| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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 "iw.h" |
| 39 | |
| 40 | DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_iw_statistics, rds_iw_stats); |
| 41 | |
| 42 | static const char *const rds_iw_stat_names[] = { |
| 43 | "iw_connect_raced", |
| 44 | "iw_listen_closed_stale", |
| 45 | "iw_tx_cq_call", |
| 46 | "iw_tx_cq_event", |
| 47 | "iw_tx_ring_full", |
| 48 | "iw_tx_throttle", |
| 49 | "iw_tx_sg_mapping_failure", |
| 50 | "iw_tx_stalled", |
| 51 | "iw_tx_credit_updates", |
| 52 | "iw_rx_cq_call", |
| 53 | "iw_rx_cq_event", |
| 54 | "iw_rx_ring_empty", |
| 55 | "iw_rx_refill_from_cq", |
| 56 | "iw_rx_refill_from_thread", |
| 57 | "iw_rx_alloc_limit", |
| 58 | "iw_rx_credit_updates", |
| 59 | "iw_ack_sent", |
| 60 | "iw_ack_send_failure", |
| 61 | "iw_ack_send_delayed", |
| 62 | "iw_ack_send_piggybacked", |
| 63 | "iw_ack_received", |
| 64 | "iw_rdma_mr_alloc", |
| 65 | "iw_rdma_mr_free", |
| 66 | "iw_rdma_mr_used", |
| 67 | "iw_rdma_mr_pool_flush", |
| 68 | "iw_rdma_mr_pool_wait", |
| 69 | "iw_rdma_mr_pool_depleted", |
| 70 | }; |
| 71 | |
| 72 | unsigned int rds_iw_stats_info_copy(struct rds_info_iterator *iter, |
| 73 | unsigned int avail) |
| 74 | { |
| 75 | struct rds_iw_statistics stats = {0, }; |
| 76 | uint64_t *src; |
| 77 | uint64_t *sum; |
| 78 | size_t i; |
| 79 | int cpu; |
| 80 | |
| 81 | if (avail < ARRAY_SIZE(rds_iw_stat_names)) |
| 82 | goto out; |
| 83 | |
| 84 | for_each_online_cpu(cpu) { |
| 85 | src = (uint64_t *)&(per_cpu(rds_iw_stats, cpu)); |
| 86 | sum = (uint64_t *)&stats; |
| 87 | for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++) |
| 88 | *(sum++) += *(src++); |
| 89 | } |
| 90 | |
| 91 | rds_stats_info_copy(iter, (uint64_t *)&stats, rds_iw_stat_names, |
| 92 | ARRAY_SIZE(rds_iw_stat_names)); |
| 93 | out: |
| 94 | return ARRAY_SIZE(rds_iw_stat_names); |
| 95 | } |