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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (C) 1992, 1998-2004 Linus Torvalds, Ingo Molnar |
4 | * | |
5 | * This file contains the /proc/irq/ handling code. | |
6 | */ | |
7 | ||
8 | #include <linux/irq.h> | |
5a0e3ad6 | 9 | #include <linux/gfp.h> |
1da177e4 | 10 | #include <linux/proc_fs.h> |
f18e439d | 11 | #include <linux/seq_file.h> |
1da177e4 | 12 | #include <linux/interrupt.h> |
c78b9b65 | 13 | #include <linux/kernel_stat.h> |
95c2b175 | 14 | #include <linux/mutex.h> |
1da177e4 | 15 | |
97a41e26 AB |
16 | #include "internals.h" |
17 | ||
c291ee62 TG |
18 | /* |
19 | * Access rules: | |
20 | * | |
21 | * procfs protects read/write of /proc/irq/N/ files against a | |
22 | * concurrent free of the interrupt descriptor. remove_proc_entry() | |
23 | * immediately prevents new read/writes to happen and waits for | |
24 | * already running read/write functions to complete. | |
25 | * | |
26 | * We remove the proc entries first and then delete the interrupt | |
27 | * descriptor from the radix tree and free it. So it is guaranteed | |
28 | * that irq_to_desc(N) is valid as long as the read/writes are | |
29 | * permitted by procfs. | |
30 | * | |
31 | * The read from /proc/interrupts is a different problem because there | |
32 | * is no protection. So the lookup and the access to irqdesc | |
33 | * information must be protected by sparse_irq_lock. | |
34 | */ | |
4a733ee1 | 35 | static struct proc_dir_entry *root_irq_dir; |
1da177e4 LT |
36 | |
37 | #ifdef CONFIG_SMP | |
38 | ||
0d3f5425 TG |
39 | enum { |
40 | AFFINITY, | |
41 | AFFINITY_LIST, | |
42 | EFFECTIVE, | |
43 | EFFECTIVE_LIST, | |
44 | }; | |
45 | ||
047dc633 | 46 | static int show_irq_affinity(int type, struct seq_file *m) |
1da177e4 | 47 | { |
08678b08 | 48 | struct irq_desc *desc = irq_to_desc((long)m->private); |
0d3f5425 | 49 | const struct cpumask *mask; |
42ee2b74 | 50 | |
0d3f5425 TG |
51 | switch (type) { |
52 | case AFFINITY: | |
53 | case AFFINITY_LIST: | |
54 | mask = desc->irq_common_data.affinity; | |
42ee2b74 | 55 | #ifdef CONFIG_GENERIC_PENDING_IRQ |
0d3f5425 TG |
56 | if (irqd_is_setaffinity_pending(&desc->irq_data)) |
57 | mask = desc->pending_mask; | |
42ee2b74 | 58 | #endif |
0d3f5425 TG |
59 | break; |
60 | case EFFECTIVE: | |
61 | case EFFECTIVE_LIST: | |
62 | #ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK | |
6bc6d4ab | 63 | mask = irq_data_get_effective_affinity_mask(&desc->irq_data); |
0d3f5425 | 64 | break; |
0d3f5425 | 65 | #endif |
b33394ba TG |
66 | default: |
67 | return -EINVAL; | |
ce8bdd69 | 68 | } |
0d3f5425 TG |
69 | |
70 | switch (type) { | |
71 | case AFFINITY_LIST: | |
72 | case EFFECTIVE_LIST: | |
c1d7f03f | 73 | seq_printf(m, "%*pbl\n", cpumask_pr_args(mask)); |
0d3f5425 TG |
74 | break; |
75 | case AFFINITY: | |
76 | case EFFECTIVE: | |
c1d7f03f | 77 | seq_printf(m, "%*pb\n", cpumask_pr_args(mask)); |
0d3f5425 TG |
78 | break; |
79 | } | |
f18e439d | 80 | return 0; |
1da177e4 LT |
81 | } |
82 | ||
e7a297b0 PWJ |
83 | static int irq_affinity_hint_proc_show(struct seq_file *m, void *v) |
84 | { | |
85 | struct irq_desc *desc = irq_to_desc((long)m->private); | |
86 | unsigned long flags; | |
87 | cpumask_var_t mask; | |
88 | ||
4308ad80 | 89 | if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) |
e7a297b0 PWJ |
90 | return -ENOMEM; |
91 | ||
92 | raw_spin_lock_irqsave(&desc->lock, flags); | |
93 | if (desc->affinity_hint) | |
94 | cpumask_copy(mask, desc->affinity_hint); | |
e7a297b0 PWJ |
95 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
96 | ||
c1d7f03f | 97 | seq_printf(m, "%*pb\n", cpumask_pr_args(mask)); |
e7a297b0 PWJ |
98 | free_cpumask_var(mask); |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
1da177e4 | 103 | int no_irq_affinity; |
4b060420 MT |
104 | static int irq_affinity_proc_show(struct seq_file *m, void *v) |
105 | { | |
0d3f5425 | 106 | return show_irq_affinity(AFFINITY, m); |
4b060420 MT |
107 | } |
108 | ||
109 | static int irq_affinity_list_proc_show(struct seq_file *m, void *v) | |
110 | { | |
0d3f5425 | 111 | return show_irq_affinity(AFFINITY_LIST, m); |
4b060420 MT |
112 | } |
113 | ||
cba6437a TG |
114 | #ifndef CONFIG_AUTO_IRQ_AFFINITY |
115 | static inline int irq_select_affinity_usr(unsigned int irq) | |
116 | { | |
117 | /* | |
118 | * If the interrupt is started up already then this fails. The | |
119 | * interrupt is assigned to an online CPU already. There is no | |
120 | * point to move it around randomly. Tell user space that the | |
121 | * selected mask is bogus. | |
122 | * | |
123 | * If not then any change to the affinity is pointless because the | |
124 | * startup code invokes irq_setup_affinity() which will select | |
125 | * a online CPU anyway. | |
126 | */ | |
127 | return -EINVAL; | |
128 | } | |
129 | #else | |
130 | /* ALPHA magic affinity auto selector. Keep it for historical reasons. */ | |
131 | static inline int irq_select_affinity_usr(unsigned int irq) | |
132 | { | |
133 | return irq_select_affinity(irq); | |
134 | } | |
135 | #endif | |
4b060420 MT |
136 | |
137 | static ssize_t write_irq_affinity(int type, struct file *file, | |
f18e439d | 138 | const char __user *buffer, size_t count, loff_t *pos) |
1da177e4 | 139 | { |
d9dda78b | 140 | unsigned int irq = (int)(long)PDE_DATA(file_inode(file)); |
0de26520 | 141 | cpumask_var_t new_value; |
f18e439d | 142 | int err; |
1da177e4 | 143 | |
9c255583 | 144 | if (!irq_can_set_affinity_usr(irq) || no_irq_affinity) |
1da177e4 LT |
145 | return -EIO; |
146 | ||
0de26520 RR |
147 | if (!alloc_cpumask_var(&new_value, GFP_KERNEL)) |
148 | return -ENOMEM; | |
149 | ||
4b060420 MT |
150 | if (type) |
151 | err = cpumask_parselist_user(buffer, count, new_value); | |
152 | else | |
153 | err = cpumask_parse_user(buffer, count, new_value); | |
1da177e4 | 154 | if (err) |
0de26520 | 155 | goto free_cpumask; |
1da177e4 LT |
156 | |
157 | /* | |
158 | * Do not allow disabling IRQs completely - it's a too easy | |
159 | * way to make the system unusable accidentally :-) At least | |
160 | * one online CPU still has to be targeted. | |
161 | */ | |
0de26520 | 162 | if (!cpumask_intersects(new_value, cpu_online_mask)) { |
cba4235e TG |
163 | /* |
164 | * Special case for empty set - allow the architecture code | |
165 | * to set default SMP affinity. | |
166 | */ | |
167 | err = irq_select_affinity_usr(irq) ? -EINVAL : count; | |
0de26520 | 168 | } else { |
6714796e WY |
169 | err = irq_set_affinity(irq, new_value); |
170 | if (!err) | |
171 | err = count; | |
0de26520 RR |
172 | } |
173 | ||
174 | free_cpumask: | |
175 | free_cpumask_var(new_value); | |
176 | return err; | |
1da177e4 LT |
177 | } |
178 | ||
4b060420 MT |
179 | static ssize_t irq_affinity_proc_write(struct file *file, |
180 | const char __user *buffer, size_t count, loff_t *pos) | |
181 | { | |
182 | return write_irq_affinity(0, file, buffer, count, pos); | |
183 | } | |
184 | ||
185 | static ssize_t irq_affinity_list_proc_write(struct file *file, | |
186 | const char __user *buffer, size_t count, loff_t *pos) | |
187 | { | |
188 | return write_irq_affinity(1, file, buffer, count, pos); | |
189 | } | |
190 | ||
f18e439d | 191 | static int irq_affinity_proc_open(struct inode *inode, struct file *file) |
18404756 | 192 | { |
d9dda78b | 193 | return single_open(file, irq_affinity_proc_show, PDE_DATA(inode)); |
18404756 MK |
194 | } |
195 | ||
4b060420 MT |
196 | static int irq_affinity_list_proc_open(struct inode *inode, struct file *file) |
197 | { | |
d9dda78b | 198 | return single_open(file, irq_affinity_list_proc_show, PDE_DATA(inode)); |
4b060420 MT |
199 | } |
200 | ||
97a32539 AD |
201 | static const struct proc_ops irq_affinity_proc_ops = { |
202 | .proc_open = irq_affinity_proc_open, | |
203 | .proc_read = seq_read, | |
204 | .proc_lseek = seq_lseek, | |
205 | .proc_release = single_release, | |
206 | .proc_write = irq_affinity_proc_write, | |
f18e439d AD |
207 | }; |
208 | ||
97a32539 AD |
209 | static const struct proc_ops irq_affinity_list_proc_ops = { |
210 | .proc_open = irq_affinity_list_proc_open, | |
211 | .proc_read = seq_read, | |
212 | .proc_lseek = seq_lseek, | |
213 | .proc_release = single_release, | |
214 | .proc_write = irq_affinity_list_proc_write, | |
4b060420 MT |
215 | }; |
216 | ||
0d3f5425 TG |
217 | #ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK |
218 | static int irq_effective_aff_proc_show(struct seq_file *m, void *v) | |
219 | { | |
220 | return show_irq_affinity(EFFECTIVE, m); | |
221 | } | |
222 | ||
223 | static int irq_effective_aff_list_proc_show(struct seq_file *m, void *v) | |
224 | { | |
225 | return show_irq_affinity(EFFECTIVE_LIST, m); | |
226 | } | |
0d3f5425 TG |
227 | #endif |
228 | ||
f18e439d AD |
229 | static int default_affinity_show(struct seq_file *m, void *v) |
230 | { | |
c1d7f03f | 231 | seq_printf(m, "%*pb\n", cpumask_pr_args(irq_default_affinity)); |
f18e439d AD |
232 | return 0; |
233 | } | |
234 | ||
235 | static ssize_t default_affinity_write(struct file *file, | |
236 | const char __user *buffer, size_t count, loff_t *ppos) | |
18404756 | 237 | { |
d036e67b | 238 | cpumask_var_t new_value; |
f18e439d | 239 | int err; |
18404756 | 240 | |
d036e67b RR |
241 | if (!alloc_cpumask_var(&new_value, GFP_KERNEL)) |
242 | return -ENOMEM; | |
243 | ||
244 | err = cpumask_parse_user(buffer, count, new_value); | |
18404756 | 245 | if (err) |
d036e67b | 246 | goto out; |
18404756 | 247 | |
18404756 MK |
248 | /* |
249 | * Do not allow disabling IRQs completely - it's a too easy | |
250 | * way to make the system unusable accidentally :-) At least | |
251 | * one online CPU still has to be targeted. | |
252 | */ | |
d036e67b RR |
253 | if (!cpumask_intersects(new_value, cpu_online_mask)) { |
254 | err = -EINVAL; | |
255 | goto out; | |
256 | } | |
18404756 | 257 | |
d036e67b RR |
258 | cpumask_copy(irq_default_affinity, new_value); |
259 | err = count; | |
18404756 | 260 | |
d036e67b RR |
261 | out: |
262 | free_cpumask_var(new_value); | |
263 | return err; | |
18404756 | 264 | } |
f18e439d AD |
265 | |
266 | static int default_affinity_open(struct inode *inode, struct file *file) | |
267 | { | |
d9dda78b | 268 | return single_open(file, default_affinity_show, PDE_DATA(inode)); |
f18e439d AD |
269 | } |
270 | ||
97a32539 AD |
271 | static const struct proc_ops default_affinity_proc_ops = { |
272 | .proc_open = default_affinity_open, | |
273 | .proc_read = seq_read, | |
274 | .proc_lseek = seq_lseek, | |
275 | .proc_release = single_release, | |
276 | .proc_write = default_affinity_write, | |
f18e439d | 277 | }; |
92d6b71a DS |
278 | |
279 | static int irq_node_proc_show(struct seq_file *m, void *v) | |
280 | { | |
281 | struct irq_desc *desc = irq_to_desc((long) m->private); | |
282 | ||
6783011b | 283 | seq_printf(m, "%d\n", irq_desc_get_node(desc)); |
92d6b71a DS |
284 | return 0; |
285 | } | |
1da177e4 LT |
286 | #endif |
287 | ||
a1afb637 | 288 | static int irq_spurious_proc_show(struct seq_file *m, void *v) |
96d97cf0 | 289 | { |
a1afb637 AD |
290 | struct irq_desc *desc = irq_to_desc((long) m->private); |
291 | ||
292 | seq_printf(m, "count %u\n" "unhandled %u\n" "last_unhandled %u ms\n", | |
293 | desc->irq_count, desc->irqs_unhandled, | |
294 | jiffies_to_msecs(desc->last_unhandled)); | |
295 | return 0; | |
296 | } | |
297 | ||
1da177e4 LT |
298 | #define MAX_NAMELEN 128 |
299 | ||
300 | static int name_unique(unsigned int irq, struct irqaction *new_action) | |
301 | { | |
08678b08 | 302 | struct irq_desc *desc = irq_to_desc(irq); |
1da177e4 | 303 | struct irqaction *action; |
d2d9433a DA |
304 | unsigned long flags; |
305 | int ret = 1; | |
1da177e4 | 306 | |
239007b8 | 307 | raw_spin_lock_irqsave(&desc->lock, flags); |
f944b5a7 | 308 | for_each_action_of_desc(desc, action) { |
1da177e4 | 309 | if ((action != new_action) && action->name && |
d2d9433a DA |
310 | !strcmp(new_action->name, action->name)) { |
311 | ret = 0; | |
312 | break; | |
313 | } | |
314 | } | |
239007b8 | 315 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
d2d9433a | 316 | return ret; |
1da177e4 LT |
317 | } |
318 | ||
319 | void register_handler_proc(unsigned int irq, struct irqaction *action) | |
320 | { | |
321 | char name [MAX_NAMELEN]; | |
08678b08 | 322 | struct irq_desc *desc = irq_to_desc(irq); |
1da177e4 | 323 | |
08678b08 | 324 | if (!desc->dir || action->dir || !action->name || |
1da177e4 LT |
325 | !name_unique(irq, action)) |
326 | return; | |
327 | ||
1da177e4 LT |
328 | snprintf(name, MAX_NAMELEN, "%s", action->name); |
329 | ||
330 | /* create /proc/irq/1234/handler/ */ | |
08678b08 | 331 | action->dir = proc_mkdir(name, desc->dir); |
1da177e4 LT |
332 | } |
333 | ||
334 | #undef MAX_NAMELEN | |
335 | ||
336 | #define MAX_NAMELEN 10 | |
337 | ||
2c6927a3 | 338 | void register_irq_proc(unsigned int irq, struct irq_desc *desc) |
1da177e4 | 339 | { |
95c2b175 | 340 | static DEFINE_MUTEX(register_lock); |
c1a80386 | 341 | void __maybe_unused *irqp = (void *)(unsigned long) irq; |
1da177e4 LT |
342 | char name [MAX_NAMELEN]; |
343 | ||
95c2b175 | 344 | if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip)) |
1da177e4 LT |
345 | return; |
346 | ||
95c2b175 BH |
347 | /* |
348 | * irq directories are registered only when a handler is | |
349 | * added, not when the descriptor is created, so multiple | |
350 | * tasks might try to register at the same time. | |
351 | */ | |
352 | mutex_lock(®ister_lock); | |
353 | ||
354 | if (desc->dir) | |
355 | goto out_unlock; | |
356 | ||
1da177e4 LT |
357 | sprintf(name, "%d", irq); |
358 | ||
359 | /* create /proc/irq/1234 */ | |
08678b08 | 360 | desc->dir = proc_mkdir(name, root_irq_dir); |
c82a43d4 | 361 | if (!desc->dir) |
95c2b175 | 362 | goto out_unlock; |
1da177e4 LT |
363 | |
364 | #ifdef CONFIG_SMP | |
f18e439d | 365 | /* create /proc/irq/<irq>/smp_affinity */ |
bab5c790 | 366 | proc_create_data("smp_affinity", 0644, desc->dir, |
97a32539 | 367 | &irq_affinity_proc_ops, irqp); |
92d6b71a | 368 | |
e7a297b0 | 369 | /* create /proc/irq/<irq>/affinity_hint */ |
3f3942ac CH |
370 | proc_create_single_data("affinity_hint", 0444, desc->dir, |
371 | irq_affinity_hint_proc_show, irqp); | |
e7a297b0 | 372 | |
4b060420 | 373 | /* create /proc/irq/<irq>/smp_affinity_list */ |
bab5c790 | 374 | proc_create_data("smp_affinity_list", 0644, desc->dir, |
97a32539 | 375 | &irq_affinity_list_proc_ops, irqp); |
4b060420 | 376 | |
3f3942ac CH |
377 | proc_create_single_data("node", 0444, desc->dir, irq_node_proc_show, |
378 | irqp); | |
0d3f5425 | 379 | # ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK |
3f3942ac CH |
380 | proc_create_single_data("effective_affinity", 0444, desc->dir, |
381 | irq_effective_aff_proc_show, irqp); | |
382 | proc_create_single_data("effective_affinity_list", 0444, desc->dir, | |
383 | irq_effective_aff_list_proc_show, irqp); | |
0d3f5425 | 384 | # endif |
1da177e4 | 385 | #endif |
3f3942ac CH |
386 | proc_create_single_data("spurious", 0444, desc->dir, |
387 | irq_spurious_proc_show, (void *)(long)irq); | |
95c2b175 BH |
388 | |
389 | out_unlock: | |
390 | mutex_unlock(®ister_lock); | |
1da177e4 LT |
391 | } |
392 | ||
13bfe99e TG |
393 | void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) |
394 | { | |
395 | char name [MAX_NAMELEN]; | |
396 | ||
397 | if (!root_irq_dir || !desc->dir) | |
398 | return; | |
399 | #ifdef CONFIG_SMP | |
400 | remove_proc_entry("smp_affinity", desc->dir); | |
401 | remove_proc_entry("affinity_hint", desc->dir); | |
def945ee | 402 | remove_proc_entry("smp_affinity_list", desc->dir); |
13bfe99e | 403 | remove_proc_entry("node", desc->dir); |
0d3f5425 TG |
404 | # ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK |
405 | remove_proc_entry("effective_affinity", desc->dir); | |
406 | remove_proc_entry("effective_affinity_list", desc->dir); | |
407 | # endif | |
13bfe99e TG |
408 | #endif |
409 | remove_proc_entry("spurious", desc->dir); | |
410 | ||
13bfe99e TG |
411 | sprintf(name, "%u", irq); |
412 | remove_proc_entry(name, root_irq_dir); | |
413 | } | |
414 | ||
1da177e4 LT |
415 | #undef MAX_NAMELEN |
416 | ||
417 | void unregister_handler_proc(unsigned int irq, struct irqaction *action) | |
418 | { | |
a8ca16ea | 419 | proc_remove(action->dir); |
1da177e4 LT |
420 | } |
421 | ||
3786fc71 | 422 | static void register_default_affinity_proc(void) |
18404756 MK |
423 | { |
424 | #ifdef CONFIG_SMP | |
bab5c790 | 425 | proc_create("irq/default_smp_affinity", 0644, NULL, |
97a32539 | 426 | &default_affinity_proc_ops); |
18404756 MK |
427 | #endif |
428 | } | |
429 | ||
1da177e4 LT |
430 | void init_irq_proc(void) |
431 | { | |
2c6927a3 YL |
432 | unsigned int irq; |
433 | struct irq_desc *desc; | |
1da177e4 LT |
434 | |
435 | /* create /proc/irq */ | |
436 | root_irq_dir = proc_mkdir("irq", NULL); | |
437 | if (!root_irq_dir) | |
438 | return; | |
439 | ||
18404756 MK |
440 | register_default_affinity_proc(); |
441 | ||
1da177e4 LT |
442 | /* |
443 | * Create entries for all existing IRQs. | |
444 | */ | |
fe3464ca | 445 | for_each_irq_desc(irq, desc) |
2c6927a3 | 446 | register_irq_proc(irq, desc); |
1da177e4 LT |
447 | } |
448 | ||
c78b9b65 TG |
449 | #ifdef CONFIG_GENERIC_IRQ_SHOW |
450 | ||
451 | int __weak arch_show_interrupts(struct seq_file *p, int prec) | |
452 | { | |
453 | return 0; | |
454 | } | |
455 | ||
a6e120ed TG |
456 | #ifndef ACTUAL_NR_IRQS |
457 | # define ACTUAL_NR_IRQS nr_irqs | |
458 | #endif | |
459 | ||
c78b9b65 TG |
460 | int show_interrupts(struct seq_file *p, void *v) |
461 | { | |
462 | static int prec; | |
463 | ||
464 | unsigned long flags, any_count = 0; | |
465 | int i = *(loff_t *) v, j; | |
466 | struct irqaction *action; | |
467 | struct irq_desc *desc; | |
468 | ||
a6e120ed | 469 | if (i > ACTUAL_NR_IRQS) |
c78b9b65 TG |
470 | return 0; |
471 | ||
a6e120ed | 472 | if (i == ACTUAL_NR_IRQS) |
c78b9b65 TG |
473 | return arch_show_interrupts(p, prec); |
474 | ||
475 | /* print header and calculate the width of the first column */ | |
476 | if (i == 0) { | |
477 | for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec) | |
478 | j *= 10; | |
479 | ||
480 | seq_printf(p, "%*s", prec + 8, ""); | |
481 | for_each_online_cpu(j) | |
482 | seq_printf(p, "CPU%-8d", j); | |
483 | seq_putc(p, '\n'); | |
484 | } | |
485 | ||
74bdf781 | 486 | rcu_read_lock(); |
c78b9b65 | 487 | desc = irq_to_desc(i); |
83cfac95 | 488 | if (!desc || irq_settings_is_hidden(desc)) |
c291ee62 | 489 | goto outsparse; |
c78b9b65 | 490 | |
74bdf781 ED |
491 | if (desc->kstat_irqs) |
492 | for_each_online_cpu(j) | |
493 | any_count |= *per_cpu_ptr(desc->kstat_irqs, j); | |
494 | ||
495 | if ((!desc->action || irq_desc_is_chained(desc)) && !any_count) | |
496 | goto outsparse; | |
c78b9b65 TG |
497 | |
498 | seq_printf(p, "%*d: ", prec, i); | |
499 | for_each_online_cpu(j) | |
74bdf781 ED |
500 | seq_printf(p, "%10u ", desc->kstat_irqs ? |
501 | *per_cpu_ptr(desc->kstat_irqs, j) : 0); | |
ab7798ff | 502 | |
74bdf781 | 503 | raw_spin_lock_irqsave(&desc->lock, flags); |
ab7798ff TG |
504 | if (desc->irq_data.chip) { |
505 | if (desc->irq_data.chip->irq_print_chip) | |
506 | desc->irq_data.chip->irq_print_chip(&desc->irq_data, p); | |
507 | else if (desc->irq_data.chip->name) | |
508 | seq_printf(p, " %8s", desc->irq_data.chip->name); | |
509 | else | |
510 | seq_printf(p, " %8s", "-"); | |
511 | } else { | |
512 | seq_printf(p, " %8s", "None"); | |
513 | } | |
c12d2f42 GL |
514 | if (desc->irq_data.domain) |
515 | seq_printf(p, " %*d", prec, (int) desc->irq_data.hwirq); | |
f435da41 HS |
516 | else |
517 | seq_printf(p, " %*s", prec, ""); | |
94b2c363 | 518 | #ifdef CONFIG_GENERIC_IRQ_SHOW_LEVEL |
ab7798ff TG |
519 | seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge"); |
520 | #endif | |
ee0401ec TG |
521 | if (desc->name) |
522 | seq_printf(p, "-%-8s", desc->name); | |
c78b9b65 | 523 | |
74bdf781 | 524 | action = desc->action; |
c78b9b65 TG |
525 | if (action) { |
526 | seq_printf(p, " %s", action->name); | |
527 | while ((action = action->next) != NULL) | |
528 | seq_printf(p, ", %s", action->name); | |
529 | } | |
530 | ||
531 | seq_putc(p, '\n'); | |
c78b9b65 | 532 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
c291ee62 | 533 | outsparse: |
74bdf781 | 534 | rcu_read_unlock(); |
c78b9b65 TG |
535 | return 0; |
536 | } | |
537 | #endif |