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2009-07-15percpu: add dummy pcpu_lpage_remapped() for !CONFIG_SMPTejun Heo1-0/+5
!CONFIG_SMP was missing pcpu_lpage_remapped() definition causing build failure. Add dummy implementation. This was discovered by linux-next testing. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
2009-07-15ia64: Fix setup_per_cpu_areas() compilation errorFenghua Yu1-0/+6
Fix ia64 build setup_per_cpu_areas() redifinition issue in UP configuration. When compiling ia64 kernel in UP configuration, the following compilation errors are reported: arch/ia64/kernel/setup.c:860: error: redefinition of 'setup_per_cpu_areas' include/linux/percpu.h:185: error: previous definition of 'setup_per_cpu_areas' was here The patch fixes the issue in arch/ia64/kernel/setup.c Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-07-09linker script: unify usage of discard definitionTejun Heo25-155/+80
Discarded sections in different archs share some commonality but have considerable differences. This led to linker script for each arch implementing its own /DISCARD/ definition, which makes maintaining tedious and adding new entries error-prone. This patch makes all linker scripts to move discard definitions to the end of the linker script and use the common DISCARDS macro. As ld uses the first matching section definition, archs can include default discarded sections by including them earlier in the linker script. ia64 is notable because it first throws away some ia64 specific subsections and then include the rest of the sections into the final image, so those sections must be discarded before the inclusion. defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64, alpha, sparc, sparc64 and s390. Michal Simek tested microblaze. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Tested-by: Michal Simek <monstr@monstr.eu> Cc: linux-arch@vger.kernel.org Cc: Michal Simek <monstr@monstr.eu> Cc: microblaze-uclinux@itee.uq.edu.au Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Tony Luck <tony.luck@intel.com>
2009-07-09microblaze: include EXIT_TEXT to _stextMichal Simek1-2/+2
Microblaze wants to throw out EXIT_TEXT during runtime too. This hasn't caused trouble till now because the linker script didn't discard EXIT_TEXT and it ended up in its default output section. As discard definition is about to be unified, include EXIT_TEXT into _stext explicitly and while at it replace explicit exitcall definition to EXIT_CALL. Signed-off-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-07-04percpu: teach large page allocator about NUMATejun Heo3-95/+359
Large page first chunk allocator is primarily used for NUMA machines; however, its NUMA handling is extremely simplistic. Regardless of their proximity, each cpu is put into separate large page just to return most of the allocated space back wasting large amount of vmalloc space and increasing cache footprint. This patch teachs NUMA details to large page allocator. Given processor proximity information, pcpu_lpage_build_unit_map() will find fitting cpu -> unit mapping in which cpus in LOCAL_DISTANCE share the same large page and not too much virtual address space is wasted. This greatly reduces the unit and thus chunk size and wastes much less address space for the first chunk. For example, on 4/4 NUMA machine, the original code occupied 16MB of virtual space for the first chunk while the new code only uses 4MB - one 2MB page for each node. [ Impact: much better space efficiency on NUMA machines ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jan Beulich <JBeulich@novell.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Miller <davem@davemloft.net>
2009-07-04percpu: allow non-linear / sparse cpu -> unit mappingTejun Heo3-37/+97
Currently cpu and unit are always identity mapped. To allow more efficient large page support on NUMA and lazy allocation for possible but offline cpus, cpu -> unit mapping needs to be non-linear and/or sparse. This can be easily implemented by adding a cpu -> unit mapping array and using it whenever looking up the matching unit for a cpu. The only unusal conversion is in pcpu_chunk_addr_search(). The passed in address is unit0 based and unit0 might not be in use so it needs to be converted to address of an in-use unit. This is easily done by adding the unit offset for the current processor. [ Impact: allows non-linear/sparse cpu -> unit mapping, no visible change yet ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net>
2009-07-04percpu: drop pcpu_chunk->page[]Tejun Heo3-249/+400
percpu core doesn't need to tack all the allocated pages. It needs to know whether certain pages are populated and a way to reverse map address to page when freeing. This patch drops pcpu_chunk->page[] and use populated bitmap and vmalloc_to_page() lookup instead. Using vmalloc_to_page() exclusively is also possible but complicates first chunk handling, inflates cache footprint and prevents non-standard memory allocation for percpu memory. pcpu_chunk->page[] was used to track each page's allocation and allowed asymmetric population which happens during failure path; however, with single bitmap for all units, this is no longer possible. Bite the bullet and rewrite (de)populate functions so that things are done in clearly separated steps such that asymmetric population doesn't happen. This makes the (de)population process much more modular and will also ease implementing non-standard memory usage in the future (e.g. large pages). This makes @get_page_fn parameter to pcpu_setup_first_chunk() unnecessary. The parameter is dropped and all first chunk helpers are updated accordingly. Please note that despite the volume most changes to first chunk helpers are symbol renames for variables which don't need to be referenced outside of the helper anymore. This change reduces memory usage and cache footprint of pcpu_chunk. Now only #unit_pages bits are necessary per chunk. [ Impact: reduced memory usage and cache footprint for bookkeeping ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net>
2009-07-04percpu: reorder a few functions in mm/percpu.cTejun Heo1-45/+45
(de)populate functions are about to be reimplemented to drop pcpu_chunk->page array. Move a few functions so that the rewrite patch doesn't have code movement making it more difficult to read. [ Impact: code movement ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04percpu: simplify pcpu_setup_first_chunk()Tejun Heo3-78/+33
Now that all first chunk allocator helpers allocate and map the first chunk themselves, there's no need to have optional default alloc/map in pcpu_setup_first_chunk(). Drop @populate_pte_fn and only leave @dyn_size optional and make all other params mandatory. This makes it much easier to follow what pcpu_setup_first_chunk() is doing and what actual differences tweaking each parameter results in. [ Impact: drop unused code path ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04x86,percpu: generalize lpage first chunk allocatorTejun Heo5-171/+244
Generalize and move x86 setup_pcpu_lpage() into pcpu_lpage_first_chunk(). setup_pcpu_lpage() now is a simple wrapper around the generalized version. Other than taking size parameters and using arch supplied callbacks to allocate/free/map memory, pcpu_lpage_first_chunk() is identical to the original implementation. This simplifies arch code and will help converting more archs to dynamic percpu allocator. While at it, factor out pcpu_calc_fc_sizes() which is common to pcpu_embed_first_chunk() and pcpu_lpage_first_chunk(). [ Impact: code reorganization and generalization ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04percpu: make 4k first chunk allocator map memoryTejun Heo1-17/+54
At first, percpu first chunk was always setup page-by-page by the generic code. To add other allocators, different parts of the generic initialization was made optional. Now we have three allocators - embed, remap and 4k. embed and remap fully handle allocation and mapping of the first chunk while 4k still depends on generic code for those. This makes the generic alloc/map paths specifci to 4k and makes the code unnecessary complicated with optional generic behaviors. This patch makes the 4k allocator to allocate and map memory directly instead of depending on the generic code. The only outside visible change is that now dynamic area in the first chunk is allocated up-front instead of on-demand. This doesn't make any meaningful difference as the area is minimal (usually less than a page, just enough to fill the alignment) on 4k allocator. Plus, dynamic area in the first chunk usually gets fully used anyway. This will allow simplification of pcpu_setpu_first_chunk() and removal of chunk->page array. [ Impact: no outside visible change other than up-front allocation of dyn area ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04x86,percpu: generalize 4k first chunk allocatorTejun Heo3-62/+113
Generalize and move x86 setup_pcpu_4k() into pcpu_4k_first_chunk(). setup_pcpu_4k() now is a simple wrapper around the generalized version. Other than taking size parameters and using arch supplied callbacks to allocate/free memory, pcpu_4k_first_chunk() is identical to the original implementation. This simplifies arch code and will help converting more archs to dynamic percpu allocator. While at it, s/pcpu_populate_pte_fn_t/pcpu_fc_populate_pte_fn_t/ for consistency. [ Impact: code reorganization and generalization ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04percpu: drop @unit_size from embed first chunk allocatorTejun Heo3-14/+8
The only extra feature @unit_size provides is making dead space at the end of the first chunk which doesn't have any valid usecase. Drop the parameter. This will increase consistency with generalized 4k allocator. James Bottomley spotted missing conversion for the default setup_per_cpu_areas() which caused build breakage on all arcsh which use it. [ Impact: drop unused code path ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04x86: make pcpu_chunk_addr_search() matching stricterTejun Heo1-1/+1
The @addr passed into pcpu_chunk_addr_search() is unit0 based address and thus should be matched inside unit0 area. Currently, when it uses chunk size when determining whether the address falls in the first chunk. Addresses in unitN where N>0 shouldn't be passed in anyway, so this doesn't cause any malfunction but fix it for consistency. [ Impact: mostly cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu>
2009-07-04Merge branch 'master' into for-nextTejun Heo1365-17518/+55214
Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix changes. As alpha in percpu tree uses 'weak' attribute instead of inline assembly, there's no need for __used attribute. Conflicts: arch/alpha/include/asm/percpu.h arch/mn10300/kernel/vmlinux.lds.S include/linux/percpu-defs.h
2009-07-02Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notifyLinus Torvalds1-0/+3
* 'for-linus' of git://git.infradead.org/users/eparis/notify: fs/notify/inotify: decrement user inotify count on close
2009-07-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds8-193/+423
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix error message formatting Btrfs: fix use after free in btrfs_start_workers fail path Btrfs: honor nodatacow/sum mount options for new files Btrfs: update backrefs while dropping snapshot Btrfs: account for space we may use in fallocate Btrfs: fix the file clone ioctl for preallocated extents Btrfs: don't log the inode in file_write while growing the file
2009-07-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds6-13/+20
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] cxgb3i: fix connection error when vlan is enabled [SCSI] FC transport: Locking fix for common-code FC pass-through patch [SCSI] zalon: fix oops on attach failure [SCSI] fnic: use DMA_BIT_MASK(nn) instead of deprecated DMA_nnBIT_MASK [SCSI] fnic: remove redundant BUG_ONs and fix checks on unsigned [SCSI] ibmvscsi: Fix module load hang
2009-07-02Merge git://git.infradead.org/iommu-2.6Linus Torvalds3-359/+353
* git://git.infradead.org/iommu-2.6: (38 commits) intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable() intel-iommu: Introduce first_pte_in_page() to simplify PTE-setting loops intel-iommu: Use cmpxchg64_local() for setting PTEs intel-iommu: Warn about unmatched unmap requests intel-iommu: Kill superfluous mapping_lock intel-iommu: Ensure that PTE writes are 64-bit atomic, even on i386 intel-iommu: Make iommu=pt work on i386 too intel-iommu: Performance improvement for dma_pte_free_pagetable() intel-iommu: Don't free too much in dma_pte_free_pagetable() intel-iommu: dump mappings but don't die on pte already set intel-iommu: Combine domain_pfn_mapping() and domain_sg_mapping() intel-iommu: Introduce domain_sg_mapping() to speed up intel_map_sg() intel-iommu: Simplify __intel_alloc_iova() intel-iommu: Performance improvement for domain_pfn_mapping() intel-iommu: Performance improvement for dma_pte_clear_range() intel-iommu: Clean up iommu_domain_identity_map() intel-iommu: Remove last use of PHYSICAL_PAGE_MASK, for reserving PCI BARs intel-iommu: Make iommu_flush_iotlb_psi() take pfn as argument intel-iommu: Change aligned_size() to aligned_nrpages() intel-iommu: Clean up intel_map_sg(), remove domain_page_mapping() ...
2009-07-02x86: add boundary check for 32bit res before expand e820 resource to alignmentYinghai Lu1-6/+10
fix hang with HIGHMEM_64G and 32bit resource. According to hpa and Linus, use (resource_size_t)-1 to fend off big ranges. Analyzed by hpa Reported-and-tested-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-02x86: fix power-of-2 round_up/round_down macrosLinus Torvalds1-2/+9
These macros had two bugs: - the type of the mask was not correctly expanded to the full size of the argument being expanded, resulting in possible loss of high bits when mixing types. - the alignment argument was evaluated twice, despite the macro looking like a fancy function (but it really does need to be a macro, since it works on arbitrary integer types) Noticed by Peter Anvin, and with a fix that is a modification of his suggestion (bug noticed by Yinghai Lu). Cc: Peter Anvin <hpa@zytor.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-02Btrfs: fix error message formattingHu Tao1-1/+1
Make an error msg look nicer by inserting a space between number and word. Signed-off-by: Hu Tao <hu.taoo@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-07-02Btrfs: fix use after free in btrfs_start_workers fail pathJiri Slaby1-1/+1
worker memory is already freed on one fail path in btrfs_start_workers, but is still dereferenced. Switch the dereference and kfree. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-07-02Btrfs: honor nodatacow/sum mount options for new filesChris Mason1-6/+7
The btrfs attr patches unconditionally inherited the inode flags field without honoring nodatacow and nodatasum. This fix makes sure we properly record the nodatacow/sum mount options in new inodes. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-07-02Btrfs: update backrefs while dropping snapshotYan Zheng4-181/+395
The new backref format has restriction on type of backref item. If a tree block isn't referenced by its owner tree, full backrefs must be used for the pointers in it. When a tree block loses its owner tree's reference, backrefs for the pointers in it should be updated to full backrefs. Current btrfs_drop_snapshot misses the code that updates backrefs, so it's unsafe for general use. This patch adds backrefs update code to btrfs_drop_snapshot. It isn't a problem in the restricted form btrfs_drop_snapshot is used today, but for general snapshot deletion this update is required. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-07-02Btrfs: account for space we may use in fallocateJosef Bacik1-1/+11
Using Eric Sandeen's xfstest for fallocate, you can easily trigger a ENOSPC panic on btrfs. This is because we do not account for data we may use when doing the fallocate. This patch fixes the problem by properly reserving space, and then just freeing it when we are done. The reservation stuff was made with delalloc in mind, so its a little crude for this case, but it keeps the box from panicing. Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-07-02Btrfs: fix the file clone ioctl for preallocated extentsChris Mason1-2/+4
2009-07-02Btrfs: don't log the inode in file_write while growing the fileChris Mason1-1/+4
2009-07-02fs/notify/inotify: decrement user inotify count on closeKeith Packard1-0/+3
The per-user inotify_devs value is incremented each time a new file is allocated, but never decremented. This led to inotify_init failing after a limited number of calls. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2009-07-02intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable()David Woodhouse1-2/+4
Check dma_pte_present() and only free the page if there _is_ one. Kind of surprising that there was no warning about this. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-02intel-iommu: Introduce first_pte_in_page() to simplify PTE-setting loopsDavid Woodhouse1-11/+13
On Wed, 2009-07-01 at 16:59 -0700, Linus Torvalds wrote: > I also _really_ hate how you do > > (unsigned long)pte >> VTD_PAGE_SHIFT == > (unsigned long)first_pte >> VTD_PAGE_SHIFT Kill this, in favour of just looking to see if the incremented pte pointer has 'wrapped' onto the next page. Which means we have to check it _after_ incrementing it, not before. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-01FRV: Add basic performance counter supportDavid Howells4-1/+38
Add basic performance counter support to the FRV arch. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01FRV: Implement atomic64_tDavid Howells6-5/+236
Implement atomic64_t and its ops for FRV. Tested with the following patch: diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c index 55e4fab..086d50d 100644 --- a/arch/frv/kernel/setup.c +++ b/arch/frv/kernel/setup.c @@ -746,6 +746,52 @@ static void __init parse_cmdline_early(char *cmdline) } /* end parse_cmdline_early() */ +static atomic64_t xxx; + +static void test_atomic64(void) +{ + atomic64_set(&xxx, 0x12300000023LL); + + mb(); + BUG_ON(atomic64_read(&xxx) != 0x12300000023LL); + mb(); + if (atomic64_inc_return(&xxx) != 0x12300000024LL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != 0x12300000024LL); + mb(); + if (atomic64_sub_return(0x36900000050LL, &xxx) != -0x2460000002cLL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != -0x2460000002cLL); + mb(); + if (atomic64_dec_return(&xxx) != -0x2460000002dLL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != -0x2460000002dLL); + mb(); + if (atomic64_add_return(0x36800000001LL, &xxx) != 0x121ffffffd4LL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != 0x121ffffffd4LL); + mb(); + if (atomic64_cmpxchg(&xxx, 0x123456789abcdefLL, 0x121ffffffd4LL) != 0x121ffffffd4LL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != 0x121ffffffd4LL); + mb(); + if (atomic64_cmpxchg(&xxx, 0x121ffffffd4LL, 0x123456789abcdefLL) != 0x121ffffffd4LL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != 0x123456789abcdefLL); + mb(); + if (atomic64_xchg(&xxx, 0xabcdef123456789LL) != 0x123456789abcdefLL) + BUG(); + mb(); + BUG_ON(atomic64_read(&xxx) != 0xabcdef123456789LL); + mb(); +} + /*****************************************************************************/ /* * @@ -845,6 +891,8 @@ void __init setup_arch(char **cmdline_p) // asm volatile("movgs %0,timerd" :: "r"(10000000)); // __set_HSR(0, __get_HSR(0) | HSR0_ETMD); + test_atomic64(); + } /* end setup_arch() */ #if 0 Note that this doesn't cover all the trivial wrappers, but does cover all the substantial implementations. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01intel-iommu: Use cmpxchg64_local() for setting PTEsDavid Woodhouse1-1/+1
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-01intel-iommu: Warn about unmatched unmap requestsDavid Woodhouse1-2/+4
This would have found the bug in i386 pci_unmap_addr() a long time ago. We shouldn't just silently return without doing anything. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds14-57/+307
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: LCDC dcache flush for deferred io sh: Fix compiler error and include the definition of IS_ERR_VALUE sh: re-add LCDC fbdev support to the Migo-R defconfig sh: fix se7724 ceu names sh: ms7724se: Enable sh_eth in defconfig. arch/sh/boards/mach-se/7206/io.c: Remove unnecessary semicolons sh: ms7724se: Add sh_eth support nommu: provide follow_pfn(). sh: Kill off unused DEBUG_BOOTMEM symbol. perf_counter tools: add cpu_relax()/rmb() definitions for sh. sh64: Hook up page fault events for software perf counters. sh: Hook up page fault events for software perf counters. sh: make set_perf_counter_pending() static inline. clocksource: sh_tmu: Make undefined TCOR behaviour less undefined.
2009-07-01intel-iommu: Kill superfluous mapping_lockDavid Woodhouse1-10/+2
Since we're using cmpxchg64() anyway (because that's the only way to do an atomic 64-bit store on i386), we might as well ditch the extra locking and just use cmpxchg64() to ensure that we don't add the page twice. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-02sh: LCDC dcache flush for deferred ioPaul Mundt1-8/+45
Since writenotify on uncached vmas is unsupported in 2.6.31, live with cached framebuffer memory in the deferred io case for now and flush the dcache before forcing refresh. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Magnus damm <damm@igel.co.jp>
2009-07-02sh: Fix compiler error and include the definition of IS_ERR_VALUEMatt Fleming1-0/+1
When arch/sh/include/asm/syscall_32.h is included from a file that doesn't also include linux/err.h the following error is produced, In file included from /home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall.h:5, from kernel/trace/trace_syscalls.c:3: /home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h: In function 'syscall_get_error': /home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h:28: error: implicit declaration of function 'IS_ERR_VALUE' make[2]: *** [kernel/trace/trace_syscalls.o] Error 1 make[1]: *** [kernel/trace] Error 2 make: *** [kernel] Error 2 Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-01kernel-doc: move ignoring kmemcheckRandy Dunlap1-2/+2
Somehow I managed to generate a diff that put these 2 lines into the wrong function: should have been in dump_struct() instead of in dump_enum(). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01Merge git://git.infradead.org/mtd-2.6Linus Torvalds8-28/+38
* git://git.infradead.org/mtd-2.6: mtd: nand: fix build failure and incorrect return from omap_wait() mtd: Use BLOCK_NIL consistently in NFTL/INFTL mtd: m25p80 timeout too short for worst-case m25p16 devices mtd: atmel_nand: Fix typo s/parititions/partitions/ mtd: cmdlineparts: Use 64-bit format when printing a debug message. mtd: maps: Remove BUS_ID_SIZE from integrator_flash jffs2: fix another potential leak on error path in scan.c
2009-07-01intel-iommu: Ensure that PTE writes are 64-bit atomic, even on i386David Woodhouse1-14/+23
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-01Merge branch 'for-linus' of ↵Linus Torvalds6-11/+262
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: invalidation reverse calls fuse: allow umask processing in userspace fuse: fix bad return value in fuse_file_poll() fuse: fix return value of fuse_dev_write()
2009-07-01Fix iommu address space allocationDavid Woodhouse1-4/+22
This fixes kernel.org bug #13584. The IOVA code attempted to optimise the insertion of new ranges into the rbtree, with the unfortunate result that some ranges just didn't get inserted into the tree at all. Then those ranges would be handed out more than once, and things kind of go downhill from there. Introduced after 2.6.25 by ddf02886cbe665d67ca750750196ea5bf524b10b ("PCI: iova RB tree setup tweak"). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: mark gross <mgross@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01Fix pci_unmap_addr() et al on i386.David Woodhouse1-1/+1
We can run a 32-bit kernel on boxes with an IOMMU, so we need pci_unmap_addr() etc. to work -- without it, drivers will leak mappings. To be honest, this whole thing looks like it's more pain than it's worth; I'm half inclined to remove the no-op #else case altogether. But this is the minimal fix, which just does the right thing if CONFIG_DMAR is set. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org [ for 2.6.30 ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01elf: fix one check-after-useAmerigo Wang1-2/+2
Check before use it. Signed-off-by: WANG Cong <amwang@redhat.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-01intel-iommu: Make iommu=pt work on i386 tooDavid Woodhouse1-1/+1
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-01Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds13-406/+294
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: cfq-iosched: remove redundant check for NULL cfqq in cfq_set_request() blocK: Restore barrier support for md and probably other virtual devices. block: get rid of queue-private command filter block: Create bip slabs with embedded integrity vectors cfq-iosched: get rid of the need for __GFP_NOFAIL in cfq_find_alloc_queue() cfq-iosched: move cfqq initialization out of cfq_find_alloc_queue() Trivial typo fixes in Documentation/block/data-integrity.txt.
2009-07-01Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds7-48/+84
* 'for-linus' of git://neil.brown.name/md: md: use interruptible wait when duration is controlled by userspace. md/raid5: suspend shouldn't affect read requests. md: tidy up error paths in md_alloc md: fix error path when duplicate name is found on md device creation. md: avoid dereferencing NULL pointer when accessing suspend_* sysfs attributes. md: Use new topology calls to indicate alignment and I/O sizes
2009-07-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds30-145/+235
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits) Revert "ipv4: arp announce, arp_proxy and windows ip conflict verification" igb: return PCI_ERS_RESULT_DISCONNECT on permanent error e1000e: io_error_detected callback should return PCI_ERS_RESULT_DISCONNECT e1000: return PCI_ERS_RESULT_DISCONNECT on permanent error e1000: fix unmap bug igb: fix unmap length bug ixgbe: fix unmap length bug ixgbe: Fix link capabilities during adapter resets ixgbe: Fix device capabilities of 82599 single speed fiber NICs. ixgbe: Fix SFP log messages usbnet: Remove private stats structure usbnet: Use netdev stats structure smsc95xx: Use netdev stats structure rndis_host: Use netdev stats structure net1080: Use netdev stats structure dm9601: Use netdev stats structure cdc_eem: Use netdev stats structure ipv4: Fix fib_trie rebalancing, part 3 bnx2x: Fix the behavior of ethtool when ONBOOT=no sctp: xmit sctp packet always return no route error ...
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