tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
3
4#include <linux/module.h>
5#include <linux/kernel.h>
6#include <linux/highmem.h>
7#include <linux/mm.h>
8#include <linux/slab.h>
9#include <linux/delay.h>
10#include <linux/smp.h>
11#include <uapi/linux/idxd.h>
12#include <linux/idxd.h>
13#include <linux/dmaengine.h>
14#include "../../dma/idxd/idxd.h"
15#include <linux/debugfs.h>
16#include <crypto/internal/acompress.h>
17#include "iaa_crypto.h"
18#include "iaa_crypto_stats.h"
19
20static atomic64_t total_comp_calls;
21static atomic64_t total_decomp_calls;
22static atomic64_t total_sw_decomp_calls;
23static atomic64_t total_comp_bytes_out;
24static atomic64_t total_decomp_bytes_in;
25static atomic64_t total_completion_einval_errors;
26static atomic64_t total_completion_timeout_errors;
27static atomic64_t total_completion_comp_buf_overflow_errors;
28
29static struct dentry *iaa_crypto_debugfs_root;
30
31void update_total_comp_calls(void)
32{
33 atomic64_inc(&total_comp_calls);
34}
35
36void update_total_comp_bytes_out(int n)
37{
38 atomic64_add(n, &total_comp_bytes_out);
39}
40
41void update_total_decomp_calls(void)
42{
43 atomic64_inc(&total_decomp_calls);
44}
45
46void update_total_sw_decomp_calls(void)
47{
48 atomic64_inc(&total_sw_decomp_calls);
49}
50
51void update_total_decomp_bytes_in(int n)
52{
53 atomic64_add(n, &total_decomp_bytes_in);
54}
55
56void update_completion_einval_errs(void)
57{
58 atomic64_inc(&total_completion_einval_errors);
59}
60
61void update_completion_timeout_errs(void)
62{
63 atomic64_inc(&total_completion_timeout_errors);
64}
65
66void update_completion_comp_buf_overflow_errs(void)
67{
68 atomic64_inc(&total_completion_comp_buf_overflow_errors);
69}
70
71void update_wq_comp_calls(struct idxd_wq *idxd_wq)
72{
73 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
74
75 atomic64_inc(&wq->comp_calls);
76 atomic64_inc(&wq->iaa_device->comp_calls);
77}
78
79void update_wq_comp_bytes(struct idxd_wq *idxd_wq, int n)
80{
81 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
82
83 atomic64_add(n, &wq->comp_bytes);
84 atomic64_add(n, &wq->iaa_device->comp_bytes);
85}
86
87void update_wq_decomp_calls(struct idxd_wq *idxd_wq)
88{
89 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
90
91 atomic64_inc(&wq->decomp_calls);
92 atomic64_inc(&wq->iaa_device->decomp_calls);
93}
94
95void update_wq_decomp_bytes(struct idxd_wq *idxd_wq, int n)
96{
97 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
98
99 atomic64_add(n, &wq->decomp_bytes);
100 atomic64_add(n, &wq->iaa_device->decomp_bytes);
101}
102
103static void reset_iaa_crypto_stats(void)
104{
105 atomic64_set(&total_comp_calls, 0);
106 atomic64_set(&total_decomp_calls, 0);
107 atomic64_set(&total_sw_decomp_calls, 0);
108 atomic64_set(&total_comp_bytes_out, 0);
109 atomic64_set(&total_decomp_bytes_in, 0);
110 atomic64_set(&total_completion_einval_errors, 0);
111 atomic64_set(&total_completion_timeout_errors, 0);
112 atomic64_set(&total_completion_comp_buf_overflow_errors, 0);
113}
114
115static void reset_wq_stats(struct iaa_wq *wq)
116{
117 atomic64_set(&wq->comp_calls, 0);
118 atomic64_set(&wq->comp_bytes, 0);
119 atomic64_set(&wq->decomp_calls, 0);
120 atomic64_set(&wq->decomp_bytes, 0);
121}
122
123static void reset_device_stats(struct iaa_device *iaa_device)
124{
125 struct iaa_wq *iaa_wq;
126
127 atomic64_set(&iaa_device->comp_calls, 0);
128 atomic64_set(&iaa_device->comp_bytes, 0);
129 atomic64_set(&iaa_device->decomp_calls, 0);
130 atomic64_set(&iaa_device->decomp_bytes, 0);
131
132 list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
133 reset_wq_stats(iaa_wq);
134}
135
136static void wq_show(struct seq_file *m, struct iaa_wq *iaa_wq)
137{
138 seq_printf(m, " name: %s\n", iaa_wq->wq->name);
139 seq_printf(m, " comp_calls: %llu\n",
140 atomic64_read(&iaa_wq->comp_calls));
141 seq_printf(m, " comp_bytes: %llu\n",
142 atomic64_read(&iaa_wq->comp_bytes));
143 seq_printf(m, " decomp_calls: %llu\n",
144 atomic64_read(&iaa_wq->decomp_calls));
145 seq_printf(m, " decomp_bytes: %llu\n\n",
146 atomic64_read(&iaa_wq->decomp_bytes));
147}
148
149static void device_stats_show(struct seq_file *m, struct iaa_device *iaa_device)
150{
151 struct iaa_wq *iaa_wq;
152
153 seq_puts(m, "iaa device:\n");
154 seq_printf(m, " id: %d\n", iaa_device->idxd->id);
155 seq_printf(m, " n_wqs: %d\n", iaa_device->n_wq);
156 seq_printf(m, " comp_calls: %llu\n",
157 atomic64_read(&iaa_device->comp_calls));
158 seq_printf(m, " comp_bytes: %llu\n",
159 atomic64_read(&iaa_device->comp_bytes));
160 seq_printf(m, " decomp_calls: %llu\n",
161 atomic64_read(&iaa_device->decomp_calls));
162 seq_printf(m, " decomp_bytes: %llu\n",
163 atomic64_read(&iaa_device->decomp_bytes));
164 seq_puts(m, " wqs:\n");
165
166 list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
167 wq_show(m, iaa_wq);
168}
169
170static int global_stats_show(struct seq_file *m, void *v)
171{
172 seq_puts(m, "global stats:\n");
173 seq_printf(m, " total_comp_calls: %llu\n",
174 atomic64_read(&total_comp_calls));
175 seq_printf(m, " total_decomp_calls: %llu\n",
176 atomic64_read(&total_decomp_calls));
177 seq_printf(m, " total_sw_decomp_calls: %llu\n",
178 atomic64_read(&total_sw_decomp_calls));
179 seq_printf(m, " total_comp_bytes_out: %llu\n",
180 atomic64_read(&total_comp_bytes_out));
181 seq_printf(m, " total_decomp_bytes_in: %llu\n",
182 atomic64_read(&total_decomp_bytes_in));
183 seq_printf(m, " total_completion_einval_errors: %llu\n",
184 atomic64_read(&total_completion_einval_errors));
185 seq_printf(m, " total_completion_timeout_errors: %llu\n",
186 atomic64_read(&total_completion_timeout_errors));
187 seq_printf(m, " total_completion_comp_buf_overflow_errors: %llu\n\n",
188 atomic64_read(&total_completion_comp_buf_overflow_errors));
189
190 return 0;
191}
192
193static int wq_stats_show(struct seq_file *m, void *v)
194{
195 struct iaa_device *iaa_device;
196
197 mutex_lock(&iaa_devices_lock);
198
199 list_for_each_entry(iaa_device, &iaa_devices, list)
200 device_stats_show(m, iaa_device);
201
202 mutex_unlock(&iaa_devices_lock);
203
204 return 0;
205}
206
207static int iaa_crypto_stats_reset(void *data, u64 value)
208{
209 struct iaa_device *iaa_device;
210
211 reset_iaa_crypto_stats();
212
213 mutex_lock(&iaa_devices_lock);
214
215 list_for_each_entry(iaa_device, &iaa_devices, list)
216 reset_device_stats(iaa_device);
217
218 mutex_unlock(&iaa_devices_lock);
219
220 return 0;
221}
222
223static int wq_stats_open(struct inode *inode, struct file *file)
224{
225 return single_open(file, wq_stats_show, file);
226}
227
228static const struct file_operations wq_stats_fops = {
229 .open = wq_stats_open,
230 .read = seq_read,
231 .llseek = seq_lseek,
232 .release = single_release,
233};
234
235static int global_stats_open(struct inode *inode, struct file *file)
236{
237 return single_open(file, global_stats_show, file);
238}
239
240static const struct file_operations global_stats_fops = {
241 .open = global_stats_open,
242 .read = seq_read,
243 .llseek = seq_lseek,
244 .release = single_release,
245};
246
247DEFINE_DEBUGFS_ATTRIBUTE(wq_stats_reset_fops, NULL, iaa_crypto_stats_reset, "%llu\n");
248
249int __init iaa_crypto_debugfs_init(void)
250{
251 if (!debugfs_initialized())
252 return -ENODEV;
253
254 iaa_crypto_debugfs_root = debugfs_create_dir("iaa_crypto", NULL);
255
256 debugfs_create_file("global_stats", 0644, iaa_crypto_debugfs_root, NULL,
257 &global_stats_fops);
258 debugfs_create_file("wq_stats", 0644, iaa_crypto_debugfs_root, NULL,
259 &wq_stats_fops);
260 debugfs_create_file("stats_reset", 0644, iaa_crypto_debugfs_root, NULL,
261 &wq_stats_reset_fops);
262
263 return 0;
264}
265
266void __exit iaa_crypto_debugfs_cleanup(void)
267{
268 debugfs_remove_recursive(iaa_crypto_debugfs_root);
269}
270
271MODULE_LICENSE("GPL");