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aoe: fill in per-AoE-target information for debugfs file

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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@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ed Cashin 2013-09-11 14:25:42 -07:00 committed by Linus Torvalds
parent 1cf94797c2
commit 2256c1c51e
1 changed files with 32 additions and 1 deletions
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33
drivers/block/aoe/aoeblk.c
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@ -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;