IB/qib: Add qp_stats debug file
This adds a seq_file iterator for reporting the QP hash table when the qp_stats file is read. Reviewed-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
parent
17db3a92c1
commit
1dd173b01f
|
@ -188,6 +188,59 @@ static int _ctx_stats_seq_show(struct seq_file *s, void *v)
|
|||
|
||||
DEBUGFS_FILE(ctx_stats)
|
||||
|
||||
static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
|
||||
{
|
||||
struct qib_qp_iter *iter;
|
||||
loff_t n = *pos;
|
||||
|
||||
iter = qib_qp_iter_init(s->private);
|
||||
if (!iter)
|
||||
return NULL;
|
||||
|
||||
while (n--) {
|
||||
if (qib_qp_iter_next(iter)) {
|
||||
kfree(iter);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
return iter;
|
||||
}
|
||||
|
||||
static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
|
||||
loff_t *pos)
|
||||
{
|
||||
struct qib_qp_iter *iter = iter_ptr;
|
||||
|
||||
(*pos)++;
|
||||
|
||||
if (qib_qp_iter_next(iter)) {
|
||||
kfree(iter);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return iter;
|
||||
}
|
||||
|
||||
static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
|
||||
{
|
||||
/* nothing for now */
|
||||
}
|
||||
|
||||
static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
|
||||
{
|
||||
struct qib_qp_iter *iter = iter_ptr;
|
||||
|
||||
if (!iter)
|
||||
return 0;
|
||||
|
||||
qib_qp_iter_print(s, iter);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
DEBUGFS_FILE(qp_stats)
|
||||
|
||||
void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
|
||||
{
|
||||
char name[10];
|
||||
|
@ -200,6 +253,7 @@ void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
|
|||
}
|
||||
DEBUGFS_FILE_CREATE(opcode_stats);
|
||||
DEBUGFS_FILE_CREATE(ctx_stats);
|
||||
DEBUGFS_FILE_CREATE(qp_stats);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
|
@ -35,6 +35,9 @@
|
|||
#include <linux/err.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/jhash.h>
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
#include <linux/seq_file.h>
|
||||
#endif
|
||||
|
||||
#include "qib.h"
|
||||
|
||||
|
@ -1287,3 +1290,94 @@ void qib_get_credit(struct qib_qp *qp, u32 aeth)
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
|
||||
struct qib_qp_iter {
|
||||
struct qib_ibdev *dev;
|
||||
struct qib_qp *qp;
|
||||
int n;
|
||||
};
|
||||
|
||||
struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev)
|
||||
{
|
||||
struct qib_qp_iter *iter;
|
||||
|
||||
iter = kzalloc(sizeof(*iter), GFP_KERNEL);
|
||||
if (!iter)
|
||||
return NULL;
|
||||
|
||||
iter->dev = dev;
|
||||
if (qib_qp_iter_next(iter)) {
|
||||
kfree(iter);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return iter;
|
||||
}
|
||||
|
||||
int qib_qp_iter_next(struct qib_qp_iter *iter)
|
||||
{
|
||||
struct qib_ibdev *dev = iter->dev;
|
||||
int n = iter->n;
|
||||
int ret = 1;
|
||||
struct qib_qp *pqp = iter->qp;
|
||||
struct qib_qp *qp;
|
||||
|
||||
rcu_read_lock();
|
||||
for (; n < dev->qp_table_size; n++) {
|
||||
if (pqp)
|
||||
qp = rcu_dereference(pqp->next);
|
||||
else
|
||||
qp = rcu_dereference(dev->qp_table[n]);
|
||||
pqp = qp;
|
||||
if (qp) {
|
||||
if (iter->qp)
|
||||
atomic_dec(&iter->qp->refcount);
|
||||
atomic_inc(&qp->refcount);
|
||||
rcu_read_unlock();
|
||||
iter->qp = qp;
|
||||
iter->n = n;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
rcu_read_unlock();
|
||||
if (iter->qp)
|
||||
atomic_dec(&iter->qp->refcount);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const char * const qp_type_str[] = {
|
||||
"SMI", "GSI", "RC", "UC", "UD",
|
||||
};
|
||||
|
||||
void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter)
|
||||
{
|
||||
struct qib_swqe *wqe;
|
||||
struct qib_qp *qp = iter->qp;
|
||||
|
||||
wqe = get_swqe_ptr(qp, qp->s_last);
|
||||
seq_printf(s,
|
||||
"N %d QP%u %s %u %u %u f=%x %u %u %u %u %u PSN %x %x %x %x %x (%u %u %u %u %u %u) QP%u LID %x\n",
|
||||
iter->n,
|
||||
qp->ibqp.qp_num,
|
||||
qp_type_str[qp->ibqp.qp_type],
|
||||
qp->state,
|
||||
wqe->wr.opcode,
|
||||
qp->s_hdrwords,
|
||||
qp->s_flags,
|
||||
atomic_read(&qp->s_dma_busy),
|
||||
!list_empty(&qp->iowait),
|
||||
qp->timeout,
|
||||
wqe->ssn,
|
||||
qp->s_lsn,
|
||||
qp->s_last_psn,
|
||||
qp->s_psn, qp->s_next_psn,
|
||||
qp->s_sending_psn, qp->s_sending_hpsn,
|
||||
qp->s_last, qp->s_acked, qp->s_cur,
|
||||
qp->s_tail, qp->s_head, qp->s_size,
|
||||
qp->remote_qpn,
|
||||
qp->remote_ah_attr.dlid);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (c) 2012 Intel Corporation. All rights reserved.
|
||||
* Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
|
||||
* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
|
||||
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
|
||||
*
|
||||
|
@ -917,6 +917,18 @@ void qib_init_qpn_table(struct qib_devdata *dd, struct qib_qpn_table *qpt);
|
|||
|
||||
void qib_free_qpn_table(struct qib_qpn_table *qpt);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
|
||||
struct qib_qp_iter;
|
||||
|
||||
struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev);
|
||||
|
||||
int qib_qp_iter_next(struct qib_qp_iter *iter);
|
||||
|
||||
void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter);
|
||||
|
||||
#endif
|
||||
|
||||
void qib_get_credit(struct qib_qp *qp, u32 aeth);
|
||||
|
||||
unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
|
||||
|
|
Loading…
Reference in a new issue