- 根目录:
- arch
- x86
- include
- asm
- 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 */