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 | |
40 | DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats); |
41 | |
42 | static const char *const rds_ib_stat_names[] = { |
43 | "ib_connect_raced" , |
44 | "ib_listen_closed_stale" , |
45 | "ib_evt_handler_call" , |
46 | "ib_tasklet_call" , |
47 | "ib_tx_cq_event" , |
48 | "ib_tx_ring_full" , |
49 | "ib_tx_throttle" , |
50 | "ib_tx_sg_mapping_failure" , |
51 | "ib_tx_stalled" , |
52 | "ib_tx_credit_updates" , |
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_total_frags" , |
59 | "ib_rx_total_incs" , |
60 | "ib_rx_credit_updates" , |
61 | "ib_ack_sent" , |
62 | "ib_ack_send_failure" , |
63 | "ib_ack_send_delayed" , |
64 | "ib_ack_send_piggybacked" , |
65 | "ib_ack_received" , |
66 | "ib_rdma_mr_8k_alloc" , |
67 | "ib_rdma_mr_8k_free" , |
68 | "ib_rdma_mr_8k_used" , |
69 | "ib_rdma_mr_8k_pool_flush" , |
70 | "ib_rdma_mr_8k_pool_wait" , |
71 | "ib_rdma_mr_8k_pool_depleted" , |
72 | "ib_rdma_mr_1m_alloc" , |
73 | "ib_rdma_mr_1m_free" , |
74 | "ib_rdma_mr_1m_used" , |
75 | "ib_rdma_mr_1m_pool_flush" , |
76 | "ib_rdma_mr_1m_pool_wait" , |
77 | "ib_rdma_mr_1m_pool_depleted" , |
78 | "ib_rdma_mr_8k_reused" , |
79 | "ib_rdma_mr_1m_reused" , |
80 | "ib_atomic_cswp" , |
81 | "ib_atomic_fadd" , |
82 | }; |
83 | |
84 | unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, |
85 | unsigned int avail) |
86 | { |
87 | struct rds_ib_statistics stats = {0, }; |
88 | uint64_t *src; |
89 | uint64_t *sum; |
90 | size_t i; |
91 | int cpu; |
92 | |
93 | if (avail < ARRAY_SIZE(rds_ib_stat_names)) |
94 | goto out; |
95 | |
96 | for_each_online_cpu(cpu) { |
97 | src = (uint64_t *)&(per_cpu(rds_ib_stats, cpu)); |
98 | sum = (uint64_t *)&stats; |
99 | for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++) |
100 | *(sum++) += *(src++); |
101 | } |
102 | |
103 | rds_stats_info_copy(iter, values: (uint64_t *)&stats, names: rds_ib_stat_names, |
104 | ARRAY_SIZE(rds_ib_stat_names)); |
105 | out: |
106 | return ARRAY_SIZE(rds_ib_stat_names); |
107 | } |
108 | |