Mike Marciniszyn | ddb8876 | 2013-06-15 17:07:03 -0400 | [diff] [blame] | 1 | #ifdef CONFIG_DEBUG_FS |
| 2 | /* |
| 3 | * Copyright (c) 2013 Intel Corporation. All rights reserved. |
| 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the |
| 9 | * OpenIB.org BSD license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 19 | * - Redistributions in binary form must reproduce the above |
| 20 | * copyright notice, this list of conditions and the following |
| 21 | * disclaimer in the documentation and/or other materials |
| 22 | * provided with the distribution. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 31 | * SOFTWARE. |
| 32 | */ |
| 33 | #include <linux/debugfs.h> |
| 34 | #include <linux/seq_file.h> |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/export.h> |
| 37 | |
| 38 | #include "qib.h" |
| 39 | #include "qib_verbs.h" |
| 40 | #include "qib_debugfs.h" |
| 41 | |
| 42 | static struct dentry *qib_dbg_root; |
| 43 | |
| 44 | #define DEBUGFS_FILE(name) \ |
| 45 | static const struct seq_operations _##name##_seq_ops = { \ |
| 46 | .start = _##name##_seq_start, \ |
| 47 | .next = _##name##_seq_next, \ |
| 48 | .stop = _##name##_seq_stop, \ |
| 49 | .show = _##name##_seq_show \ |
| 50 | }; \ |
| 51 | static int _##name##_open(struct inode *inode, struct file *s) \ |
| 52 | { \ |
| 53 | struct seq_file *seq; \ |
| 54 | int ret; \ |
| 55 | ret = seq_open(s, &_##name##_seq_ops); \ |
| 56 | if (ret) \ |
| 57 | return ret; \ |
| 58 | seq = s->private_data; \ |
| 59 | seq->private = inode->i_private; \ |
| 60 | return 0; \ |
| 61 | } \ |
| 62 | static const struct file_operations _##name##_file_ops = { \ |
| 63 | .owner = THIS_MODULE, \ |
| 64 | .open = _##name##_open, \ |
| 65 | .read = seq_read, \ |
| 66 | .llseek = seq_lseek, \ |
| 67 | .release = seq_release \ |
| 68 | }; |
| 69 | |
| 70 | #define DEBUGFS_FILE_CREATE(name) \ |
| 71 | do { \ |
| 72 | struct dentry *ent; \ |
| 73 | ent = debugfs_create_file(#name , 0400, ibd->qib_ibdev_dbg, \ |
| 74 | ibd, &_##name##_file_ops); \ |
| 75 | if (!ent) \ |
| 76 | pr_warn("create of " #name " failed\n"); \ |
| 77 | } while (0) |
| 78 | |
| 79 | static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) |
| 80 | { |
| 81 | struct qib_opcode_stats_perctx *opstats; |
| 82 | |
| 83 | if (*pos >= ARRAY_SIZE(opstats->stats)) |
| 84 | return NULL; |
| 85 | return pos; |
| 86 | } |
| 87 | |
| 88 | static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) |
| 89 | { |
| 90 | struct qib_opcode_stats_perctx *opstats; |
| 91 | |
| 92 | ++*pos; |
| 93 | if (*pos >= ARRAY_SIZE(opstats->stats)) |
| 94 | return NULL; |
| 95 | return pos; |
| 96 | } |
| 97 | |
| 98 | |
| 99 | static void _opcode_stats_seq_stop(struct seq_file *s, void *v) |
| 100 | { |
| 101 | /* nothing allocated */ |
| 102 | } |
| 103 | |
| 104 | static int _opcode_stats_seq_show(struct seq_file *s, void *v) |
| 105 | { |
| 106 | loff_t *spos = v; |
| 107 | loff_t i = *spos, j; |
| 108 | u64 n_packets = 0, n_bytes = 0; |
| 109 | struct qib_ibdev *ibd = (struct qib_ibdev *)s->private; |
| 110 | struct qib_devdata *dd = dd_from_dev(ibd); |
| 111 | |
| 112 | for (j = 0; j < dd->first_user_ctxt; j++) { |
| 113 | if (!dd->rcd[j]) |
| 114 | continue; |
| 115 | n_packets += dd->rcd[j]->opstats->stats[i].n_packets; |
| 116 | n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes; |
| 117 | } |
| 118 | if (!n_packets && !n_bytes) |
| 119 | return SEQ_SKIP; |
| 120 | seq_printf(s, "%02llx %llu/%llu\n", i, |
| 121 | (unsigned long long) n_packets, |
| 122 | (unsigned long long) n_bytes); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | DEBUGFS_FILE(opcode_stats) |
| 128 | |
Mike Marciniszyn | 17db3a9 | 2013-06-15 17:07:09 -0400 | [diff] [blame] | 129 | static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos) |
| 130 | { |
| 131 | struct qib_ibdev *ibd = (struct qib_ibdev *)s->private; |
| 132 | struct qib_devdata *dd = dd_from_dev(ibd); |
| 133 | |
| 134 | if (!*pos) |
| 135 | return SEQ_START_TOKEN; |
| 136 | if (*pos >= dd->first_user_ctxt) |
| 137 | return NULL; |
| 138 | return pos; |
| 139 | } |
| 140 | |
| 141 | static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) |
| 142 | { |
| 143 | struct qib_ibdev *ibd = (struct qib_ibdev *)s->private; |
| 144 | struct qib_devdata *dd = dd_from_dev(ibd); |
| 145 | |
| 146 | if (v == SEQ_START_TOKEN) |
| 147 | return pos; |
| 148 | |
| 149 | ++*pos; |
| 150 | if (*pos >= dd->first_user_ctxt) |
| 151 | return NULL; |
| 152 | return pos; |
| 153 | } |
| 154 | |
| 155 | static void _ctx_stats_seq_stop(struct seq_file *s, void *v) |
| 156 | { |
| 157 | /* nothing allocated */ |
| 158 | } |
| 159 | |
| 160 | static int _ctx_stats_seq_show(struct seq_file *s, void *v) |
| 161 | { |
| 162 | loff_t *spos; |
| 163 | loff_t i, j; |
| 164 | u64 n_packets = 0; |
| 165 | struct qib_ibdev *ibd = (struct qib_ibdev *)s->private; |
| 166 | struct qib_devdata *dd = dd_from_dev(ibd); |
| 167 | |
| 168 | if (v == SEQ_START_TOKEN) { |
| 169 | seq_puts(s, "Ctx:npkts\n"); |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | spos = v; |
| 174 | i = *spos; |
| 175 | |
| 176 | if (!dd->rcd[i]) |
| 177 | return SEQ_SKIP; |
| 178 | |
| 179 | for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++) |
| 180 | n_packets += dd->rcd[i]->opstats->stats[j].n_packets; |
| 181 | |
| 182 | if (!n_packets) |
| 183 | return SEQ_SKIP; |
| 184 | |
| 185 | seq_printf(s, " %llu:%llu\n", i, n_packets); |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | DEBUGFS_FILE(ctx_stats) |
| 190 | |
Mike Marciniszyn | 1dd173b | 2013-06-15 17:07:14 -0400 | [diff] [blame] | 191 | static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos) |
| 192 | { |
| 193 | struct qib_qp_iter *iter; |
| 194 | loff_t n = *pos; |
| 195 | |
Mike Marciniszyn | 85cbb7c | 2014-09-19 08:32:19 -0400 | [diff] [blame] | 196 | rcu_read_lock(); |
Mike Marciniszyn | 1dd173b | 2013-06-15 17:07:14 -0400 | [diff] [blame] | 197 | iter = qib_qp_iter_init(s->private); |
| 198 | if (!iter) |
| 199 | return NULL; |
| 200 | |
| 201 | while (n--) { |
| 202 | if (qib_qp_iter_next(iter)) { |
| 203 | kfree(iter); |
| 204 | return NULL; |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | return iter; |
| 209 | } |
| 210 | |
| 211 | static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, |
| 212 | loff_t *pos) |
| 213 | { |
| 214 | struct qib_qp_iter *iter = iter_ptr; |
| 215 | |
| 216 | (*pos)++; |
| 217 | |
| 218 | if (qib_qp_iter_next(iter)) { |
| 219 | kfree(iter); |
| 220 | return NULL; |
| 221 | } |
| 222 | |
| 223 | return iter; |
| 224 | } |
| 225 | |
| 226 | static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr) |
| 227 | { |
Mike Marciniszyn | 85cbb7c | 2014-09-19 08:32:19 -0400 | [diff] [blame] | 228 | rcu_read_unlock(); |
Mike Marciniszyn | 1dd173b | 2013-06-15 17:07:14 -0400 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr) |
| 232 | { |
| 233 | struct qib_qp_iter *iter = iter_ptr; |
| 234 | |
| 235 | if (!iter) |
| 236 | return 0; |
| 237 | |
| 238 | qib_qp_iter_print(s, iter); |
| 239 | |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | DEBUGFS_FILE(qp_stats) |
| 244 | |
Mike Marciniszyn | ddb8876 | 2013-06-15 17:07:03 -0400 | [diff] [blame] | 245 | void qib_dbg_ibdev_init(struct qib_ibdev *ibd) |
| 246 | { |
| 247 | char name[10]; |
| 248 | |
| 249 | snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit); |
| 250 | ibd->qib_ibdev_dbg = debugfs_create_dir(name, qib_dbg_root); |
| 251 | if (!ibd->qib_ibdev_dbg) { |
| 252 | pr_warn("create of %s failed\n", name); |
| 253 | return; |
| 254 | } |
| 255 | DEBUGFS_FILE_CREATE(opcode_stats); |
Mike Marciniszyn | 17db3a9 | 2013-06-15 17:07:09 -0400 | [diff] [blame] | 256 | DEBUGFS_FILE_CREATE(ctx_stats); |
Mike Marciniszyn | 1dd173b | 2013-06-15 17:07:14 -0400 | [diff] [blame] | 257 | DEBUGFS_FILE_CREATE(qp_stats); |
Mike Marciniszyn | ddb8876 | 2013-06-15 17:07:03 -0400 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | void qib_dbg_ibdev_exit(struct qib_ibdev *ibd) |
| 261 | { |
| 262 | if (!qib_dbg_root) |
| 263 | goto out; |
| 264 | debugfs_remove_recursive(ibd->qib_ibdev_dbg); |
| 265 | out: |
| 266 | ibd->qib_ibdev_dbg = NULL; |
| 267 | } |
| 268 | |
| 269 | void qib_dbg_init(void) |
| 270 | { |
| 271 | qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL); |
| 272 | if (!qib_dbg_root) |
| 273 | pr_warn("init of debugfs failed\n"); |
| 274 | } |
| 275 | |
| 276 | void qib_dbg_exit(void) |
| 277 | { |
| 278 | debugfs_remove_recursive(qib_dbg_root); |
| 279 | qib_dbg_root = NULL; |
| 280 | } |
| 281 | |
| 282 | #endif |
| 283 | |