linux-kernel - [PATCH 4/6] aoe: fill in per-AoE-target information for debugfs file

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Message-Id: <361157cf24bff1fab81101562d5badf9995afa46.1374610591.git.ecashin@coraid.com>
Date:	Tue, 23 Jul 2013 17:15:34 -0400
From:	Ed Cashin <ecashin@...aid.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, ecashin@...aid.com
Subject:  [PATCH 4/6] aoe: fill in per-AoE-target information for debugfs file

This information is presented in a compact format that has
evolved for easy routine scanning by expert humans, mostly
developers and support technicians helping to troubleshoot
or test AoE-based systems.

Signed-off-by: Ed Cashin <ecashin@...aid.com>
---
 drivers/block/aoe/aoeblk.c |   33 ++++++++++++++++++++++++++++++++-
 1 files changed, 32 insertions(+), 1 deletions(-)

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 0511d38..b58cbeb 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -113,11 +113,42 @@ static ssize_t aoedisk_show_payload(struct device *dev,
 static int aoedisk_debugfs_show(struct seq_file *s, void *ignored)
 {
 	struct aoedev *d;
+	struct aoetgt **t, **te;
+	struct aoeif *ifp, *ife;
 	unsigned long flags;
+	char c;
 
 	d = s->private;
+	seq_printf(s, "rttavg: %d rttdev: %d\n",
+		d->rttavg >> RTTSCALE,
+		d->rttdev >> RTTDSCALE);
+	seq_printf(s, "nskbpool: %d\n", skb_queue_len(&d->skbpool));
+	seq_printf(s, "kicked: %ld\n", d->kicked);
+	seq_printf(s, "maxbcnt: %ld\n", d->maxbcnt);
+	seq_printf(s, "ref: %ld\n", d->ref);
+
 	spin_lock_irqsave(&d->lock, flags);
-	seq_printf(s, "%s\n", d->gd->disk_name); /* place holder */
+	t = d->targets;
+	te = t + d->ntargets;
+	for (; t < te && *t; t++) {
+		c = '\t';
+		seq_printf(s, "falloc: %ld\n", (*t)->falloc);
+		seq_printf(s, "ffree: %p\n",
+			list_empty(&(*t)->ffree) ? NULL : (*t)->ffree.next);
+		seq_printf(s, "%pm:%d:%d:%d\n", (*t)->addr, (*t)->nout,
+			(*t)->maxout, (*t)->nframes);
+		seq_printf(s, "\tssthresh:%d\n", (*t)->ssthresh);
+		seq_printf(s, "\ttaint:%d\n", (*t)->taint);
+		seq_printf(s, "\tr:%d\n", (*t)->rpkts);
+		seq_printf(s, "\tw:%d\n", (*t)->wpkts);
+		ifp = (*t)->ifs;
+		ife = ifp + ARRAY_SIZE((*t)->ifs);
+		for (; ifp->nd && ifp < ife; ifp++) {
+			seq_printf(s, "%c%s", c, ifp->nd->name);
+			c = ',';
+		}
+		seq_puts(s, "\n");
+	}
 	spin_unlock_irqrestore(&d->lock, flags);
 
 	return 0;
-- 
1.7.1

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