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1/*
2 * Copyright (c) 2013 - 2017 Intel Corporation. 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#include <linux/debugfs.h>
33#include <linux/seq_file.h>
34#include <linux/kernel.h>
35#include <linux/export.h>
36
37#include "qib.h"
38#include "qib_verbs.h"
39#include "qib_debugfs.h"
40
41static struct dentry *qib_dbg_root;
42
43#define DEBUGFS_FILE(name) \
44static const struct seq_operations _##name##_seq_ops = { \
45 .start = _##name##_seq_start, \
46 .next = _##name##_seq_next, \
47 .stop = _##name##_seq_stop, \
48 .show = _##name##_seq_show \
49}; \
50static int _##name##_open(struct inode *inode, struct file *s) \
51{ \
52 struct seq_file *seq; \
53 int ret; \
54 ret = seq_open(s, &_##name##_seq_ops); \
55 if (ret) \
56 return ret; \
57 seq = s->private_data; \
58 seq->private = inode->i_private; \
59 return 0; \
60} \
61static const struct file_operations _##name##_file_ops = { \
62 .owner = THIS_MODULE, \
63 .open = _##name##_open, \
64 .read = seq_read, \
65 .llseek = seq_lseek, \
66 .release = seq_release \
67};
68
69static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
70{
71 struct qib_opcode_stats_perctx *opstats;
72
73 if (*pos >= ARRAY_SIZE(opstats->stats))
74 return NULL;
75 return pos;
76}
77
78static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
79{
80 struct qib_opcode_stats_perctx *opstats;
81
82 ++*pos;
83 if (*pos >= ARRAY_SIZE(opstats->stats))
84 return NULL;
85 return pos;
86}
87
88
89static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
90{
91 /* nothing allocated */
92}
93
94static int _opcode_stats_seq_show(struct seq_file *s, void *v)
95{
96 loff_t *spos = v;
97 loff_t i = *spos, j;
98 u64 n_packets = 0, n_bytes = 0;
99 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
100 struct qib_devdata *dd = dd_from_dev(ibd);
101
102 for (j = 0; j < dd->first_user_ctxt; j++) {
103 if (!dd->rcd[j])
104 continue;
105 n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
106 n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
107 }
108 if (!n_packets && !n_bytes)
109 return SEQ_SKIP;
110 seq_printf(s, "%02llx %llu/%llu\n", i,
111 (unsigned long long) n_packets,
112 (unsigned long long) n_bytes);
113
114 return 0;
115}
116
117DEBUGFS_FILE(opcode_stats)
118
119static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
120{
121 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
122 struct qib_devdata *dd = dd_from_dev(ibd);
123
124 if (!*pos)
125 return SEQ_START_TOKEN;
126 if (*pos >= dd->first_user_ctxt)
127 return NULL;
128 return pos;
129}
130
131static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
132{
133 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
134 struct qib_devdata *dd = dd_from_dev(ibd);
135
136 if (v == SEQ_START_TOKEN)
137 return pos;
138
139 ++*pos;
140 if (*pos >= dd->first_user_ctxt)
141 return NULL;
142 return pos;
143}
144
145static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
146{
147 /* nothing allocated */
148}
149
150static int _ctx_stats_seq_show(struct seq_file *s, void *v)
151{
152 loff_t *spos;
153 loff_t i, j;
154 u64 n_packets = 0;
155 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
156 struct qib_devdata *dd = dd_from_dev(ibd);
157
158 if (v == SEQ_START_TOKEN) {
159 seq_puts(s, "Ctx:npkts\n");
160 return 0;
161 }
162
163 spos = v;
164 i = *spos;
165
166 if (!dd->rcd[i])
167 return SEQ_SKIP;
168
169 for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
170 n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
171
172 if (!n_packets)
173 return SEQ_SKIP;
174
175 seq_printf(s, " %llu:%llu\n", i, n_packets);
176 return 0;
177}
178
179DEBUGFS_FILE(ctx_stats)
180
181static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
182 __acquires(RCU)
183{
184 struct rvt_qp_iter *iter;
185 loff_t n = *pos;
186
187 iter = rvt_qp_iter_init(s->private, 0, NULL);
188
189 /* stop calls rcu_read_unlock */
190 rcu_read_lock();
191
192 if (!iter)
193 return NULL;
194
195 do {
196 if (rvt_qp_iter_next(iter)) {
197 kfree(iter);
198 return NULL;
199 }
200 } while (n--);
201
202 return iter;
203}
204
205static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
206 loff_t *pos)
207 __must_hold(RCU)
208{
209 struct rvt_qp_iter *iter = iter_ptr;
210
211 (*pos)++;
212
213 if (rvt_qp_iter_next(iter)) {
214 kfree(iter);
215 return NULL;
216 }
217
218 return iter;
219}
220
221static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
222 __releases(RCU)
223{
224 rcu_read_unlock();
225}
226
227static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
228{
229 struct rvt_qp_iter *iter = iter_ptr;
230
231 if (!iter)
232 return 0;
233
234 qib_qp_iter_print(s, iter);
235
236 return 0;
237}
238
239DEBUGFS_FILE(qp_stats)
240
241void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
242{
243 struct dentry *root;
244 char name[10];
245
246 snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
247 root = debugfs_create_dir(name, qib_dbg_root);
248 ibd->qib_ibdev_dbg = root;
249
250 debugfs_create_file("opcode_stats", 0400, root, ibd,
251 &_opcode_stats_file_ops);
252 debugfs_create_file("ctx_stats", 0400, root, ibd, &_ctx_stats_file_ops);
253 debugfs_create_file("qp_stats", 0400, root, ibd, &_qp_stats_file_ops);
254}
255
256void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
257{
258 if (!qib_dbg_root)
259 goto out;
260 debugfs_remove_recursive(ibd->qib_ibdev_dbg);
261out:
262 ibd->qib_ibdev_dbg = NULL;
263}
264
265void qib_dbg_init(void)
266{
267 qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
268}
269
270void qib_dbg_exit(void)
271{
272 debugfs_remove_recursive(qib_dbg_root);
273 qib_dbg_root = NULL;
274}
1/*
2 * Copyright (c) 2013 - 2017 Intel Corporation. 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#include <linux/debugfs.h>
33#include <linux/seq_file.h>
34#include <linux/kernel.h>
35#include <linux/export.h>
36
37#include "qib.h"
38#include "qib_verbs.h"
39#include "qib_debugfs.h"
40
41static struct dentry *qib_dbg_root;
42
43#define DEBUGFS_FILE(name) \
44static const struct seq_operations _##name##_seq_ops = { \
45 .start = _##name##_seq_start, \
46 .next = _##name##_seq_next, \
47 .stop = _##name##_seq_stop, \
48 .show = _##name##_seq_show \
49}; \
50static int _##name##_open(struct inode *inode, struct file *s) \
51{ \
52 struct seq_file *seq; \
53 int ret; \
54 ret = seq_open(s, &_##name##_seq_ops); \
55 if (ret) \
56 return ret; \
57 seq = s->private_data; \
58 seq->private = inode->i_private; \
59 return 0; \
60} \
61static const struct file_operations _##name##_file_ops = { \
62 .owner = THIS_MODULE, \
63 .open = _##name##_open, \
64 .read = seq_read, \
65 .llseek = seq_lseek, \
66 .release = seq_release \
67};
68
69#define DEBUGFS_FILE_CREATE(name) \
70do { \
71 struct dentry *ent; \
72 ent = debugfs_create_file(#name , 0400, ibd->qib_ibdev_dbg, \
73 ibd, &_##name##_file_ops); \
74 if (!ent) \
75 pr_warn("create of " #name " failed\n"); \
76} while (0)
77
78static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
79{
80 struct qib_opcode_stats_perctx *opstats;
81
82 if (*pos >= ARRAY_SIZE(opstats->stats))
83 return NULL;
84 return pos;
85}
86
87static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
88{
89 struct qib_opcode_stats_perctx *opstats;
90
91 ++*pos;
92 if (*pos >= ARRAY_SIZE(opstats->stats))
93 return NULL;
94 return pos;
95}
96
97
98static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
99{
100 /* nothing allocated */
101}
102
103static int _opcode_stats_seq_show(struct seq_file *s, void *v)
104{
105 loff_t *spos = v;
106 loff_t i = *spos, j;
107 u64 n_packets = 0, n_bytes = 0;
108 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
109 struct qib_devdata *dd = dd_from_dev(ibd);
110
111 for (j = 0; j < dd->first_user_ctxt; j++) {
112 if (!dd->rcd[j])
113 continue;
114 n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
115 n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
116 }
117 if (!n_packets && !n_bytes)
118 return SEQ_SKIP;
119 seq_printf(s, "%02llx %llu/%llu\n", i,
120 (unsigned long long) n_packets,
121 (unsigned long long) n_bytes);
122
123 return 0;
124}
125
126DEBUGFS_FILE(opcode_stats)
127
128static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
129{
130 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
131 struct qib_devdata *dd = dd_from_dev(ibd);
132
133 if (!*pos)
134 return SEQ_START_TOKEN;
135 if (*pos >= dd->first_user_ctxt)
136 return NULL;
137 return pos;
138}
139
140static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
141{
142 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
143 struct qib_devdata *dd = dd_from_dev(ibd);
144
145 if (v == SEQ_START_TOKEN)
146 return pos;
147
148 ++*pos;
149 if (*pos >= dd->first_user_ctxt)
150 return NULL;
151 return pos;
152}
153
154static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
155{
156 /* nothing allocated */
157}
158
159static int _ctx_stats_seq_show(struct seq_file *s, void *v)
160{
161 loff_t *spos;
162 loff_t i, j;
163 u64 n_packets = 0;
164 struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
165 struct qib_devdata *dd = dd_from_dev(ibd);
166
167 if (v == SEQ_START_TOKEN) {
168 seq_puts(s, "Ctx:npkts\n");
169 return 0;
170 }
171
172 spos = v;
173 i = *spos;
174
175 if (!dd->rcd[i])
176 return SEQ_SKIP;
177
178 for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
179 n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
180
181 if (!n_packets)
182 return SEQ_SKIP;
183
184 seq_printf(s, " %llu:%llu\n", i, n_packets);
185 return 0;
186}
187
188DEBUGFS_FILE(ctx_stats)
189
190static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
191 __acquires(RCU)
192{
193 struct rvt_qp_iter *iter;
194 loff_t n = *pos;
195
196 iter = rvt_qp_iter_init(s->private, 0, NULL);
197
198 /* stop calls rcu_read_unlock */
199 rcu_read_lock();
200
201 if (!iter)
202 return NULL;
203
204 do {
205 if (rvt_qp_iter_next(iter)) {
206 kfree(iter);
207 return NULL;
208 }
209 } while (n--);
210
211 return iter;
212}
213
214static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
215 loff_t *pos)
216 __must_hold(RCU)
217{
218 struct rvt_qp_iter *iter = iter_ptr;
219
220 (*pos)++;
221
222 if (rvt_qp_iter_next(iter)) {
223 kfree(iter);
224 return NULL;
225 }
226
227 return iter;
228}
229
230static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
231 __releases(RCU)
232{
233 rcu_read_unlock();
234}
235
236static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
237{
238 struct rvt_qp_iter *iter = iter_ptr;
239
240 if (!iter)
241 return 0;
242
243 qib_qp_iter_print(s, iter);
244
245 return 0;
246}
247
248DEBUGFS_FILE(qp_stats)
249
250void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
251{
252 char name[10];
253
254 snprintf(name, sizeof(name), "qib%d", dd_from_dev(ibd)->unit);
255 ibd->qib_ibdev_dbg = debugfs_create_dir(name, qib_dbg_root);
256 if (!ibd->qib_ibdev_dbg) {
257 pr_warn("create of %s failed\n", name);
258 return;
259 }
260 DEBUGFS_FILE_CREATE(opcode_stats);
261 DEBUGFS_FILE_CREATE(ctx_stats);
262 DEBUGFS_FILE_CREATE(qp_stats);
263}
264
265void qib_dbg_ibdev_exit(struct qib_ibdev *ibd)
266{
267 if (!qib_dbg_root)
268 goto out;
269 debugfs_remove_recursive(ibd->qib_ibdev_dbg);
270out:
271 ibd->qib_ibdev_dbg = NULL;
272}
273
274void qib_dbg_init(void)
275{
276 qib_dbg_root = debugfs_create_dir(QIB_DRV_NAME, NULL);
277 if (!qib_dbg_root)
278 pr_warn("init of debugfs failed\n");
279}
280
281void qib_dbg_exit(void)
282{
283 debugfs_remove_recursive(qib_dbg_root);
284 qib_dbg_root = NULL;
285}