Contributors: 10
Author Tokens Token Proportion Commits Commit Proportion
Tejun Heo 53 28.19% 10 40.00%
Christoph Hellwig 44 23.40% 7 28.00%
Ming Lei 37 19.68% 1 4.00%
Muneendra Kumar M 26 13.83% 1 4.00%
Vivek Goyal 12 6.38% 1 4.00%
Dennis Zhou 9 4.79% 1 4.00%
Jens Axboe 2 1.06% 1 4.00%
Arianna Avanzini 2 1.06% 1 4.00%
Josef Bacik 2 1.06% 1 4.00%
Greg Kroah-Hartman 1 0.53% 1 4.00%
Total 188 25 


/* 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 request_queue;

#define FC_APPID_LEN              129

#ifdef CONFIG_BLK_CGROUP
extern struct cgroup_subsys_state * const blkcg_root_css;

void blkcg_schedule_throttle(struct request_queue *q, 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 void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) { }
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 */