[6/6] f2fs: show # of on-going flush and discard bios

Message ID	20170112224407.54026-6-jaegeuk@kernel.org (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-fsdevel-owner@kernel.org> From: Jaegeuk Kim <jaegeuk@kernel.org> To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim <jaegeuk@kernel.org> Subject: [PATCH 6/6] f2fs: show # of on-going flush and discard bios Date: Thu, 12 Jan 2017 14:44:07 -0800 Message-Id: <20170112224407.54026-6-jaegeuk@kernel.org> In-Reply-To: <20170112224407.54026-1-jaegeuk@kernel.org> References: <20170112224407.54026-1-jaegeuk@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk

Message ID

20170112224407.54026-6-jaegeuk@kernel.org (mailing list archive)

State

New, archived

Headers

From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH 6/6] f2fs: show # of on-going flush and discard bios
Date: Thu, 12 Jan 2017 14:44:07 -0800
Message-Id: <20170112224407.54026-6-jaegeuk@kernel.org>
In-Reply-To: <20170112224407.54026-1-jaegeuk@kernel.org>
References: <20170112224407.54026-1-jaegeuk@kernel.org>
Sender: linux-fsdevel-owner@vger.kernel.org
Precedence: bulk

Commit Message

Jaegeuk Kim Jan. 12, 2017, 10:44 p.m. UTC

This patch adds stat information for flush and discard commands.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/debug.c   | 7 +++++--
 fs/f2fs/f2fs.h    | 3 ++-
 fs/f2fs/segment.c | 4 ++++
 3 files changed, 11 insertions(+), 3 deletions(-)

Comments

He YunLei Jan. 14, 2017, 2:26 a.m. UTC | #1

Hi Jaegeuk Kim,

On 2017/1/13 6:44, Jaegeuk Kim wrote:
> This patch adds stat information for flush and discard commands.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/debug.c   | 7 +++++--
>  fs/f2fs/f2fs.h    | 3 ++-
>  fs/f2fs/segment.c | 4 ++++
>  3 files changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
> index f9f6b0aeba02..e67cab2fafac 100644
> --- a/fs/f2fs/debug.c
> +++ b/fs/f2fs/debug.c
> @@ -54,6 +54,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
>  	si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
>  	si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
>  	si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
> +	si->nr_flush = atomic_read(&SM_I(sbi)->fcc_info->submit_flush);
> +	si->nr_discard = atomic_read(&SM_I(sbi)->dcc_info->submit_discard);
>  	si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
>  	si->rsvd_segs = reserved_segments(sbi);
>  	si->overp_segs = overprovision_segments(sbi);
> @@ -318,8 +320,9 @@ static int stat_show(struct seq_file *s, void *v)
>  		seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
>  				si->ext_tree, si->zombie_tree, si->ext_node);
>  		seq_puts(s, "\nBalancing F2FS Async:\n");
> -		seq_printf(s, "  - IO (CP: %4d, Data: %4d)\n",
> -			   si->nr_wb_cp_data, si->nr_wb_data);
> +		seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n",
> +			   si->nr_wb_cp_data, si->nr_wb_data,
> +			   si->nr_flush, si->nr_discard);
>  		seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d)\n",
>  			   si->inmem_pages, si->aw_cnt, si->max_aw_cnt);
>  		seq_printf(s, "  - nodes: %4d in %4d\n",
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index ef5e3709c161..d51bc18e7292 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -201,6 +201,7 @@ struct discard_cmd_control {
>  	wait_queue_head_t discard_wait_queue;	/* waiting queue for wake-up */
>  	struct mutex cmd_lock;
>  	int max_discards;			/* max. discards to be issued */
> +	atomic_t submit_discard;		/* # of issued discard */
>  };

Here, we need to initialize submit_discard.

Thanks.
>
>  /* for the list of fsync inodes, used only during recovery */
> @@ -2254,7 +2255,7 @@ struct f2fs_stat_info {
>  	unsigned int ndirty_dirs, ndirty_files, ndirty_all;
>  	int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
>  	int total_count, utilization;
> -	int bg_gc, nr_wb_cp_data, nr_wb_data;
> +	int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard;
>  	int inline_xattr, inline_inode, inline_dir, orphans;
>  	int aw_cnt, max_aw_cnt;
>  	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 74364006bfa6..5a2d380182d9 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -653,6 +653,8 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d
>  {
>  	int err = dc->bio->bi_error;
>
> +	atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard));
> +
>  	if (err == -EOPNOTSUPP)
>  		err = 0;
>
> @@ -678,6 +680,7 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
>  			if (dc->state == D_PREP) {
>  				dc->state = D_SUBMIT;
>  				submit_bio(dc->bio);
> +				atomic_inc(&dcc->submit_discard);
>  			}
>  			wait_for_completion_io(&dc->wait);
>
> @@ -723,6 +726,7 @@ static int issue_discard_thread(void *data)
>  		if (dc->state == D_PREP) {
>  			dc->state = D_SUBMIT;
>  			submit_bio(dc->bio);
> +			atomic_inc(&dcc->submit_discard);
>  			if (iter++ > DISCARD_ISSUE_RATE)
>  				break;
>  		} else if (dc->state == D_DONE) {
>

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He YunLei Jan. 14, 2017, 7:27 a.m. UTC | #2

Hi Jaegeuk,

On 2017/1/13 6:44, Jaegeuk Kim wrote:
> This patch adds stat information for flush and discard commands.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/debug.c   | 7 +++++--
>  fs/f2fs/f2fs.h    | 3 ++-
>  fs/f2fs/segment.c | 4 ++++
>  3 files changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
> index f9f6b0aeba02..e67cab2fafac 100644
> --- a/fs/f2fs/debug.c
> +++ b/fs/f2fs/debug.c
> @@ -54,6 +54,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
>  	si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
>  	si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
>  	si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
> +	si->nr_flush = atomic_read(&SM_I(sbi)->fcc_info->submit_flush);
> +	si->nr_discard = atomic_read(&SM_I(sbi)->dcc_info->submit_discard);
>  	si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
>  	si->rsvd_segs = reserved_segments(sbi);
>  	si->overp_segs = overprovision_segments(sbi);
> @@ -318,8 +320,9 @@ static int stat_show(struct seq_file *s, void *v)
>  		seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
>  				si->ext_tree, si->zombie_tree, si->ext_node);
>  		seq_puts(s, "\nBalancing F2FS Async:\n");
> -		seq_printf(s, "  - IO (CP: %4d, Data: %4d)\n",
> -			   si->nr_wb_cp_data, si->nr_wb_data);
> +		seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n",
> +			   si->nr_wb_cp_data, si->nr_wb_data,
> +			   si->nr_flush, si->nr_discard);
>  		seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d)\n",
>  			   si->inmem_pages, si->aw_cnt, si->max_aw_cnt);
>  		seq_printf(s, "  - nodes: %4d in %4d\n",
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index ef5e3709c161..d51bc18e7292 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -201,6 +201,7 @@ struct discard_cmd_control {
>  	wait_queue_head_t discard_wait_queue;	/* waiting queue for wake-up */
>  	struct mutex cmd_lock;
>  	int max_discards;			/* max. discards to be issued */
> +	atomic_t submit_discard;		/* # of issued discard */
>  };
>
>  /* for the list of fsync inodes, used only during recovery */
> @@ -2254,7 +2255,7 @@ struct f2fs_stat_info {
>  	unsigned int ndirty_dirs, ndirty_files, ndirty_all;
>  	int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
>  	int total_count, utilization;
> -	int bg_gc, nr_wb_cp_data, nr_wb_data;
> +	int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard;
>  	int inline_xattr, inline_inode, inline_dir, orphans;
>  	int aw_cnt, max_aw_cnt;
>  	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 74364006bfa6..5a2d380182d9 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -653,6 +653,8 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d
>  {
>  	int err = dc->bio->bi_error;
>
> +	atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard));
Here submit_discard decrease will include discard command without bio submit.

Thanks.
> +
>  	if (err == -EOPNOTSUPP)
>  		err = 0;
>
> @@ -678,6 +680,7 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
>  			if (dc->state == D_PREP) {
>  				dc->state = D_SUBMIT;
>  				submit_bio(dc->bio);
> +				atomic_inc(&dcc->submit_discard);
>  			}
>  			wait_for_completion_io(&dc->wait);
>
> @@ -723,6 +726,7 @@ static int issue_discard_thread(void *data)
>  		if (dc->state == D_PREP) {
>  			dc->state = D_SUBMIT;
>  			submit_bio(dc->bio);
> +			atomic_inc(&dcc->submit_discard);
>  			if (iter++ > DISCARD_ISSUE_RATE)
>  				break;
>  		} else if (dc->state == D_DONE) {
>

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Chao Yu Feb. 22, 2017, 9:40 a.m. UTC | #3

On 2017/1/13 6:44, Jaegeuk Kim wrote:
> This patch adds stat information for flush and discard commands.

Need initialization of atomical variable?

> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <yuchao0@huawei.com>

Thanks,

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index f9f6b0aeba02..e67cab2fafac 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -54,6 +54,8 @@  static void update_general_status(struct f2fs_sb_info *sbi)
 	si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
 	si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
 	si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
+	si->nr_flush = atomic_read(&SM_I(sbi)->fcc_info->submit_flush);
+	si->nr_discard = atomic_read(&SM_I(sbi)->dcc_info->submit_discard);
 	si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
 	si->rsvd_segs = reserved_segments(sbi);
 	si->overp_segs = overprovision_segments(sbi);
@@ -318,8 +320,9 @@  static int stat_show(struct seq_file *s, void *v)
 		seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 				si->ext_tree, si->zombie_tree, si->ext_node);
 		seq_puts(s, "\nBalancing F2FS Async:\n");
-		seq_printf(s, "  - IO (CP: %4d, Data: %4d)\n",
-			   si->nr_wb_cp_data, si->nr_wb_data);
+		seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n",
+			   si->nr_wb_cp_data, si->nr_wb_data,
+			   si->nr_flush, si->nr_discard);
 		seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d)\n",
 			   si->inmem_pages, si->aw_cnt, si->max_aw_cnt);
 		seq_printf(s, "  - nodes: %4d in %4d\n",
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ef5e3709c161..d51bc18e7292 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -201,6 +201,7 @@  struct discard_cmd_control {
 	wait_queue_head_t discard_wait_queue;	/* waiting queue for wake-up */
 	struct mutex cmd_lock;
 	int max_discards;			/* max. discards to be issued */
+	atomic_t submit_discard;		/* # of issued discard */
 };
 
 /* for the list of fsync inodes, used only during recovery */
@@ -2254,7 +2255,7 @@  struct f2fs_stat_info {
 	unsigned int ndirty_dirs, ndirty_files, ndirty_all;
 	int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
 	int total_count, utilization;
-	int bg_gc, nr_wb_cp_data, nr_wb_data;
+	int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard;
 	int inline_xattr, inline_inode, inline_dir, orphans;
 	int aw_cnt, max_aw_cnt;
 	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 74364006bfa6..5a2d380182d9 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -653,6 +653,8 @@  static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d
 {
 	int err = dc->bio->bi_error;
 
+	atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard));
+
 	if (err == -EOPNOTSUPP)
 		err = 0;
 
@@ -678,6 +680,7 @@  void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
 			if (dc->state == D_PREP) {
 				dc->state = D_SUBMIT;
 				submit_bio(dc->bio);
+				atomic_inc(&dcc->submit_discard);
 			}
 			wait_for_completion_io(&dc->wait);
 
@@ -723,6 +726,7 @@  static int issue_discard_thread(void *data)
 		if (dc->state == D_PREP) {
 			dc->state = D_SUBMIT;
 			submit_bio(dc->bio);
+			atomic_inc(&dcc->submit_discard);
 			if (iter++ > DISCARD_ISSUE_RATE)
 				break;
 		} else if (dc->state == D_DONE) {

[6/6] f2fs: show # of on-going flush and discard bios

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