1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * Copyright IBM Corp. 2001, 2009 |
4 | * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, |
5 | * Martin Schwidefsky <schwidefsky@de.ibm.com>, |
6 | */ |
7 | |
8 | #include <linux/debugfs.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/mm.h> |
11 | #include <linux/proc_fs.h> |
12 | #include <linux/seq_file.h> |
13 | #include <linux/init.h> |
14 | #include <linux/delay.h> |
15 | #include <linux/export.h> |
16 | #include <linux/slab.h> |
17 | #include <asm/asm-extable.h> |
18 | #include <asm/ebcdic.h> |
19 | #include <asm/debug.h> |
20 | #include <asm/sysinfo.h> |
21 | #include <asm/cpcmd.h> |
22 | #include <asm/topology.h> |
23 | #include <asm/fpu.h> |
24 | |
25 | int topology_max_mnest; |
26 | |
27 | static inline int __stsi(void *sysinfo, int fc, int sel1, int sel2, int *lvl) |
28 | { |
29 | int r0 = (fc << 28) | sel1; |
30 | int rc = 0; |
31 | |
32 | asm volatile( |
33 | " lr 0,%[r0]\n" |
34 | " lr 1,%[r1]\n" |
35 | " stsi 0(%[sysinfo])\n" |
36 | "0: jz 2f\n" |
37 | "1: lhi %[rc],%[retval]\n" |
38 | "2: lr %[r0],0\n" |
39 | EX_TABLE(0b, 1b) |
40 | : [r0] "+d" (r0), [rc] "+d" (rc) |
41 | : [r1] "d" (sel2), |
42 | [sysinfo] "a" (sysinfo), |
43 | [retval] "K" (-EOPNOTSUPP) |
44 | : "cc" , "0" , "1" , "memory" ); |
45 | *lvl = ((unsigned int) r0) >> 28; |
46 | return rc; |
47 | } |
48 | |
49 | /* |
50 | * stsi - store system information |
51 | * |
52 | * Returns the current configuration level if function code 0 was specified. |
53 | * Otherwise returns 0 on success or a negative value on error. |
54 | */ |
55 | int stsi(void *sysinfo, int fc, int sel1, int sel2) |
56 | { |
57 | int lvl, rc; |
58 | |
59 | rc = __stsi(sysinfo, fc, sel1, sel2, lvl: &lvl); |
60 | if (rc) |
61 | return rc; |
62 | return fc ? 0 : lvl; |
63 | } |
64 | EXPORT_SYMBOL(stsi); |
65 | |
66 | #ifdef CONFIG_PROC_FS |
67 | |
68 | static bool convert_ext_name(unsigned char encoding, char *name, size_t len) |
69 | { |
70 | switch (encoding) { |
71 | case 1: /* EBCDIC */ |
72 | EBCASC(name, len); |
73 | break; |
74 | case 2: /* UTF-8 */ |
75 | break; |
76 | default: |
77 | return false; |
78 | } |
79 | return true; |
80 | } |
81 | |
82 | static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info) |
83 | { |
84 | bool has_var_cap; |
85 | int i; |
86 | |
87 | if (stsi(info, 1, 1, 1)) |
88 | return; |
89 | has_var_cap = !!info->model_var_cap[0]; |
90 | EBCASC(info->manufacturer, sizeof(info->manufacturer)); |
91 | EBCASC(info->type, sizeof(info->type)); |
92 | EBCASC(info->model, sizeof(info->model)); |
93 | EBCASC(info->sequence, sizeof(info->sequence)); |
94 | EBCASC(info->plant, sizeof(info->plant)); |
95 | EBCASC(info->model_capacity, sizeof(info->model_capacity)); |
96 | EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); |
97 | EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); |
98 | if (has_var_cap) |
99 | EBCASC(info->model_var_cap, sizeof(info->model_var_cap)); |
100 | seq_printf(m, fmt: "Manufacturer: %-16.16s\n" , info->manufacturer); |
101 | seq_printf(m, fmt: "Type: %-4.4s\n" , info->type); |
102 | if (info->lic) |
103 | seq_printf(m, fmt: "LIC Identifier: %016lx\n" , info->lic); |
104 | /* |
105 | * Sigh: the model field has been renamed with System z9 |
106 | * to model_capacity and a new model field has been added |
107 | * after the plant field. To avoid confusing older programs |
108 | * the "Model:" prints "model_capacity model" or just |
109 | * "model_capacity" if the model string is empty . |
110 | */ |
111 | seq_printf(m, fmt: "Model: %-16.16s" , info->model_capacity); |
112 | if (info->model[0] != '\0') |
113 | seq_printf(m, fmt: " %-16.16s" , info->model); |
114 | seq_putc(m, c: '\n'); |
115 | seq_printf(m, fmt: "Sequence Code: %-16.16s\n" , info->sequence); |
116 | seq_printf(m, fmt: "Plant: %-4.4s\n" , info->plant); |
117 | seq_printf(m, fmt: "Model Capacity: %-16.16s %08u\n" , |
118 | info->model_capacity, info->model_cap_rating); |
119 | if (info->model_perm_cap_rating) |
120 | seq_printf(m, fmt: "Model Perm. Capacity: %-16.16s %08u\n" , |
121 | info->model_perm_cap, |
122 | info->model_perm_cap_rating); |
123 | if (info->model_temp_cap_rating) |
124 | seq_printf(m, fmt: "Model Temp. Capacity: %-16.16s %08u\n" , |
125 | info->model_temp_cap, |
126 | info->model_temp_cap_rating); |
127 | if (has_var_cap && info->model_var_cap_rating) |
128 | seq_printf(m, fmt: "Model Var. Capacity: %-16.16s %08u\n" , |
129 | info->model_var_cap, |
130 | info->model_var_cap_rating); |
131 | if (info->ncr) |
132 | seq_printf(m, fmt: "Nominal Cap. Rating: %08u\n" , info->ncr); |
133 | if (info->npr) |
134 | seq_printf(m, fmt: "Nominal Perm. Rating: %08u\n" , info->npr); |
135 | if (info->ntr) |
136 | seq_printf(m, fmt: "Nominal Temp. Rating: %08u\n" , info->ntr); |
137 | if (has_var_cap && info->nvr) |
138 | seq_printf(m, fmt: "Nominal Var. Rating: %08u\n" , info->nvr); |
139 | if (info->cai) { |
140 | seq_printf(m, fmt: "Capacity Adj. Ind.: %d\n" , info->cai); |
141 | seq_printf(m, fmt: "Capacity Ch. Reason: %d\n" , info->ccr); |
142 | seq_printf(m, fmt: "Capacity Transient: %d\n" , info->t); |
143 | } |
144 | if (info->p) { |
145 | for (i = 1; i <= ARRAY_SIZE(info->typepct); i++) { |
146 | seq_printf(m, fmt: "Type %d Percentage: %d\n" , |
147 | i, info->typepct[i - 1]); |
148 | } |
149 | } |
150 | } |
151 | |
152 | static void stsi_15_1_x(struct seq_file *m, struct sysinfo_15_1_x *info) |
153 | { |
154 | int i; |
155 | |
156 | seq_putc(m, c: '\n'); |
157 | if (!MACHINE_HAS_TOPOLOGY) |
158 | return; |
159 | if (stsi(info, 15, 1, topology_max_mnest)) |
160 | return; |
161 | seq_printf(m, fmt: "CPU Topology HW: " ); |
162 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
163 | seq_printf(m, fmt: " %d" , info->mag[i]); |
164 | seq_putc(m, c: '\n'); |
165 | #ifdef CONFIG_SCHED_TOPOLOGY |
166 | store_topology(info); |
167 | seq_printf(m, "CPU Topology SW: " ); |
168 | for (i = 0; i < TOPOLOGY_NR_MAG; i++) |
169 | seq_printf(m, " %d" , info->mag[i]); |
170 | seq_putc(m, '\n'); |
171 | #endif |
172 | } |
173 | |
174 | static void stsi_1_2_2(struct seq_file *m, struct sysinfo_1_2_2 *info) |
175 | { |
176 | struct sysinfo_1_2_2_extension *ext; |
177 | int i; |
178 | |
179 | if (stsi(info, 1, 2, 2)) |
180 | return; |
181 | ext = (struct sysinfo_1_2_2_extension *) |
182 | ((unsigned long) info + info->acc_offset); |
183 | seq_printf(m, fmt: "CPUs Total: %d\n" , info->cpus_total); |
184 | seq_printf(m, fmt: "CPUs Configured: %d\n" , info->cpus_configured); |
185 | seq_printf(m, fmt: "CPUs Standby: %d\n" , info->cpus_standby); |
186 | seq_printf(m, fmt: "CPUs Reserved: %d\n" , info->cpus_reserved); |
187 | if (info->mt_installed) { |
188 | seq_printf(m, fmt: "CPUs G-MTID: %d\n" , info->mt_gtid); |
189 | seq_printf(m, fmt: "CPUs S-MTID: %d\n" , info->mt_stid); |
190 | } |
191 | /* |
192 | * Sigh 2. According to the specification the alternate |
193 | * capability field is a 32 bit floating point number |
194 | * if the higher order 8 bits are not zero. Printing |
195 | * a floating point number in the kernel is a no-no, |
196 | * always print the number as 32 bit unsigned integer. |
197 | * The user-space needs to know about the strange |
198 | * encoding of the alternate cpu capability. |
199 | */ |
200 | seq_printf(m, fmt: "Capability: %u" , info->capability); |
201 | if (info->format == 1) |
202 | seq_printf(m, fmt: " %u" , ext->alt_capability); |
203 | seq_putc(m, c: '\n'); |
204 | if (info->nominal_cap) |
205 | seq_printf(m, fmt: "Nominal Capability: %d\n" , info->nominal_cap); |
206 | if (info->secondary_cap) |
207 | seq_printf(m, fmt: "Secondary Capability: %d\n" , info->secondary_cap); |
208 | for (i = 2; i <= info->cpus_total; i++) { |
209 | seq_printf(m, fmt: "Adjustment %02d-way: %u" , |
210 | i, info->adjustment[i-2]); |
211 | if (info->format == 1) |
212 | seq_printf(m, fmt: " %u" , ext->alt_adjustment[i-2]); |
213 | seq_putc(m, c: '\n'); |
214 | } |
215 | } |
216 | |
217 | static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info) |
218 | { |
219 | if (stsi(info, 2, 2, 2)) |
220 | return; |
221 | EBCASC(info->name, sizeof(info->name)); |
222 | seq_putc(m, c: '\n'); |
223 | seq_printf(m, fmt: "LPAR Number: %d\n" , info->lpar_number); |
224 | seq_printf(m, fmt: "LPAR Characteristics: " ); |
225 | if (info->characteristics & LPAR_CHAR_DEDICATED) |
226 | seq_printf(m, fmt: "Dedicated " ); |
227 | if (info->characteristics & LPAR_CHAR_SHARED) |
228 | seq_printf(m, fmt: "Shared " ); |
229 | if (info->characteristics & LPAR_CHAR_LIMITED) |
230 | seq_printf(m, fmt: "Limited " ); |
231 | seq_putc(m, c: '\n'); |
232 | seq_printf(m, fmt: "LPAR Name: %-8.8s\n" , info->name); |
233 | seq_printf(m, fmt: "LPAR Adjustment: %d\n" , info->caf); |
234 | seq_printf(m, fmt: "LPAR CPUs Total: %d\n" , info->cpus_total); |
235 | seq_printf(m, fmt: "LPAR CPUs Configured: %d\n" , info->cpus_configured); |
236 | seq_printf(m, fmt: "LPAR CPUs Standby: %d\n" , info->cpus_standby); |
237 | seq_printf(m, fmt: "LPAR CPUs Reserved: %d\n" , info->cpus_reserved); |
238 | seq_printf(m, fmt: "LPAR CPUs Dedicated: %d\n" , info->cpus_dedicated); |
239 | seq_printf(m, fmt: "LPAR CPUs Shared: %d\n" , info->cpus_shared); |
240 | if (info->mt_installed) { |
241 | seq_printf(m, fmt: "LPAR CPUs G-MTID: %d\n" , info->mt_gtid); |
242 | seq_printf(m, fmt: "LPAR CPUs S-MTID: %d\n" , info->mt_stid); |
243 | seq_printf(m, fmt: "LPAR CPUs PS-MTID: %d\n" , info->mt_psmtid); |
244 | } |
245 | if (convert_ext_name(encoding: info->vsne, name: info->ext_name, len: sizeof(info->ext_name))) { |
246 | seq_printf(m, fmt: "LPAR Extended Name: %-.256s\n" , info->ext_name); |
247 | seq_printf(m, fmt: "LPAR UUID: %pUb\n" , &info->uuid); |
248 | } |
249 | } |
250 | |
251 | static void print_ext_name(struct seq_file *m, int lvl, |
252 | struct sysinfo_3_2_2 *info) |
253 | { |
254 | size_t len = sizeof(info->ext_names[lvl]); |
255 | |
256 | if (!convert_ext_name(encoding: info->vm[lvl].evmne, name: info->ext_names[lvl], len)) |
257 | return; |
258 | seq_printf(m, fmt: "VM%02d Extended Name: %-.256s\n" , lvl, |
259 | info->ext_names[lvl]); |
260 | } |
261 | |
262 | static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info) |
263 | { |
264 | if (uuid_is_null(uuid: &info->vm[i].uuid)) |
265 | return; |
266 | seq_printf(m, fmt: "VM%02d UUID: %pUb\n" , i, &info->vm[i].uuid); |
267 | } |
268 | |
269 | static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info) |
270 | { |
271 | int i; |
272 | |
273 | if (stsi(info, 3, 2, 2)) |
274 | return; |
275 | for (i = 0; i < info->count; i++) { |
276 | EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); |
277 | EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); |
278 | seq_putc(m, c: '\n'); |
279 | seq_printf(m, fmt: "VM%02d Name: %-8.8s\n" , i, info->vm[i].name); |
280 | seq_printf(m, fmt: "VM%02d Control Program: %-16.16s\n" , i, info->vm[i].cpi); |
281 | seq_printf(m, fmt: "VM%02d Adjustment: %d\n" , i, info->vm[i].caf); |
282 | seq_printf(m, fmt: "VM%02d CPUs Total: %d\n" , i, info->vm[i].cpus_total); |
283 | seq_printf(m, fmt: "VM%02d CPUs Configured: %d\n" , i, info->vm[i].cpus_configured); |
284 | seq_printf(m, fmt: "VM%02d CPUs Standby: %d\n" , i, info->vm[i].cpus_standby); |
285 | seq_printf(m, fmt: "VM%02d CPUs Reserved: %d\n" , i, info->vm[i].cpus_reserved); |
286 | print_ext_name(m, lvl: i, info); |
287 | print_uuid(m, i, info); |
288 | } |
289 | } |
290 | |
291 | static int sysinfo_show(struct seq_file *m, void *v) |
292 | { |
293 | void *info = (void *)get_zeroed_page(GFP_KERNEL); |
294 | int level; |
295 | |
296 | if (!info) |
297 | return 0; |
298 | level = stsi(NULL, 0, 0, 0); |
299 | if (level >= 1) |
300 | stsi_1_1_1(m, info); |
301 | if (level >= 1) |
302 | stsi_15_1_x(m, info); |
303 | if (level >= 1) |
304 | stsi_1_2_2(m, info); |
305 | if (level >= 2) |
306 | stsi_2_2_2(m, info); |
307 | if (level >= 3) |
308 | stsi_3_2_2(m, info); |
309 | free_page((unsigned long)info); |
310 | return 0; |
311 | } |
312 | |
313 | static int __init sysinfo_create_proc(void) |
314 | { |
315 | proc_create_single("sysinfo" , 0444, NULL, sysinfo_show); |
316 | return 0; |
317 | } |
318 | device_initcall(sysinfo_create_proc); |
319 | |
320 | #endif /* CONFIG_PROC_FS */ |
321 | |
322 | /* |
323 | * Service levels interface. |
324 | */ |
325 | |
326 | static DECLARE_RWSEM(service_level_sem); |
327 | static LIST_HEAD(service_level_list); |
328 | |
329 | int register_service_level(struct service_level *slr) |
330 | { |
331 | struct service_level *ptr; |
332 | |
333 | down_write(sem: &service_level_sem); |
334 | list_for_each_entry(ptr, &service_level_list, list) |
335 | if (ptr == slr) { |
336 | up_write(sem: &service_level_sem); |
337 | return -EEXIST; |
338 | } |
339 | list_add_tail(new: &slr->list, head: &service_level_list); |
340 | up_write(sem: &service_level_sem); |
341 | return 0; |
342 | } |
343 | EXPORT_SYMBOL(register_service_level); |
344 | |
345 | int unregister_service_level(struct service_level *slr) |
346 | { |
347 | struct service_level *ptr, *next; |
348 | int rc = -ENOENT; |
349 | |
350 | down_write(sem: &service_level_sem); |
351 | list_for_each_entry_safe(ptr, next, &service_level_list, list) { |
352 | if (ptr != slr) |
353 | continue; |
354 | list_del(entry: &ptr->list); |
355 | rc = 0; |
356 | break; |
357 | } |
358 | up_write(sem: &service_level_sem); |
359 | return rc; |
360 | } |
361 | EXPORT_SYMBOL(unregister_service_level); |
362 | |
363 | static void *service_level_start(struct seq_file *m, loff_t *pos) |
364 | { |
365 | down_read(sem: &service_level_sem); |
366 | return seq_list_start(head: &service_level_list, pos: *pos); |
367 | } |
368 | |
369 | static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) |
370 | { |
371 | return seq_list_next(v: p, head: &service_level_list, ppos: pos); |
372 | } |
373 | |
374 | static void service_level_stop(struct seq_file *m, void *p) |
375 | { |
376 | up_read(sem: &service_level_sem); |
377 | } |
378 | |
379 | static int service_level_show(struct seq_file *m, void *p) |
380 | { |
381 | struct service_level *slr; |
382 | |
383 | slr = list_entry(p, struct service_level, list); |
384 | slr->seq_print(m, slr); |
385 | return 0; |
386 | } |
387 | |
388 | static const struct seq_operations service_level_seq_ops = { |
389 | .start = service_level_start, |
390 | .next = service_level_next, |
391 | .stop = service_level_stop, |
392 | .show = service_level_show |
393 | }; |
394 | |
395 | static void service_level_vm_print(struct seq_file *m, |
396 | struct service_level *slr) |
397 | { |
398 | char *query_buffer, *str; |
399 | |
400 | query_buffer = kmalloc(size: 1024, GFP_KERNEL); |
401 | if (!query_buffer) |
402 | return; |
403 | cpcmd("QUERY CPLEVEL" , query_buffer, 1024, NULL); |
404 | str = strchr(query_buffer, '\n'); |
405 | if (str) |
406 | *str = 0; |
407 | seq_printf(m, fmt: "VM: %s\n" , query_buffer); |
408 | kfree(objp: query_buffer); |
409 | } |
410 | |
411 | static struct service_level service_level_vm = { |
412 | .seq_print = service_level_vm_print |
413 | }; |
414 | |
415 | static __init int create_proc_service_level(void) |
416 | { |
417 | proc_create_seq("service_levels" , 0, NULL, &service_level_seq_ops); |
418 | if (MACHINE_IS_VM) |
419 | register_service_level(&service_level_vm); |
420 | return 0; |
421 | } |
422 | subsys_initcall(create_proc_service_level); |
423 | |
424 | /* |
425 | * CPU capability might have changed. Therefore recalculate loops_per_jiffy. |
426 | */ |
427 | void s390_adjust_jiffies(void) |
428 | { |
429 | DECLARE_KERNEL_FPU_ONSTACK16(fpu); |
430 | struct sysinfo_1_2_2 *info; |
431 | unsigned long capability; |
432 | |
433 | info = (void *) get_zeroed_page(GFP_KERNEL); |
434 | if (!info) |
435 | return; |
436 | |
437 | if (stsi(info, 1, 2, 2) == 0) { |
438 | /* |
439 | * Major sigh. The cpu capability encoding is "special". |
440 | * If the first 9 bits of info->capability are 0 then it |
441 | * is a 32 bit unsigned integer in the range 0 .. 2^23. |
442 | * If the first 9 bits are != 0 then it is a 32 bit float. |
443 | * In addition a lower value indicates a proportionally |
444 | * higher cpu capacity. Bogomips are the other way round. |
445 | * To get to a halfway suitable number we divide 1e7 |
446 | * by the cpu capability number. Yes, that means a floating |
447 | * point division .. |
448 | */ |
449 | kernel_fpu_begin(&fpu, KERNEL_FPR); |
450 | fpu_sfpc(0); |
451 | if (info->capability & 0xff800000) |
452 | fpu_ldgr(2, info->capability); |
453 | else |
454 | fpu_cefbr(2, info->capability); |
455 | fpu_cefbr(0, 10000000); |
456 | fpu_debr(0, 2); |
457 | capability = fpu_cgebr(0, 5); |
458 | kernel_fpu_end(&fpu, KERNEL_FPR); |
459 | } else |
460 | /* |
461 | * Really old machine without stsi block for basic |
462 | * cpu information. Report 42.0 bogomips. |
463 | */ |
464 | capability = 42; |
465 | loops_per_jiffy = capability * (500000/HZ); |
466 | free_page((unsigned long) info); |
467 | } |
468 | |
469 | /* |
470 | * calibrate the delay loop |
471 | */ |
472 | void calibrate_delay(void) |
473 | { |
474 | s390_adjust_jiffies(); |
475 | /* Print the good old Bogomips line .. */ |
476 | printk(KERN_DEBUG "Calibrating delay loop (skipped)... " |
477 | "%lu.%02lu BogoMIPS preset\n" , loops_per_jiffy/(500000/HZ), |
478 | (loops_per_jiffy/(5000/HZ)) % 100); |
479 | } |
480 | |
481 | #ifdef CONFIG_DEBUG_FS |
482 | |
483 | #define STSI_FILE(fc, s1, s2) \ |
484 | static int stsi_open_##fc##_##s1##_##s2(struct inode *inode, struct file *file)\ |
485 | { \ |
486 | file->private_data = (void *) get_zeroed_page(GFP_KERNEL); \ |
487 | if (!file->private_data) \ |
488 | return -ENOMEM; \ |
489 | if (stsi(file->private_data, fc, s1, s2)) { \ |
490 | free_page((unsigned long)file->private_data); \ |
491 | file->private_data = NULL; \ |
492 | return -EACCES; \ |
493 | } \ |
494 | return nonseekable_open(inode, file); \ |
495 | } \ |
496 | \ |
497 | static const struct file_operations stsi_##fc##_##s1##_##s2##_fs_ops = { \ |
498 | .open = stsi_open_##fc##_##s1##_##s2, \ |
499 | .release = stsi_release, \ |
500 | .read = stsi_read, \ |
501 | .llseek = no_llseek, \ |
502 | }; |
503 | |
504 | static int stsi_release(struct inode *inode, struct file *file) |
505 | { |
506 | free_page((unsigned long)file->private_data); |
507 | return 0; |
508 | } |
509 | |
510 | static ssize_t stsi_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) |
511 | { |
512 | return simple_read_from_buffer(to: buf, count: size, ppos, from: file->private_data, PAGE_SIZE); |
513 | } |
514 | |
515 | STSI_FILE( 1, 1, 1); |
516 | STSI_FILE( 1, 2, 1); |
517 | STSI_FILE( 1, 2, 2); |
518 | STSI_FILE( 2, 2, 1); |
519 | STSI_FILE( 2, 2, 2); |
520 | STSI_FILE( 3, 2, 2); |
521 | STSI_FILE(15, 1, 2); |
522 | STSI_FILE(15, 1, 3); |
523 | STSI_FILE(15, 1, 4); |
524 | STSI_FILE(15, 1, 5); |
525 | STSI_FILE(15, 1, 6); |
526 | |
527 | struct stsi_file { |
528 | const struct file_operations *fops; |
529 | char *name; |
530 | }; |
531 | |
532 | static struct stsi_file stsi_file[] __initdata = { |
533 | {.fops = &stsi_1_1_1_fs_ops, .name = "1_1_1" }, |
534 | {.fops = &stsi_1_2_1_fs_ops, .name = "1_2_1" }, |
535 | {.fops = &stsi_1_2_2_fs_ops, .name = "1_2_2" }, |
536 | {.fops = &stsi_2_2_1_fs_ops, .name = "2_2_1" }, |
537 | {.fops = &stsi_2_2_2_fs_ops, .name = "2_2_2" }, |
538 | {.fops = &stsi_3_2_2_fs_ops, .name = "3_2_2" }, |
539 | {.fops = &stsi_15_1_2_fs_ops, .name = "15_1_2" }, |
540 | {.fops = &stsi_15_1_3_fs_ops, .name = "15_1_3" }, |
541 | {.fops = &stsi_15_1_4_fs_ops, .name = "15_1_4" }, |
542 | {.fops = &stsi_15_1_5_fs_ops, .name = "15_1_5" }, |
543 | {.fops = &stsi_15_1_6_fs_ops, .name = "15_1_6" }, |
544 | }; |
545 | |
546 | static u8 stsi_0_0_0; |
547 | |
548 | static __init int stsi_init_debugfs(void) |
549 | { |
550 | struct dentry *stsi_root; |
551 | struct stsi_file *sf; |
552 | int lvl, i; |
553 | |
554 | stsi_root = debugfs_create_dir(name: "stsi" , parent: arch_debugfs_dir); |
555 | lvl = stsi(NULL, 0, 0, 0); |
556 | if (lvl > 0) |
557 | stsi_0_0_0 = lvl; |
558 | debugfs_create_u8(name: "0_0_0" , mode: 0400, parent: stsi_root, value: &stsi_0_0_0); |
559 | for (i = 0; i < ARRAY_SIZE(stsi_file); i++) { |
560 | sf = &stsi_file[i]; |
561 | debugfs_create_file(name: sf->name, mode: 0400, parent: stsi_root, NULL, fops: sf->fops); |
562 | } |
563 | if (IS_ENABLED(CONFIG_SCHED_TOPOLOGY) && MACHINE_HAS_TOPOLOGY) { |
564 | char link_to[10]; |
565 | |
566 | sprintf(buf: link_to, fmt: "15_1_%d" , topology_mnest_limit()); |
567 | debugfs_create_symlink(name: "topology" , parent: stsi_root, dest: link_to); |
568 | } |
569 | return 0; |
570 | } |
571 | device_initcall(stsi_init_debugfs); |
572 | |
573 | #endif /* CONFIG_DEBUG_FS */ |
574 | |