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0793a61d TG |
1 | /* |
2 | * Performance counters: | |
3 | * | |
4 | * Copyright(C) 2008, Thomas Gleixner <tglx@linutronix.de> | |
5 | * Copyright(C) 2008, Red Hat, Inc., Ingo Molnar | |
6 | * | |
7 | * Data type definitions, declarations, prototypes. | |
8 | * | |
9 | * Started by: Thomas Gleixner and Ingo Molnar | |
10 | * | |
11 | * For licencing details see kernel-base/COPYING | |
12 | */ | |
13 | #ifndef _LINUX_PERF_COUNTER_H | |
14 | #define _LINUX_PERF_COUNTER_H | |
15 | ||
f3dfd265 PM |
16 | #include <linux/types.h> |
17 | #include <linux/ioctl.h> | |
9aaa131a | 18 | #include <asm/byteorder.h> |
0793a61d TG |
19 | |
20 | /* | |
9f66a381 IM |
21 | * User-space ABI bits: |
22 | */ | |
23 | ||
24 | /* | |
b8e83514 | 25 | * hw_event.type |
0793a61d | 26 | */ |
b8e83514 PZ |
27 | enum perf_event_types { |
28 | PERF_TYPE_HARDWARE = 0, | |
29 | PERF_TYPE_SOFTWARE = 1, | |
30 | PERF_TYPE_TRACEPOINT = 2, | |
31 | ||
0793a61d | 32 | /* |
b8e83514 | 33 | * available TYPE space, raw is the max value. |
0793a61d | 34 | */ |
9f66a381 | 35 | |
b8e83514 PZ |
36 | PERF_TYPE_RAW = 128, |
37 | }; | |
6c594c21 | 38 | |
b8e83514 PZ |
39 | /* |
40 | * Generalized performance counter event types, used by the hw_event.event_id | |
41 | * parameter of the sys_perf_counter_open() syscall: | |
42 | */ | |
43 | enum hw_event_ids { | |
9f66a381 | 44 | /* |
b8e83514 | 45 | * Common hardware events, generalized by the kernel: |
9f66a381 | 46 | */ |
b8e83514 PZ |
47 | PERF_COUNT_CPU_CYCLES = 0, |
48 | PERF_COUNT_INSTRUCTIONS = 1, | |
49 | PERF_COUNT_CACHE_REFERENCES = 2, | |
50 | PERF_COUNT_CACHE_MISSES = 3, | |
51 | PERF_COUNT_BRANCH_INSTRUCTIONS = 4, | |
52 | PERF_COUNT_BRANCH_MISSES = 5, | |
53 | PERF_COUNT_BUS_CYCLES = 6, | |
54 | ||
55 | PERF_HW_EVENTS_MAX = 7, | |
56 | }; | |
e077df4f | 57 | |
b8e83514 PZ |
58 | /* |
59 | * Special "software" counters provided by the kernel, even if the hardware | |
60 | * does not support performance counters. These counters measure various | |
61 | * physical and sw events of the kernel (and allow the profiling of them as | |
62 | * well): | |
63 | */ | |
64 | enum sw_event_ids { | |
65 | PERF_COUNT_CPU_CLOCK = 0, | |
66 | PERF_COUNT_TASK_CLOCK = 1, | |
67 | PERF_COUNT_PAGE_FAULTS = 2, | |
68 | PERF_COUNT_CONTEXT_SWITCHES = 3, | |
69 | PERF_COUNT_CPU_MIGRATIONS = 4, | |
70 | PERF_COUNT_PAGE_FAULTS_MIN = 5, | |
71 | PERF_COUNT_PAGE_FAULTS_MAJ = 6, | |
72 | ||
73 | PERF_SW_EVENTS_MAX = 7, | |
0793a61d TG |
74 | }; |
75 | ||
76 | /* | |
77 | * IRQ-notification data record type: | |
78 | */ | |
9f66a381 | 79 | enum perf_counter_record_type { |
b8e83514 PZ |
80 | PERF_RECORD_SIMPLE = 0, |
81 | PERF_RECORD_IRQ = 1, | |
82 | PERF_RECORD_GROUP = 2, | |
0793a61d TG |
83 | }; |
84 | ||
f4a2deb4 PZ |
85 | #define __PERF_COUNTER_MASK(name) \ |
86 | (((1ULL << PERF_COUNTER_##name##_BITS) - 1) << \ | |
87 | PERF_COUNTER_##name##_SHIFT) | |
88 | ||
89 | #define PERF_COUNTER_RAW_BITS 1 | |
90 | #define PERF_COUNTER_RAW_SHIFT 63 | |
91 | #define PERF_COUNTER_RAW_MASK __PERF_COUNTER_MASK(RAW) | |
92 | ||
93 | #define PERF_COUNTER_CONFIG_BITS 63 | |
94 | #define PERF_COUNTER_CONFIG_SHIFT 0 | |
95 | #define PERF_COUNTER_CONFIG_MASK __PERF_COUNTER_MASK(CONFIG) | |
96 | ||
97 | #define PERF_COUNTER_TYPE_BITS 7 | |
98 | #define PERF_COUNTER_TYPE_SHIFT 56 | |
99 | #define PERF_COUNTER_TYPE_MASK __PERF_COUNTER_MASK(TYPE) | |
100 | ||
101 | #define PERF_COUNTER_EVENT_BITS 56 | |
102 | #define PERF_COUNTER_EVENT_SHIFT 0 | |
103 | #define PERF_COUNTER_EVENT_MASK __PERF_COUNTER_MASK(EVENT) | |
104 | ||
53cfbf59 PM |
105 | /* |
106 | * Bits that can be set in hw_event.read_format to request that | |
107 | * reads on the counter should return the indicated quantities, | |
108 | * in increasing order of bit value, after the counter value. | |
109 | */ | |
110 | enum perf_counter_read_format { | |
111 | PERF_FORMAT_TOTAL_TIME_ENABLED = 1, | |
112 | PERF_FORMAT_TOTAL_TIME_RUNNING = 2, | |
113 | }; | |
114 | ||
9f66a381 IM |
115 | /* |
116 | * Hardware event to monitor via a performance monitoring counter: | |
117 | */ | |
118 | struct perf_counter_hw_event { | |
f4a2deb4 PZ |
119 | /* |
120 | * The MSB of the config word signifies if the rest contains cpu | |
121 | * specific (raw) counter configuration data, if unset, the next | |
122 | * 7 bits are an event type and the rest of the bits are the event | |
123 | * identifier. | |
124 | */ | |
125 | __u64 config; | |
9f66a381 | 126 | |
f3dfd265 | 127 | __u64 irq_period; |
2743a5b0 PM |
128 | __u64 record_type; |
129 | __u64 read_format; | |
9f66a381 | 130 | |
2743a5b0 | 131 | __u64 disabled : 1, /* off by default */ |
0475f9ea | 132 | nmi : 1, /* NMI sampling */ |
0475f9ea PM |
133 | inherit : 1, /* children inherit it */ |
134 | pinned : 1, /* must always be on PMU */ | |
135 | exclusive : 1, /* only group on PMU */ | |
136 | exclude_user : 1, /* don't count user */ | |
137 | exclude_kernel : 1, /* ditto kernel */ | |
138 | exclude_hv : 1, /* ditto hypervisor */ | |
2743a5b0 | 139 | exclude_idle : 1, /* don't count when idle */ |
0a4a9391 PZ |
140 | include_tid : 1, /* include the tid */ |
141 | mmap : 1, /* include mmap data */ | |
142 | munmap : 1, /* include munmap data */ | |
0475f9ea | 143 | |
0a4a9391 | 144 | __reserved_1 : 52; |
2743a5b0 PM |
145 | |
146 | __u32 extra_config_len; | |
147 | __u32 __reserved_4; | |
9f66a381 | 148 | |
f3dfd265 | 149 | __u64 __reserved_2; |
2743a5b0 | 150 | __u64 __reserved_3; |
eab656ae TG |
151 | }; |
152 | ||
d859e29f PM |
153 | /* |
154 | * Ioctls that can be done on a perf counter fd: | |
155 | */ | |
156 | #define PERF_COUNTER_IOC_ENABLE _IO('$', 0) | |
157 | #define PERF_COUNTER_IOC_DISABLE _IO('$', 1) | |
158 | ||
37d81828 PM |
159 | /* |
160 | * Structure of the page that can be mapped via mmap | |
161 | */ | |
162 | struct perf_counter_mmap_page { | |
163 | __u32 version; /* version number of this structure */ | |
164 | __u32 compat_version; /* lowest version this is compat with */ | |
38ff667b PZ |
165 | |
166 | /* | |
167 | * Bits needed to read the hw counters in user-space. | |
168 | * | |
169 | * The index and offset should be read atomically using the seqlock: | |
170 | * | |
171 | * __u32 seq, index; | |
172 | * __s64 offset; | |
173 | * | |
174 | * again: | |
175 | * rmb(); | |
176 | * seq = pc->lock; | |
177 | * | |
178 | * if (unlikely(seq & 1)) { | |
179 | * cpu_relax(); | |
180 | * goto again; | |
181 | * } | |
182 | * | |
183 | * index = pc->index; | |
184 | * offset = pc->offset; | |
185 | * | |
186 | * rmb(); | |
187 | * if (pc->lock != seq) | |
188 | * goto again; | |
189 | * | |
190 | * After this, index contains architecture specific counter index + 1, | |
191 | * so that 0 means unavailable, offset contains the value to be added | |
192 | * to the result of the raw timer read to obtain this counter's value. | |
193 | */ | |
37d81828 PM |
194 | __u32 lock; /* seqlock for synchronization */ |
195 | __u32 index; /* hardware counter identifier */ | |
196 | __s64 offset; /* add to hardware counter value */ | |
7b732a75 | 197 | |
38ff667b PZ |
198 | /* |
199 | * Control data for the mmap() data buffer. | |
200 | * | |
201 | * User-space reading this value should issue an rmb(), on SMP capable | |
202 | * platforms, after reading this value -- see perf_counter_wakeup(). | |
203 | */ | |
7b732a75 | 204 | __u32 data_head; /* head in the data section */ |
37d81828 PM |
205 | }; |
206 | ||
5c148194 PZ |
207 | struct perf_event_header { |
208 | __u32 type; | |
209 | __u32 size; | |
210 | }; | |
211 | ||
212 | enum perf_event_type { | |
213 | PERF_EVENT_IP = 0, | |
214 | PERF_EVENT_GROUP = 1, | |
ea5d20cf | 215 | |
0a4a9391 PZ |
216 | PERF_EVENT_MMAP = 2, |
217 | PERF_EVENT_MUNMAP = 3, | |
218 | ||
ea5d20cf | 219 | __PERF_EVENT_TID = 0x100, |
5c148194 PZ |
220 | }; |
221 | ||
f3dfd265 | 222 | #ifdef __KERNEL__ |
9f66a381 | 223 | /* |
f3dfd265 | 224 | * Kernel-internal data types and definitions: |
9f66a381 IM |
225 | */ |
226 | ||
f3dfd265 PM |
227 | #ifdef CONFIG_PERF_COUNTERS |
228 | # include <asm/perf_counter.h> | |
229 | #endif | |
230 | ||
231 | #include <linux/list.h> | |
232 | #include <linux/mutex.h> | |
233 | #include <linux/rculist.h> | |
234 | #include <linux/rcupdate.h> | |
235 | #include <linux/spinlock.h> | |
d6d020e9 | 236 | #include <linux/hrtimer.h> |
f3dfd265 PM |
237 | #include <asm/atomic.h> |
238 | ||
239 | struct task_struct; | |
240 | ||
f4a2deb4 PZ |
241 | static inline u64 perf_event_raw(struct perf_counter_hw_event *hw_event) |
242 | { | |
243 | return hw_event->config & PERF_COUNTER_RAW_MASK; | |
244 | } | |
245 | ||
246 | static inline u64 perf_event_config(struct perf_counter_hw_event *hw_event) | |
247 | { | |
248 | return hw_event->config & PERF_COUNTER_CONFIG_MASK; | |
249 | } | |
250 | ||
251 | static inline u64 perf_event_type(struct perf_counter_hw_event *hw_event) | |
252 | { | |
253 | return (hw_event->config & PERF_COUNTER_TYPE_MASK) >> | |
254 | PERF_COUNTER_TYPE_SHIFT; | |
255 | } | |
256 | ||
257 | static inline u64 perf_event_id(struct perf_counter_hw_event *hw_event) | |
258 | { | |
259 | return hw_event->config & PERF_COUNTER_EVENT_MASK; | |
260 | } | |
261 | ||
0793a61d | 262 | /** |
9f66a381 | 263 | * struct hw_perf_counter - performance counter hardware details: |
0793a61d TG |
264 | */ |
265 | struct hw_perf_counter { | |
ee06094f | 266 | #ifdef CONFIG_PERF_COUNTERS |
d6d020e9 PZ |
267 | union { |
268 | struct { /* hardware */ | |
269 | u64 config; | |
270 | unsigned long config_base; | |
271 | unsigned long counter_base; | |
272 | int nmi; | |
273 | unsigned int idx; | |
274 | }; | |
275 | union { /* software */ | |
276 | atomic64_t count; | |
277 | struct hrtimer hrtimer; | |
278 | }; | |
279 | }; | |
ee06094f | 280 | atomic64_t prev_count; |
9f66a381 | 281 | u64 irq_period; |
ee06094f IM |
282 | atomic64_t period_left; |
283 | #endif | |
0793a61d TG |
284 | }; |
285 | ||
621a01ea IM |
286 | struct perf_counter; |
287 | ||
288 | /** | |
289 | * struct hw_perf_counter_ops - performance counter hw ops | |
290 | */ | |
291 | struct hw_perf_counter_ops { | |
95cdd2e7 | 292 | int (*enable) (struct perf_counter *counter); |
7671581f IM |
293 | void (*disable) (struct perf_counter *counter); |
294 | void (*read) (struct perf_counter *counter); | |
621a01ea IM |
295 | }; |
296 | ||
6a930700 IM |
297 | /** |
298 | * enum perf_counter_active_state - the states of a counter | |
299 | */ | |
300 | enum perf_counter_active_state { | |
3b6f9e5c | 301 | PERF_COUNTER_STATE_ERROR = -2, |
6a930700 IM |
302 | PERF_COUNTER_STATE_OFF = -1, |
303 | PERF_COUNTER_STATE_INACTIVE = 0, | |
304 | PERF_COUNTER_STATE_ACTIVE = 1, | |
305 | }; | |
306 | ||
9b51f66d IM |
307 | struct file; |
308 | ||
7b732a75 PZ |
309 | struct perf_mmap_data { |
310 | struct rcu_head rcu_head; | |
311 | int nr_pages; | |
c7138f37 | 312 | atomic_t wakeup; |
7b732a75 PZ |
313 | atomic_t head; |
314 | struct perf_counter_mmap_page *user_page; | |
315 | void *data_pages[0]; | |
316 | }; | |
317 | ||
925d519a PZ |
318 | struct perf_wakeup_entry { |
319 | struct perf_wakeup_entry *next; | |
320 | }; | |
321 | ||
0793a61d TG |
322 | /** |
323 | * struct perf_counter - performance counter kernel representation: | |
324 | */ | |
325 | struct perf_counter { | |
ee06094f | 326 | #ifdef CONFIG_PERF_COUNTERS |
04289bb9 | 327 | struct list_head list_entry; |
592903cd | 328 | struct list_head event_entry; |
04289bb9 | 329 | struct list_head sibling_list; |
5c148194 | 330 | int nr_siblings; |
04289bb9 | 331 | struct perf_counter *group_leader; |
5c92d124 | 332 | const struct hw_perf_counter_ops *hw_ops; |
04289bb9 | 333 | |
6a930700 | 334 | enum perf_counter_active_state state; |
c07c99b6 | 335 | enum perf_counter_active_state prev_state; |
0793a61d | 336 | atomic64_t count; |
ee06094f | 337 | |
53cfbf59 PM |
338 | /* |
339 | * These are the total time in nanoseconds that the counter | |
340 | * has been enabled (i.e. eligible to run, and the task has | |
341 | * been scheduled in, if this is a per-task counter) | |
342 | * and running (scheduled onto the CPU), respectively. | |
343 | * | |
344 | * They are computed from tstamp_enabled, tstamp_running and | |
345 | * tstamp_stopped when the counter is in INACTIVE or ACTIVE state. | |
346 | */ | |
347 | u64 total_time_enabled; | |
348 | u64 total_time_running; | |
349 | ||
350 | /* | |
351 | * These are timestamps used for computing total_time_enabled | |
352 | * and total_time_running when the counter is in INACTIVE or | |
353 | * ACTIVE state, measured in nanoseconds from an arbitrary point | |
354 | * in time. | |
355 | * tstamp_enabled: the notional time when the counter was enabled | |
356 | * tstamp_running: the notional time when the counter was scheduled on | |
357 | * tstamp_stopped: in INACTIVE state, the notional time when the | |
358 | * counter was scheduled off. | |
359 | */ | |
360 | u64 tstamp_enabled; | |
361 | u64 tstamp_running; | |
362 | u64 tstamp_stopped; | |
363 | ||
9f66a381 | 364 | struct perf_counter_hw_event hw_event; |
0793a61d TG |
365 | struct hw_perf_counter hw; |
366 | ||
367 | struct perf_counter_context *ctx; | |
368 | struct task_struct *task; | |
9b51f66d | 369 | struct file *filp; |
0793a61d | 370 | |
9b51f66d | 371 | struct perf_counter *parent; |
d859e29f PM |
372 | struct list_head child_list; |
373 | ||
53cfbf59 PM |
374 | /* |
375 | * These accumulate total time (in nanoseconds) that children | |
376 | * counters have been enabled and running, respectively. | |
377 | */ | |
378 | atomic64_t child_total_time_enabled; | |
379 | atomic64_t child_total_time_running; | |
380 | ||
0793a61d | 381 | /* |
d859e29f | 382 | * Protect attach/detach and child_list: |
0793a61d TG |
383 | */ |
384 | struct mutex mutex; | |
385 | ||
386 | int oncpu; | |
387 | int cpu; | |
388 | ||
7b732a75 PZ |
389 | /* mmap bits */ |
390 | struct mutex mmap_mutex; | |
391 | atomic_t mmap_count; | |
392 | struct perf_mmap_data *data; | |
37d81828 | 393 | |
7b732a75 | 394 | /* poll related */ |
0793a61d TG |
395 | wait_queue_head_t waitq; |
396 | /* optional: for NMIs */ | |
925d519a | 397 | struct perf_wakeup_entry wakeup; |
592903cd | 398 | |
e077df4f | 399 | void (*destroy)(struct perf_counter *); |
592903cd | 400 | struct rcu_head rcu_head; |
ee06094f | 401 | #endif |
0793a61d TG |
402 | }; |
403 | ||
404 | /** | |
405 | * struct perf_counter_context - counter context structure | |
406 | * | |
407 | * Used as a container for task counters and CPU counters as well: | |
408 | */ | |
409 | struct perf_counter_context { | |
410 | #ifdef CONFIG_PERF_COUNTERS | |
411 | /* | |
d859e29f PM |
412 | * Protect the states of the counters in the list, |
413 | * nr_active, and the list: | |
0793a61d TG |
414 | */ |
415 | spinlock_t lock; | |
d859e29f PM |
416 | /* |
417 | * Protect the list of counters. Locking either mutex or lock | |
418 | * is sufficient to ensure the list doesn't change; to change | |
419 | * the list you need to lock both the mutex and the spinlock. | |
420 | */ | |
421 | struct mutex mutex; | |
04289bb9 IM |
422 | |
423 | struct list_head counter_list; | |
592903cd | 424 | struct list_head event_list; |
0793a61d TG |
425 | int nr_counters; |
426 | int nr_active; | |
d859e29f | 427 | int is_active; |
0793a61d | 428 | struct task_struct *task; |
53cfbf59 PM |
429 | |
430 | /* | |
431 | * time_now is the current time in nanoseconds since an arbitrary | |
432 | * point in the past. For per-task counters, this is based on the | |
433 | * task clock, and for per-cpu counters it is based on the cpu clock. | |
434 | * time_lost is an offset from the task/cpu clock, used to make it | |
435 | * appear that time only passes while the context is scheduled in. | |
436 | */ | |
437 | u64 time_now; | |
438 | u64 time_lost; | |
0793a61d TG |
439 | #endif |
440 | }; | |
441 | ||
442 | /** | |
443 | * struct perf_counter_cpu_context - per cpu counter context structure | |
444 | */ | |
445 | struct perf_cpu_context { | |
446 | struct perf_counter_context ctx; | |
447 | struct perf_counter_context *task_ctx; | |
448 | int active_oncpu; | |
449 | int max_pertask; | |
3b6f9e5c | 450 | int exclusive; |
96f6d444 PZ |
451 | |
452 | /* | |
453 | * Recursion avoidance: | |
454 | * | |
455 | * task, softirq, irq, nmi context | |
456 | */ | |
457 | int recursion[4]; | |
0793a61d TG |
458 | }; |
459 | ||
460 | /* | |
461 | * Set by architecture code: | |
462 | */ | |
463 | extern int perf_max_counters; | |
464 | ||
465 | #ifdef CONFIG_PERF_COUNTERS | |
5c92d124 | 466 | extern const struct hw_perf_counter_ops * |
621a01ea IM |
467 | hw_perf_counter_init(struct perf_counter *counter); |
468 | ||
0793a61d TG |
469 | extern void perf_counter_task_sched_in(struct task_struct *task, int cpu); |
470 | extern void perf_counter_task_sched_out(struct task_struct *task, int cpu); | |
471 | extern void perf_counter_task_tick(struct task_struct *task, int cpu); | |
9b51f66d IM |
472 | extern void perf_counter_init_task(struct task_struct *child); |
473 | extern void perf_counter_exit_task(struct task_struct *child); | |
925d519a | 474 | extern void perf_counter_do_pending(void); |
0793a61d | 475 | extern void perf_counter_print_debug(void); |
1b023a96 | 476 | extern void perf_counter_unthrottle(void); |
01b2838c IM |
477 | extern u64 hw_perf_save_disable(void); |
478 | extern void hw_perf_restore(u64 ctrl); | |
1d1c7ddb IM |
479 | extern int perf_counter_task_disable(void); |
480 | extern int perf_counter_task_enable(void); | |
3cbed429 PM |
481 | extern int hw_perf_group_sched_in(struct perf_counter *group_leader, |
482 | struct perf_cpu_context *cpuctx, | |
483 | struct perf_counter_context *ctx, int cpu); | |
37d81828 | 484 | extern void perf_counter_update_userpage(struct perf_counter *counter); |
5c92d124 | 485 | |
0322cd6e PZ |
486 | extern void perf_counter_output(struct perf_counter *counter, |
487 | int nmi, struct pt_regs *regs); | |
3b6f9e5c PM |
488 | /* |
489 | * Return 1 for a software counter, 0 for a hardware counter | |
490 | */ | |
491 | static inline int is_software_counter(struct perf_counter *counter) | |
492 | { | |
f4a2deb4 PZ |
493 | return !perf_event_raw(&counter->hw_event) && |
494 | perf_event_type(&counter->hw_event) != PERF_TYPE_HARDWARE; | |
3b6f9e5c PM |
495 | } |
496 | ||
b8e83514 | 497 | extern void perf_swcounter_event(u32, u64, int, struct pt_regs *); |
15dbf27c | 498 | |
0a4a9391 PZ |
499 | extern void perf_counter_mmap(unsigned long addr, unsigned long len, |
500 | unsigned long pgoff, struct file *file); | |
501 | ||
502 | extern void perf_counter_munmap(unsigned long addr, unsigned long len, | |
503 | unsigned long pgoff, struct file *file); | |
504 | ||
0793a61d TG |
505 | #else |
506 | static inline void | |
507 | perf_counter_task_sched_in(struct task_struct *task, int cpu) { } | |
508 | static inline void | |
509 | perf_counter_task_sched_out(struct task_struct *task, int cpu) { } | |
510 | static inline void | |
511 | perf_counter_task_tick(struct task_struct *task, int cpu) { } | |
9b51f66d IM |
512 | static inline void perf_counter_init_task(struct task_struct *child) { } |
513 | static inline void perf_counter_exit_task(struct task_struct *child) { } | |
925d519a | 514 | static inline void perf_counter_do_pending(void) { } |
0793a61d | 515 | static inline void perf_counter_print_debug(void) { } |
1b023a96 | 516 | static inline void perf_counter_unthrottle(void) { } |
15dbf27c | 517 | static inline void hw_perf_restore(u64 ctrl) { } |
01b2838c | 518 | static inline u64 hw_perf_save_disable(void) { return 0; } |
1d1c7ddb IM |
519 | static inline int perf_counter_task_disable(void) { return -EINVAL; } |
520 | static inline int perf_counter_task_enable(void) { return -EINVAL; } | |
15dbf27c | 521 | |
925d519a PZ |
522 | static inline void |
523 | perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs) { } | |
524 | ||
0a4a9391 PZ |
525 | |
526 | static inline void | |
527 | perf_counter_mmap(unsigned long addr, unsigned long len, | |
528 | unsigned long pgoff, struct file *file) { } | |
529 | ||
530 | static inline void | |
531 | perf_counter_munmap(unsigned long addr, unsigned long len, | |
532 | unsigned long pgoff, struct file *file) { } | |
533 | ||
0793a61d TG |
534 | #endif |
535 | ||
f3dfd265 | 536 | #endif /* __KERNEL__ */ |
0793a61d | 537 | #endif /* _LINUX_PERF_COUNTER_H */ |