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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 | ||
40 | DEFINE_PER_CPU(struct rds_ib_statistics, rds_ib_stats) ____cacheline_aligned; | |
41 | ||
42 | static char *rds_ib_stat_names[] = { | |
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", | |
70 | }; | |
71 | ||
72 | unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, | |
73 | unsigned int avail) | |
74 | { | |
75 | struct rds_ib_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_ib_stat_names)) | |
82 | goto out; | |
83 | ||
84 | for_each_online_cpu(cpu) { | |
85 | src = (uint64_t *)&(per_cpu(rds_ib_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_ib_stat_names, | |
92 | ARRAY_SIZE(rds_ib_stat_names)); | |
93 | out: | |
94 | return ARRAY_SIZE(rds_ib_stat_names); | |
95 | } |