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author | Christoph Hellwig <hch@lst.de> | 2023-02-03 16:03:51 +0100 |
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committer | Jens Axboe <axboe@kernel.dk> | 2023-02-03 08:20:05 -0700 |
commit | 0bc65bd41dfd2f75b9f38812326d767db5cd0663 (patch) | |
tree | cc6b7d9f04feee9172f879c6640b024b7fc682fe /block/blk-wbt.h | |
parent | 958f29654747a54f2272eb478e493eb97f492e06 (diff) | |
download | linux-0bc65bd41dfd2f75b9f38812326d767db5cd0663.tar.gz linux-0bc65bd41dfd2f75b9f38812326d767db5cd0663.tar.bz2 linux-0bc65bd41dfd2f75b9f38812326d767db5cd0663.zip |
blk-wbt: move private information from blk-wbt.h to blk-wbt.c
A large part of blk-wbt.h is only used in blk-wbt.c, so move it there.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230203150400.3199230-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-wbt.h')
-rw-r--r-- | block/blk-wbt.h | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/block/blk-wbt.h b/block/blk-wbt.h index b673da41a867..ba6cca5849a6 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -2,92 +2,6 @@ #ifndef WB_THROTTLE_H #define WB_THROTTLE_H -#include <linux/kernel.h> -#include <linux/atomic.h> -#include <linux/wait.h> -#include <linux/timer.h> -#include <linux/ktime.h> - -#include "blk-stat.h" -#include "blk-rq-qos.h" - -enum wbt_flags { - WBT_TRACKED = 1, /* write, tracked for throttling */ - WBT_READ = 2, /* read */ - WBT_KSWAPD = 4, /* write, from kswapd */ - WBT_DISCARD = 8, /* discard */ - - WBT_NR_BITS = 4, /* number of bits */ -}; - -enum { - WBT_RWQ_BG = 0, - WBT_RWQ_KSWAPD, - WBT_RWQ_DISCARD, - WBT_NUM_RWQ, -}; - -/* - * If current state is WBT_STATE_ON/OFF_DEFAULT, it can be covered to any other - * state, if current state is WBT_STATE_ON/OFF_MANUAL, it can only be covered - * to WBT_STATE_OFF/ON_MANUAL. - */ -enum { - WBT_STATE_ON_DEFAULT = 1, /* on by default */ - WBT_STATE_ON_MANUAL = 2, /* on manually by sysfs */ - WBT_STATE_OFF_DEFAULT = 3, /* off by default */ - WBT_STATE_OFF_MANUAL = 4, /* off manually by sysfs */ -}; - -struct rq_wb { - /* - * Settings that govern how we throttle - */ - unsigned int wb_background; /* background writeback */ - unsigned int wb_normal; /* normal writeback */ - - short enable_state; /* WBT_STATE_* */ - - /* - * Number of consecutive periods where we don't have enough - * information to make a firm scale up/down decision. - */ - unsigned int unknown_cnt; - - u64 win_nsec; /* default window size */ - u64 cur_win_nsec; /* current window size */ - - struct blk_stat_callback *cb; - - u64 sync_issue; - void *sync_cookie; - - unsigned int wc; - - unsigned long last_issue; /* last non-throttled issue */ - unsigned long last_comp; /* last non-throttled comp */ - unsigned long min_lat_nsec; - struct rq_qos rqos; - struct rq_wait rq_wait[WBT_NUM_RWQ]; - struct rq_depth rq_depth; -}; - -static inline struct rq_wb *RQWB(struct rq_qos *rqos) -{ - return container_of(rqos, struct rq_wb, rqos); -} - -static inline unsigned int wbt_inflight(struct rq_wb *rwb) -{ - unsigned int i, ret = 0; - - for (i = 0; i < WBT_NUM_RWQ; i++) - ret += atomic_read(&rwb->rq_wait[i].inflight); - - return ret; -} - - #ifdef CONFIG_BLK_WBT int wbt_init(struct gendisk *disk); |