summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/perf_event.h
blob: 6960cd6d1f2319e9245a027e290b6c9e53ef5e79 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_PERF_EVENT_H
#define _ASM_X86_PERF_EVENT_H

/*
 * Performance event hw details:
 */

#define INTEL_PMC_MAX_GENERIC				       32
#define INTEL_PMC_MAX_FIXED					4
#define INTEL_PMC_IDX_FIXED				       32

#define X86_PMC_IDX_MAX					       64

#define MSR_ARCH_PERFMON_PERFCTR0			      0xc1
#define MSR_ARCH_PERFMON_PERFCTR1			      0xc2

#define MSR_ARCH_PERFMON_EVENTSEL0			     0x186
#define MSR_ARCH_PERFMON_EVENTSEL1			     0x187

#define ARCH_PERFMON_EVENTSEL_EVENT			0x000000FFULL
#define ARCH_PERFMON_EVENTSEL_UMASK			0x0000FF00ULL
#define ARCH_PERFMON_EVENTSEL_USR			(1ULL << 16)
#define ARCH_PERFMON_EVENTSEL_OS			(1ULL << 17)
#define ARCH_PERFMON_EVENTSEL_EDGE			(1ULL << 18)
#define ARCH_PERFMON_EVENTSEL_PIN_CONTROL		(1ULL << 19)
#define ARCH_PERFMON_EVENTSEL_INT			(1ULL << 20)
#define ARCH_PERFMON_EVENTSEL_ANY			(1ULL << 21)
#define ARCH_PERFMON_EVENTSEL_ENABLE			(1ULL << 22)
#define ARCH_PERFMON_EVENTSEL_INV			(1ULL << 23)
#define ARCH_PERFMON_EVENTSEL_CMASK			0xFF000000ULL

#define HSW_IN_TX					(1ULL << 32)
#define HSW_IN_TX_CHECKPOINTED				(1ULL << 33)
#define ICL_EVENTSEL_ADAPTIVE				(1ULL << 34)
#define ICL_FIXED_0_ADAPTIVE				(1ULL << 32)

#define AMD64_EVENTSEL_INT_CORE_ENABLE			(1ULL << 36)
#define AMD64_EVENTSEL_GUESTONLY			(1ULL << 40)
#define AMD64_EVENTSEL_HOSTONLY				(1ULL << 41)

#define AMD64_EVENTSEL_INT_CORE_SEL_SHIFT		37
#define AMD64_EVENTSEL_INT_CORE_SEL_MASK		\
	(0xFULL << AMD64_EVENTSEL_INT_CORE_SEL_SHIFT)

#define AMD64_EVENTSEL_EVENT	\
	(ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32))
#define INTEL_ARCH_EVENT_MASK	\
	(ARCH_PERFMON_EVENTSEL_UMASK | ARCH_PERFMON_EVENTSEL_EVENT)

#define AMD64_L3_SLICE_SHIFT				48
#define AMD64_L3_SLICE_MASK				\
	(0xFULL << AMD64_L3_SLICE_SHIFT)
#define AMD64_L3_SLICEID_MASK				\
	(0x7ULL << AMD64_L3_SLICE_SHIFT)

#define AMD64_L3_THREAD_SHIFT				56
#define AMD64_L3_THREAD_MASK				\
	(0xFFULL << AMD64_L3_THREAD_SHIFT)
#define AMD64_L3_F19H_THREAD_MASK			\
	(0x3ULL << AMD64_L3_THREAD_SHIFT)

#define AMD64_L3_EN_ALL_CORES				BIT_ULL(47)
#define AMD64_L3_EN_ALL_SLICES				BIT_ULL(46)

#define AMD64_L3_COREID_SHIFT				42
#define AMD64_L3_COREID_MASK				\
	(0x7ULL << AMD64_L3_COREID_SHIFT)

#define X86_RAW_EVENT_MASK		\
	(ARCH_PERFMON_EVENTSEL_EVENT |	\
	 ARCH_PERFMON_EVENTSEL_UMASK |	\
	 ARCH_PERFMON_EVENTSEL_EDGE  |	\
	 ARCH_PERFMON_EVENTSEL_INV   |	\
	 ARCH_PERFMON_EVENTSEL_CMASK)
#define X86_ALL_EVENT_FLAGS  			\
	(ARCH_PERFMON_EVENTSEL_EDGE |  		\
	 ARCH_PERFMON_EVENTSEL_INV | 		\
	 ARCH_PERFMON_EVENTSEL_CMASK | 		\
	 ARCH_PERFMON_EVENTSEL_ANY | 		\
	 ARCH_PERFMON_EVENTSEL_PIN_CONTROL | 	\
	 HSW_IN_TX | 				\
	 HSW_IN_TX_CHECKPOINTED)
#define AMD64_RAW_EVENT_MASK		\
	(X86_RAW_EVENT_MASK          |  \
	 AMD64_EVENTSEL_EVENT)
#define AMD64_RAW_EVENT_MASK_NB		\
	(AMD64_EVENTSEL_EVENT        |  \
	 ARCH_PERFMON_EVENTSEL_UMASK)
#define AMD64_NUM_COUNTERS				4
#define AMD64_NUM_COUNTERS_CORE				6
#define AMD64_NUM_COUNTERS_NB				4

#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL		0x3c
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK		(0x00 << 8)
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX		0
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
		(1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))

#define ARCH_PERFMON_BRANCH_MISSES_RETIRED		6
#define ARCH_PERFMON_EVENTS_COUNT			7

#define PEBS_DATACFG_MEMINFO	BIT_ULL(0)
#define PEBS_DATACFG_GP	BIT_ULL(1)
#define PEBS_DATACFG_XMMS	BIT_ULL(2)
#define PEBS_DATACFG_LBRS	BIT_ULL(3)
#define PEBS_DATACFG_LBR_SHIFT	24

/*
 * Intel "Architectural Performance Monitoring" CPUID
 * detection/enumeration details:
 */
union cpuid10_eax {
	struct {
		unsigned int version_id:8;
		unsigned int num_counters:8;
		unsigned int bit_width:8;
		unsigned int mask_length:8;
	} split;
	unsigned int full;
};

union cpuid10_ebx {
	struct {
		unsigned int no_unhalted_core_cycles:1;
		unsigned int no_instructions_retired:1;
		unsigned int no_unhalted_reference_cycles:1;
		unsigned int no_llc_reference:1;
		unsigned int no_llc_misses:1;
		unsigned int no_branch_instruction_retired:1;
		unsigned int no_branch_misses_retired:1;
	} split;
	unsigned int full;
};

union cpuid10_edx {
	struct {
		unsigned int num_counters_fixed:5;
		unsigned int bit_width_fixed:8;
		unsigned int reserved:19;
	} split;
	unsigned int full;
};

/*
 * Intel Architectural LBR CPUID detection/enumeration details:
 */
union cpuid28_eax {
	struct {
		/* Supported LBR depth values */
		unsigned int	lbr_depth_mask:8;
		unsigned int	reserved:22;
		/* Deep C-state Reset */
		unsigned int	lbr_deep_c_reset:1;
		/* IP values contain LIP */
		unsigned int	lbr_lip:1;
	} split;
	unsigned int		full;
};

union cpuid28_ebx {
	struct {
		/* CPL Filtering Supported */
		unsigned int    lbr_cpl:1;
		/* Branch Filtering Supported */
		unsigned int    lbr_filter:1;
		/* Call-stack Mode Supported */
		unsigned int    lbr_call_stack:1;
	} split;
	unsigned int            full;
};

union cpuid28_ecx {
	struct {
		/* Mispredict Bit Supported */
		unsigned int    lbr_mispred:1;
		/* Timed LBRs Supported */
		unsigned int    lbr_timed_lbr:1;
		/* Branch Type Field Supported */
		unsigned int    lbr_br_type:1;
	} split;
	unsigned int            full;
};

struct x86_pmu_capability {
	int		version;
	int		num_counters_gp;
	int		num_counters_fixed;
	int		bit_width_gp;
	int		bit_width_fixed;
	unsigned int	events_mask;
	int		events_mask_len;
};

/*
 * Fixed-purpose performance events:
 */

/* RDPMC offset for Fixed PMCs */
#define INTEL_PMC_FIXED_RDPMC_BASE		(1 << 30)
#define INTEL_PMC_FIXED_RDPMC_METRICS		(1 << 29)

/*
 * All the fixed-mode PMCs are configured via this single MSR:
 */
#define MSR_ARCH_PERFMON_FIXED_CTR_CTRL	0x38d

/*
 * There is no event-code assigned to the fixed-mode PMCs.
 *
 * For a fixed-mode PMC, which has an equivalent event on a general-purpose
 * PMC, the event-code of the equivalent event is used for the fixed-mode PMC,
 * e.g., Instr_Retired.Any and CPU_CLK_Unhalted.Core.
 *
 * For a fixed-mode PMC, which doesn't have an equivalent event, a
 * pseudo-encoding is used, e.g., CPU_CLK_Unhalted.Ref and TOPDOWN.SLOTS.
 * The pseudo event-code for a fixed-mode PMC must be 0x00.
 * The pseudo umask-code is 0xX. The X equals the index of the fixed
 * counter + 1, e.g., the fixed counter 2 has the pseudo-encoding 0x0300.
 *
 * The counts are available in separate MSRs:
 */

/* Instr_Retired.Any: */
#define MSR_ARCH_PERFMON_FIXED_CTR0	0x309
#define INTEL_PMC_IDX_FIXED_INSTRUCTIONS	(INTEL_PMC_IDX_FIXED + 0)

/* CPU_CLK_Unhalted.Core: */
#define MSR_ARCH_PERFMON_FIXED_CTR1	0x30a
#define INTEL_PMC_IDX_FIXED_CPU_CYCLES	(INTEL_PMC_IDX_FIXED + 1)

/* CPU_CLK_Unhalted.Ref: event=0x00,umask=0x3 (pseudo-encoding) */
#define MSR_ARCH_PERFMON_FIXED_CTR2	0x30b
#define INTEL_PMC_IDX_FIXED_REF_CYCLES	(INTEL_PMC_IDX_FIXED + 2)
#define INTEL_PMC_MSK_FIXED_REF_CYCLES	(1ULL << INTEL_PMC_IDX_FIXED_REF_CYCLES)

/* TOPDOWN.SLOTS: event=0x00,umask=0x4 (pseudo-encoding) */
#define MSR_ARCH_PERFMON_FIXED_CTR3	0x30c
#define INTEL_PMC_IDX_FIXED_SLOTS	(INTEL_PMC_IDX_FIXED + 3)
#define INTEL_PMC_MSK_FIXED_SLOTS	(1ULL << INTEL_PMC_IDX_FIXED_SLOTS)

/*
 * We model BTS tracing as another fixed-mode PMC.
 *
 * We choose the value 47 for the fixed index of BTS, since lower
 * values are used by actual fixed events and higher values are used
 * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
 */
#define INTEL_PMC_IDX_FIXED_BTS			(INTEL_PMC_IDX_FIXED + 15)

/*
 * The PERF_METRICS MSR is modeled as several magic fixed-mode PMCs, one for
 * each TopDown metric event.
 *
 * Internally the TopDown metric events are mapped to the FxCtr 3 (SLOTS).
 */
#define INTEL_PMC_IDX_METRIC_BASE		(INTEL_PMC_IDX_FIXED + 16)
#define INTEL_PMC_IDX_TD_RETIRING		(INTEL_PMC_IDX_METRIC_BASE + 0)
#define INTEL_PMC_IDX_TD_BAD_SPEC		(INTEL_PMC_IDX_METRIC_BASE + 1)
#define INTEL_PMC_IDX_TD_FE_BOUND		(INTEL_PMC_IDX_METRIC_BASE + 2)
#define INTEL_PMC_IDX_TD_BE_BOUND		(INTEL_PMC_IDX_METRIC_BASE + 3)
#define INTEL_PMC_IDX_METRIC_END		INTEL_PMC_IDX_TD_BE_BOUND
#define INTEL_PMC_MSK_TOPDOWN			((0xfull << INTEL_PMC_IDX_METRIC_BASE) | \
						INTEL_PMC_MSK_FIXED_SLOTS)

/*
 * There is no event-code assigned to the TopDown events.
 *
 * For the slots event, use the pseudo code of the fixed counter 3.
 *
 * For the metric events, the pseudo event-code is 0x00.
 * The pseudo umask-code starts from the middle of the pseudo event
 * space, 0x80.
 */
#define INTEL_TD_SLOTS				0x0400	/* TOPDOWN.SLOTS */
/* Level 1 metrics */
#define INTEL_TD_METRIC_RETIRING		0x8000	/* Retiring metric */
#define INTEL_TD_METRIC_BAD_SPEC		0x8100	/* Bad speculation metric */
#define INTEL_TD_METRIC_FE_BOUND		0x8200	/* FE bound metric */
#define INTEL_TD_METRIC_BE_BOUND		0x8300	/* BE bound metric */
#define INTEL_TD_METRIC_MAX			INTEL_TD_METRIC_BE_BOUND
#define INTEL_TD_METRIC_NUM			4

static inline bool is_metric_idx(int idx)
{
	return (unsigned)(idx - INTEL_PMC_IDX_METRIC_BASE) < INTEL_TD_METRIC_NUM;
}

static inline bool is_topdown_idx(int idx)
{
	return is_metric_idx(idx) || idx == INTEL_PMC_IDX_FIXED_SLOTS;
}

#define INTEL_PMC_OTHER_TOPDOWN_BITS(bit)	\
			(~(0x1ull << bit) & INTEL_PMC_MSK_TOPDOWN)

#define GLOBAL_STATUS_COND_CHG			BIT_ULL(63)
#define GLOBAL_STATUS_BUFFER_OVF_BIT		62
#define GLOBAL_STATUS_BUFFER_OVF		BIT_ULL(GLOBAL_STATUS_BUFFER_OVF_BIT)
#define GLOBAL_STATUS_UNC_OVF			BIT_ULL(61)
#define GLOBAL_STATUS_ASIF			BIT_ULL(60)
#define GLOBAL_STATUS_COUNTERS_FROZEN		BIT_ULL(59)
#define GLOBAL_STATUS_LBRS_FROZEN_BIT		58
#define GLOBAL_STATUS_LBRS_FROZEN		BIT_ULL(GLOBAL_STATUS_LBRS_FROZEN_BIT)
#define GLOBAL_STATUS_TRACE_TOPAPMI_BIT		55
#define GLOBAL_STATUS_TRACE_TOPAPMI		BIT_ULL(GLOBAL_STATUS_TRACE_TOPAPMI_BIT)
#define GLOBAL_STATUS_PERF_METRICS_OVF_BIT	48

#define GLOBAL_CTRL_EN_PERF_METRICS		48
/*
 * We model guest LBR event tracing as another fixed-mode PMC like BTS.
 *
 * We choose bit 58 because it's used to indicate LBR stack frozen state
 * for architectural perfmon v4, also we unconditionally mask that bit in
 * the handle_pmi_common(), so it'll never be set in the overflow handling.
 *
 * With this fake counter assigned, the guest LBR event user (such as KVM),
 * can program the LBR registers on its own, and we don't actually do anything
 * with then in the host context.
 */
#define INTEL_PMC_IDX_FIXED_VLBR	(GLOBAL_STATUS_LBRS_FROZEN_BIT)

/*
 * Pseudo-encoding the guest LBR event as event=0x00,umask=0x1b,
 * since it would claim bit 58 which is effectively Fixed26.
 */
#define INTEL_FIXED_VLBR_EVENT	0x1b00

/*
 * Adaptive PEBS v4
 */

struct pebs_basic {
	u64 format_size;
	u64 ip;
	u64 applicable_counters;
	u64 tsc;
};

struct pebs_meminfo {
	u64 address;
	u64 aux;
	u64 latency;
	u64 tsx_tuning;
};

struct pebs_gprs {
	u64 flags, ip, ax, cx, dx, bx, sp, bp, si, di;
	u64 r8, r9, r10, r11, r12, r13, r14, r15;
};

struct pebs_xmm {
	u64 xmm[16*2];	/* two entries for each register */
};

/*
 * IBS cpuid feature detection
 */

#define IBS_CPUID_FEATURES		0x8000001b

/*
 * Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but
 * bit 0 is used to indicate the existence of IBS.
 */
#define IBS_CAPS_AVAIL			(1U<<0)
#define IBS_CAPS_FETCHSAM		(1U<<1)
#define IBS_CAPS_OPSAM			(1U<<2)
#define IBS_CAPS_RDWROPCNT		(1U<<3)
#define IBS_CAPS_OPCNT			(1U<<4)
#define IBS_CAPS_BRNTRGT		(1U<<5)
#define IBS_CAPS_OPCNTEXT		(1U<<6)
#define IBS_CAPS_RIPINVALIDCHK		(1U<<7)
#define IBS_CAPS_OPBRNFUSE		(1U<<8)
#define IBS_CAPS_FETCHCTLEXTD		(1U<<9)
#define IBS_CAPS_OPDATA4		(1U<<10)

#define IBS_CAPS_DEFAULT		(IBS_CAPS_AVAIL		\
					 | IBS_CAPS_FETCHSAM	\
					 | IBS_CAPS_OPSAM)

/*
 * IBS APIC setup
 */
#define IBSCTL				0x1cc
#define IBSCTL_LVT_OFFSET_VALID		(1ULL<<8)
#define IBSCTL_LVT_OFFSET_MASK		0x0F

/* IBS fetch bits/masks */
#define IBS_FETCH_RAND_EN	(1ULL<<57)
#define IBS_FETCH_VAL		(1ULL<<49)
#define IBS_FETCH_ENABLE	(1ULL<<48)
#define IBS_FETCH_CNT		0xFFFF0000ULL
#define IBS_FETCH_MAX_CNT	0x0000FFFFULL

/*
 * IBS op bits/masks
 * The lower 7 bits of the current count are random bits
 * preloaded by hardware and ignored in software
 */
#define IBS_OP_CUR_CNT		(0xFFF80ULL<<32)
#define IBS_OP_CUR_CNT_RAND	(0x0007FULL<<32)
#define IBS_OP_CNT_CTL		(1ULL<<19)
#define IBS_OP_VAL		(1ULL<<18)
#define IBS_OP_ENABLE		(1ULL<<17)
#define IBS_OP_MAX_CNT		0x0000FFFFULL
#define IBS_OP_MAX_CNT_EXT	0x007FFFFFULL	/* not a register bit mask */
#define IBS_OP_MAX_CNT_EXT_MASK	(0x7FULL<<20)	/* separate upper 7 bits */
#define IBS_RIP_INVALID		(1ULL<<38)

#ifdef CONFIG_X86_LOCAL_APIC
extern u32 get_ibs_caps(void);
#else
static inline u32 get_ibs_caps(void) { return 0; }
#endif

#ifdef CONFIG_PERF_EVENTS
extern void perf_events_lapic_init(void);

/*
 * Abuse bits {3,5} of the cpu eflags register. These flags are otherwise
 * unused and ABI specified to be 0, so nobody should care what we do with
 * them.
 *
 * EXACT - the IP points to the exact instruction that triggered the
 *         event (HW bugs exempt).
 * VM    - original X86_VM_MASK; see set_linear_ip().
 */
#define PERF_EFLAGS_EXACT	(1UL << 3)
#define PERF_EFLAGS_VM		(1UL << 5)

struct pt_regs;
struct x86_perf_regs {
	struct pt_regs	regs;
	u64		*xmm_regs;
};

extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
extern unsigned long perf_misc_flags(struct pt_regs *regs);
#define perf_misc_flags(regs)	perf_misc_flags(regs)

#include <asm/stacktrace.h>

/*
 * We abuse bit 3 from flags to pass exact information, see perf_misc_flags
 * and the comment with PERF_EFLAGS_EXACT.
 */
#define perf_arch_fetch_caller_regs(regs, __ip)		{	\
	(regs)->ip = (__ip);					\
	(regs)->sp = (unsigned long)__builtin_frame_address(0);	\
	(regs)->cs = __KERNEL_CS;				\
	regs->flags = 0;					\
}

struct perf_guest_switch_msr {
	unsigned msr;
	u64 host, guest;
};

struct x86_pmu_lbr {
	unsigned int	nr;
	unsigned int	from;
	unsigned int	to;
	unsigned int	info;
};

extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
extern void perf_check_microcode(void);
extern int x86_perf_rdpmc_index(struct perf_event *event);
#else
static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
{
	memset(cap, 0, sizeof(*cap));
}

static inline void perf_events_lapic_init(void)	{ }
static inline void perf_check_microcode(void) { }
#endif

#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL)
extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
extern int x86_perf_get_lbr(struct x86_pmu_lbr *lbr);
#else
static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
{
	*nr = 0;
	return NULL;
}
static inline int x86_perf_get_lbr(struct x86_pmu_lbr *lbr)
{
	return -1;
}
#endif

#ifdef CONFIG_CPU_SUP_INTEL
 extern void intel_pt_handle_vmx(int on);
#else
static inline void intel_pt_handle_vmx(int on)
{

}
#endif

#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_AMD)
 extern void amd_pmu_enable_virt(void);
 extern void amd_pmu_disable_virt(void);
#else
 static inline void amd_pmu_enable_virt(void) { }
 static inline void amd_pmu_disable_virt(void) { }
#endif

#define arch_perf_out_copy_user copy_from_user_nmi

#endif /* _ASM_X86_PERF_EVENT_H */