diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2024-03-25 04:59:55 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-04-03 17:10:17 +0200 |
| commit | 688c8b9208356eb5c3fa8047f3e35666f3049a4d (patch) | |
| tree | a09c7eec204439f6eea7ab92788f1a8b0fa822b3 | |
| parent | btrfs use bio_list_merge_init (diff) | |
| download | linux-688c8b9208356eb5c3fa8047f3e35666f3049a4d.tar.xz linux-688c8b9208356eb5c3fa8047f3e35666f3049a4d.zip | |
blk-cgroup: use group allocation/free of per-cpu counters API
Use group allocation/free of per-cpu counters api to accelerate
blkg_rwstat_init/exit() and simplify code.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20240325035955.50019-1-wangkefeng.wang@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-cgroup-rwstat.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/block/blk-cgroup-rwstat.c b/block/blk-cgroup-rwstat.c index 3304e841df7c..a55fb0c53558 100644 --- a/block/blk-cgroup-rwstat.c +++ b/block/blk-cgroup-rwstat.c @@ -9,25 +9,19 @@ int blkg_rwstat_init(struct blkg_rwstat *rwstat, gfp_t gfp) { int i, ret; - for (i = 0; i < BLKG_RWSTAT_NR; i++) { - ret = percpu_counter_init(&rwstat->cpu_cnt[i], 0, gfp); - if (ret) { - while (--i >= 0) - percpu_counter_destroy(&rwstat->cpu_cnt[i]); - return ret; - } + ret = percpu_counter_init_many(rwstat->cpu_cnt, 0, gfp, BLKG_RWSTAT_NR); + if (ret) + return ret; + + for (i = 0; i < BLKG_RWSTAT_NR; i++) atomic64_set(&rwstat->aux_cnt[i], 0); - } return 0; } EXPORT_SYMBOL_GPL(blkg_rwstat_init); void blkg_rwstat_exit(struct blkg_rwstat *rwstat) { - int i; - - for (i = 0; i < BLKG_RWSTAT_NR; i++) - percpu_counter_destroy(&rwstat->cpu_cnt[i]); + percpu_counter_destroy_many(rwstat->cpu_cnt, BLKG_RWSTAT_NR); } EXPORT_SYMBOL_GPL(blkg_rwstat_exit); |