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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-29 11:51:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-29 11:51:49 -0800
commit0a4b6e2f80aad46fb55a5cf7b1664c0aef030ee0 (patch)
treecefccd67dc1f27bb45830f6b8065dd4a1c05e83b /block/bfq-iosched.h
parent9697e9da84299d0d715d515dd2cc48f1eceb277d (diff)
parent796baeeef85a40b3495a907fb7425086e7010102 (diff)
downloadlinux-next-0a4b6e2f80aad46fb55a5cf7b1664c0aef030ee0.tar.gz
Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe: "This is the main pull request for block IO related changes for the 4.16 kernel. Nothing major in this pull request, but a good amount of improvements and fixes all over the map. This contains: - BFQ improvements, fixes, and cleanups from Angelo, Chiara, and Paolo. - Support for SMR zones for deadline and mq-deadline from Damien and Christoph. - Set of fixes for bcache by way of Michael Lyle, including fixes from himself, Kent, Rui, Tang, and Coly. - Series from Matias for lightnvm with fixes from Hans Holmberg, Javier, and Matias. Mostly centered around pblk, and the removing rrpc 1.2 in preparation for supporting 2.0. - A couple of NVMe pull requests from Christoph. Nothing major in here, just fixes and cleanups, and support for command tracing from Johannes. - Support for blk-throttle for tracking reads and writes separately. From Joseph Qi. A few cleanups/fixes also for blk-throttle from Weiping. - Series from Mike Snitzer that enables dm to register its queue more logically, something that's alwways been problematic on dm since it's a stacked device. - Series from Ming cleaning up some of the bio accessor use, in preparation for supporting multipage bvecs. - Various fixes from Ming closing up holes around queue mapping and quiescing. - BSD partition fix from Richard Narron, fixing a problem where we can't mount newer (10/11) FreeBSD partitions. - Series from Tejun reworking blk-mq timeout handling. The previous scheme relied on atomic bits, but it had races where we would think a request had timed out if it to reused at the wrong time. - null_blk now supports faking timeouts, to enable us to better exercise and test that functionality separately. From me. - Kill the separate atomic poll bit in the request struct. After this, we don't use the atomic bits on blk-mq anymore at all. From me. - sgl_alloc/free helpers from Bart. - Heavily contended tag case scalability improvement from me. - Various little fixes and cleanups from Arnd, Bart, Corentin, Douglas, Eryu, Goldwyn, and myself" * 'for-4.16/block' of git://git.kernel.dk/linux-block: (186 commits) block: remove smart1,2.h nvme: add tracepoint for nvme_complete_rq nvme: add tracepoint for nvme_setup_cmd nvme-pci: introduce RECONNECTING state to mark initializing procedure nvme-rdma: remove redundant boolean for inline_data nvme: don't free uuid pointer before printing it nvme-pci: Suspend queues after deleting them bsg: use pr_debug instead of hand crafted macros blk-mq-debugfs: don't allow write on attributes with seq_operations set nvme-pci: Fix queue double allocations block: Set BIO_TRACE_COMPLETION on new bio during split blk-throttle: use queue_is_rq_based block: Remove kblockd_schedule_delayed_work{,_on}() blk-mq: Avoid that blk_mq_delay_run_hw_queue() introduces unintended delays blk-mq: Rename blk_mq_request_direct_issue() into blk_mq_request_issue_directly() lib/scatterlist: Fix chaining support in sgl_alloc_order() blk-throttle: track read and write request individually block: add bdev_read_only() checks to common helpers block: fail op_is_write() requests to read-only partitions blk-throttle: export io_serviced_recursive, io_service_bytes_recursive ...
Diffstat (limited to 'block/bfq-iosched.h')
-rw-r--r--block/bfq-iosched.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 91c4390903a1..350c39ae2896 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -337,6 +337,11 @@ struct bfq_queue {
* last transition from idle to backlogged.
*/
unsigned long service_from_backlogged;
+ /*
+ * Cumulative service received from the @bfq_queue since its
+ * last transition to weight-raised state.
+ */
+ unsigned long service_from_wr;
/*
* Value of wr start time when switching to soft rt
@@ -344,6 +349,8 @@ struct bfq_queue {
unsigned long wr_start_at_switch_to_srt;
unsigned long split_time; /* time of last split */
+
+ unsigned long first_IO_time; /* time of first I/O for this queue */
};
/**
@@ -627,6 +634,18 @@ struct bfq_data {
struct bfq_io_cq *bio_bic;
/* bfqq associated with the task issuing current bio for merging */
struct bfq_queue *bio_bfqq;
+
+ /*
+ * Cached sbitmap shift, used to compute depth limits in
+ * bfq_update_depths.
+ */
+ unsigned int sb_shift;
+
+ /*
+ * Depth limits used in bfq_limit_depth (see comments on the
+ * function)
+ */
+ unsigned int word_depths[2][2];
};
enum bfqq_state_flags {