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1d09d737 JS |
1 | /* |
2 | * SN Platform GRU Driver | |
3 | * | |
4 | * PROC INTERFACES | |
5 | * | |
6 | * This file supports the /proc interfaces for the GRU driver | |
7 | * | |
8 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <linux/proc_fs.h> | |
26 | #include <linux/device.h> | |
27 | #include <linux/seq_file.h> | |
28 | #include <linux/uaccess.h> | |
29 | #include "gru.h" | |
30 | #include "grulib.h" | |
31 | #include "grutables.h" | |
32 | ||
33 | #define printstat(s, f) printstat_val(s, &gru_stats.f, #f) | |
34 | ||
35 | static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id) | |
36 | { | |
37 | unsigned long val = atomic_long_read(v); | |
38 | ||
39 | if (val) | |
40 | seq_printf(s, "%16lu %s\n", val, id); | |
41 | } | |
42 | ||
43 | static int statistics_show(struct seq_file *s, void *p) | |
44 | { | |
45 | printstat(s, vdata_alloc); | |
46 | printstat(s, vdata_free); | |
47 | printstat(s, gts_alloc); | |
48 | printstat(s, gts_free); | |
49 | printstat(s, vdata_double_alloc); | |
50 | printstat(s, gts_double_allocate); | |
51 | printstat(s, assign_context); | |
52 | printstat(s, assign_context_failed); | |
53 | printstat(s, free_context); | |
836ce679 JS |
54 | printstat(s, load_user_context); |
55 | printstat(s, load_kernel_context); | |
56 | printstat(s, lock_kernel_context); | |
57 | printstat(s, unlock_kernel_context); | |
58 | printstat(s, steal_user_context); | |
59 | printstat(s, steal_kernel_context); | |
1d09d737 JS |
60 | printstat(s, steal_context_failed); |
61 | printstat(s, nopfn); | |
62 | printstat(s, break_cow); | |
63 | printstat(s, asid_new); | |
64 | printstat(s, asid_next); | |
65 | printstat(s, asid_wrap); | |
66 | printstat(s, asid_reuse); | |
67 | printstat(s, intr); | |
43884604 | 68 | printstat(s, intr_mm_lock_failed); |
1d09d737 | 69 | printstat(s, call_os); |
43884604 | 70 | printstat(s, call_os_offnode_reference); |
1d09d737 JS |
71 | printstat(s, call_os_check_for_bug); |
72 | printstat(s, call_os_wait_queue); | |
73 | printstat(s, user_flush_tlb); | |
74 | printstat(s, user_unload_context); | |
75 | printstat(s, user_exception); | |
76 | printstat(s, set_task_slice); | |
77 | printstat(s, migrate_check); | |
78 | printstat(s, migrated_retarget); | |
79 | printstat(s, migrated_unload); | |
80 | printstat(s, migrated_unload_delay); | |
81 | printstat(s, migrated_nopfn_retarget); | |
82 | printstat(s, migrated_nopfn_unload); | |
83 | printstat(s, tlb_dropin); | |
84 | printstat(s, tlb_dropin_fail_no_asid); | |
85 | printstat(s, tlb_dropin_fail_upm); | |
86 | printstat(s, tlb_dropin_fail_invalid); | |
87 | printstat(s, tlb_dropin_fail_range_active); | |
88 | printstat(s, tlb_dropin_fail_idle); | |
89 | printstat(s, tlb_dropin_fail_fmm); | |
cd1334f0 JS |
90 | printstat(s, tlb_dropin_fail_no_exception); |
91 | printstat(s, tlb_dropin_fail_no_exception_war); | |
1d09d737 JS |
92 | printstat(s, mmu_invalidate_range); |
93 | printstat(s, mmu_invalidate_page); | |
94 | printstat(s, mmu_clear_flush_young); | |
95 | printstat(s, flush_tlb); | |
96 | printstat(s, flush_tlb_gru); | |
97 | printstat(s, flush_tlb_gru_tgh); | |
98 | printstat(s, flush_tlb_gru_zero_asid); | |
99 | printstat(s, copy_gpa); | |
100 | printstat(s, mesq_receive); | |
101 | printstat(s, mesq_receive_none); | |
102 | printstat(s, mesq_send); | |
103 | printstat(s, mesq_send_failed); | |
104 | printstat(s, mesq_noop); | |
105 | printstat(s, mesq_send_unexpected_error); | |
106 | printstat(s, mesq_send_lb_overflow); | |
107 | printstat(s, mesq_send_qlimit_reached); | |
108 | printstat(s, mesq_send_amo_nacked); | |
109 | printstat(s, mesq_send_put_nacked); | |
110 | printstat(s, mesq_qf_not_full); | |
111 | printstat(s, mesq_qf_locked); | |
112 | printstat(s, mesq_qf_noop_not_full); | |
113 | printstat(s, mesq_qf_switch_head_failed); | |
114 | printstat(s, mesq_qf_unexpected_error); | |
115 | printstat(s, mesq_noop_unexpected_error); | |
116 | printstat(s, mesq_noop_lb_overflow); | |
117 | printstat(s, mesq_noop_qlimit_reached); | |
118 | printstat(s, mesq_noop_amo_nacked); | |
119 | printstat(s, mesq_noop_put_nacked); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static ssize_t statistics_write(struct file *file, const char __user *userbuf, | |
124 | size_t count, loff_t *data) | |
125 | { | |
126 | memset(&gru_stats, 0, sizeof(gru_stats)); | |
127 | return count; | |
128 | } | |
129 | ||
e56484da JS |
130 | static int mcs_statistics_show(struct seq_file *s, void *p) |
131 | { | |
132 | int op; | |
133 | unsigned long total, count, max; | |
134 | static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt", | |
135 | "cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"}; | |
136 | ||
137 | for (op = 0; op < mcsop_last; op++) { | |
138 | count = atomic_long_read(&mcs_op_statistics[op].count); | |
139 | total = atomic_long_read(&mcs_op_statistics[op].total); | |
140 | max = mcs_op_statistics[op].max; | |
141 | seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, | |
142 | count ? total / count : 0, max); | |
143 | } | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static ssize_t mcs_statistics_write(struct file *file, | |
148 | const char __user *userbuf, size_t count, loff_t *data) | |
149 | { | |
150 | memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics)); | |
151 | return count; | |
152 | } | |
153 | ||
1d09d737 JS |
154 | static int options_show(struct seq_file *s, void *p) |
155 | { | |
9ca8e40c | 156 | seq_printf(s, "0x%lx\n", gru_options); |
1d09d737 JS |
157 | return 0; |
158 | } | |
159 | ||
160 | static ssize_t options_write(struct file *file, const char __user *userbuf, | |
161 | size_t count, loff_t *data) | |
162 | { | |
163 | unsigned long val; | |
164 | char buf[80]; | |
165 | ||
cd1334f0 | 166 | if (strncpy_from_user(buf, userbuf, sizeof(buf) - 1) < 0) |
1d09d737 | 167 | return -EFAULT; |
e56484da | 168 | buf[count - 1] = '\0'; |
1d09d737 | 169 | if (!strict_strtoul(buf, 10, &val)) |
9ca8e40c | 170 | gru_options = val; |
1d09d737 JS |
171 | |
172 | return count; | |
173 | } | |
174 | ||
175 | static int cch_seq_show(struct seq_file *file, void *data) | |
176 | { | |
177 | long gid = *(long *)data; | |
178 | int i; | |
179 | struct gru_state *gru = GID_TO_GRU(gid); | |
180 | struct gru_thread_state *ts; | |
181 | const char *mode[] = { "??", "UPM", "INTR", "OS_POLL" }; | |
182 | ||
183 | if (gid == 0) | |
184 | seq_printf(file, "#%5s%5s%6s%9s%6s%8s%8s\n", "gid", "bid", | |
185 | "ctx#", "pid", "cbrs", "dsbytes", "mode"); | |
186 | if (gru) | |
187 | for (i = 0; i < GRU_NUM_CCH; i++) { | |
188 | ts = gru->gs_gts[i]; | |
189 | if (!ts) | |
190 | continue; | |
191 | seq_printf(file, " %5d%5d%6d%9d%6d%8d%8s\n", | |
192 | gru->gs_gid, gru->gs_blade_id, i, | |
193 | ts->ts_tgid_owner, | |
194 | ts->ts_cbr_au_count * GRU_CBR_AU_SIZE, | |
195 | ts->ts_cbr_au_count * GRU_DSR_AU_BYTES, | |
196 | mode[ts->ts_user_options & | |
197 | GRU_OPT_MISS_MASK]); | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static int gru_seq_show(struct seq_file *file, void *data) | |
204 | { | |
205 | long gid = *(long *)data, ctxfree, cbrfree, dsrfree; | |
206 | struct gru_state *gru = GID_TO_GRU(gid); | |
207 | ||
208 | if (gid == 0) { | |
209 | seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "gid", "nid", | |
210 | "ctx", "cbr", "dsr", "ctx", "cbr", "dsr"); | |
211 | seq_printf(file, "#%5s%5s%7s%6s%6s%8s%6s%6s\n", "", "", "busy", | |
212 | "busy", "busy", "free", "free", "free"); | |
213 | } | |
214 | if (gru) { | |
215 | ctxfree = GRU_NUM_CCH - gru->gs_active_contexts; | |
216 | cbrfree = hweight64(gru->gs_cbr_map) * GRU_CBR_AU_SIZE; | |
217 | dsrfree = hweight64(gru->gs_dsr_map) * GRU_DSR_AU_BYTES; | |
218 | seq_printf(file, " %5d%5d%7ld%6ld%6ld%8ld%6ld%6ld\n", | |
219 | gru->gs_gid, gru->gs_blade_id, GRU_NUM_CCH - ctxfree, | |
220 | GRU_NUM_CBE - cbrfree, GRU_NUM_DSR_BYTES - dsrfree, | |
221 | ctxfree, cbrfree, dsrfree); | |
222 | } | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static void seq_stop(struct seq_file *file, void *data) | |
228 | { | |
229 | } | |
230 | ||
231 | static void *seq_start(struct seq_file *file, loff_t *gid) | |
232 | { | |
e1c3219d | 233 | if (*gid < gru_max_gids) |
1d09d737 JS |
234 | return gid; |
235 | return NULL; | |
236 | } | |
237 | ||
238 | static void *seq_next(struct seq_file *file, void *data, loff_t *gid) | |
239 | { | |
240 | (*gid)++; | |
e1c3219d | 241 | if (*gid < gru_max_gids) |
1d09d737 JS |
242 | return gid; |
243 | return NULL; | |
244 | } | |
245 | ||
246 | static const struct seq_operations cch_seq_ops = { | |
247 | .start = seq_start, | |
248 | .next = seq_next, | |
249 | .stop = seq_stop, | |
250 | .show = cch_seq_show | |
251 | }; | |
252 | ||
253 | static const struct seq_operations gru_seq_ops = { | |
254 | .start = seq_start, | |
255 | .next = seq_next, | |
256 | .stop = seq_stop, | |
257 | .show = gru_seq_show | |
258 | }; | |
259 | ||
260 | static int statistics_open(struct inode *inode, struct file *file) | |
261 | { | |
262 | return single_open(file, statistics_show, NULL); | |
263 | } | |
264 | ||
e56484da JS |
265 | static int mcs_statistics_open(struct inode *inode, struct file *file) |
266 | { | |
267 | return single_open(file, mcs_statistics_show, NULL); | |
268 | } | |
269 | ||
1d09d737 JS |
270 | static int options_open(struct inode *inode, struct file *file) |
271 | { | |
272 | return single_open(file, options_show, NULL); | |
273 | } | |
274 | ||
275 | static int cch_open(struct inode *inode, struct file *file) | |
276 | { | |
277 | return seq_open(file, &cch_seq_ops); | |
278 | } | |
279 | ||
280 | static int gru_open(struct inode *inode, struct file *file) | |
281 | { | |
282 | return seq_open(file, &gru_seq_ops); | |
283 | } | |
284 | ||
285 | /* *INDENT-OFF* */ | |
286 | static const struct file_operations statistics_fops = { | |
287 | .open = statistics_open, | |
288 | .read = seq_read, | |
289 | .write = statistics_write, | |
290 | .llseek = seq_lseek, | |
291 | .release = single_release, | |
292 | }; | |
293 | ||
e56484da JS |
294 | static const struct file_operations mcs_statistics_fops = { |
295 | .open = mcs_statistics_open, | |
296 | .read = seq_read, | |
297 | .write = mcs_statistics_write, | |
298 | .llseek = seq_lseek, | |
299 | .release = single_release, | |
300 | }; | |
301 | ||
1d09d737 JS |
302 | static const struct file_operations options_fops = { |
303 | .open = options_open, | |
304 | .read = seq_read, | |
305 | .write = options_write, | |
306 | .llseek = seq_lseek, | |
307 | .release = single_release, | |
308 | }; | |
309 | ||
310 | static const struct file_operations cch_fops = { | |
311 | .open = cch_open, | |
312 | .read = seq_read, | |
313 | .llseek = seq_lseek, | |
314 | .release = seq_release, | |
315 | }; | |
316 | static const struct file_operations gru_fops = { | |
317 | .open = gru_open, | |
318 | .read = seq_read, | |
319 | .llseek = seq_lseek, | |
320 | .release = seq_release, | |
321 | }; | |
322 | ||
323 | static struct proc_entry { | |
324 | char *name; | |
325 | int mode; | |
326 | const struct file_operations *fops; | |
327 | struct proc_dir_entry *entry; | |
328 | } proc_files[] = { | |
329 | {"statistics", 0644, &statistics_fops}, | |
e56484da | 330 | {"mcs_statistics", 0644, &mcs_statistics_fops}, |
1d09d737 JS |
331 | {"debug_options", 0644, &options_fops}, |
332 | {"cch_status", 0444, &cch_fops}, | |
333 | {"gru_status", 0444, &gru_fops}, | |
334 | {NULL} | |
335 | }; | |
336 | /* *INDENT-ON* */ | |
337 | ||
338 | static struct proc_dir_entry *proc_gru __read_mostly; | |
339 | ||
340 | static int create_proc_file(struct proc_entry *p) | |
341 | { | |
342 | p->entry = create_proc_entry(p->name, p->mode, proc_gru); | |
343 | if (!p->entry) | |
344 | return -1; | |
345 | p->entry->proc_fops = p->fops; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | static void delete_proc_files(void) | |
350 | { | |
351 | struct proc_entry *p; | |
352 | ||
353 | if (proc_gru) { | |
354 | for (p = proc_files; p->name; p++) | |
355 | if (p->entry) | |
356 | remove_proc_entry(p->name, proc_gru); | |
357 | remove_proc_entry("gru", NULL); | |
358 | } | |
359 | } | |
360 | ||
361 | int gru_proc_init(void) | |
362 | { | |
363 | struct proc_entry *p; | |
364 | ||
1d09d737 JS |
365 | proc_gru = proc_mkdir("sgi_uv/gru", NULL); |
366 | ||
367 | for (p = proc_files; p->name; p++) | |
368 | if (create_proc_file(p)) | |
369 | goto err; | |
370 | return 0; | |
371 | ||
372 | err: | |
373 | delete_proc_files(); | |
374 | return -1; | |
375 | } | |
376 | ||
377 | void gru_proc_exit(void) | |
378 | { | |
379 | delete_proc_files(); | |
380 | } |