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Date: Thu, 24 Feb 2022 17:06:53 +0800
From: "Wang Jianchao (Kuaishou)" <jianchao.wan9@...il.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Josef Bacik <jbacik@...com>, Tejun Heo <tj@...nel.org>,
Bart Van Assche <bvanassche@....org>,
linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC V5 15/16] blk/rq-qos: move the rqos debugfs code to blk-rq-qos.c
This is no functional change in this patch.
Signed-off-by: Wang Jianchao (Kuaishou) <jianchao.wan9@...il.com>
---
block/blk-mq-debugfs.c | 42 ++++++------------------------------------
block/blk-mq-debugfs.h | 17 ++++-------------
block/blk-rq-qos.c | 38 +++++++++++++++++++++++++++++++++++---
block/blk-rq-qos.h | 1 +
4 files changed, 46 insertions(+), 52 deletions(-)
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 4c9dafd16a08..71e6a097361b 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -13,7 +13,6 @@
#include "blk-mq-debugfs.h"
#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
-#include "blk-rq-qos.h"
static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
{
@@ -691,7 +690,7 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = {
{},
};
-static void debugfs_create_files(struct dentry *parent, void *data,
+void blk_mq_debugfs_create_files(struct dentry *parent, void *data,
const struct blk_mq_debugfs_attr *attr)
{
if (IS_ERR_OR_NULL(parent))
@@ -709,7 +708,7 @@ void blk_mq_debugfs_register(struct request_queue *q)
struct blk_mq_hw_ctx *hctx;
int i;
- debugfs_create_files(q->debugfs_dir, q, blk_mq_debugfs_queue_attrs);
+ blk_mq_debugfs_create_files(q->debugfs_dir, q, blk_mq_debugfs_queue_attrs);
/*
* blk_mq_init_sched() attempted to do this already, but q->debugfs_dir
@@ -742,7 +741,7 @@ static void blk_mq_debugfs_register_ctx(struct blk_mq_hw_ctx *hctx,
snprintf(name, sizeof(name), "cpu%u", ctx->cpu);
ctx_dir = debugfs_create_dir(name, hctx->debugfs_dir);
- debugfs_create_files(ctx_dir, ctx, blk_mq_debugfs_ctx_attrs);
+ blk_mq_debugfs_create_files(ctx_dir, ctx, blk_mq_debugfs_ctx_attrs);
}
void blk_mq_debugfs_register_hctx(struct request_queue *q,
@@ -755,7 +754,7 @@ void blk_mq_debugfs_register_hctx(struct request_queue *q,
snprintf(name, sizeof(name), "hctx%u", hctx->queue_num);
hctx->debugfs_dir = debugfs_create_dir(name, q->debugfs_dir);
- debugfs_create_files(hctx->debugfs_dir, hctx, blk_mq_debugfs_hctx_attrs);
+ blk_mq_debugfs_create_files(hctx->debugfs_dir, hctx, blk_mq_debugfs_hctx_attrs);
hctx_for_each_ctx(hctx, ctx, i)
blk_mq_debugfs_register_ctx(hctx, ctx);
@@ -802,7 +801,7 @@ void blk_mq_debugfs_register_sched(struct request_queue *q)
q->sched_debugfs_dir = debugfs_create_dir("sched", q->debugfs_dir);
- debugfs_create_files(q->sched_debugfs_dir, q, e->queue_debugfs_attrs);
+ blk_mq_debugfs_create_files(q->sched_debugfs_dir, q, e->queue_debugfs_attrs);
}
void blk_mq_debugfs_unregister_sched(struct request_queue *q)
@@ -811,35 +810,6 @@ void blk_mq_debugfs_unregister_sched(struct request_queue *q)
q->sched_debugfs_dir = NULL;
}
-void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
-{
- debugfs_remove_recursive(rqos->debugfs_dir);
- rqos->debugfs_dir = NULL;
-}
-
-void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
-{
- struct request_queue *q = rqos->q;
-
- if (rqos->debugfs_dir || !rqos->ops->debugfs_attrs)
- return;
-
- if (!q->rqos_debugfs_dir)
- q->rqos_debugfs_dir = debugfs_create_dir("rqos",
- q->debugfs_dir);
-
- rqos->debugfs_dir = debugfs_create_dir(rqos->ops->name,
- rqos->q->rqos_debugfs_dir);
-
- debugfs_create_files(rqos->debugfs_dir, rqos, rqos->ops->debugfs_attrs);
-}
-
-void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
-{
- debugfs_remove_recursive(q->rqos_debugfs_dir);
- q->rqos_debugfs_dir = NULL;
-}
-
void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx)
{
@@ -858,7 +828,7 @@ void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
hctx->sched_debugfs_dir = debugfs_create_dir("sched",
hctx->debugfs_dir);
- debugfs_create_files(hctx->sched_debugfs_dir, hctx,
+ blk_mq_debugfs_create_files(hctx->sched_debugfs_dir, hctx,
e->hctx_debugfs_attrs);
}
diff --git a/block/blk-mq-debugfs.h b/block/blk-mq-debugfs.h
index a68aa6041a10..ed805dca934c 100644
--- a/block/blk-mq-debugfs.h
+++ b/block/blk-mq-debugfs.h
@@ -31,10 +31,8 @@ void blk_mq_debugfs_unregister_sched(struct request_queue *q);
void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
-
-void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
-void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
-void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q);
+void blk_mq_debugfs_create_files(struct dentry *parent, void *data,
+ const struct blk_mq_debugfs_attr *attr);
#else
static inline void blk_mq_debugfs_register(struct request_queue *q)
{
@@ -78,15 +76,8 @@ static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hc
{
}
-static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
-{
-}
-
-static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
-{
-}
-
-static inline void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
+void blk_mq_debugfs_create_files(struct dentry *parent, void *data,
+ const struct blk_mq_debugfs_attr *attr)
{
}
#endif
diff --git a/block/blk-rq-qos.c b/block/blk-rq-qos.c
index 236ecb2af845..0572dd584c53 100644
--- a/block/blk-rq-qos.c
+++ b/block/blk-rq-qos.c
@@ -295,6 +295,31 @@ void rq_qos_wait(struct rq_wait *rqw, void *private_data,
finish_wait(&rqw->wait, &data.wq);
}
+#ifdef CONFIG_BLK_DEBUG_FS
+static void rq_qos_debugfs_unregister(struct rq_qos *rqos)
+{
+ debugfs_remove_recursive(rqos->debugfs_dir);
+ rqos->debugfs_dir = NULL;
+}
+
+static void rq_qos_debugfs_register(struct rq_qos *rqos)
+{
+ struct request_queue *q = rqos->q;
+
+ if (rqos->debugfs_dir || !rqos->ops->debugfs_attrs)
+ return;
+
+ if (!q->rqos_debugfs_dir)
+ q->rqos_debugfs_dir = debugfs_create_dir("rqos",
+ q->debugfs_dir);
+
+ rqos->debugfs_dir = debugfs_create_dir(rqos->ops->name,
+ rqos->q->rqos_debugfs_dir);
+
+ blk_mq_debugfs_create_files(rqos->debugfs_dir, rqos, rqos->ops->debugfs_attrs);
+}
+#endif
+
void rq_qos_exit(struct request_queue *q)
{
/*
@@ -306,7 +331,10 @@ void rq_qos_exit(struct request_queue *q)
q->rq_qos = rqos->next;
rqos->ops->exit(rqos);
}
- blk_mq_debugfs_unregister_queue_rqos(q);
+#ifdef CONFIG_BLK_DEBUG_FS
+ debugfs_remove_recursive(q->rqos_debugfs_dir);
+ q->rqos_debugfs_dir = NULL;
+#endif
}
static struct rq_qos *rq_qos_by_name(struct request_queue *q,
@@ -383,8 +411,10 @@ void rq_qos_activate(struct request_queue *q,
}
spin_unlock_irq(&q->rqos_lock);
+#ifdef CONFIG_BLK_DEBUG_FS
if (rqos->ops->debugfs_attrs)
- blk_mq_debugfs_register_rqos(rqos);
+ rq_qos_debugfs_register(rqos);
+#endif
}
void rq_qos_deactivate(struct rq_qos *rqos)
@@ -406,7 +436,9 @@ void rq_qos_deactivate(struct rq_qos *rqos)
}
}
spin_unlock_irq(&q->rqos_lock);
- blk_mq_debugfs_unregister_rqos(rqos);
+#ifdef CONFIG_BLK_DEBUG_FS
+ rq_qos_debugfs_unregister(rqos);
+#endif
}
static struct rq_qos_ops *rq_qos_op_find(const char *name)
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h
index 3d7df14edde3..463c64d28e8b 100644
--- a/block/blk-rq-qos.h
+++ b/block/blk-rq-qos.h
@@ -8,6 +8,7 @@
#include <linux/atomic.h>
#include <linux/wait.h>
#include <linux/blk-mq.h>
+#include <linux/debugfs.h>
#include "blk-mq-debugfs.h"
--
2.17.1
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