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2009-06-09powerpc/xmon: Remove unused variable in xmon.cStephen Rothwell
Gets rid of this warning: arch/powerpc/xmon/xmon.c: In function 'dump_log_buf': arch/powerpc/xmon/xmon.c:2133: warning: unused variable 'i' Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc/pseries: Fix warnings when printing resource_size_tStephen Rothwell
resource_size_t is 64 bits on pseries Gets rid of these warnings: arch/powerpc/platforms/pseries/iommu.c: In function 'pci_dma_bus_setup_pSeries': arch/powerpc/platforms/pseries/iommu.c:391: warning: format '%lx' expects type 'long unsigned int', but argument 2 has type 'resource_size_t' arch/powerpc/platforms/pseries/iommu.c:417: warning: format '%lx' expects type 'long unsigned int', but argument 2 has type 'resource_size_t' Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Shield code specific to 64-bit server processorsBenjamin Herrenschmidt
This is a random collection of added ifdef's around portions of code that only mak sense on server processors. Using either CONFIG_PPC_STD_MMU_64 or CONFIG_PPC_BOOK3S as seems appropriate. This is meant to make the future merging of Book3E 64-bit support easier. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Separate PACA fields for server CPUsBenjamin Herrenschmidt
This patch has no effect other than re-ordering PACA fields on current server CPUs. It however is a pre-requisite for future support of BookE 64-bit processors. Various parts of the PACA struct are now moved under some ifdef's, either the new CONFIG_PPC_BOOK3S or CONFIG_PPC_STD_MMU_64, whatever seems more appropriate. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.craashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Split exception handling out of head_64.SBenjamin Herrenschmidt
To prepare for future support of Book3E 64-bit PowerPC processors, which use a completely different exception handling, we move that code to a new exceptions-64s.S file. This file is #included from head_64.S due to some of the absolute address requirements which can currently only be fulfilled from within that file. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Introduce CONFIG_PPC_BOOK3SBenjamin Herrenschmidt
This patch introduce a new Kconfig option, CONFIG_PPC_BOOK3S that represents processors that are compliant with the "classic" (aka "server") variant of the PowerPC architecture. It replaces CONFIG_6xx on 32-bit (though the symbol is still defined for compatibility) and encompass all currently supported 64-bit processors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Move VMX and VSX asm code to vector.SBenjamin Herrenschmidt
Currently, load_up_altivec and give_up_altivec are duplicated in 32-bit and 64-bit. This creates a common implementation that is moved away from head_32.S, head_64.S and misc_64.S and into vector.S, using the same macros we already use for our common implementation of load_up_fpu. I also moved the VSX code over to vector.S though in that case I didn't make it build on 32-bit (yet). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Set init_bootmem_done on NUMA platforms as wellBenjamin Herrenschmidt
For some obscure reason, we only set init_bootmem_done after initializing bootmem when NUMA isn't enabled. We even document this next to the declaration of that global in system.h which of course I didn't read before I had to debug why some WIP code wasn't working properly... This patch changes it so that we always set it after bootmem is initialized which should have always been the case... go figure ! Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc/mm: Fix a AB->BA deadlock scenario with nohash MMU context lockBenjamin Herrenschmidt
The MMU context_lock can be taken from switch_mm() while the rq->lock is held. The rq->lock can also be taken from interrupts, thus if we get interrupted in destroy_context() with the context lock held and that interrupt tries to take the rq->lock, there's a possible deadlock scenario with another CPU having the rq->lock and calling switch_mm() which takes our context lock. The fix is to always ensure interrupts are off when taking our context lock. The switch_mm() path is already good so this fixes the destroy_context() path. While at it, turn the context lock into a new style spinlock. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc/mm: Fix some SMP issues with MMU context handlingBenjamin Herrenschmidt
This patch fixes a couple of issues that can happen as a result of steal_context() dropping the context_lock when all possible PIDs are ineligible for stealing (hopefully an extremely hard to hit occurence). This case exposes the possibility of a stale context_mm[] entry to be seen since destroy_context() doesn't clear it and the free map isn't re-tested. It also means steal_context() will not notice a context freed while the lock was help, thus possibly trying to steal a context when a free one was available. This fixes it by always returning to the caller from steal_context when it dropped the lock with a return value that causes the caller to re-samble the number of free contexts, along with properly clearing the context_mm[] array for destroyed contexts. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-09powerpc: Add PTRACE_SINGLEBLOCK supportRoland McGrath
Reworked by: Benjamin Herrenschmidt <benh@kernel.crashing.org> This adds block-step support on powerpc, including a PTRACE_SINGLEBLOCK request for ptrace. The BookE implementation is tweaked to fire a single step after a block step in order to mimmic the server behaviour. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-06fbdev: Add PLB support and cleanup DCR in xilinxfb driver.John Linn
Added support for the new xps tft controller. The new core has PLB interface support in addition to existing DCR interface. Removed platform device support as both MicroBlaze and PowerPC use device tree. Previously, the dcr interface was assumed to be used in mmio mode, and the register space of the dcr interface was precomputed and stuffed into the device tree. This driver now makes use of the new dcr infrastructure to represent the dcr interface. This enables the dcr interface to be connected directly to a native dcr interface in a clean way. Added compatibility for ml507 dvi core. Signed-off-by: Suneel <suneelg@xilinx.com> Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
2009-06-06powerpc/virtex: Add ml510 reference design device treeRoderick Colenbrander
As subject says, add dts files for Xilinx ML510 reference design with the PCI host bridge device. Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-06-06powerpc/virtex: Add Xilinx ML510 reference design supportRoderick Colenbrander
Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-06-06powerpc/virtex: refactor intc driver and add support for i8259 cascadingGrant Likely
This patch refactors some of the xilinx_intc interrupt controller driver and adds support for cascading an i8259 off one of the irq lines. This patch was based on the ML510 support work done by Roderick Colenbrander. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-06-06powerpc/virtex: Add support for Xilinx PCI host bridgeRoderick Colenbrander
This patch adds support for the Xilinx plbv46-pci-1.03.a PCI host bridge IPcore. Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-06-02powerpc/pci: Fix annotation of pcibios_claim_one_busStephen Rothwell
It was __devinit, but it is also within a CONFIG_HOTPLUG guarded section of code, so the __devinit does nothing but cause the following warning: WARNING: vmlinux.o(.text+0x107a8): Section mismatch in reference from the function pcibios_finish_adding_to_bus() to the function .devinit.text:pcibios_claim_one_bus() The function pcibios_finish_adding_to_bus() references the function __devinit pcibios_claim_one_bus(). This is often because pcibios_finish_adding_to_bus lacks a __devinit annotation or the annotation of pcibios_claim_one_bus is wrong. It is also only (externally) used in arch/powerpc/kernel/of_platform.c which cannot be built as a module so don't export it. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc/ftrace: Use PPC_INST_NOP directlyMichael Ellerman
There's no need to wrap PPC_INST_NOP in a static inline. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc/ftrace: Remove unused macrosMichael Ellerman
These macros were used in the original port, but since commit e4486fe316 (ftrace, use probe_kernel API to modify code) they are unused. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc/ftrace: Use ppc_function_entry() instead of GET_ADDRMichael Ellerman
Use ppc_function_entry() from code-patching.h. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc: Display processor virtualization resource allocs in lparcfgNathan Fontenot
This patch updates the output from /proc/ppc64/lparcfg to display the processor virtualization resource allocations for a shared processor partition. This information is already gathered via the h_get_ppp call, we just have to make sure that the ibm,partition-performance-parameters-level property is >= 1 to ensure that the information is valid. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc: Convert RTAS event scan from kernel thread to workqueueAnton Blanchard
RTAS event scan has to run across all cpus. Right now we use a kernel thread and set_cpus_allowed but in doing so we wake up the previous cpu unnecessarily. Some ftrace output shows this: previous cpu (2): [002] 7.022331: sched_switch: task swapper:0 [140] ==> rtasd:194 [120] [002] 7.022338: sched_switch: task rtasd:194 [120] ==> migration/2:9 [0] [002] 7.022344: sched_switch: task migration/2:9 [0] ==> swapper:0 [140] next cpu (3): [003] 7.022345: sched_switch: task swapper:0 [140] ==> rtasd:194 [120] [003] 7.022371: sched_switch: task rtasd:194 [120] ==> swapper:0 [140] We can use schedule_delayed_work_on and avoid the unnecessary wakeup. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02therm_adt746x: Always clear hardware bit which inverts fan speed range.Michel Dänzer
This bit would get enabled sometimes (probably after suspend/resume), so the fan would run at full speed below the temperature thresholds, but slow down and eventually stop if temperatures rose above the thresholds... not exactly what you want. Signed-off-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02tape: beyond ARRAY_SIZE of viocd_diskinforoel kluin
Do not go beyond ARRAY_SIZE of tape_device and viotape_unitinfo Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-02powerpc: Make the NR_CPUS max 8192Michael Neuling
We can compile and boot with NR_CPUS=8192, so make this the max. 1024 was an arbitrary decision anyway. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-29Merge branch 'merge' into nextBenjamin Herrenschmidt
2009-05-27Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: fix strncmp.o build error Blackfin: drop unneeded asm/.gitignore Blackfin: ignore generated vmlinux.lds MAINTAINERS: drop (subscribers-only) markings on Blackfin lists MAINTAINERS: update Blackfin items Blackfin: hook up preadv/pwritev syscalls
2009-05-27Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. powerpc: Minor cleanups of kernel virt address space definitions powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mm Revert "powerpc: Rework dma-noncoherent to use generic vmalloc layer"
2009-05-27CacheFiles: Fixup renamed filenames in comments in internal.hDavid Howells
Fix up renamed filenames in comments in fs/cachefiles/internal.h. Originally, the files were all called cf-xxx.c, but they got renamed to just xxx.c. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-27FS-Cache: Fixup renamed filenames in comments in internal.hDavid Howells
Fix up renamed filenames in comments in fs/fscache/internal.h. Originally, the files were all called fsc-xxx.c, but they got renamed to just xxx.c. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-27Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds
* 'for-linus' of git://neil.brown.name/md: md: raid5: change incorrect usage of 'min' macro to 'min_t'
2009-05-27md: raid5: change incorrect usage of 'min' macro to 'min_t'NeilBrown
A recent patch to raid5.c use min on an int and a sector_t. This isn't allowed. So change it to min_t(sector_t,x,y). Signed-off-by: NeilBrown <neilb@suse.de>
2009-05-27powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency.Benjamin Herrenschmidt
The implementation we just revived has issues, such as using a Kconfig-defined virtual address area in kernel space that nothing actually carves out (and thus will overlap whatever is there), or having some dependencies on being self contained in a single PTE page which adds unnecessary constraints on the kernel virtual address space. This fixes it by using more classic PTE accessors and automatically locating the area for consistent memory, carving an appropriate hole in the kernel virtual address space, leaving only the size of that area as a Kconfig option. It also brings some dma-mask related fixes from the ARM implementation which was almost identical initially but grew its own fixes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-27powerpc: Minor cleanups of kernel virt address space definitionsBenjamin Herrenschmidt
Make FIXADDR_TOP a compile time constant and cleanup a couple of definitions relative to the layout of the kernel address space on ppc32. We also print out that layout at boot time for debugging purposes. This is a pre-requisite for properly fixing non-coherent DMA allocactions. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-27powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mmBenjamin Herrenschmidt
(pre-requisite to make the next patches more palatable) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-27Blackfin: fix strncmp.o build errorMike Frysinger
Fix some more fallout of the string changes: CC arch/blackfin/lib/strncmp.o In file included from include/linux/bitmap.h:9, from include/linux/nodemask.h:90, from include/linux/mmzone.h:17, from include/linux/gfp.h:5, from include/linux/kmod.h:23, from include/linux/module.h:14, from arch/blackfin/lib/strncmp.c:14: include/linux/string.h: In function ‘strstarts’: include/linux/string.h:132: error: implicit declaration of function ‘strncmp’ make[1]: *** [arch/blackfin/lib/strncmp.o] Error 1 Signed-off-by: Mike Frysinger <vapier@gentoo.org> CC: Rusty Russell <rusty@rustcorp.com.au>
2009-05-27Blackfin: drop unneeded asm/.gitignoreMike Frysinger
We don't create a include/asm/mach/ symlink anymore, so we don't need the .gitignore for it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27Blackfin: ignore generated vmlinux.ldsMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27MAINTAINERS: drop (subscribers-only) markings on Blackfin listsMike Frysinger
All of the Blackfin lists are transparently moderated for non-subscribers. i.e. there are no annoying notices and people get whitelisted after first their posting. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27MAINTAINERS: update Blackfin itemsMike Frysinger
With Bryan Wu having moved on to another job, push the slack onto some other ADI lackeys. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27Blackfin: hook up preadv/pwritev syscallsMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27Revert "powerpc: Rework dma-noncoherent to use generic vmalloc layer"Benjamin Herrenschmidt
This reverts commit 33f00dcedb0e22cdb156a23632814fc580fcfcf8. While it was a good idea to try to use the mm/vmalloc.c allocator instead of our own (in fact, ours is itself a dup on an old variant of the vmalloc one), unfortunately, the approach is terminally busted since dma_alloc_coherent() can be called at interrupt time or in atomic contexts and there's little chances we'll make the code in mm/vmalloc.c cope with\ that :-( Until we can get the generic code to forbid that idiocy and fix all drivers abusing it, we pretty much have no choice but revert to our custom virtual space allocator. There's also a problem with SMP safety since freeing such mapping would require an IPI which cannot be done at interrupt time. However, right now, I don't think we support any platform that is both SMP and has non-coherent DMA (don't laugh, I know such things do exist !) so we can sort that out later. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: tomoyo: add missing call to cap_bprm_set_creds
2009-05-27tomoyo: add missing call to cap_bprm_set_credsHerton Ronaldo Krzesinski
cap_bprm_set_creds() has to be called from security_bprm_set_creds(). TOMOYO forgot to call cap_bprm_set_creds() from tomoyo_bprm_set_creds() and suid executables were not being working. Make sure we call cap_bprm_set_creds() with TOMOYO, to set credentials properly inside tomoyo_bprm_set_creds(). Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2009-05-26Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: avoid back to back on_each_cpu in cpa_flush_array x86, relocs: ignore R_386_NONE in kernel relocation entries
2009-05-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Add support for VGA load detection (pre-945). drm/i915: Use an I2C algo to do the flip to SDVO DDC bus. drm/i915: Determine type before initialising connector drm/i915: Return SDVO LVDS VBT mode if no EDID modes are detected. drm/i915: Fetch SDVO LVDS mode lines from VBT, then reserve them i915: support 8xx desktop cursors drm/i915: allocate large pointer arrays with vmalloc
2009-05-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: oprofile: fix cpu buffer size
2009-05-26x86: avoid back to back on_each_cpu in cpa_flush_arrayPallipadi, Venkatesh
Cleanup cpa_flush_array() to avoid back to back on_each_cpu() calls. [ Impact: optimizes fix 0af48f42df15b97080b450d24219dd95db7b929a ] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-05-26Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFSv4: Fix the case where NFSv4 renewal fails nfs: fix build error in nfsroot with initconst XPRTRDMA: fix client rpcrdma FRMR registration on mlx4 devices
2009-05-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Add missing check of pin vref 50 and others in Realtek codecs ALSA: hda - Add 5stack-no-fp model for STAC927x ALSA: hda - Add forced codec-slots for ASUS W5Fm
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