From a3166c51702bb00b8f8b84022090cbab8f37be1a Mon Sep 17 00:00:00 2001 From: Yu Kuai Date: Thu, 9 May 2024 20:11:07 +0800 Subject: blk-throttle: delay initialization until configuration Other cgroup policy like bfq, iocost are lazy-initialized when they are configured for the first time for the device, but blk-throttle is initialized unconditionally from blkcg_init_disk(). Delay initialization of blk-throttle as well, to save some cpu and memory overhead if it's not configured. Noted that once it's initialized, it can't be destroyed until disk removal, even if it's disabled. Signed-off-by: Yu Kuai Link: https://lore.kernel.org/r/20240509121107.3195568-3-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe --- block/blk-sysfs.c | 1 - 1 file changed, 1 deletion(-) (limited to 'block/blk-sysfs.c') diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 8796c350b33d..f0f9314ab65c 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -807,7 +807,6 @@ int blk_register_queue(struct gendisk *disk) blk_queue_flag_set(QUEUE_FLAG_REGISTERED, q); wbt_enable_default(disk); - blk_throtl_register(disk); /* Now everything is ready and send out KOBJ_ADD uevent */ kobject_uevent(&disk->queue_kobj, KOBJ_ADD); -- cgit v1.2.3