diff options
| author | Omar Sandoval <osandov@fb.com> | 2016-09-17 01:28:24 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-09-17 08:39:12 -0600 |
| commit | f4a644db86669d938c71f19560aebf69d4720d63 (patch) | |
| tree | 9a3f2df232414fdeae47881639ed1ed77406198a /lib | |
| parent | 40aabb67464d5aad9ca3d2a5fedee56e2ff45aa0 (diff) | |
| download | linux-f4a644db86669d938c71f19560aebf69d4720d63.tar.bz2 | |
sbitmap: push alloc policy into sbitmap_queue
Again, there's no point in passing this in every time. Make it part of
struct sbitmap_queue and clean up the API.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sbitmap.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/sbitmap.c b/lib/sbitmap.c index 1651ad9d5530..be55f744b771 100644 --- a/lib/sbitmap.c +++ b/lib/sbitmap.c @@ -196,7 +196,7 @@ static unsigned int sbq_calc_wake_batch(unsigned int depth) } int sbitmap_queue_init_node(struct sbitmap_queue *sbq, unsigned int depth, - int shift, gfp_t flags, int node) + int shift, bool round_robin, gfp_t flags, int node) { int ret; int i; @@ -225,6 +225,8 @@ int sbitmap_queue_init_node(struct sbitmap_queue *sbq, unsigned int depth, init_waitqueue_head(&sbq->ws[i].wait); atomic_set(&sbq->ws[i].wait_cnt, sbq->wake_batch); } + + sbq->round_robin = round_robin; return 0; } EXPORT_SYMBOL_GPL(sbitmap_queue_init_node); @@ -236,18 +238,18 @@ void sbitmap_queue_resize(struct sbitmap_queue *sbq, unsigned int depth) } EXPORT_SYMBOL_GPL(sbitmap_queue_resize); -int __sbitmap_queue_get(struct sbitmap_queue *sbq, bool round_robin) +int __sbitmap_queue_get(struct sbitmap_queue *sbq) { unsigned int hint; int nr; hint = this_cpu_read(*sbq->alloc_hint); - nr = sbitmap_get(&sbq->sb, hint, round_robin); + nr = sbitmap_get(&sbq->sb, hint, sbq->round_robin); if (nr == -1) { /* If the map is full, a hint won't do us much good. */ this_cpu_write(*sbq->alloc_hint, 0); - } else if (nr == hint || unlikely(round_robin)) { + } else if (nr == hint || unlikely(sbq->round_robin)) { /* Only update the hint if we used it. */ hint = nr + 1; if (hint >= sbq->sb.depth - 1) @@ -304,11 +306,11 @@ static void sbq_wake_up(struct sbitmap_queue *sbq) } void sbitmap_queue_clear(struct sbitmap_queue *sbq, unsigned int nr, - bool round_robin, unsigned int cpu) + unsigned int cpu) { sbitmap_clear_bit(&sbq->sb, nr); sbq_wake_up(sbq); - if (likely(!round_robin)) + if (likely(!sbq->round_robin)) *per_cpu_ptr(sbq->alloc_hint, cpu) = nr; } EXPORT_SYMBOL_GPL(sbitmap_queue_clear); |