From: Josef Bacik <josef@toxicpanda.com>
To: axboe@kernel.dk, kernel-team@fb.com, linux-block@vger.kernel.org,
akpm@linux-foundation.org, linux-mm@kvack.org,
hannes@cmpxchg.org, linux-kernel@vger.kernel.org, tj@kernel.org,
linux-fsdevel@vger.kernel.org
Cc: Josef Bacik <jbacik@fb.com>
Subject: [PATCH 08/13] blk-stat: export helpers for modifying blk_rq_stat
Date: Tue, 29 May 2018 17:17:19 -0400 [thread overview]
Message-ID: <20180529211724.4531-9-josef@toxicpanda.com> (raw)
In-Reply-To: <20180529211724.4531-1-josef@toxicpanda.com>
From: Josef Bacik <jbacik@fb.com>
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 <jbacik@fb.com>
---
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
next prev parent reply other threads:[~2018-05-29 21:17 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-29 21:17 [PATCH 00/13] Introdue io.latency io controller for cgroups Josef Bacik
2018-05-29 21:17 ` [PATCH 01/13] block: add bi_blkg to the bio " Josef Bacik
2018-05-30 15:49 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 02/13] block: introduce bio_issue_as_root_blkg Josef Bacik
2018-05-30 15:53 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 03/13] blk-cgroup: allow controllers to output their own stats Josef Bacik
2018-05-30 15:54 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 04/13] blk: introduce REQ_SWAP Josef Bacik
2018-05-30 15:58 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 05/13] swap,blkcg: issue swap io with the appropriate context Josef Bacik
2018-05-30 13:06 ` Johannes Weiner
2018-05-30 16:05 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 06/13] blkcg: add generic throttling mechanism Josef Bacik
2018-05-30 13:11 ` Johannes Weiner
2018-05-30 16:26 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 07/13] memcontrol: schedule throttling if we are congested Josef Bacik
2018-05-30 14:15 ` Johannes Weiner
2018-05-29 21:17 ` Josef Bacik [this message]
2018-05-30 16:31 ` [PATCH 08/13] blk-stat: export helpers for modifying blk_rq_stat Tejun Heo
2018-05-29 21:17 ` [PATCH 09/13] blk-rq-qos: refactor out common elements of blk-wbt Josef Bacik
2018-05-29 21:17 ` [PATCH 10/13] block: remove external dependency on wbt_flags Josef Bacik
2018-05-29 21:17 ` [PATCH 11/13] rq-qos: introduce dio_bio callback Josef Bacik
2018-05-29 21:17 ` [PATCH 12/13] block: introduce blk-iolatency io controller Josef Bacik
2018-05-29 22:07 ` Randy Dunlap
2018-05-30 16:40 ` Tejun Heo
2018-05-29 21:17 ` [PATCH 13/13] Documentation: add a doc for blk-iolatency Josef Bacik
2018-05-30 16:44 ` Tejun Heo
2018-05-30 18:32 ` Randy Dunlap
2018-06-05 13:29 [PATCH 00/13][V2] Introduce io.latency io controller for cgroups Josef Bacik
2018-06-05 13:29 ` [PATCH 08/13] blk-stat: export helpers for modifying blk_rq_stat Josef Bacik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180529211724.4531-9-josef@toxicpanda.com \
--to=josef@toxicpanda.com \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=hannes@cmpxchg.org \
--cc=jbacik@fb.com \
--cc=kernel-team@fb.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).