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: wire up prlimit64 and fanotify* syscallsMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: use asm-generic/pci-dma-compat.hFUJITA Tomonori
Use asm-generic/pci-dma-compat.h instead of the homegrown pci_set_dma_mask and pci_set_consistent_dma_mask. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
2010-10-21microblaze: Add PVR for BTCMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Removing dead CONTIGUOUS_PAGE_ALLOC config optionChristian Dietrich
CONFIG_CONTIGUOUS_PAGE_ALLOC doesn't exist in Kconfig, therefore removing all references to it from the source. Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Report if only one timer is usedMichal Simek
Kernel needs two timers because of clocksource and clockevent. It is better to show warning message directly on early console if available. If it isn't available kernel log buffer contains it. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: remove unused TIF_KERNEL_TRACEMichal Simek
TIF_KERNEL_TRACE is not used anywhere. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Add seccomp supportMichal Simek
Add seccomp support. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: trivial: thread_info cleanupMichal Simek
Coding style cleanup. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21microblaze: Fix pmd_populate macroMichal Simek
Compilation warning: mm/memory.c: In function '__pte_alloc': mm/memory.c:421: warning: assignment makes integer from pointer without a cast Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-07Fix IRQ flag handling namingDavid Howells
Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration, it maps: local_irq_enable() -> raw_local_irq_enable() local_irq_disable() -> raw_local_irq_disable() local_irq_save() -> raw_local_irq_save() ... and under the other configuration, it maps: raw_local_irq_enable() -> local_irq_enable() raw_local_irq_disable() -> local_irq_disable() raw_local_irq_save() -> local_irq_save() ... This is quite confusing. There should be one set of names expected of the arch, and this should be wrapped to give another set of names that are expected by users of this facility. Change this to have the arch provide: flags = arch_local_save_flags() flags = arch_local_irq_save() arch_local_irq_restore(flags) arch_local_irq_disable() arch_local_irq_enable() arch_irqs_disabled_flags(flags) arch_irqs_disabled() arch_safe_halt() Then linux/irqflags.h wraps these to provide: raw_local_save_flags(flags) raw_local_irq_save(flags) raw_local_irq_restore(flags) raw_local_irq_disable() raw_local_irq_enable() raw_irqs_disabled_flags(flags) raw_irqs_disabled() raw_safe_halt() with type checking on the flags 'arguments', and then wraps those to provide: local_save_flags(flags) local_irq_save(flags) local_irq_restore(flags) local_irq_disable() local_irq_enable() irqs_disabled_flags(flags) irqs_disabled() safe_halt() with tracing included if enabled. The arch functions can now all be inline functions rather than some of them having to be macros. Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile] Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze] Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM] Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR] Acked-by: Tony Luck <tony.luck@intel.com> [IA-64] Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R] Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU] Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC] Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC] Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390] Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score] Acked-by: Matt Fleming <matt@console-pimps.org> [SH] Acked-by: David S. Miller <davem@davemloft.net> [Sparc] Acked-by: Chris Zankel <chris@zankel.net> [Xtensa] Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha] Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300] Cc: starvik@axis.com [CRIS] Cc: jesper.nilsson@axis.com [CRIS] Cc: linux-cris-kernel@axis.com
2010-08-31Merge commit 'v2.6.36-rc3' into x86/memblockIngo Molnar
Conflicts: arch/x86/kernel/trampoline.c mm/memblock.c Merge reason: Resolve the conflicts, update to latest upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-08-11dma-mapping: remove dma_is_consistent APIFUJITA Tomonori
Architectures implement dma_is_consistent() in different ways (some misinterpret the definition of API in DMA-API.txt). So it hasn't been so useful for drivers. We have only one user of the API in tree. Unlikely out-of-tree drivers use the API. Even if we fix dma_is_consistent() in some architectures, it doesn't look useful at all. It was invented long ago for some old systems that can't allocate coherent memory at all. It's better to export only APIs that are definitely necessary for drivers. Let's remove this API. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11dma-mapping: unify dma_get_cache_alignment implementationsFUJITA Tomonori
dma_get_cache_alignment returns the minimum DMA alignment. Architectures defines it as ARCH_DMA_MINALIGN (formally ARCH_KMALLOC_MINALIGN). So we can unify dma_get_cache_alignment implementations. Note that some architectures implement dma_get_cache_alignment wrongly. dma_get_cache_alignment() should return the minimum DMA alignment. So fully-coherent architectures should return 1. This patch also fixes this issue. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGNFUJITA Tomonori
Now each architecture has the own dma_get_cache_alignment implementation. dma_get_cache_alignment returns the minimum DMA alignment. Architectures define it as ARCH_KMALLOC_MINALIGN (it's used to make sure that malloc'ed buffer is DMA-safe; the buffer doesn't share a cache with the others). So we can unify dma_get_cache_alignment implementations. This patch: dma_get_cache_alignment() needs to know if an architecture defines ARCH_KMALLOC_MINALIGN or not (needs to know if architecture has DMA alignment restriction). However, slab.h define ARCH_KMALLOC_MINALIGN if architectures doesn't define it. Let's rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN. ARCH_KMALLOC_MINALIGN is used only in the internals of slab/slob/slub (except for crypto). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-10Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits) block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n xen-blkfront: fix missing out label blkdev: fix blkdev_issue_zeroout return value block: update request stacking methods to support discards block: fix missing export of blk_types.h writeback: fix bad _bh spinlock nesting drbd: revert "delay probes", feature is being re-implemented differently drbd: Initialize all members of sync_conf to their defaults [Bugz 315] drbd: Disable delay probes for the upcomming release writeback: cleanup bdi_register writeback: add new tracepoints writeback: remove unnecessary init_timer call writeback: optimize periodic bdi thread wakeups writeback: prevent unnecessary bdi threads wakeups writeback: move bdi threads exiting logic to the forker thread writeback: restructure bdi forker loop a little writeback: move last_active to bdi writeback: do not remove bdi from bdi_list writeback: simplify bdi code a little writeback: do not lose wake-ups in bdi threads ... Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and drivers/scsi/scsi_error.c as per Jens.
2010-08-07remove needless ISA_DMA_THRESHOLDFUJITA Tomonori
Architectures don't need to define ISA_DMA_THRESHOLD anymore. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: James Bottomley <James.Bottomley@suse.de> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-06Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits) tracing/kprobes: unregister_trace_probe needs to be called under mutex perf: expose event__process function perf events: Fix mmap offset determination perf, powerpc: fsl_emb: Restore setting perf_sample_data.period perf, powerpc: Convert the FSL driver to use local64_t perf tools: Don't keep unreferenced maps when unmaps are detected perf session: Invalidate last_match when removing threads from rb_tree perf session: Free the ref_reloc_sym memory at the right place x86,mmiotrace: Add support for tracing STOS instruction perf, sched migration: Librarize task states and event headers helpers perf, sched migration: Librarize the GUI class perf, sched migration: Make the GUI class client agnostic perf, sched migration: Make it vertically scrollable perf, sched migration: Parameterize cpu height and spacing perf, sched migration: Fix key bindings perf, sched migration: Ignore unhandled task states perf, sched migration: Handle ignored migrate out events perf: New migration tool overview tracing: Drop cpparg() macro perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call ... Fix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c
2010-08-05Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (63 commits) of/platform: Register of_platform_drivers with an "of:" prefix of/address: Clean up function declarations of/spi: call of_register_spi_devices() from spi core code of: Provide default of_node_to_nid() implementation. of/device: Make of_device_make_bus_id() usable by other code. of/irq: Fix endian issues in parsing interrupt specifiers of: Fix phandle endian issues of/flattree: fix of_flat_dt_is_compatible() to match the full compatible string of: remove of_default_bus_ids of: make of_find_device_by_node generic microblaze: remove references to of_device and to_of_device sparc: remove references to of_device and to_of_device powerpc: remove references to of_device and to_of_device of/device: Replace of_device with platform_device in includes and core code of/device: Protect against binding of_platform_drivers to non-OF devices of: remove asm/of_device.h of: remove asm/of_platform.h of/platform: remove all of_bus_type and of_platform_bus_type references of: Merge of_platform_bus_type with platform_bus_type drivercore/of: Add OF style matching to platform bus ... Fix up trivial conflicts in arch/microblaze/kernel/Makefile due to just some obj-y removals by the devicetree branch, while the microblaze updates added a new file.
2010-08-05Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (49 commits) microblaze: Add KGDB support microblaze: Support brki rX, 0x18 for user application debugging microblaze: Remove nop after MSRCLR/SET, MTS, MFS instructions microblaze: Simplify syscall rutine microblaze: Move PT_MODE saving to delay slot microblaze: Fix _interrupt function microblaze: Fix _user_exception function microblaze: Put together addik instructions microblaze: Use delay slot in syscall macros microblaze: Save kernel mode in delay slot microblaze: Do not mix register saving and mode setting microblaze: Move SAVE_STATE upward microblaze: entry.S: Macro optimization microblaze: Optimize hw exception rutine microblaze: Implement clear_ums macro and fix SAVE_STATE macro microblaze: Remove additional setup for kernel_mode microblaze: Optimize SAVE_STATE macro microblaze: Remove additional loading microblaze: Completely remove working with R11 register microblaze: Do not setup BIP in _debug_exception ...
2010-08-05memblock: Introduce default allocation limit and use it to replace explicit onesBenjamin Herrenschmidt
This introduce memblock.current_limit which is used to limit allocations from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE). The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still be used with memblock_alloc_base() to allocate really anywhere. It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears. Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I strongly recommend that you ensure that you set an appropriate limit during boot in order to guarantee that an memblock_alloc() at any time results in something that is accessible with a simple __va(). The reason is that a subsequent patch will introduce the ability for the array to resize itself by reallocating itself. The MEMBLOCK core will honor the current limit when performing those allocations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-08-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits) phy/marvell: add 88ec048 support igb: Program MDICNFG register prior to PHY init e1000e: correct MAC-PHY interconnect register offset for 82579 hso: Add new product ID can: Add driver for esd CAN-USB/2 device l2tp: fix export of header file for userspace can-raw: Fix skb_orphan_try handling Revert "net: remove zap_completion_queue" net: cleanup inclusion phy/marvell: add 88e1121 interface mode support u32: negative offset fix net: Fix a typo from "dev" to "ndev" igb: Use irq_synchronize per vector when using MSI-X ixgbevf: fix null pointer dereference due to filter being set for VLAN 0 e1000e: Fix irq_synchronize in MSI-X case e1000e: register pm_qos request on hardware activation ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice net: Add getsockopt support for TCP thin-streams cxgb4: update driver version cxgb4: add new PCI IDs ... Manually fix up conflicts in: - drivers/net/e1000e/netdev.c: due to pm_qos registration infrastructure changes - drivers/net/phy/marvell.c: conflict between adding 88ec048 support and cleaning up the IDs - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req conflict (registration change vs marking it static)
2010-08-04microblaze: Add KGDB supportMichal Simek
Kgdb uses brki r16, 0x18 instruction to call low level _debug_exception function which save current state to pt_regs and call microblaze_kgdb_break function. _debug_exception should be called only from the kernel space. User space calling is not supported because user application debugging uses different handling. pt_regs_to_gdb_regs loads additional special registers which can't be changed * Enable KGDB in Kconfig * Remove ancient not-tested KGDB support * Remove ancient _debug_exception code from entry.S Only MMU KGDB support is supported. Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com> CC: John Williams <john.williams@petalogix.com> CC: Edgar E. Iglesias <edgar.iglesias@petalogix.com> CC: linux-kernel@vger.kernel.org Acked-by: Jason Wessel <jason.wessel@windriver.com>
2010-08-04microblaze: Fix number of pvr regsMichal Simek
Microblaze has only 11 pvr regs according manual. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04microblaze: remove unused HAVE_ARCH_PCI_SET_DMA_MASKFUJITA Tomonori
HAVE_ARCH_PCI_SET_DMA_MASK was removed in 2.6.34 (no architecture has the own implementation of pci_set_dma_mask). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04microblaze: Improve ftrace time measuringMichal Simek
I had to comment sched_clock generic function because of broken toolchain. It is fine grain timing. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04microblaze: Add stack unwinderSteven J. Magnani
Implement intelligent backtracing by searching for stack frame creation, and emitting only return addresses. Use print_hex_dump() to display the entire binary kernel stack. Limitation: MMU kernels are not currently able to trace beyond a system trap (interrupt, syscall, etc.). It is the intent of this patch to provide infrastructure that can be extended to add this capability later. Changes from V1: * Removed checks in find_frame_creation() that prevented location of the frame creation instruction in heavily optimized code * Various formatting/commenting/file location tweaks per review comments * Dropped Kconfig option to enable STACKTRACE as something logically separate Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
2010-08-04microblaze: Allow PAGE_SIZE configurationSteven J. Magnani
Allow developer to configure memory page size at compile time. Larger pages can improve performance on some workloads. Based on PowerPC code. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04microblaze: Fix copy_to_user_page macroMichal Simek
copy_to_user_page macro is used in mm/memory.c:access_process_vm function. This function is called from ptrace code (POKETEXT, POKEDATA) which write data to memory. Microblaze handle physical address for caches that's why there is virt_to_phys conversion. There is potential one location which can caused the problem on WB system. The important is take a look at write PTRACEs requests (POKE/TEXT, DATA, USR). Note: Majority of Microblaze PTRACE code is moved to generic location in newer kernel version that's why this solution should work on the newest kernel version too. linux/io.h is in cacheflush because of mm/nommu.c Tested on a WB system - hello world debugging. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04microblaze: Implement flush_dcache_page macroMichal Simek
flush_dcache_page macro is necessary to implement for JFFS2 rootfs support on WB system. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-02microblaze: Fix __copy_to/from_user_inatomic macrosMichal Simek
__copy_to/from_user_inatomic should call __copy_to/from_user because there is not necessary to check access because of kernel function. might_sleep in copy_to/from_user macros is causing problems in debug sessions too (CONFIG_DEBUG_SPINLOCK_SLEEP). BUG: sleeping function called from invalid context at .../arch/microblaze/include/asm/uaccess.h:388 in_atomic(): 1, irqs_disabled(): 0, pid: 1, name: swapper 1 lock held by swapper/1: #0: (&p->cred_guard_mutex){......}, at: [<c00d4b90>] prepare_bprm_creds+0x2c/0x88 Kernel Stack: ... Call Trace: [<c0006bd4>] microblaze_unwind+0x7c/0x94 [<c0006684>] show_stack+0xf4/0x190 [<c0006730>] dump_stack+0x10/0x30 [<c00103a0>] __might_sleep+0x12c/0x160 [<c0090de4>] file_read_actor+0x1d8/0x2a8 [<c0091568>] generic_file_aio_read+0x6b4/0xa64 [<c00cd778>] do_sync_read+0xac/0x110 [<c00ce254>] vfs_read+0xc8/0x160 [<c00d585c>] kernel_read+0x38/0x64 [<c00d5984>] prepare_binprm+0xfc/0x130 [<c00d6430>] do_execve+0x228/0x370 [<c000614c>] microblaze_execve+0x58/0xa4 caused by file_read_actor (mm/filemap.c) which calls __copy_to_user_inatomic. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-01of/address: Clean up function declarationsGrant Likely
This patch moves the declaration of of_get_address(), of_get_pci_address(), and of_pci_address_to_resource() out of arch code and into the common linux/of_address header file. This patch also fixes some of the asm/prom.h ordering issues. It still includes some header files that it ideally shouldn't be, but at least the ordering is consistent now so that of_* overrides work. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-07-30of: Provide default of_node_to_nid() implementation.Grant Likely
of_node_to_nid() is only relevant in a few architectures. Don't force everyone to implement it anyway. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-07-24of: remove asm/of_device.hGrant Likely
It is mostly unused now. Sparc has a few defines left in it, but they can be moved to other headers. Removing this header means that new architectures adding CONFIG_OF support don't need to also add this header file. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David S. Miller <davem@davemloft.net>
2010-07-24of: remove asm/of_platform.hGrant Likely
Only thing left in it is of_instantiate_rtc() which can be moved to asm/prom.h on PowerPC and is unused in microblaze. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David S. Miller <davem@davemloft.net>
2010-07-24Merge commit 'v2.6.35-rc6' into devicetree/nextGrant Likely
Conflicts: arch/sparc/kernel/prom_64.c
2010-07-21Merge branch 'linus' into perf/coreIngo Molnar
Merge reason: Pick up the latest perf fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-07-18of: Remove unused of_find_device_by_phandle()Grant Likely
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-07-14of/flattree: Use common ALIGN() macro instead of arch specific _ALIGNGrant Likely
There's no reason to use the powerpc-specific _ALIGN macro in the fdt code. Replace it with ALIGN() from kernel.h Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-By: Jeremy Kerr <jeremy.kerr@canonical.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>