[net-next-2.6.git] / net / rds / ib_stats.c

/*
 * Copyright (c) 2006 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
#include <linux/percpu.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>

#include "rds.h"
#include "ib.h"

DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);

static const char *const rds_ib_stat_names[] = {
	"ib_connect_raced",
	"ib_listen_closed_stale",
	"ib_tx_cq_call",
	"ib_tx_cq_event",
	"ib_tx_ring_full",
	"ib_tx_throttle",
	"ib_tx_sg_mapping_failure",
	"ib_tx_stalled",
	"ib_tx_credit_updates",
	"ib_rx_cq_call",
	"ib_rx_cq_event",
	"ib_rx_ring_empty",
	"ib_rx_refill_from_cq",
	"ib_rx_refill_from_thread",
	"ib_rx_alloc_limit",
	"ib_rx_credit_updates",
	"ib_ack_sent",
	"ib_ack_send_failure",
	"ib_ack_send_delayed",
	"ib_ack_send_piggybacked",
	"ib_ack_received",
	"ib_rdma_mr_alloc",
	"ib_rdma_mr_free",
	"ib_rdma_mr_used",
	"ib_rdma_mr_pool_flush",
	"ib_rdma_mr_pool_wait",
	"ib_rdma_mr_pool_depleted",
	"ib_atomic_cswp",
	"ib_atomic_fadd",
};

unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter,
				    unsigned int avail)
{
	struct rds_ib_statistics stats = {0, };
	uint64_t *src;
	uint64_t *sum;
	size_t i;
	int cpu;

	if (avail < ARRAY_SIZE(rds_ib_stat_names))
		goto out;

	for_each_online_cpu(cpu) {
		src = (uint64_t *)&(per_cpu(rds_ib_stats, cpu));
		sum = (uint64_t *)&stats;
		for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++)
			*(sum++) += *(src++);
	}

	rds_stats_info_copy(iter, (uint64_t *)&stats, rds_ib_stat_names,
			    ARRAY_SIZE(rds_ib_stat_names));
out:
	return ARRAY_SIZE(rds_ib_stat_names);
}
Commit	Line	Data
e6babe4c AG	1	/*
	2	* Copyright (c) 2006 Oracle. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*
	32	*/
	33	#include <linux/percpu.h>
	34	#include <linux/seq_file.h>
	35	#include <linux/proc_fs.h>
	36
	37	#include "rds.h"
	38	#include "ib.h"
	39
b9bf3121	40	DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);
e6babe4c	41
36cbd3dc	42	static const char *const rds_ib_stat_names[] = {
e6babe4c AG	43	"ib_connect_raced",
	44	"ib_listen_closed_stale",
	45	"ib_tx_cq_call",
	46	"ib_tx_cq_event",
	47	"ib_tx_ring_full",
	48	"ib_tx_throttle",
	49	"ib_tx_sg_mapping_failure",
	50	"ib_tx_stalled",
	51	"ib_tx_credit_updates",
	52	"ib_rx_cq_call",
	53	"ib_rx_cq_event",
	54	"ib_rx_ring_empty",
	55	"ib_rx_refill_from_cq",
	56	"ib_rx_refill_from_thread",
	57	"ib_rx_alloc_limit",
	58	"ib_rx_credit_updates",
	59	"ib_ack_sent",
	60	"ib_ack_send_failure",
	61	"ib_ack_send_delayed",
	62	"ib_ack_send_piggybacked",
	63	"ib_ack_received",
	64	"ib_rdma_mr_alloc",
	65	"ib_rdma_mr_free",
	66	"ib_rdma_mr_used",
	67	"ib_rdma_mr_pool_flush",
	68	"ib_rdma_mr_pool_wait",
	69	"ib_rdma_mr_pool_depleted",
51e2cba8 AG	70	"ib_atomic_cswp",
51e2cba8 AG	71	"ib_atomic_fadd",
e6babe4c AG	72	};
	73
	74	unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter,
	75	unsigned int avail)
	76	{
	77	struct rds_ib_statistics stats = {0, };
	78	uint64_t *src;
	79	uint64_t *sum;
	80	size_t i;
	81	int cpu;
	82
	83	if (avail < ARRAY_SIZE(rds_ib_stat_names))
	84	goto out;
	85
	86	for_each_online_cpu(cpu) {
	87	src = (uint64_t *)&(per_cpu(rds_ib_stats, cpu));
	88	sum = (uint64_t *)&stats;
	89	for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++)
	90	(sum++) += (src++);
	91	}
	92
	93	rds_stats_info_copy(iter, (uint64_t *)&stats, rds_ib_stat_names,
	94	ARRAY_SIZE(rds_ib_stat_names));
	95	out:
	96	return ARRAY_SIZE(rds_ib_stat_names);
	97	}