From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f171.google.com ([209.85.216.171]:38096 "EHLO mail-qt0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935450AbeF2TZ5 (ORCPT ); Fri, 29 Jun 2018 15:25:57 -0400 Received: by mail-qt0-f171.google.com with SMTP id c5-v6so8838253qth.5 for ; Fri, 29 Jun 2018 12:25:56 -0700 (PDT) From: Josef Bacik To: axboe@kernel.dk, kernel-team@fb.com, linux-block@vger.kernel.org, akpm@linux-foundation.org, hannes@cmpxchg.org, tj@kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: Josef Bacik Subject: [PATCH 08/14] blk-stat: export helpers for modifying blk_rq_stat Date: Fri, 29 Jun 2018 15:25:36 -0400 Message-Id: <20180629192542.26649-9-josef@toxicpanda.com> In-Reply-To: <20180629192542.26649-1-josef@toxicpanda.com> References: <20180629192542.26649-1-josef@toxicpanda.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: Josef Bacik We need to use blk_rq_stat in the blkcg qos stuff, so export some of these helpers so they can be used by other things. Signed-off-by: Josef Bacik Acked-by: Tejun Heo --- block/blk-stat.c | 16 ++++++++-------- block/blk-stat.h | 4 ++++ 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/block/blk-stat.c b/block/blk-stat.c index 175c143ac5b9..7587b1c3caaf 100644 --- a/block/blk-stat.c +++ b/block/blk-stat.c @@ -17,7 +17,7 @@ struct blk_queue_stats { bool enable_accounting; }; -static void blk_stat_init(struct blk_rq_stat *stat) +void blk_rq_stat_init(struct blk_rq_stat *stat) { stat->min = -1ULL; stat->max = stat->nr_samples = stat->mean = 0; @@ -25,7 +25,7 @@ static void blk_stat_init(struct blk_rq_stat *stat) } /* src is a per-cpu stat, mean isn't initialized */ -static void blk_stat_sum(struct blk_rq_stat *dst, struct blk_rq_stat *src) +void blk_rq_stat_sum(struct blk_rq_stat *dst, struct blk_rq_stat *src) { if (!src->nr_samples) return; @@ -39,7 +39,7 @@ static void blk_stat_sum(struct blk_rq_stat *dst, struct blk_rq_stat *src) dst->nr_samples += src->nr_samples; } -static void __blk_stat_add(struct blk_rq_stat *stat, u64 value) +void blk_rq_stat_add(struct blk_rq_stat *stat, u64 value) { stat->min = min(stat->min, value); stat->max = max(stat->max, value); @@ -69,7 +69,7 @@ void blk_stat_add(struct request *rq, u64 now) continue; stat = &get_cpu_ptr(cb->cpu_stat)[bucket]; - __blk_stat_add(stat, value); + blk_rq_stat_add(stat, value); put_cpu_ptr(cb->cpu_stat); } rcu_read_unlock(); @@ -82,15 +82,15 @@ static void blk_stat_timer_fn(struct timer_list *t) int cpu; for (bucket = 0; bucket < cb->buckets; bucket++) - blk_stat_init(&cb->stat[bucket]); + blk_rq_stat_init(&cb->stat[bucket]); for_each_online_cpu(cpu) { struct blk_rq_stat *cpu_stat; cpu_stat = per_cpu_ptr(cb->cpu_stat, cpu); for (bucket = 0; bucket < cb->buckets; bucket++) { - blk_stat_sum(&cb->stat[bucket], &cpu_stat[bucket]); - blk_stat_init(&cpu_stat[bucket]); + blk_rq_stat_sum(&cb->stat[bucket], &cpu_stat[bucket]); + blk_rq_stat_init(&cpu_stat[bucket]); } } @@ -143,7 +143,7 @@ void blk_stat_add_callback(struct request_queue *q, cpu_stat = per_cpu_ptr(cb->cpu_stat, cpu); for (bucket = 0; bucket < cb->buckets; bucket++) - blk_stat_init(&cpu_stat[bucket]); + blk_rq_stat_init(&cpu_stat[bucket]); } spin_lock(&q->stats->lock); diff --git a/block/blk-stat.h b/block/blk-stat.h index 78399cdde9c9..f4a1568e81a4 100644 --- a/block/blk-stat.h +++ b/block/blk-stat.h @@ -159,4 +159,8 @@ static inline void blk_stat_activate_msecs(struct blk_stat_callback *cb, mod_timer(&cb->timer, jiffies + msecs_to_jiffies(msecs)); } +void blk_rq_stat_add(struct blk_rq_stat *, u64); +void blk_rq_stat_sum(struct blk_rq_stat *, struct blk_rq_stat *); +void blk_rq_stat_init(struct blk_rq_stat *); + #endif -- 2.14.3