diff options
| -rw-r--r-- | block/blk-cgroup.c | 52 | ||||
| -rw-r--r-- | block/blk-cgroup.h | 27 |
2 files changed, 52 insertions, 27 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index b07a501..53976f2 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -11,7 +11,6 @@ * Nauman Rafique <nauman@google.com> */ #include <linux/ioprio.h> -#include <linux/seq_file.h> #include <linux/kdev_t.h> #include <linux/module.h> #include <linux/err.h> @@ -767,10 +766,9 @@ static const char *blkg_dev_name(struct blkio_group *blkg) * This is to be used to construct print functions for * cftype->read_seq_string method. */ -static void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, - u64 (*prfill)(struct seq_file *, - struct blkg_policy_data *, int), - int pol, int data, bool show_total) +void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, + u64 (*prfill)(struct seq_file *, struct blkg_policy_data *, int), + int pol, int data, bool show_total) { struct blkio_group *blkg; struct hlist_node *n; @@ -785,6 +783,7 @@ static void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, if (show_total) seq_printf(sf, "Total %llu\n", (unsigned long long)total); } +EXPORT_SYMBOL_GPL(blkcg_print_blkgs); /** * __blkg_prfill_u64 - prfill helper for a single u64 value @@ -794,8 +793,7 @@ static void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, * * Print @v to @sf for the device assocaited with @pd. */ -static u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, - u64 v) +u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v) { const char *dname = blkg_dev_name(pd->blkg); @@ -805,6 +803,7 @@ static u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, seq_printf(sf, "%s %llu\n", dname, (unsigned long long)v); return v; } +EXPORT_SYMBOL_GPL(__blkg_prfill_u64); /** * __blkg_prfill_rwstat - prfill helper for a blkg_rwstat @@ -814,9 +813,8 @@ static u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, * * Print @rwstat to @sf for the device assocaited with @pd. */ -static u64 __blkg_prfill_rwstat(struct seq_file *sf, - struct blkg_policy_data *pd, - const struct blkg_rwstat *rwstat) +u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, + const struct blkg_rwstat *rwstat) { static const char *rwstr[] = { [BLKG_RWSTAT_READ] = "Read", @@ -856,8 +854,8 @@ static u64 blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, } /* print blkg_stat specified by BLKCG_STAT_PRIV() */ -static int blkcg_print_stat(struct cgroup *cgrp, struct cftype *cft, - struct seq_file *sf) +int blkcg_print_stat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf) { struct blkio_cgroup *blkcg = cgroup_to_blkio_cgroup(cgrp); @@ -866,10 +864,11 @@ static int blkcg_print_stat(struct cgroup *cgrp, struct cftype *cft, BLKCG_STAT_OFF(cft->private), false); return 0; } +EXPORT_SYMBOL_GPL(blkcg_print_stat); /* print blkg_rwstat specified by BLKCG_STAT_PRIV() */ -static int blkcg_print_rwstat(struct cgroup *cgrp, struct cftype *cft, - struct seq_file *sf) +int blkcg_print_rwstat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf) { struct blkio_cgroup *blkcg = cgroup_to_blkio_cgroup(cgrp); @@ -878,6 +877,7 @@ static int blkcg_print_rwstat(struct cgroup *cgrp, struct cftype *cft, BLKCG_STAT_OFF(cft->private), true); return 0; } +EXPORT_SYMBOL_GPL(blkcg_print_rwstat); static u64 blkg_prfill_cpu_stat(struct seq_file *sf, struct blkg_policy_data *pd, int off) @@ -914,8 +914,8 @@ static u64 blkg_prfill_cpu_rwstat(struct seq_file *sf, } /* print per-cpu blkg_stat specified by BLKCG_STAT_PRIV() */ -static int blkcg_print_cpu_stat(struct cgroup *cgrp, struct cftype *cft, - struct seq_file *sf) +int blkcg_print_cpu_stat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf) { struct blkio_cgroup *blkcg = cgroup_to_blkio_cgroup(cgrp); @@ -924,10 +924,11 @@ static int blkcg_print_cpu_stat(struct cgroup *cgrp, struct cftype *cft, BLKCG_STAT_OFF(cft->private), false); return 0; } +EXPORT_SYMBOL_GPL(blkcg_print_cpu_stat); /* print per-cpu blkg_rwstat specified by BLKCG_STAT_PRIV() */ -static int blkcg_print_cpu_rwstat(struct cgroup *cgrp, struct cftype *cft, - struct seq_file *sf) +int blkcg_print_cpu_rwstat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf) { struct blkio_cgroup *blkcg = cgroup_to_blkio_cgroup(cgrp); @@ -936,6 +937,7 @@ static int blkcg_print_cpu_rwstat(struct cgroup *cgrp, struct cftype *cft, BLKCG_STAT_OFF(cft->private), true); return 0; } +EXPORT_SYMBOL_GPL(blkcg_print_cpu_rwstat); #ifdef CONFIG_DEBUG_BLK_CGROUP static u64 blkg_prfill_avg_queue_size(struct seq_file *sf, @@ -964,12 +966,6 @@ static int blkcg_print_avg_queue_size(struct cgroup *cgrp, struct cftype *cft, } #endif /* CONFIG_DEBUG_BLK_CGROUP */ -struct blkg_conf_ctx { - struct gendisk *disk; - struct blkio_group *blkg; - u64 v; -}; - /** * blkg_conf_prep - parse and prepare for per-blkg config update * @blkcg: target block cgroup @@ -981,8 +977,8 @@ struct blkg_conf_ctx { * value. This function returns with RCU read locked and must be paired * with blkg_conf_finish(). */ -static int blkg_conf_prep(struct blkio_cgroup *blkcg, const char *input, - struct blkg_conf_ctx *ctx) +int blkg_conf_prep(struct blkio_cgroup *blkcg, const char *input, + struct blkg_conf_ctx *ctx) __acquires(rcu) { struct gendisk *disk; @@ -1026,6 +1022,7 @@ static int blkg_conf_prep(struct blkio_cgroup *blkcg, const char *input, ctx->v = v; return 0; } +EXPORT_SYMBOL_GPL(blkg_conf_prep); /** * blkg_conf_finish - finish up per-blkg config update @@ -1034,12 +1031,13 @@ static int blkg_conf_prep(struct blkio_cgroup *blkcg, const char *input, * Finish up after per-blkg config update. This function must be paired * with blkg_conf_prep(). */ -static void blkg_conf_finish(struct blkg_conf_ctx *ctx) +void blkg_conf_finish(struct blkg_conf_ctx *ctx) __releases(rcu) { rcu_read_unlock(); put_disk(ctx->disk); } +EXPORT_SYMBOL_GPL(blkg_conf_finish); /* for propio conf */ static u64 blkg_prfill_weight_device(struct seq_file *sf, diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index 108ffbf..361ecfa 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -15,6 +15,7 @@ #include <linux/cgroup.h> #include <linux/u64_stats_sync.h> +#include <linux/seq_file.h> enum blkio_policy_id { BLKIO_POLICY_PROP = 0, /* Proportional Bandwidth division */ @@ -193,6 +194,32 @@ extern void blkg_destroy_all(struct request_queue *q, bool destroy_root); extern void update_root_blkg_pd(struct request_queue *q, enum blkio_policy_id plid); +void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, + u64 (*prfill)(struct seq_file *, struct blkg_policy_data *, int), + int pol, int data, bool show_total); +u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v); +u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, + const struct blkg_rwstat *rwstat); +int blkcg_print_stat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf); +int blkcg_print_rwstat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf); +int blkcg_print_cpu_stat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf); +int blkcg_print_cpu_rwstat(struct cgroup *cgrp, struct cftype *cft, + struct seq_file *sf); + +struct blkg_conf_ctx { + struct gendisk *disk; + struct blkio_group *blkg; + u64 v; +}; + +int blkg_conf_prep(struct blkio_cgroup *blkcg, const char *input, + struct blkg_conf_ctx *ctx); +void blkg_conf_finish(struct blkg_conf_ctx *ctx); + + /** * blkg_to_pdata - get policy private data * @blkg: blkg of interest |
