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| author | Omar Sandoval <osandov@fb.com> | 2018-05-09 02:08:47 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-05-09 08:33:00 -0600 |
| commit | 934031a12980511c020acf7d91f9035e34d0b5b8 (patch) | |
| tree | 510dde2e8e992a1a7bf4f112de5e2a419ceab823 /block/blk-wbt.c | |
| parent | 782f569774d7000e54ae9d680b0e4cd29b1c7ca3 (diff) | |
| download | lwn-934031a12980511c020acf7d91f9035e34d0b5b8.tar.gz lwn-934031a12980511c020acf7d91f9035e34d0b5b8.zip | |
block: move some wbt helpers to blk-wbt.c
A few helpers are only used from blk-wbt.c, so move them there, and put
wbt_track() behind the CONFIG_BLK_WBT typedef. This is in preparation
for changing how the wbt flags are tracked.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-wbt.c')
| -rw-r--r-- | block/blk-wbt.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index a7a724580033..450cffa85dfb 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -29,6 +29,26 @@ #define CREATE_TRACE_POINTS #include <trace/events/wbt.h> +static inline void wbt_clear_state(struct blk_issue_stat *stat) +{ + stat->stat &= ~BLK_STAT_RES_MASK; +} + +static inline enum wbt_flags wbt_stat_to_mask(struct blk_issue_stat *stat) +{ + return (stat->stat & BLK_STAT_RES_MASK) >> BLK_STAT_RES_SHIFT; +} + +static inline bool wbt_is_tracked(struct blk_issue_stat *stat) +{ + return (stat->stat >> BLK_STAT_RES_SHIFT) & WBT_TRACKED; +} + +static inline bool wbt_is_read(struct blk_issue_stat *stat) +{ + return (stat->stat >> BLK_STAT_RES_SHIFT) & WBT_READ; +} + enum { /* * Default setting, we'll scale up (to 75% of QD max) or down (min 1) |