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From: Peng Tao <tao.peng@primarydata.com>
To: linux-nfs <linux-nfs@vger.kernel.org>
Cc: Peng Tao <tao.peng@primarydata.com>
Subject: [PATCH 06/11] pNFS/flexfiles: track when layout is first used
Date: Tue, 16 Jun 2015 22:47:27 +0800	[thread overview]
Message-ID: <1434466052-10491-7-git-send-email-tao.peng@primarydata.com> (raw)
In-Reply-To: <1434466052-10491-1-git-send-email-tao.peng@primarydata.com>

So that we can report cumulative time since the beginning
of statistics collection of the layout.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
---
 fs/nfs/flexfilelayout/flexfilelayout.c | 10 +++++++---
 fs/nfs/flexfilelayout/flexfilelayout.h |  1 +
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index acbe677..42f79c6 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -453,9 +453,13 @@ nfs4_ff_layout_calc_completion_time(struct rpc_task *task)
 }
 
 static void
-nfs4_ff_layoutstat_start_io(struct nfs4_ff_layoutstat *layoutstat)
+nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror,
+			    struct nfs4_ff_layoutstat *layoutstat)
 {
+	static const ktime_t notime = {0};
+
 	nfs4_ff_start_busy_timer(&layoutstat->busy_timer);
+	cmpxchg(&mirror->start_time, notime, ktime_get());
 }
 
 static void
@@ -493,7 +497,7 @@ nfs4_ff_layout_stat_io_start_read(struct nfs4_ff_layout_mirror *mirror,
 		__u64 requested)
 {
 	spin_lock(&mirror->lock);
-	nfs4_ff_layoutstat_start_io(&mirror->read_stat);
+	nfs4_ff_layoutstat_start_io(mirror, &mirror->read_stat);
 	nfs4_ff_layout_stat_io_update_requested(&mirror->read_stat, requested);
 	spin_unlock(&mirror->lock);
 }
@@ -516,7 +520,7 @@ nfs4_ff_layout_stat_io_start_write(struct nfs4_ff_layout_mirror *mirror,
 		__u64 requested)
 {
 	spin_lock(&mirror->lock);
-	nfs4_ff_layoutstat_start_io(&mirror->write_stat);
+	nfs4_ff_layoutstat_start_io(mirror , &mirror->write_stat);
 	nfs4_ff_layout_stat_io_update_requested(&mirror->write_stat, requested);
 	spin_unlock(&mirror->lock);
 }
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h
index f7493f7..0e7366f 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -74,6 +74,7 @@ struct nfs4_ff_layout_mirror {
 	spinlock_t			lock;
 	struct nfs4_ff_layoutstat	read_stat;
 	struct nfs4_ff_layoutstat	write_stat;
+	ktime_t				start_time;
 };
 
 struct nfs4_ff_layout_segment {
-- 
1.8.3.1


  parent reply	other threads:[~2015-06-16 14:49 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-16 14:47 [PATCH 00/11] pnfs/flexfiles: layoutstats support Peng Tao
2015-06-16 14:47 ` [PATCH 01/11] NFSv.2/pnfs Add a LAYOUTSTATS rpc function Peng Tao
2015-06-18 20:14   ` Jeff Layton
2015-06-16 14:47 ` [PATCH 02/11] pNFS: fill in nfs42_layoutstat_ops Peng Tao
2015-06-16 14:47 ` [PATCH 03/11] pnfs: add pnfs_report_layoutstat helper function Peng Tao
2015-06-16 14:47 ` [PATCH 04/11] pNFS/flexfiles: Remove unused struct members user_name, group_name Peng Tao
2015-06-16 14:47 ` [PATCH 05/11] pNFS/flexfiles: add layoutstats tracking Peng Tao
2015-06-16 14:47 ` Peng Tao [this message]
2015-06-18 16:30   ` [PATCH 06/11] pNFS/flexfiles: track when layout is first used Jeff Layton
2015-06-16 14:47 ` [PATCH 07/11] pnfs/flexfiles: add ff_layout_prepare_layoutstats Peng Tao
2015-06-16 14:47 ` [PATCH 08/11] pnfs/flexfiles: encode LAYOUTSTATS flexfiles specific data Peng Tao
2015-06-16 14:47 ` [PATCH 09/11] pnfs/flexfiles: reset IO statistics upon LAYOUTSTATS success Peng Tao
2015-06-16 14:47 ` [PATCH 10/11] nfs42: serialize LAYOUTSTATS calls of the same file Peng Tao
2015-06-16 14:47 ` [PATCH 11/11] pnfs/flexfiles: report layoutstat regularly Peng Tao
2015-06-18 20:17 ` [PATCH 00/11] pnfs/flexfiles: layoutstats support Jeff Layton
2015-06-19  1:47   ` Peng Tao

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