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IB/hfi1: Convert qp_stats debugfs interface to use new iterator API 

Continue moving copy/paste code into rdmavt.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mike Marciniszyn 2017-08-28 11:23:58 -07:00 committed by Doug Ledford
parent dff2fe7e8c
commit e5c197ac35
3 changed files with 14 additions and 107 deletions
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15
drivers/infiniband/hw/hfi1/debugfs.c
View File

@ -1,4 +1,3 @@
#ifdef CONFIG_DEBUG_FS
/*
* Copyright(c) 2015-2017 Intel Corporation.
*
@ -267,10 +266,10 @@ DEBUGFS_FILE_OPS(ctx_stats);
static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
__acquires(RCU)
{
struct qp_iter *iter;
struct rvt_qp_iter *iter;
loff_t n = *pos;
iter = qp_iter_init(s->private);
iter = rvt_qp_iter_init(s->private, 0, NULL);
/* stop calls rcu_read_unlock */
rcu_read_lock();
@ -279,7 +278,7 @@ static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
return NULL;
do {
if (qp_iter_next(iter)) {
if (rvt_qp_iter_next(iter)) {
kfree(iter);
return NULL;
}
@ -292,11 +291,11 @@ static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
loff_t *pos)
__must_hold(RCU)
{
struct qp_iter *iter = iter_ptr;
struct rvt_qp_iter *iter = iter_ptr;
(*pos)++;
if (qp_iter_next(iter)) {
if (rvt_qp_iter_next(iter)) {
kfree(iter);
return NULL;
}
@ -312,7 +311,7 @@ static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
{
struct qp_iter *iter = iter_ptr;
struct rvt_qp_iter *iter = iter_ptr;
if (!iter)
return 0;
@ -1535,5 +1534,3 @@ void hfi1_dbg_exit(void)
debugfs_remove_recursive(hfi1_dbg_root);
hfi1_dbg_root = NULL;
}
#endif

83
drivers/infiniband/hw/hfi1/qp.c
View File

@ -530,82 +530,6 @@ struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5)
sc5);
}
struct qp_iter {
struct hfi1_ibdev *dev;
struct rvt_qp *qp;
int specials;
int n;
};
struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev)
{
struct qp_iter *iter;
iter = kzalloc(sizeof(*iter), GFP_KERNEL);
if (!iter)
return NULL;
iter->dev = dev;
iter->specials = dev->rdi.ibdev.phys_port_cnt * 2;
return iter;
}
int qp_iter_next(struct qp_iter *iter)
{
struct hfi1_ibdev *dev = iter->dev;
int n = iter->n;
int ret = 1;
struct rvt_qp *pqp = iter->qp;
struct rvt_qp *qp;
/*
* The approach is to consider the special qps
* as an additional table entries before the
* real hash table. Since the qp code sets
* the qp->next hash link to NULL, this works just fine.
*
* iter->specials is 2 * # ports
*
* n = 0..iter->specials is the special qp indices
*
* n = iter->specials..dev->rdi.qp_dev->qp_table_size+iter->specials are
* the potential hash bucket entries
*
*/
for (; n < dev->rdi.qp_dev->qp_table_size + iter->specials; n++) {
if (pqp) {
qp = rcu_dereference(pqp->next);
} else {
if (n < iter->specials) {
struct hfi1_pportdata *ppd;
struct hfi1_ibport *ibp;
int pidx;
pidx = n % dev->rdi.ibdev.phys_port_cnt;
ppd = &dd_from_dev(dev)->pport[pidx];
ibp = &ppd->ibport_data;
if (!(n & 1))
qp = rcu_dereference(ibp->rvp.qp[0]);
else
qp = rcu_dereference(ibp->rvp.qp[1]);
} else {
qp = rcu_dereference(
dev->rdi.qp_dev->qp_table[
(n - iter->specials)]);
}
}
pqp = qp;
if (qp) {
iter->qp = qp;
iter->n = n;
return 0;
}
}
return ret;
}
static const char * const qp_type_str[] = {
"SMI", "GSI", "RC", "UC", "UD",
};
@ -619,7 +543,12 @@ static int qp_idle(struct rvt_qp *qp)
qp->s_tail == qp->s_head;
}
void qp_iter_print(struct seq_file *s, struct qp_iter *iter)
/**
* qp_iter_print - print the qp information to seq_file
* @s: the seq_file to emit the qp information on
* @iter: the iterator for the qp hash list
*/
void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter)
{
struct rvt_swqe *wqe;
struct rvt_qp *qp = iter->qp;

23
drivers/infiniband/hw/hfi1/qp.h
View File

@ -1,7 +1,7 @@
#ifndef _QP_H
#define _QP_H
/*
* Copyright(c) 2015, 2016 Intel Corporation.
* Copyright(c) 2015 - 2017 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
@ -94,26 +94,7 @@ void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag);
struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5);
struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5);
struct qp_iter;
/**
* qp_iter_init - initialize the iterator for the qp hash list
* @dev: the hfi1_ibdev
*/
struct qp_iter *qp_iter_init(struct hfi1_ibdev *dev);
/**
* qp_iter_next - Find the next qp in the hash list
* @iter: the iterator for the qp hash list
*/
int qp_iter_next(struct qp_iter *iter);
/**
* qp_iter_print - print the qp information to seq_file
* @s: the seq_file to emit the qp information on
* @iter: the iterator for the qp hash list
*/
void qp_iter_print(struct seq_file *s, struct qp_iter *iter);
void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
void _hfi1_schedule_send(struct rvt_qp *qp);
void hfi1_schedule_send(struct rvt_qp *qp);