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linux-headers-6.8.0-60
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View File Name :
blk-cgroup.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _BLK_CGROUP_H #define _BLK_CGROUP_H /* * Common Block IO controller cgroup interface * * Based on ideas and code from CFQ, CFS and BFQ: * Copyright (C) 2003 Jens Axboe <axboe@kernel.dk> * * Copyright (C) 2008 Fabio Checconi <fabio@gandalf.sssup.it> * Paolo Valente <paolo.valente@unimore.it> * * Copyright (C) 2009 Vivek Goyal <vgoyal@redhat.com> * Nauman Rafique <nauman@google.com> */ #include <linux/types.h> struct bio; struct cgroup_subsys_state; struct gendisk; #define FC_APPID_LEN 129 #ifdef CONFIG_BLK_CGROUP extern struct cgroup_subsys_state * const blkcg_root_css; void blkcg_schedule_throttle(struct gendisk *disk, bool use_memdelay); void blkcg_maybe_throttle_current(void); bool blk_cgroup_congested(void); void blkcg_pin_online(struct cgroup_subsys_state *blkcg_css); void blkcg_unpin_online(struct cgroup_subsys_state *blkcg_css); struct list_head *blkcg_get_cgwb_list(struct cgroup_subsys_state *css); struct cgroup_subsys_state *bio_blkcg_css(struct bio *bio); #else /* CONFIG_BLK_CGROUP */ #define blkcg_root_css ((struct cgroup_subsys_state *)ERR_PTR(-EINVAL)) static inline void blkcg_maybe_throttle_current(void) { } static inline bool blk_cgroup_congested(void) { return false; } static inline struct cgroup_subsys_state *bio_blkcg_css(struct bio *bio) { return NULL; } #endif /* CONFIG_BLK_CGROUP */ int blkcg_set_fc_appid(char *app_id, u64 cgrp_id, size_t app_id_len); char *blkcg_get_fc_appid(struct bio *bio); #endif /* _BLK_CGROUP_H */