diff options
Diffstat (limited to 'block/bfq.h')
| -rw-r--r-- | block/bfq.h | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/block/bfq.h b/block/bfq.h index 00142fcce..ea1e7d852 100644 --- a/block/bfq.h +++ b/block/bfq.h @@ -1,5 +1,5 @@ /* - * BFQ-v8r3 for 4.8.0: data structures and common functions prototypes. + * BFQ-v8r4 for 4.8.0: data structures and common functions prototypes. * * Based on ideas and code from CFQ: * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk> @@ -298,6 +298,10 @@ struct bfq_queue { * last transition from idle to backlogged. */ unsigned long service_from_backlogged; + /* + * Value of wr start time when switching to soft rt + */ + unsigned long wr_start_at_switch_to_srt; unsigned long split_time; /* time of last split */ }; @@ -352,6 +356,13 @@ struct bfq_io_cq { * with another cooperating queue. */ bool was_in_burst_list; + + /* + * Similar to previous fields: save wr information. + */ + unsigned long saved_wr_coeff; + unsigned long saved_last_wr_start_finish; + unsigned long saved_wr_start_at_switch_to_srt; }; enum bfq_device_speed { @@ -431,14 +442,32 @@ struct bfq_data { /* on-disk position of the last served request */ sector_t last_position; + /* time of last request completion (ns) */ + u64 last_completion; + + /* time of first rq dispatch in current observation interval (ns) */ + u64 first_dispatch; + /* time of last rq dispatch in current observation interval (ns) */ + u64 last_dispatch; + /* beginning of the last budget */ ktime_t last_budget_start; /* beginning of the last idle slice */ ktime_t last_idling_start; - /* number of samples used to calculate @peak_rate */ + + /* number of samples in current observation interval */ int peak_rate_samples; - /* peak transfer rate observed for a budget */ - u64 peak_rate; + /* num of samples of seq dispatches in current observation interval */ + u32 sequential_samples; + /* total num of sectors transferred in current observation interval */ + u64 tot_sectors_dispatched; + /* max rq size seen during current observation interval (sectors) */ + u32 last_rq_max_size; + /* time elapsed from first dispatch in current observ. interval (us) */ + u64 delta_from_first; + /* current estimate of device peak rate */ + u32 peak_rate; + /* maximum budget allotted to a bfq_queue before rescheduling */ int bfq_max_budget; @@ -457,7 +486,7 @@ struct bfq_data { /* maximum allowed backward seek */ unsigned int bfq_back_max; /* maximum idling time */ - u64 bfq_slice_idle; + u32 bfq_slice_idle; /* last time CLASS_IDLE was served */ u64 bfq_class_idle_last_service; |