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ceph: dump granular cap info in "caps" debugfs file 

We have a "caps" file already that gives statistics on the caps
cache as a whole. Add another section to that output and dump a
line for each individual cap record.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2019-04-24 12:05:15 -04:00 committed by Ilya Dryomov
parent f5d7726900
commit ff4a80bf2d
1 changed files with 32 additions and 2 deletions
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34
fs/ceph/debugfs.c
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@ -124,18 +124,48 @@ static int mdsc_show(struct seq_file *s, void *p)
return 0;
}
static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p)
{
struct seq_file *s = p;
seq_printf(s, "0x%-17lx%-17s%-17s\n", inode->i_ino,
ceph_cap_string(cap->issued),
ceph_cap_string(cap->implemented));
return 0;
}
static int caps_show(struct seq_file *s, void *p)
{
struct ceph_fs_client *fsc = s->private;
int total, avail, used, reserved, min;
struct ceph_mds_client *mdsc = fsc->mdsc;
int total, avail, used, reserved, min, i;
ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
seq_printf(s, "total\t\t%d\n"
"avail\t\t%d\n"
"used\t\t%d\n"
"reserved\t%d\n"
"min\t%d\n",
"min\t\t%d\n\n",
total, avail, used, reserved, min);
seq_printf(s, "ino issued implemented\n");
seq_printf(s, "-----------------------------------------------\n");
mutex_lock(&mdsc->mutex);
for (i = 0; i < mdsc->max_sessions; i++) {
struct ceph_mds_session *session;
session = __ceph_lookup_mds_session(mdsc, i);
if (!session)
continue;
mutex_unlock(&mdsc->mutex);
mutex_lock(&session->s_mutex);
ceph_iterate_session_caps(session, caps_show_cb, s);
mutex_unlock(&session->s_mutex);
ceph_put_mds_session(session);
mutex_lock(&mdsc->mutex);
}
mutex_unlock(&mdsc->mutex);
return 0;
}