arch/x86/include/asm/perf_event.h - linux - Git at Google

 #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					3
 #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 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 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

 /*
  * 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;
 };

 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:
  */

 /*
  * All 3 fixed-mode PMCs are configured via this single MSR:
  */
 #define MSR_ARCH_PERFMON_FIXED_CTR_CTRL	0x38d

 /*
  * The counts are available in three 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: */
 #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)

 /*
  * We model BTS tracing as another fixed-mode PMC.
  *
  * We choose a value in the middle of the fixed event range, 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 + 16)

 #define GLOBAL_STATUS_COND_CHG				BIT_ULL(63)
 #define GLOBAL_STATUS_BUFFER_OVF			BIT_ULL(62)
 #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_ULL(58)

 /*
  * 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 */
 /* lower 4 bits of the current count are ignored: */
 #define IBS_OP_CUR_CNT		(0xFFFF0ULL<<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_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;
 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)->bp = caller_frame_pointer();			\
 	(regs)->cs = __KERNEL_CS;				\
 	regs->flags = 0;					\
 	asm volatile(						\
 		_ASM_MOV "%%"_ASM_SP ", %0\n"			\
 		: "=m" ((regs)->sp)				\
 		:: "memory"					\
 	);							\
 }

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

 extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
 extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
 extern void perf_check_microcode(void);
 #else
 static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
 {
 	*nr = 0;
 	return NULL;
 }

 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_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 */
	#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 3
	#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 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 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

	/*
	* 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;
	};

	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:
	*/

	/*
	* All 3 fixed-mode PMCs are configured via this single MSR:
	*/
	#define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d

	/*
	* The counts are available in three 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: */
	#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)

	/*
	* We model BTS tracing as another fixed-mode PMC.
	*
	* We choose a value in the middle of the fixed event range, 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 + 16)

	#define GLOBAL_STATUS_COND_CHG BIT_ULL(63)
	#define GLOBAL_STATUS_BUFFER_OVF BIT_ULL(62)
	#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_ULL(58)

	/*
	* 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 */
	/* lower 4 bits of the current count are ignored: */
	#define IBS_OP_CUR_CNT (0xFFFF0ULL<<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_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;
	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)->bp = caller_frame_pointer(); \
	(regs)->cs = __KERNEL_CS; \
	regs->flags = 0; \
	asm volatile( \
	_ASM_MOV "%%"_ASM_SP ", %0\n" \
	: "=m" ((regs)->sp) \
	:: "memory" \
	); \
	}

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

	extern struct perf_guest_switch_msr perf_guest_get_msrs(int nr);
	extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
	extern void perf_check_microcode(void);
	#else
	static inline struct perf_guest_switch_msr perf_guest_get_msrs(int nr)
	{
	*nr = 0;
	return NULL;
	}

	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_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 */