From d366e7ec41882791c970dfb7c67b737be8c3a174 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 1 Apr 2012 14:38:44 -0700 Subject: [PATCH] blkcg: pass around pd->pdata instead of pd itself in prfill functions Now that all conf and stat fields are moved into policy specific blkio_policy_data->pdata areas, there's no reason to use blkio_policy_data itself in prfill functions. Pass around @pd->pdata instead of @pd. Signed-off-by: Tejun Heo --- block/blk-cgroup.c | 33 +++++++++++++++------------------ block/blk-cgroup.h | 6 +++--- block/blk-throttle.c | 21 +++++++++------------ block/cfq-iosched.c | 14 ++++++-------- 4 files changed, 33 insertions(+), 41 deletions(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index c0e239b8455e..7de19d7954c7 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -359,7 +359,7 @@ static const char *blkg_dev_name(struct blkio_group *blkg) * cftype->read_seq_string method. */ void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, - u64 (*prfill)(struct seq_file *, struct blkg_policy_data *, int), + u64 (*prfill)(struct seq_file *, void *, int), int pol, int data, bool show_total) { struct blkio_group *blkg; @@ -369,7 +369,7 @@ void blkcg_print_blkgs(struct seq_file *sf, struct blkio_cgroup *blkcg, spin_lock_irq(&blkcg->lock); hlist_for_each_entry(blkg, n, &blkcg->blkg_list, blkcg_node) if (blkg->pd[pol]) - total += prfill(sf, blkg->pd[pol], data); + total += prfill(sf, blkg->pd[pol]->pdata, data); spin_unlock_irq(&blkcg->lock); if (show_total) @@ -380,14 +380,14 @@ EXPORT_SYMBOL_GPL(blkcg_print_blkgs); /** * __blkg_prfill_u64 - prfill helper for a single u64 value * @sf: seq_file to print to - * @pd: policy data of interest + * @pdata: policy private data of interest * @v: value to print * - * Print @v to @sf for the device assocaited with @pd. + * Print @v to @sf for the device assocaited with @pdata. */ -u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v) +u64 __blkg_prfill_u64(struct seq_file *sf, void *pdata, u64 v) { - const char *dname = blkg_dev_name(pd->blkg); + const char *dname = blkg_dev_name(pdata_to_blkg(pdata)); if (!dname) return 0; @@ -400,12 +400,12 @@ EXPORT_SYMBOL_GPL(__blkg_prfill_u64); /** * __blkg_prfill_rwstat - prfill helper for a blkg_rwstat * @sf: seq_file to print to - * @pd: policy data of interest + * @pdata: policy private data of interest * @rwstat: rwstat to print * - * Print @rwstat to @sf for the device assocaited with @pd. + * Print @rwstat to @sf for the device assocaited with @pdata. */ -u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, +u64 __blkg_prfill_rwstat(struct seq_file *sf, void *pdata, const struct blkg_rwstat *rwstat) { static const char *rwstr[] = { @@ -414,7 +414,7 @@ u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, [BLKG_RWSTAT_SYNC] = "Sync", [BLKG_RWSTAT_ASYNC] = "Async", }; - const char *dname = blkg_dev_name(pd->blkg); + const char *dname = blkg_dev_name(pdata_to_blkg(pdata)); u64 v; int i; @@ -430,19 +430,16 @@ u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, return v; } -static u64 blkg_prfill_stat(struct seq_file *sf, struct blkg_policy_data *pd, - int off) +static u64 blkg_prfill_stat(struct seq_file *sf, void *pdata, int off) { - return __blkg_prfill_u64(sf, pd, - blkg_stat_read((void *)pd->pdata + off)); + return __blkg_prfill_u64(sf, pdata, blkg_stat_read(pdata + off)); } -static u64 blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, - int off) +static u64 blkg_prfill_rwstat(struct seq_file *sf, void *pdata, int off) { - struct blkg_rwstat rwstat = blkg_rwstat_read((void *)pd->pdata + off); + struct blkg_rwstat rwstat = blkg_rwstat_read(pdata + off); - return __blkg_prfill_rwstat(sf, pd, &rwstat); + return __blkg_prfill_rwstat(sf, pdata, &rwstat); } /* print blkg_stat specified by BLKCG_STAT_PRIV() */ diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index a77ab1ac53a7..c930895bfac9 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -126,10 +126,10 @@ 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), + u64 (*prfill)(struct seq_file *, void *, 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, +u64 __blkg_prfill_u64(struct seq_file *sf, void *pdata, u64 v); +u64 __blkg_prfill_rwstat(struct seq_file *sf, void *pdata, const struct blkg_rwstat *rwstat); int blkcg_print_stat(struct cgroup *cgrp, struct cftype *cft, struct seq_file *sf); diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 004964bb6fdd..bd6dbfe1e4e9 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -924,10 +924,9 @@ throtl_schedule_delayed_work(struct throtl_data *td, unsigned long delay) } } -static u64 tg_prfill_cpu_rwstat(struct seq_file *sf, - struct blkg_policy_data *pd, int off) +static u64 tg_prfill_cpu_rwstat(struct seq_file *sf, void *pdata, int off) { - struct throtl_grp *tg = (void *)pd->pdata; + struct throtl_grp *tg = pdata; struct blkg_rwstat rwstat = { }, tmp; int i, cpu; @@ -939,7 +938,7 @@ static u64 tg_prfill_cpu_rwstat(struct seq_file *sf, rwstat.cnt[i] += tmp.cnt[i]; } - return __blkg_prfill_rwstat(sf, pd, &rwstat); + return __blkg_prfill_rwstat(sf, pdata, &rwstat); } /* print per-cpu blkg_rwstat specified by BLKCG_STAT_PRIV() */ @@ -954,24 +953,22 @@ static int tg_print_cpu_rwstat(struct cgroup *cgrp, struct cftype *cft, return 0; } -static u64 tg_prfill_conf_u64(struct seq_file *sf, struct blkg_policy_data *pd, - int off) +static u64 tg_prfill_conf_u64(struct seq_file *sf, void *pdata, int off) { - u64 v = *(u64 *)((void *)pd->pdata + off); + u64 v = *(u64 *)(pdata + off); if (v == -1) return 0; - return __blkg_prfill_u64(sf, pd, v); + return __blkg_prfill_u64(sf, pdata, v); } -static u64 tg_prfill_conf_uint(struct seq_file *sf, struct blkg_policy_data *pd, - int off) +static u64 tg_prfill_conf_uint(struct seq_file *sf, void *pdata, int off) { - unsigned int v = *(unsigned int *)((void *)pd->pdata + off); + unsigned int v = *(unsigned int *)(pdata + off); if (v == -1) return 0; - return __blkg_prfill_u64(sf, pd, v); + return __blkg_prfill_u64(sf, pdata, v); } static int tg_print_conf_u64(struct cgroup *cgrp, struct cftype *cft, diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index adab10de6eea..fd505f721f61 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1368,14 +1368,13 @@ static void cfq_link_cfqq_cfqg(struct cfq_queue *cfqq, struct cfq_group *cfqg) cfqg_get(cfqg); } -static u64 cfqg_prfill_weight_device(struct seq_file *sf, - struct blkg_policy_data *pd, int off) +static u64 cfqg_prfill_weight_device(struct seq_file *sf, void *pdata, int off) { - struct cfq_group *cfqg = (void *)pd->pdata; + struct cfq_group *cfqg = pdata; if (!cfqg->dev_weight) return 0; - return __blkg_prfill_u64(sf, pd, cfqg->dev_weight); + return __blkg_prfill_u64(sf, pdata, cfqg->dev_weight); } static int cfqg_print_weight_device(struct cgroup *cgrp, struct cftype *cft, @@ -1443,10 +1442,9 @@ static int cfq_set_weight(struct cgroup *cgrp, struct cftype *cft, u64 val) } #ifdef CONFIG_DEBUG_BLK_CGROUP -static u64 cfqg_prfill_avg_queue_size(struct seq_file *sf, - struct blkg_policy_data *pd, int off) +static u64 cfqg_prfill_avg_queue_size(struct seq_file *sf, void *pdata, int off) { - struct cfq_group *cfqg = (void *)pd->pdata; + struct cfq_group *cfqg = pdata; u64 samples = blkg_stat_read(&cfqg->stats.avg_queue_size_samples); u64 v = 0; @@ -1454,7 +1452,7 @@ static u64 cfqg_prfill_avg_queue_size(struct seq_file *sf, v = blkg_stat_read(&cfqg->stats.avg_queue_size_sum); do_div(v, samples); } - __blkg_prfill_u64(sf, pd, v); + __blkg_prfill_u64(sf, pdata, v); return 0; } -- 2.39.5