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* Merge branch 'work.splice_read' of ↵Linus Torvalds2016-10-071-2/+393
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull VFS splice updates from Al Viro: "There's a bunch of branches this cycle, both mine and from other folks and I'd rather send pull requests separately. This one is the conversion of ->splice_read() to ITER_PIPE iov_iter (and introduction of such). Gets rid of a lot of code in fs/splice.c and elsewhere; there will be followups, but these are for the next cycle... Some pipe/splice-related cleanups from Miklos in the same branch as well" * 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: pipe: fix comment in pipe_buf_operations pipe: add pipe_buf_steal() helper pipe: add pipe_buf_confirm() helper pipe: add pipe_buf_release() helper pipe: add pipe_buf_get() helper relay: simplify relay_file_read() switch default_file_splice_read() to use of pipe-backed iov_iter switch generic_file_splice_read() to use of ->read_iter() new iov_iter flavour: pipe-backed fuse_dev_splice_read(): switch to add_to_pipe() skb_splice_bits(): get rid of callback new helper: add_to_pipe() splice: lift pipe_lock out of splice_to_pipe() splice: switch get_iovec_page_array() to iov_iter splice_to_pipe(): don't open-code wakeup_pipe_readers() consistent treatment of EFAULT on O_DIRECT read/write
| * pipe: add pipe_buf_release() helperMiklos Szeredi2016-10-051-3/+1
| | | | | | | | | | Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * new iov_iter flavour: pipe-backedAl Viro2016-10-051-2/+395
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | iov_iter variant for passing data into pipe. copy_to_iter() copies data into page(s) it has allocated and stuffs them into the pipe; copy_page_to_iter() stuffs there a reference to the page given to it. Both will try to coalesce if possible. iov_iter_zero() is similar to copy_to_iter(); iov_iter_get_pages() and friends will do as copy_to_iter() would have and return the pages where the data would've been copied. iov_iter_advance() will truncate everything past the spot it has advanced to. New primitive: iov_iter_pipe(), used for initializing those. pipe should be locked all along. Running out of space acts as fault would for iovec-backed ones; in other words, giving it to ->read_iter() may result in short read if the pipe overflows, or -EFAULT if it happens with nothing copied there. In other words, ->read_iter() on those acts pretty much like ->splice_read(). Moreover, all generic_file_splice_read() users, as well as many other ->splice_read() instances can be switched to that scheme - that'll happen in the next commit. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-blockLinus Torvalds2016-10-073-0/+352
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block layer updates from Jens Axboe: "This is the main pull request for block layer changes in 4.9. As mentioned at the last merge window, I've changed things up and now do just one branch for core block layer changes, and driver changes. This avoids dependencies between the two branches. Outside of this main pull request, there are two topical branches coming as well. This pull request contains: - A set of fixes, and a conversion to blk-mq, of nbd. From Josef. - Set of fixes and updates for lightnvm from Matias, Simon, and Arnd. Followup dependency fix from Geert. - General fixes from Bart, Baoyou, Guoqing, and Linus W. - CFQ async write starvation fix from Glauber. - Add supprot for delayed kick of the requeue list, from Mike. - Pull out the scalable bitmap code from blk-mq-tag.c and make it generally available under the name of sbitmap. Only blk-mq-tag uses it for now, but the blk-mq scheduling bits will use it as well. From Omar. - bdev thaw error progagation from Pierre. - Improve the blk polling statistics, and allow the user to clear them. From Stephen. - Set of minor cleanups from Christoph in block/blk-mq. - Set of cleanups and optimizations from me for block/blk-mq. - Various nvme/nvmet/nvmeof fixes from the various folks" * 'for-4.9/block' of git://git.kernel.dk/linux-block: (54 commits) fs/block_dev.c: return the right error in thaw_bdev() nvme: Pass pointers, not dma addresses, to nvme_get/set_features() nvme/scsi: Remove power management support nvmet: Make dsm number of ranges zero based nvmet: Use direct IO for writes admin-cmd: Added smart-log command support. nvme-fabrics: Add host_traddr options field to host infrastructure nvme-fabrics: revise host transport option descriptions nvme-fabrics: rework nvmf_get_address() for variable options nbd: use BLK_MQ_F_BLOCKING blkcg: Annotate blkg_hint correctly cfq: fix starvation of asynchronous writes blk-mq: add flag for drivers wanting blocking ->queue_rq() blk-mq: remove non-blocking pass in blk_mq_map_request blk-mq: get rid of manual run of queue with __blk_mq_run_hw_queue() block: export bio_free_pages to other modules lightnvm: propagate device_add() error code lightnvm: expose device geometry through sysfs lightnvm: control life of nvm_dev in driver blk-mq: register device instead of disk ...
| * | sbitmap: initialize weight to zeroColin Ian King2016-09-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Variable weight is not being initialized to zero before it is used to compute the weight sum. Ensure it is initialized to zero. Found with static analysis with cppcheck: [lib/sbitmap.c:177]: (error) Uninitialized variable: weight Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: don't update the allocation hint on clear after resizeOmar Sandoval2016-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we have a bunch of high-numbered bits allocated and then we resize the struct sbitmap_queue, when those bits get cleared, we'll update the hint and then have to re-randomize it repeatedly. Avoid that by checking that the cleared bit is still a valid hint. No measurable performance difference in the common case. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: re-initialize allocation hints after resizeOmar Sandoval2016-09-171-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After a struct sbitmap_queue is resized smaller, the allocation hints may still be set to bits beyond the new depth of the bitmap. This means that, for example, if the number of blk-mq tags is reduced through sysfs, more requests than the nominal queue depth may be in flight. It's tempting to fix this at resize time by doing a one-time reinitialization of the hints, but this can race with __sbitmap_queue_get() updating the hint. Instead, check the hint before we use it. This caused no measurable performance difference in my synthetic benchmarks. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: randomize initial alloc_hint valuesOmar Sandoval2016-09-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to get good cache behavior from a sbitmap, we want each CPU to stick to its own cacheline(s) as much as possible. This might happen naturally as the bitmap gets filled up and the alloc_hint values spread out, but we really want this behavior from the start. blk-mq apparently intended to do this, but the code to do this was never wired up. Get rid of the dead code and make it part of the sbitmap library. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: push alloc policy into sbitmap_queueOmar Sandoval2016-09-171-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | Again, there's no point in passing this in every time. Make it part of struct sbitmap_queue and clean up the API. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: push per-cpu last_tag into sbitmap_queueOmar Sandoval2016-09-171-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocating your own per-cpu allocation hint separately makes for an awkward API. Instead, allocate the per-cpu hint as part of the struct sbitmap_queue. There's no point for a struct sbitmap_queue without the cache, but you can still use a bare struct sbitmap. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | sbitmap: allocate wait queues on a specific nodeOmar Sandoval2016-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The original bt_alloc() we converted from was using kzalloc(), not kzalloc_node(), to allocate the wait queues. This was probably an oversight, so fix it for sbitmap_queue_init_node(). Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | blk-mq: abstract tag allocation out into sbitmap libraryOmar Sandoval2016-09-173-0/+306
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a generally useful data structure, so make it available to anyone else who might want to use it. It's also a nice cleanup separating the allocation logic from the rest of the tag handling logic. The code is behind a new Kconfig option, CONFIG_SBITMAP, which is only selected by CONFIG_BLOCK for now. This should be a complete noop functionality-wise. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2016-10-071-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial updates from Jiri Kosina: "The usual rocket science from the trivial tree" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: tracing/syscalls: fix multiline in error message text lib/Kconfig.debug: fix DEBUG_SECTION_MISMATCH description doc: vfs: fix fadvise() sycall name x86/entry: spell EBX register correctly in documentation securityfs: fix securityfs_create_dir comment irq: Fix typo in tracepoint.xml
| * | | lib/Kconfig.debug: fix DEBUG_SECTION_MISMATCH descriptionUwe Kleine-König2016-09-291-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | Merge tag 'md/4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/mdLinus Torvalds2016-10-077-5/+988
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MD updates from Shaohua Li: "This update includes: - new AVX512 instruction based raid6 gen/recovery algorithm - a couple of md-cluster related bug fixes - fix a potential deadlock - set nonrotational bit for raid array with SSD - set correct max_hw_sectors for raid5/6, which hopefuly can improve performance a little bit - other minor fixes" * tag 'md/4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: md: set rotational bit raid6/test/test.c: bug fix: Specify aligned(alignment) attributes to the char arrays raid5: handle register_shrinker failure raid5: fix to detect failure of register_shrinker md: fix a potential deadlock md/bitmap: fix wrong cleanup raid5: allow arbitrary max_hw_sectors lib/raid6: Add AVX512 optimized xor_syndrome functions lib/raid6/test/Makefile: Add avx512 gen_syndrome and recovery functions lib/raid6: Add AVX512 optimized recovery functions lib/raid6: Add AVX512 optimized gen_syndrome functions md-cluster: make resync lock also could be interruptted md-cluster: introduce dlm_lock_sync_interruptible to fix tasks hang md-cluster: convert the completion to wait queue md-cluster: protect md_find_rdev_nr_rcu with rcu lock md-cluster: clean related infos of cluster md: changes for MD_STILL_CLOSED flag md-cluster: remove some unnecessary dlm_unlock_sync md-cluster: use FORCEUNLOCK in lockres_free md-cluster: call md_kick_rdev_from_array once ack failed
| * | | | raid6/test/test.c: bug fix: Specify aligned(alignment) attributes to the ↵Gayatri Kammela2016-09-261-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | char arrays Specifying the aligned attributes to the char data[NDISKS][PAGE_SIZE], char recovi[PAGE_SIZE] and char recovi[PAGE_SIZE] arrays, so that all malloc memory is page boundary aligned. Without these alignment attributes, the test causes a segfault in userspace when the NDISKS are changed to 4 from 16. The RAID stripes will be page aligned anyway, so we want to test what the kernel actually will execute. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Reviewed-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
| * | | | lib/raid6: Add AVX512 optimized xor_syndrome functionsGayatri Kammela2016-09-211-3/+278
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimize RAID6 xor_syndrome functions to take advantage of the 512-bit ZMM integer instructions introduced in AVX512. AVX512 optimized xor_syndrome functions, which is simply based on sse2.c written by hpa. The patch was tested and benchmarked before submission on a hardware that has AVX512 flags to support such instructions Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jim Kukunas <james.t.kukunas@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Megha Dey <megha.dey@linux.intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
| * | | | lib/raid6/test/Makefile: Add avx512 gen_syndrome and recovery functionsGayatri Kammela2016-09-211-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding avx512 gen_syndrome and recovery functions so as to allow code to be compiled and tested successfully in userspace. This patch is tested in userspace and improvement in performace is observed. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jim Kukunas <james.t.kukunas@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Megha Dey <megha.dey@linux.intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
| * | | | lib/raid6: Add AVX512 optimized recovery functionsGayatri Kammela2016-09-213-1/+392
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimize RAID6 recovery functions to take advantage of the 512-bit ZMM integer instructions introduced in AVX512. AVX512 optimized recovery functions, which is simply based on recov_avx2.c written by Jim Kukunas This patch was tested and benchmarked before submission on a hardware that has AVX512 flags to support such instructions Cc: Jim Kukunas <james.t.kukunas@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Megha Dey <megha.dey@linux.intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
| * | | | lib/raid6: Add AVX512 optimized gen_syndrome functionsGayatri Kammela2016-09-214-1/+314
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimize RAID6 gen_syndrom functions to take advantage of the 512-bit ZMM integer instructions introduced in AVX512. AVX512 optimized gen_syndrom functions, which is simply based on avx2.c written by Yuanhan Liu and sse2.c written by hpa. The patch was tested and benchmarked before submission on a hardware that has AVX512 flags to support such instructions Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jim Kukunas <james.t.kukunas@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Megha Dey <megha.dey@linux.intel.com> Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
* | | | | Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2016-10-061-2/+50
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull dmaengine updates from Vinod Koul: "This is bit large pile of code which bring in some nice additions: - Error reporting: we have added a new mechanism for users of dmaenegine to register a callback_result which tells them the result of the dma transaction. Right now only one user (ntb) is using it. - As we discussed on KS mailing list and pointed out NO_IRQ has no place in kernel, this also remove NO_IRQ from dmaengine subsystem (both arm and ppc users) - Support for IOMMU slave transfers and its implementation for arm. - To get better build coverage, enable COMPILE_TEST for bunch of driver, and fix the warning and sparse complaints on these. - Apart from above, usual updates spread across drivers" * tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (169 commits) async_pq_val: fix DMA memory leak dmaengine: virt-dma: move function declarations dmaengine: omap-dma: Enable burst and data pack for SG DT: dmaengine: rcar-dmac: document R8A7743/5 support dmaengine: fsldma: Unmap region obtained by of_iomap dmaengine: jz4780: fix resource leaks on error exit return dma-debug: fix ia64 build, use PHYS_PFN dmaengine: coh901318: fix integer overflow when shifting more than 32 places dmaengine: edma: avoid uninitialized variable use dma-mapping: fix m32r build warning dma-mapping: fix ia64 build, use PHYS_PFN dmaengine: ti-dma-crossbar: enable COMPILE_TEST dmaengine: omap-dma: enable COMPILE_TEST dmaengine: edma: enable COMPILE_TEST dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage dmaengine: ti-dma-crossbar: Correct type for of_find_property() third parameter dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs dmaengine: edma: Rename set_bits and remove unused clear_bits helper dmaengine: edma: Use correct type for of_find_property() third parameter dmaengine: edma: Fix of_device_id data parameter usage (legacy vs TPCC) ...
| * | | | | dma-debug: fix ia64 build, use PHYS_PFNNiklas Söderlund2016-09-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kbuild test robot reports: lib/dma-debug.c: In function 'debug_dma_map_resource': >> lib/dma-debug.c:1541:16: error: implicit declaration of function '__phys_to_pfn' [-Werror=implicit-function-declaration] entry->pfn = __phys_to_pfn(addr); ^~~~~~~~~~~~~ ia64 does not provide __phys_to_pfn(), use the PHYS_PFN() alias. Fixes: 0e74b34dfc3318bf ("dma-debug: add support for resource mappings") Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | | | | dma-debug: add support for resource mappingsNiklas Söderlund2016-09-261-2/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A MMIO mapped resource can not be represented by a struct page so a new debug type is needed to handle this. This patch add such type and functionality to add/remove entries and how to translate them to a physical address. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2016-10-055-79/+326
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) BBR TCP congestion control, from Neal Cardwell, Yuchung Cheng and co. at Google. https://lwn.net/Articles/701165/ 2) Do TCP Small Queues for retransmits, from Eric Dumazet. 3) Support collect_md mode for all IPV4 and IPV6 tunnels, from Alexei Starovoitov. 4) Allow cls_flower to classify packets in ip tunnels, from Amir Vadai. 5) Support DSA tagging in older mv88e6xxx switches, from Andrew Lunn. 6) Support GMAC protocol in iwlwifi mwm, from Ayala Beker. 7) Support ndo_poll_controller in mlx5, from Calvin Owens. 8) Move VRF processing to an output hook and allow l3mdev to be loopback, from David Ahern. 9) Support SOCK_DESTROY for UDP sockets. Also from David Ahern. 10) Congestion control in RXRPC, from David Howells. 11) Support geneve RX offload in ixgbe, from Emil Tantilov. 12) When hitting pressure for new incoming TCP data SKBs, perform a partial rathern than a full purge of the OFO queue (which could be huge). From Eric Dumazet. 13) Convert XFRM state and policy lookups to RCU, from Florian Westphal. 14) Support RX network flow classification to igb, from Gangfeng Huang. 15) Hardware offloading of eBPF in nfp driver, from Jakub Kicinski. 16) New skbmod packet action, from Jamal Hadi Salim. 17) Remove some inefficiencies in snmp proc output, from Jia He. 18) Add FIB notifications to properly propagate route changes to hardware which is doing forwarding offloading. From Jiri Pirko. 19) New dsa driver for qca8xxx chips, from John Crispin. 20) Implement RFC7559 ipv6 router solicitation backoff, from Maciej Żenczykowski. 21) Add L3 mode to ipvlan, from Mahesh Bandewar. 22) Support 802.1ad in mlx4, from Moshe Shemesh. 23) Support hardware LRO in mediatek driver, from Nelson Chang. 24) Add TC offloading to mlx5, from Or Gerlitz. 25) Convert various drivers to ethtool ksettings interfaces, from Philippe Reynes. 26) TX max rate limiting for cxgb4, from Rahul Lakkireddy. 27) NAPI support for ath10k, from Rajkumar Manoharan. 28) Support XDP in mlx5, from Rana Shahout and Saeed Mahameed. 29) UDP replicast support in TIPC, from Richard Alpe. 30) Per-queue statistics for qed driver, from Sudarsana Reddy Kalluru. 31) Support BQL in thunderx driver, from Sunil Goutham. 32) TSO support in alx driver, from Tobias Regnery. 33) Add stream parser engine and use it in kcm. 34) Support async DHCP replies in ipconfig module, from Uwe Kleine-König. 35) DSA port fast aging for mv88e6xxx driver, from Vivien Didelot. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1715 commits) mlxsw: switchx2: Fix misuse of hard_header_len mlxsw: spectrum: Fix misuse of hard_header_len net/faraday: Stop NCSI device on shutdown net/ncsi: Introduce ncsi_stop_dev() net/ncsi: Rework the channel monitoring net/ncsi: Allow to extend NCSI request properties net/ncsi: Rework request index allocation net/ncsi: Don't probe on the reserved channel ID (0x1f) net/ncsi: Introduce NCSI_RESERVED_CHANNEL net/ncsi: Avoid unused-value build warning from ia64-linux-gcc net: Add netdev all_adj_list refcnt propagation to fix panic net: phy: Add Edge-rate driver for Microsemi PHYs. vmxnet3: Wake queue from reset work i40e: avoid NULL pointer dereference and recursive errors on early PCI error qed: Add RoCE ll2 & GSI support qed: Add support for memory registeration verbs qed: Add support for QP verbs qed: PD,PKEY and CQ verb support qed: Add support for RoCE hw init qede: Add qedr framework ...
| * \ \ \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-10-022-5/+5
| |\ \ \ \ \ \ | | | |_|_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | Three sets of overlapping changes. Nothing serious. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | lib: clean up put_cpu_var usageShaohua Li2016-09-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | put_cpu_var takes the percpu data, not the data returned from get_cpu_var. This doesn't change the behavior. Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Shaohua Li <shli@fb.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-09-231-22/+2
| |\ \ \ \ \ \ | | | |_|/ / / | | |/| | | |
| * | | | | | lib/win_minmax: windowed min or max estimatorNeal Cardwell2016-09-212-1/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit introduces a generic library to estimate either the min or max value of a time-varying variable over a recent time window. This is code originally from Kathleen Nichols. The current form of the code is from Van Jacobson. A single struct minmax_sample will track the estimated windowed-max value of the series if you call minmax_running_max() or the estimated windowed-min value of the series if you call minmax_running_min(). Nearly equivalent code is already in place for minimum RTT estimation in the TCP stack. This commit extracts that code and generalizes it to handle both min and max. Moving the code here reduces the footprint and complexity of the TCP code base and makes the filter generally available for other parts of the codebase, including an upcoming TCP congestion control module. This library works well for time series where the measurements are smoothly increasing or decreasing. Signed-off-by: Van Jacobson <vanj@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Nandita Dukkipati <nanditad@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | rhashtable: Add rhlist interfaceHerbert Xu2016-09-201-52/+206
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The insecure_elasticity setting is an ugly wart brought out by users who need to insert duplicate objects (that is, distinct objects with identical keys) into the same table. In fact, those users have a much bigger problem. Once those duplicate objects are inserted, they don't have an interface to find them (unless you count the walker interface which walks over the entire table). Some users have resorted to doing a manual walk over the hash table which is of course broken because they don't handle the potential existence of multiple hash tables. The result is that they will break sporadically when they encounter a hash table resize/rehash. This patch provides a way out for those users, at the expense of an extra pointer per object. Essentially each object is now a list of objects carrying the same key. The hash table will only see the lists so nothing changes as far as rhashtable is concerned. To use this new interface, you need to insert a struct rhlist_head into your objects instead of struct rhash_head. While the hash table is unchanged, for type-safety you'll need to use struct rhltable instead of struct rhashtable. All the existing interfaces have been duplicated for rhlist, including the hash table walker. One missing feature is nulls marking because AFAIK the only potential user of it does not need duplicate objects. Should anyone need this it shouldn't be too hard to add. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | test_bpf: fix the dummy skb after dissector changesJakub Kicinski2016-09-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d5709f7ab776 ("flow_dissector: For stripped vlan, get vlan info from skb->vlan_tci") made flow dissector look at vlan_proto when vlan is present. Since test_bpf sets skb->vlan_tci to ~0 (including VLAN_TAG_PRESENT) we have to populate skb->vlan_proto. Fixes false negative on test #24: test_bpf: #24 LD_PAYLOAD_OFF jited:0 175 ret 0 != 42 FAIL (1 times) Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-09-124-38/+16
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/mediatek/mtk_eth_soc.c drivers/net/ethernet/qlogic/qed/qed_dcbx.c drivers/net/phy/Kconfig All conflicts were cases of overlapping commits. Signed-off-by: David S. Miller <davem@davemloft.net>
| * \ \ \ \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller2016-09-061-3/+7
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for your net-next tree. Most relevant updates are the removal of per-conntrack timers to use a workqueue/garbage collection approach instead from Florian Westphal, the hash and numgen expression for nf_tables from Laura Garcia, updates on nf_tables hash set to honor the NLM_F_EXCL flag, removal of ip_conntrack sysctl and many other incremental updates on our Netfilter codebase. More specifically, they are: 1) Retrieve only 4 bytes to fetch ports in case of non-linear skb transport area in dccp, sctp, tcp, udp and udplite protocol conntrackers, from Gao Feng. 2) Missing whitespace on error message in physdev match, from Hangbin Liu. 3) Skip redundant IPv4 checksum calculation in nf_dup_ipv4, from Liping Zhang. 4) Add nf_ct_expires() helper function and use it, from Florian Westphal. 5) Replace opencoded nf_ct_kill() call in IPVS conntrack support, also from Florian. 6) Rename nf_tables set implementation to nft_set_{name}.c 7) Introduce the hash expression to allow arbitrary hashing of selector concatenations, from Laura Garcia Liebana. 8) Remove ip_conntrack sysctl backward compatibility code, this code has been around for long time already, and we have two interfaces to do this already: nf_conntrack sysctl and ctnetlink. 9) Use nf_conntrack_get_ht() helper function whenever possible, instead of opencoding fetch of hashtable pointer and size, patch from Liping Zhang. 10) Add quota expression for nf_tables. 11) Add number generator expression for nf_tables, this supports incremental and random generators that can be combined with maps, very useful for load balancing purpose, again from Laura Garcia Liebana. 12) Fix a typo in a debug message in FTP conntrack helper, from Colin Ian King. 13) Introduce a nft_chain_parse_hook() helper function to parse chain hook configuration, this is used by a follow up patch to perform better chain update validation. 14) Add rhashtable_lookup_get_insert_key() to rhashtable and use it from the nft_set_hash implementation to honor the NLM_F_EXCL flag. 15) Missing nulls check in nf_conntrack from nf_conntrack_tuple_taken(), patch from Florian Westphal. 16) Don't use the DYING bit to know if the conntrack event has been already delivered, instead a state variable to track event re-delivery states, also from Florian. 17) Remove the per-conntrack timer, use the workqueue approach that was discussed during the NFWS, from Florian Westphal. 18) Use the netlink conntrack table dump path to kill stale entries, again from Florian. 19) Add a garbage collector to get rid of stale conntracks, from Florian. 20) Reschedule garbage collector if eviction rate is high. 21) Get rid of the __nf_ct_kill_acct() helper. 22) Use ARPHRD_ETHER instead of hardcoded 1 from ARP logger. 23) Make nf_log_set() interface assertive on unsupported families. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | | | | | rhashtable: add rhashtable_lookup_get_insert_key()Pablo Neira Ayuso2016-08-261-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch modifies __rhashtable_insert_fast() so it returns the existing object that clashes with the one that you want to insert. In case the object is successfully inserted, NULL is returned. Otherwise, you get an error via ERR_PTR(). This patch adapts the existing callers of __rhashtable_insert_fast() so they handle this new logic, and it adds a new rhashtable_lookup_get_insert_key() interface to fetch this existing object. nf_tables needs this change to improve handling of EEXIST cases via honoring the NLM_F_EXCL flag and by checking if the data part of the mapping matches what we have. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2016-08-301-3/+4
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All three conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | | | | | rhashtable: Remove GFP flag from rhashtable_walk_initHerbert Xu2016-08-191-28/+18
| | |_|_|_|_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697 ("rhashtable: accept GFP flags in rhashtable_walk_init") added a GFP flag argument to rhashtable_walk_init because some users wish to use the walker in an unsleepable context. In fact we don't need to allocate memory in rhashtable_walk_init at all. The walker is always paired with an iterator so we could just stash ourselves there. This patch does that by introducing a new enter function to replace the existing init function. This way we don't have to churn all the existing users again. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | | | | | mm: filemap: don't plant shadow entries without radix tree nodeJohannes Weiner2016-10-051-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the underflow checks were added to workingset_node_shadow_dec(), they triggered immediately: kernel BUG at ./include/linux/swap.h:276! invalid opcode: 0000 [#1] SMP Modules linked in: isofs usb_storage fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6 soundcore wmi acpi_als pinctrl_sunrisepoint kfifo_buf tpm_tis industrialio acpi_pad pinctrl_intel tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt CPU: 0 PID: 20929 Comm: blkid Not tainted 4.8.0-rc8-00087-gbe67d60ba944 #1 Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016 task: ffff8faa93ecd940 task.stack: ffff8faa7f478000 RIP: page_cache_tree_insert+0xf1/0x100 Call Trace: __add_to_page_cache_locked+0x12e/0x270 add_to_page_cache_lru+0x4e/0xe0 mpage_readpages+0x112/0x1d0 blkdev_readpages+0x1d/0x20 __do_page_cache_readahead+0x1ad/0x290 force_page_cache_readahead+0xaa/0x100 page_cache_sync_readahead+0x3f/0x50 generic_file_read_iter+0x5af/0x740 blkdev_read_iter+0x35/0x40 __vfs_read+0xe1/0x130 vfs_read+0x96/0x130 SyS_read+0x55/0xc0 entry_SYSCALL_64_fastpath+0x13/0x8f Code: 03 00 48 8b 5d d8 65 48 33 1c 25 28 00 00 00 44 89 e8 75 19 48 83 c4 18 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 41 bd ef ff ff ff eb d7 <0f> 0b e8 88 68 ef ff 0f 1f 84 00 RIP page_cache_tree_insert+0xf1/0x100 This is a long-standing bug in the way shadow entries are accounted in the radix tree nodes. The shrinker needs to know when radix tree nodes contain only shadow entries, no pages, so node->count is split in half to count shadows in the upper bits and pages in the lower bits. Unfortunately, the radix tree implementation doesn't know of this and assumes all entries are in node->count. When there is a shadow entry directly in root->rnode and the tree is later extended, the radix tree implementation will copy that entry into the new node and and bump its node->count, i.e. increases the page count bits. Once the shadow gets removed and we subtract from the upper counter, node->count underflows and triggers the warning. Afterwards, without node->count reaching 0 again, the radix tree node is leaked. Limit shadow entries to when we have actual radix tree nodes and can count them properly. That means we lose the ability to detect refaults from files that had only the first page faulted in at eviction time. Fixes: 449dd6984d0e ("mm: keep page cache radix tree nodes in check") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2016-10-046-0/+308
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "The new features and main improvements in this merge for v4.9 - Support for the UBSAN sanitizer - Set HAVE_EFFICIENT_UNALIGNED_ACCESS, it improves the code in some places - Improvements for the in-kernel fpu code, in particular the overhead for multiple consecutive in kernel fpu users is recuded - Add a SIMD implementation for the RAID6 gen and xor operations - Add RAID6 recovery based on the XC instruction - The PCI DMA flush logic has been improved to increase the speed of the map / unmap operations - The time synchronization code has seen some updates And bug fixes all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits) s390/con3270: fix insufficient space padding s390/con3270: fix use of uninitialised data MAINTAINERS: update DASD maintainer s390/cio: fix accidental interrupt enabling during resume s390/dasd: add missing \n to end of dev_err messages s390/config: Enable config options for Docker s390/dasd: make query host access interruptible s390/dasd: fix panic during offline processing s390/dasd: fix hanging offline processing s390/pci_dma: improve lazy flush for unmap s390/pci_dma: split dma_update_trans s390/pci_dma: improve map_sg s390/pci_dma: simplify dma address calculation s390/pci_dma: remove dma address range check iommu/s390: simplify registration of I/O address translation parameters s390: migrate exception table users off module.h and onto extable.h s390: export header for CLP ioctl s390/vmur: fix irq pointer dereference in int handler s390/dasd: add missing KOBJ_CHANGE event for unformatted devices s390: enable UBSAN ...
| * | | | | | | | | ubsan: allow to disable the null sanitizerChristian Borntraeger2016-09-201-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures use a hardware defined structure at address zero. Checking for a null pointer will result in many ubsan reports. Allow users to disable the null sanitizer. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | | | | | RAID/s390: provide raid6 recovery optimizationMartin Schwidefsky2016-09-013-1/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The XC instruction can be used to improve the speed of the raid6 recovery. The loops now operate on blocks of 256 bytes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | | | | | RAID/s390: add SIMD implementation for raid6 gen/xorMartin Schwidefsky2016-08-294-0/+178
| |/ / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using vector registers is slightly faster: raid6: vx128x8 gen() 19705 MB/s raid6: vx128x8 xor() 11886 MB/s raid6: using algorithm vx128x8 gen() 19705 MB/s raid6: .... xor() 11886 MB/s, rmw enabled vs the software algorithms: raid6: int64x1 gen() 3018 MB/s raid6: int64x1 xor() 1429 MB/s raid6: int64x2 gen() 4661 MB/s raid6: int64x2 xor() 3143 MB/s raid6: int64x4 gen() 5392 MB/s raid6: int64x4 xor() 3509 MB/s raid6: int64x8 gen() 4441 MB/s raid6: int64x8 xor() 3207 MB/s raid6: using algorithm int64x4 gen() 5392 MB/s raid6: .... xor() 3509 MB/s, rmw enabled Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | | | | | | Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds2016-10-032-23/+49
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug updates from Thomas Gleixner: "Yet another batch of cpu hotplug core updates and conversions: - Provide core infrastructure for multi instance drivers so the drivers do not have to keep custom lists. - Convert custom lists to the new infrastructure. The block-mq custom list conversion comes through the block tree and makes the diffstat tip over to more lines removed than added. - Handle unbalanced hotplug enable/disable calls more gracefully. - Remove the obsolete CPU_STARTING/DYING notifier support. - Convert another batch of notifier users. The relayfs changes which conflicted with the conversion have been shipped to me by Andrew. The remaining lot is targeted for 4.10 so that we finally can remove the rest of the notifiers" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits) cpufreq: Fix up conversion to hotplug state machine blk/mq: Reserve hotplug states for block multiqueue x86/apic/uv: Convert to hotplug state machine s390/mm/pfault: Convert to hotplug state machine mips/loongson/smp: Convert to hotplug state machine mips/octeon/smp: Convert to hotplug state machine fault-injection/cpu: Convert to hotplug state machine padata: Convert to hotplug state machine cpufreq: Convert to hotplug state machine ACPI/processor: Convert to hotplug state machine virtio scsi: Convert to hotplug state machine oprofile/timer: Convert to hotplug state machine block/softirq: Convert to hotplug state machine lib/irq_poll: Convert to hotplug state machine x86/microcode: Convert to hotplug state machine sh/SH-X3 SMP: Convert to hotplug state machine ia64/mca: Convert to hotplug state machine ARM/OMAP/wakeupgen: Convert to hotplug state machine ARM/shmobile: Convert to hotplug state machine arm64/FP/SIMD: Convert to hotplug state machine ...
| * | | | | | | | | fault-injection/cpu: Convert to hotplug state machineSebastian Andrzej Siewior2016-09-191-6/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Install the callbacks via the state machine. This is just a temporary vehicle to keep the interface working for now, It'll be replaced by the sysfs interface which allows to step through the hotplug state machine step by step. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160906170457.32393-15-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | | | | | | | lib/irq_poll: Convert to hotplug state machineSebastian Andrzej Siewior2016-09-191-17/+9
| |/ / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Install the callbacks via the state machine. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160906170457.32393-8-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | | | | | | Merge branch 'x86-asm-for-linus' of ↵Linus Torvalds2016-10-032-8/+43
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull low-level x86 updates from Ingo Molnar: "In this cycle this topic tree has become one of those 'super topics' that accumulated a lot of changes: - Add CONFIG_VMAP_STACK=y support to the core kernel and enable it on x86 - preceded by an array of changes. v4.8 saw preparatory changes in this area already - this is the rest of the work. Includes the thread stack caching performance optimization. (Andy Lutomirski) - switch_to() cleanups and all around enhancements. (Brian Gerst) - A large number of dumpstack infrastructure enhancements and an unwinder abstraction. The secret long term plan is safe(r) live patching plus maybe another attempt at debuginfo based unwinding - but all these current bits are standalone enhancements in a frame pointer based debug environment as well. (Josh Poimboeuf) - More __ro_after_init and const annotations. (Kees Cook) - Enable KASLR for the vmemmap memory region. (Thomas Garnier)" [ The virtually mapped stack changes are pretty fundamental, and not x86-specific per se, even if they are only used on x86 right now. ] * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits) x86/asm: Get rid of __read_cr4_safe() thread_info: Use unsigned long for flags x86/alternatives: Add stack frame dependency to alternative_call_2() x86/dumpstack: Fix show_stack() task pointer regression x86/dumpstack: Remove dump_trace() and related callbacks x86/dumpstack: Convert show_trace_log_lvl() to use the new unwinder oprofile/x86: Convert x86_backtrace() to use the new unwinder x86/stacktrace: Convert save_stack_trace_*() to use the new unwinder perf/x86: Convert perf_callchain_kernel() to use the new unwinder x86/unwind: Add new unwind interface and implementations x86/dumpstack: Remove NULL task pointer convention fork: Optimize task creation by caching two thread stacks per CPU if CONFIG_VMAP_STACK=y sched/core: Free the stack early if CONFIG_THREAD_INFO_IN_TASK lib/syscall: Pin the task stack in collect_syscall() x86/process: Pin the target stack in get_wchan() x86/dumpstack: Pin the target stack when dumping it kthread: Pin the stack via try_get_task_stack()/put_task_stack() in to_live_kthread() function sched/core: Add try_get_task_stack() and put_task_stack() x86/entry/64: Fix a minor comment rebase error iommu/amd: Don't put completion-wait semaphore on stack ...
| * \ \ \ \ \ \ \ \ Merge branch 'x86/urgent' into x86/asmThomas Gleixner2016-09-302-5/+5
| |\ \ \ \ \ \ \ \ \ | | | |_|_|_|_|/ / / | | |/| | | | | | | | | | | | | | | | | Get the cr4 fixes so we can apply the final cleanup
| * | | | | | | | | Merge branch 'linus' into x86/asm, to pick up fixesIngo Molnar2016-09-201-22/+2
| |\ \ \ \ \ \ \ \ \ | | | |_|_|_|_|/ / / | | |/| | | | | | | | | | | | | | | | | Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | | | | | | lib/syscall: Pin the task stack in collect_syscall()Andy Lutomirski2016-09-161-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This will avoid a potential read-after-free if collect_syscall() (e.g. /proc/PID/syscall) is called on an exiting task. Reported-by: Jann Horn <jann@thejh.net> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/0bfd8e6d4729c97745d3781a29610a33d0a8091d.1474003868.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | | | | | | Merge branch 'linus' into x86/asm, to pick up recent fixesIngo Molnar2016-09-155-41/+20
| |\ \ \ \ \ \ \ \ \ | | | |_|_|_|_|/ / / | | |/| | | | | | | | | | | | | | | | | Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | | | | | | dma-api: Teach the "DMA-from-stack" check about vmapped stacksAndy Lutomirski2016-08-241-6/+30
| | |_|_|/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we're using CONFIG_VMAP_STACK=y and we manage to point an sg entry at the stack, then either the sg page will be in highmem or sg_virt() will return the direct-map alias. In neither case will the existing check_for_stack() implementation realize that it's a stack page. Fix it by explicitly checking for stack pages. This has no effect by itself. It's broken out for ease of review. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/448460622731312298bf19dcbacb1606e75de7a9.1470907718.git.luto@kernel.org [ Minor edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | | | | | | Merge branch 'efi-core-for-linus' of ↵Linus Torvalds2016-10-031-1/+1
|\ \ \ \ \ \ \ \ \ | |_|_|_|/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI updates from Ingo Molnar: "Main changes in this cycle were: - Refactor the EFI memory map code into architecture neutral files and allow drivers to permanently reserve EFI boot services regions on x86, as well as ARM/arm64. (Matt Fleming) - Add ARM support for the EFI ESRT driver. (Ard Biesheuvel) - Make the EFI runtime services and efivar API interruptible by swapping spinlocks for semaphores. (Sylvain Chouleur) - Provide the EFI identity mapping for kexec which allows kexec to work on SGI/UV platforms with requiring the "noefi" kernel command line parameter. (Alex Thorlton) - Add debugfs node to dump EFI page tables on arm64. (Ard Biesheuvel) - Merge the EFI test driver being carried out of tree until now in the FWTS project. (Ivan Hu) - Expand the list of flags for classifying EFI regions as "RAM" on arm64 so we align with the UEFI spec. (Ard Biesheuvel) - Optimise out the EFI mixed mode if it's unsupported (CONFIG_X86_32) or disabled (CONFIG_EFI_MIXED=n) and switch the early EFI boot services function table for direct calls, alleviating us from having to maintain the custom function table. (Lukas Wunner) - Miscellaneous cleanups and fixes" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) x86/efi: Round EFI memmap reservations to EFI_PAGE_SIZE x86/efi: Allow invocation of arbitrary boot services x86/efi: Optimize away setup_gop32/64 if unused x86/efi: Use kmalloc_array() in efi_call_phys_prolog() efi/arm64: Treat regions with WT/WC set but WB cleared as memory efi: Add efi_test driver for exporting UEFI runtime service interfaces x86/efi: Defer efi_esrt_init until after memblock_x86_fill efi/arm64: Add debugfs node to dump UEFI runtime page tables x86/efi: Remove unused find_bits() function fs/efivarfs: Fix double kfree() in error path x86/efi: Map in physical addresses in efi_map_region_fixed lib/ucs2_string: Speed up ucs2_utf8size() firmware-gsmi: Delete an unnecessary check before the function call "dma_pool_destroy" x86/efi: Initialize status to ensure garbage is not returned on small size efi: Replace runtime services spinlock with semaphore efi: Don't use spinlocks for efi vars efi: Use a file local lock for efivars efi/arm*: esrt: Add missing call to efi_esrt_init() efi/esrt: Use memremap not ioremap to access ESRT table in memory x86/efi-bgrt: Use efi_mem_reserve() to avoid copying image data ...
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