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2019-10-25block: mtip32xx: Spelling s/configration/configuration/Geert Uytterhoeven1-1/+1
Fix misspelling of "configuration". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-06-29block: mtip32xx: Remove call to memset after dma_alloc_coherentFuqian Huang1-5/+0
In commit af7ddd8a627c ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dma_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-06-05mtip32xx: also set max_segment_size in the deviceChristoph Hellwig1-0/+1
If we only set the max_segment_size on the queue an IOMMU merge might create bigger segments again, so limit the IOMMU merges as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner1-11/+1
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25mtip32xx: remove trim supportChristoph Hellwig1-89/+0
The trim support in mtip32xx has been "temporarily" disabled for 6 years, which is 3/4 of the time the driver even exists in the tree. Remove it as it obviously is dead code now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-03-09Merge tag 'for-5.1/block-20190302' of git://git.kernel.dk/linux-blockLinus Torvalds1-21/+16
Pull block layer updates from Jens Axboe: "Not a huge amount of changes in this round, the biggest one is that we finally have Mings multi-page bvec support merged. Apart from that, this pull request contains: - Small series that avoids quiescing the queue for sysfs changes that match what we currently have (Aleksei) - Series of bcache fixes (via Coly) - Series of lightnvm fixes (via Mathias) - NVMe pull request from Christoph. Nothing major, just SPDX/license cleanups, RR mp policy (Hannes), and little fixes (Bart, Chaitanya). - BFQ series (Paolo) - Save blk-mq cpu -> hw queue mapping, removing a pointer indirection for the fast path (Jianchao) - fops->iopoll() added for async IO polling, this is a feature that the upcoming io_uring interface will use (Christoph, me) - Partition scan loop fixes (Dongli) - mtip32xx conversion from managed resource API (Christoph) - cdrom registration race fix (Guenter) - MD pull from Song, two minor fixes. - Various documentation fixes (Marcos) - Multi-page bvec feature. This brings a lot of nice improvements with it, like more efficient splitting, larger IOs can be supported without growing the bvec table size, and so on. (Ming) - Various little fixes to core and drivers" * tag 'for-5.1/block-20190302' of git://git.kernel.dk/linux-block: (117 commits) block: fix updating bio's front segment size block: Replace function name in string with __func__ nbd: propagate genlmsg_reply return code floppy: remove set but not used variable 'q' null_blk: fix checking for REQ_FUA block: fix NULL pointer dereference in register_disk fs: fix guard_bio_eod to check for real EOD errors blk-mq: use HCTX_TYPE_DEFAULT but not 0 to index blk_mq_tag_set->map block: optimize bvec iteration in bvec_iter_advance block: introduce mp_bvec_for_each_page() for iterating over page block: optimize blk_bio_segment_split for single-page bvec block: optimize __blk_segment_map_sg() for single-page bvec block: introduce bvec_nth_page() iomap: wire up the iopoll method block: add bio_set_polled() helper block: wire up block device iopoll method fs: add an iopoll method to struct file_operations loop: set GENHD_FL_NO_PART_SCAN after blkdev_reread_part() loop: do not print warn message if partition scan is successful block: bounce: make sure that bvec table is updated ...
2019-03-06mm: replace all open encodings for NUMA_NO_NODEAnshuman Khandual1-2/+3
Patch series "Replace all open encodings for NUMA_NO_NODE", v3. All these places for replacement were found by running the following grep patterns on the entire kernel code. Please let me know if this might have missed some instances. This might also have replaced some false positives. I will appreciate suggestions, inputs and review. 1. git grep "nid == -1" 2. git grep "node == -1" 3. git grep "nid = -1" 4. git grep "node = -1" This patch (of 2): At present there are multiple places where invalid node number is encoded as -1. Even though implicitly understood it is always better to have macros in there. Replace these open encodings for an invalid node number with the global macro NUMA_NO_NODE. This helps remove NUMA related assumptions like 'invalid node' from various places redirecting them to a common definition. Link: http://lkml.kernel.org/r/1545127933-10711-2-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> [ixgbe] Acked-by: Jens Axboe <axboe@kernel.dk> [mtip32xx] Acked-by: Vinod Koul <vkoul@kernel.org> [dmaengine.c] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Doug Ledford <dledford@redhat.com> [drivers/infiniband] Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Hans Verkuil <hverkuil@xs4all.nl> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-31mtip32xx: Ń•top abusing the managed resource APIsChristoph Hellwig1-21/+16
The mtip32xx driver uses managed resources for DMA coherent memory and irqs, but then always pairs them with free calls anyway, making the resource tracking rather pointless. Given some DMA allocations are transient anyway, the irq freeing seems to require ordering vs other hardware access the best solution seems to be to stop using the managed resource API entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-12-11mtip32xx: use BLK_STS_DEV_RESOURCE for device resourcesJens Axboe1-2/+2
For cases where we can only fail with IO in-flight, we should be using BLK_STS_DEV_RESOURCE instead of BLK_STS_RESOURCE. The latter refers to system wide resource constraints. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-12-11mtip32xx: avoid using semaphoresArnd Bergmann1-3/+3
The "cmd_slot_unal" semaphore is never used in a blocking way but only as an atomic counter. Change the code to using atomic_dec_if_positive() as a better API. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-15block: don't hold the queue_lock over blk_abort_requestChristoph Hellwig1-4/+1
There is nothing it could synchronize against, so don't go through the pains of acquiring the lock. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xxx: use for_each_sgChristoph Hellwig1-3/+2
Use the proper helper instead of manually iterating the scatterlist, which is broken in the presence of chained S/G lists. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: don't use req->specialChristoph Hellwig1-3/+2
Instead create add to the icmd into struct mtip_cmd which can be unioned with the scatterlist used for the normal I/O path. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: remove mtip_get_int_commandChristoph Hellwig1-17/+7
Merging this function into the only callers makes the code flow easier. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: remove mtip_init_cmd_headerChristoph Hellwig1-29/+15
There isn't much need for this helper - we can just calculate the offset for the command header once late in the submission path and fill out the ctba and ctbau fields there. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: remove __force_bit2intChristoph Hellwig1-20/+13
There is no good excuse not to use proper __le16/32 types. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: return a blk_status_t from mtip_send_trimChristoph Hellwig1-19/+11
This allows for better error propagation and simpler code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: merge mtip_submit_request into mtip_queue_rqChristoph Hellwig1-50/+28
Factor out a new is_stopped helper that matches the existing is_se_active helper, and merge the trivial amount of remaining code into the only caller. This also allows better error handling by returning a BLK_STS_* directly instead of explicitly calling blk_mq_end_request, and moving blk_mq_start_request closer to the actual issue to hardware. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-09mtip32xx: move the blk_rq_map_sg call to mtip_hw_submit_ioChristoph Hellwig1-7/+4
We have all arguments at hand in mtip_hw_submit_io, so keep the rq to sg mapping close to the dma_map_sg call. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-11-08blk-mq-tag: change busy_iter_fn to return whether to continue or notJens Axboe1-3/+6
We have this functionality in sbitmap, but we don't export it in blk-mq for users of the tags busy iteration. This can be useful for stopping the iteration, if the caller doesn't need to find more requests. Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-10-30mtip32xx: clean an indentation issue, remove extraneous tabsColin Ian King1-2/+2
Trivial fix to clean up an indentation issue, remove tabs Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-10-19mtip32xx: fully switch to the generic DMA APIChristoph Hellwig1-29/+18
The mtip32xx used an odd mix of the old PCI and the generic DMA API, so switch it over to the generic API entirely. Note that this also removes a weird fallback to just a 32-bit coherent dma mask if the 64-bit dma mask doesn't work, as that can't even happen. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-28block: genhd: add 'groups' argument to device_add_diskHannes Reinecke1-1/+1
Update device_add_disk() to take an 'groups' argument so that individual drivers can register a device with additional sysfs attributes. This avoids race condition the driver would otherwise have if these groups were to be created with sysfs_add_groups(). Signed-off-by: Martin Wilck <martin.wilck@suse.com> Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-08-26Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds1-23/+6
Pull IDA updates from Matthew Wilcox: "A better IDA API: id = ida_alloc(ida, GFP_xxx); ida_free(ida, id); rather than the cumbersome ida_simple_get(), ida_simple_remove(). The new IDA API is similar to ida_simple_get() but better named. The internal restructuring of the IDA code removes the bitmap preallocation nonsense. I hope the net -200 lines of code is convincing" * 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax: (29 commits) ida: Change ida_get_new_above to return the id ida: Remove old API test_ida: check_ida_destroy and check_ida_alloc test_ida: Convert check_ida_conv to new API test_ida: Move ida_check_max test_ida: Move ida_check_leaf idr-test: Convert ida_check_nomem to new API ida: Start new test_ida module target/iscsi: Allocate session IDs from an IDA iscsi target: fix session creation failure handling drm/vmwgfx: Convert to new IDA API dmaengine: Convert to new IDA API ppc: Convert vas ID allocation to new IDA API media: Convert entity ID allocation to new IDA API ppc: Convert mmu context allocation to new IDA API Convert net_namespace to new IDA API cb710: Convert to new IDA API rsxx: Convert to new IDA API osd: Convert to new IDA API sd: Convert to new IDA API ...
2018-08-22mtip32xx: Convert to new IDA APIMatthew Wilcox1-23/+6
Removes a use of ida_pre_get() and a personalised spinlock. Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2018-08-08drivers/block/mtip32xx: remove the null check for debugfs_remove_recursivezhong jiang1-2/+1
debugfs_remove_recursive has taken null pointer into account. So it is safe to drop the null check before calling the function. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30blk-mq: only iterate over inflight requests in blk_mq_tagset_busy_iterChristoph Hellwig1-10/+2
We already check for started commands in all callbacks, but we should also protect against already completed commands. Do this by taking the checks to common code. Acked-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-29mtip32xx: complete requests from ->timeoutChristoph Hellwig1-1/+2
By completing the request entirely in the driver we can remove the BLK_EH_HANDLED return value and thus the split responsibility between the driver and the block layer that has been causing trouble. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-24block drivers/block: Use octal not symbolic permissionsJoe Perches1-6/+5
Convert the S_<FOO> symbolic permissions to their octal equivalents as using octal and not symbolic permissions is preferred by many as more readable. see: https://lkml.org/lkml/2016/8/2/1945 Done with automated conversion via: $ ./scripts/checkpatch.pl -f --types=SYMBOLIC_PERMS --fix-inplace <files...> Miscellanea: o Wrapped modified multi-line calls to a single line where appropriate o Realign modified multi-line calls to open parenthesis Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-12mtip32xx: don't use block layer bounce buffersChristoph Hellwig1-1/+0
mtip32xx just sets the block bounce limit to the dma mask, which means that the iommu or swiotlb already take care of the bounce buffering, and the block bouncing can be removed. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-10mtip32xx: Fix an error handling path in 'mtip_pci_probe()'Christophe JAILLET1-1/+1
Branch to the right label in the error handling path in order to keep it logical. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-03-09mtip32xx: Use the blk_queue_flag_*() functionsBart Van Assche1-4/+4
Use the blk_queue_flag_*() functions instead of open-coding these. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13mtip32xx: Clean up unused variablesChristos Gkekas1-7/+0
Remove variables that are set but never used. Signed-off-by: Christos Gkekas <chris.gekas@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-10Merge branch 'nvme-4.13' of git://git.infradead.org/nvme into for-linusJens Axboe1-4/+15
Pull followup NVMe (mostly) changes from Sagi: I added the quiesce/unquiesce patches in here as it's easy for me easily apply changes on top. It has accumulated reviews and includes mostly nvme anyway, please tell me if you don't want to take them with this. This includes: - quiesce/unquiesce fixes in nvme and others from me - nvme-fc add create association padding spec updates from James - some more quirking from MKP - nvmet nit cleanup from Max - Fix nvme-rdma racy RDMA completion signalling from Marta - some centralization patches from me - add tagset nr_hw_queues updates on controller resets in nvme drivers from me - nvme-rdma fix resources recycling when doing error recovery from me - minor cleanups in nvme-fc from me
2017-07-06mtip32xx: quiesce request queues to make sure no submissions are inflightSagi Grimberg1-4/+15
Unlike blk_mq_stop_hw_queues, blk_mq_quiesce_queue respects the submission path rcu grace. quiesce the queue before iterating on live tags, or performing device io quiescing. While were at it, verify that the request started in mtip_abort_cmd amd mtip_queue_cmd tag iteration calls. Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-07-05mtip32xx: avoid to read HOST_CAP from HW in .queue_rq()Ming Lei1-2/+2
It is observed reading the register from HW takes a bit long, for example in my box, the following difference of 'perf report --no-children fio ...' can be seen when running I/O: 1) V4.12 without patch + 9.28% fio [mtip32xx] [k] mtip_irq_handler + 8.48% fio [mtip32xx] [k] mtip_init_cmd_header 2) V4.12 with the following patch + 9.14% fio [mtip32xx] [k] mtip_irq_handler ...... + 1.14% fio [mtip32xx] [k] mtip_init_cmd_header IOPS can be increased by ~5% with this patch too. Fixes: a4e84aae8139(mtip32xx: use runtime tag to initialize command header) Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-23mtip32xx: fix up the checking for internal command failureJens Axboe1-17/+4
This fixes up two commits that have touched this driver. The command status field is now a blk_status_t, so we can't check for < 0 and we definitely can't assume it's holding -Exxxx error values. All we care about here is whether ->status is zero or not. Check for that, and remove the various attempts at smart error reporting. Just log to dmesg what command failed, and the blk_status_t value. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: 2a842acab109 ("block: introduce new block status code type") Fixes: 3f5e6a35774c ("mtip32xx: convert internal command issue to block IO path") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-06-09blk-mq: switch ->queue_rq return value to blk_status_tChristoph Hellwig1-9/+8
Use the same values for use for request completion errors as the return value from ->queue_rq. BLK_STS_RESOURCE is special cased to cause a requeue, and all the others are completed as-is. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-06-09block: introduce new block status code typeChristoph Hellwig1-8/+8
Currently we use nornal Linux errno values in the block layer, and while we accept any error a few have overloaded magic meanings. This patch instead introduces a new blk_status_t value that holds block layer specific status codes and explicitly explains their meaning. Helpers to convert from and to the previous special meanings are provided for now, but I suspect we want to get rid of them in the long run - those drivers that have a errno input (e.g. networking) usually get errnos that don't know about the special block layer overloads, and similarly returning them to userspace will usually return somethings that strictly speaking isn't correct for file system operations, but that's left as an exercise for later. For now the set of errors is a very limited set that closely corresponds to the previous overloaded errno values, but there is some low hanging fruite to improve it. blk_status_t (ab)uses the sparse __bitwise annotations to allow for sparse typechecking, so that we can easily catch places passing the wrong values. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-03mtip32xx: convert internal commands to regular block infrastructureJens Axboe1-168/+30
Get rid of the private end_io handlers and data, and just use the regular block IO path for these requests. This removes a lot of redundant code. Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-03mtip32xx: cleanup internal tag assumptionsJens Axboe1-10/+9
We don't decode the internal tag to the proper group or tag indx. This works fine because we have hard wired it as 0 for now, but could break if we get rid of that. Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02blk-mq: update ->init_request and ->exit_request prototypesChristoph Hellwig1-14/+6
Remove the request_idx parameter, which can't be used safely now that we support I/O schedulers with blk-mq. Except for a superflous check in mtip32xx it was unused anyway. Also pass the tag_set instead of just the driver data - this allows drivers to avoid some code duplication in a follow on cleanup. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02Revert "mtip32xx: pass BLK_MQ_F_NO_SCHED"Jens Axboe1-1/+1
This reverts commit 4981d04dd8f1ab19e2cce008da556d7f099b6e68. The driver has been converted to using the proper infrastructure for issuing internal commands. This means it's now safe to use with the scheduling infrastruture, so we can now revert the change that turned off scheduling for mtip32xx. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02mtip32xx: convert internal command issue to block IO pathJens Axboe1-30/+73
The driver special cases certain things for command issue, depending on whether it's an internal command or not. Make the internal commands use the regular infrastructure for issuing IO. Since this is an 8-group souped up AHCI variant, we have to deal with NCQ vs non-queueable commands. Do this from the queue_rq handler, by backing off unless the drive is idle. Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02mtip32xx: abstract out "are any commands active" helperJens Axboe1-10/+18
This is a prep patch for backoff in ->queue_rq() for non-ncq commands. Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02mtip32xx: kill atomic argument to mtip_quiesce_io()Jens Axboe1-15/+5
All callers now pass in GFP_KERNEL, get rid of the argument. Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-02mtip32xx: get rid of 'atomic' argument to mtip_exec_internal_command()Jens Axboe1-105/+43
All callers can safely block. Kill the atomic/block argument, and remove the argument from all callers. Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-01Merge branch 'for-4.12/block' of git://git.kernel.dk/linux-blockLinus Torvalds1-22/+36
Pull block layer updates from Jens Axboe: - Add BFQ IO scheduler under the new blk-mq scheduling framework. BFQ was initially a fork of CFQ, but subsequently changed to implement fairness based on B-WF2Q+, a modified variant of WF2Q. BFQ is meant to be used on desktop type single drives, providing good fairness. From Paolo. - Add Kyber IO scheduler. This is a full multiqueue aware scheduler, using a scalable token based algorithm that throttles IO based on live completion IO stats, similary to blk-wbt. From Omar. - A series from Jan, moving users to separately allocated backing devices. This continues the work of separating backing device life times, solving various problems with hot removal. - A series of updates for lightnvm, mostly from Javier. Includes a 'pblk' target that exposes an open channel SSD as a physical block device. - A series of fixes and improvements for nbd from Josef. - A series from Omar, removing queue sharing between devices on mostly legacy drivers. This helps us clean up other bits, if we know that a queue only has a single device backing. This has been overdue for more than a decade. - Fixes for the blk-stats, and improvements to unify the stats and user windows. This both improves blk-wbt, and enables other users to register a need to receive IO stats for a device. From Omar. - blk-throttle improvements from Shaohua. This provides a scalable framework for implementing scalable priotization - particularly for blk-mq, but applicable to any type of block device. The interface is marked experimental for now. - Bucketized IO stats for IO polling from Stephen Bates. This improves efficiency of polled workloads in the presence of mixed block size IO. - A few fixes for opal, from Scott. - A few pulls for NVMe, including a lot of fixes for NVMe-over-fabrics. From a variety of folks, mostly Sagi and James Smart. - A series from Bart, improving our exposed info and capabilities from the blk-mq debugfs support. - A series from Christoph, cleaning up how handle WRITE_ZEROES. - A series from Christoph, cleaning up the block layer handling of how we track errors in a request. On top of being a nice cleanup, it also shrinks the size of struct request a bit. - Removal of mg_disk and hd (sorry Linus) by Christoph. The former was never used by platforms, and the latter has outlived it's usefulness. - Various little bug fixes and cleanups from a wide variety of folks. * 'for-4.12/block' of git://git.kernel.dk/linux-block: (329 commits) block: hide badblocks attribute by default blk-mq: unify hctx delay_work and run_work block: add kblock_mod_delayed_work_on() blk-mq: unify hctx delayed_run_work and run_work nbd: fix use after free on module unload MAINTAINERS: bfq: Add Paolo as maintainer for the BFQ I/O scheduler blk-mq-sched: alloate reserved tags out of normal pool mtip32xx: use runtime tag to initialize command header scsi: Implement blk_mq_ops.show_rq() blk-mq: Add blk_mq_ops.show_rq() blk-mq: Show operation, cmd_flags and rq_flags names blk-mq: Make blk_flags_show() callers append a newline character blk-mq: Move the "state" debugfs attribute one level down blk-mq: Unregister debugfs attributes earlier blk-mq: Only unregister hctxs for which registration succeeded blk-mq-debugfs: Rename functions for registering and unregistering the mq directory blk-mq: Let blk_mq_debugfs_register() look up the queue name blk-mq: Register <dev>/queue/mq after having registered <dev>/queue ide-pm: always pass 0 error to ide_complete_rq in ide_do_devset ide-pm: always pass 0 error to __blk_end_request_all ..
2017-04-27mtip32xx: use runtime tag to initialize command headerMing Lei1-12/+24
mtip32xx supposes that 'request_idx' passed to .init_request() is tag of the request, and use that as request's tag to initialize command header. After MQ IO scheduler is in, request tag assigned isn't same with the request index anymore, so cause strange hardware failure on mtip32xx, even whole system panic is triggered. This patch fixes the issue by initializing command header via request's real tag. Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-21mtip32xx: fix dereference of stack garbageJens Axboe1-0/+1
We need to get the command payload from the request before we attempt to dereference it. Fixes: 4dda4735c581 ("mtip32xx: add a status field to struct mtip_cmd") Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>