/* * 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(struct rds_ib_statistics, rds_ib_stats) ____cacheline_aligned; static char *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", }; 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); }