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linuxdebug/arch/x86/events/perf_event.h

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* Performance events x86 architecture header
*
* Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
* Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar
* Copyright (C) 2009 Jaswinder Singh Rajput
* Copyright (C) 2009 Advanced Micro Devices, Inc., Robert Richter
* Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra
* Copyright (C) 2009 Intel Corporation, <markus.t.metzger@intel.com>
* Copyright (C) 2009 Google, Inc., Stephane Eranian
*
* For licencing details see kernel-base/COPYING
*/
#include <linux/perf_event.h>
#include <asm/fpu/xstate.h>
#include <asm/intel_ds.h>
#include <asm/cpu.h>
/* To enable MSR tracing please use the generic trace points. */
/*
* | NHM/WSM | SNB |
* register -------------------------------
* | HT | no HT | HT | no HT |
*-----------------------------------------
* offcore | core | core | cpu | core |
* lbr_sel | core | core | cpu | core |
* ld_lat | cpu | core | cpu | core |
*-----------------------------------------
*
* Given that there is a small number of shared regs,
* we can pre-allocate their slot in the per-cpu
* per-core reg tables.
*/
enum extra_reg_type {
EXTRA_REG_NONE = -1, /* not used */
EXTRA_REG_RSP_0 = 0, /* offcore_response_0 */
EXTRA_REG_RSP_1 = 1, /* offcore_response_1 */
EXTRA_REG_LBR = 2, /* lbr_select */
EXTRA_REG_LDLAT = 3, /* ld_lat_threshold */
EXTRA_REG_FE = 4, /* fe_* */
EXTRA_REG_MAX /* number of entries needed */
};
struct event_constraint {
union {
unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
u64 idxmsk64;
};
u64 code;
u64 cmask;
int weight;
int overlap;
int flags;
unsigned int size;
};
static inline bool constraint_match(struct event_constraint *c, u64 ecode)
{
return ((ecode & c->cmask) - c->code) <= (u64)c->size;
}
#define PERF_ARCH(name, val) \
PERF_X86_EVENT_##name = val,
/*
* struct hw_perf_event.flags flags
*/
enum {
#include "perf_event_flags.h"
};
#undef PERF_ARCH
#define PERF_ARCH(name, val) \
static_assert((PERF_X86_EVENT_##name & PERF_EVENT_FLAG_ARCH) == \
PERF_X86_EVENT_##name);
#include "perf_event_flags.h"
#undef PERF_ARCH
static inline bool is_topdown_count(struct perf_event *event)
{
return event->hw.flags & PERF_X86_EVENT_TOPDOWN;
}
static inline bool is_metric_event(struct perf_event *event)
{
u64 config = event->attr.config;
return ((config & ARCH_PERFMON_EVENTSEL_EVENT) == 0) &&
((config & INTEL_ARCH_EVENT_MASK) >= INTEL_TD_METRIC_RETIRING) &&
((config & INTEL_ARCH_EVENT_MASK) <= INTEL_TD_METRIC_MAX);
}
static inline bool is_slots_event(struct perf_event *event)
{
return (event->attr.config & INTEL_ARCH_EVENT_MASK) == INTEL_TD_SLOTS;
}
static inline bool is_topdown_event(struct perf_event *event)
{
return is_metric_event(event) || is_slots_event(event);
}
struct amd_nb {
int nb_id; /* NorthBridge id */
int refcnt; /* reference count */
struct perf_event *owners[X86_PMC_IDX_MAX];
struct event_constraint event_constraints[X86_PMC_IDX_MAX];
};
#define PEBS_COUNTER_MASK ((1ULL << MAX_PEBS_EVENTS) - 1)
#define PEBS_PMI_AFTER_EACH_RECORD BIT_ULL(60)
#define PEBS_OUTPUT_OFFSET 61
#define PEBS_OUTPUT_MASK (3ull << PEBS_OUTPUT_OFFSET)
#define PEBS_OUTPUT_PT (1ull << PEBS_OUTPUT_OFFSET)
#define PEBS_VIA_PT_MASK (PEBS_OUTPUT_PT | PEBS_PMI_AFTER_EACH_RECORD)
/*
* Flags PEBS can handle without an PMI.
*
* TID can only be handled by flushing at context switch.
* REGS_USER can be handled for events limited to ring 3.
*
*/
#define LARGE_PEBS_FLAGS \
(PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \
PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \
PERF_SAMPLE_PERIOD | PERF_SAMPLE_CODE_PAGE_SIZE | \
PERF_SAMPLE_WEIGHT_TYPE)
#define PEBS_GP_REGS \
((1ULL << PERF_REG_X86_AX) | \
(1ULL << PERF_REG_X86_BX) | \
(1ULL << PERF_REG_X86_CX) | \
(1ULL << PERF_REG_X86_DX) | \
(1ULL << PERF_REG_X86_DI) | \
(1ULL << PERF_REG_X86_SI) | \
(1ULL << PERF_REG_X86_SP) | \
(1ULL << PERF_REG_X86_BP) | \
(1ULL << PERF_REG_X86_IP) | \
(1ULL << PERF_REG_X86_FLAGS) | \
(1ULL << PERF_REG_X86_R8) | \
(1ULL << PERF_REG_X86_R9) | \
(1ULL << PERF_REG_X86_R10) | \
(1ULL << PERF_REG_X86_R11) | \
(1ULL << PERF_REG_X86_R12) | \
(1ULL << PERF_REG_X86_R13) | \
(1ULL << PERF_REG_X86_R14) | \
(1ULL << PERF_REG_X86_R15))
/*
* Per register state.
*/
struct er_account {
raw_spinlock_t lock; /* per-core: protect structure */
u64 config; /* extra MSR config */
u64 reg; /* extra MSR number */
atomic_t ref; /* reference count */
};
/*
* Per core/cpu state
*
* Used to coordinate shared registers between HT threads or
* among events on a single PMU.
*/
struct intel_shared_regs {
struct er_account regs[EXTRA_REG_MAX];
int refcnt; /* per-core: #HT threads */
unsigned core_id; /* per-core: core id */
};
enum intel_excl_state_type {
INTEL_EXCL_UNUSED = 0, /* counter is unused */
INTEL_EXCL_SHARED = 1, /* counter can be used by both threads */
INTEL_EXCL_EXCLUSIVE = 2, /* counter can be used by one thread only */
};
struct intel_excl_states {
enum intel_excl_state_type state[X86_PMC_IDX_MAX];
bool sched_started; /* true if scheduling has started */
};
struct intel_excl_cntrs {
raw_spinlock_t lock;
struct intel_excl_states states[2];
union {
u16 has_exclusive[2];
u32 exclusive_present;
};
int refcnt; /* per-core: #HT threads */
unsigned core_id; /* per-core: core id */
};
struct x86_perf_task_context;
#define MAX_LBR_ENTRIES 32
enum {
LBR_FORMAT_32 = 0x00,
LBR_FORMAT_LIP = 0x01,
LBR_FORMAT_EIP = 0x02,
LBR_FORMAT_EIP_FLAGS = 0x03,
LBR_FORMAT_EIP_FLAGS2 = 0x04,
LBR_FORMAT_INFO = 0x05,
LBR_FORMAT_TIME = 0x06,
LBR_FORMAT_INFO2 = 0x07,
LBR_FORMAT_MAX_KNOWN = LBR_FORMAT_INFO2,
};
enum {
X86_PERF_KFREE_SHARED = 0,
X86_PERF_KFREE_EXCL = 1,
X86_PERF_KFREE_MAX
};
struct cpu_hw_events {
/*
* Generic x86 PMC bits
*/
struct perf_event *events[X86_PMC_IDX_MAX]; /* in counter order */
unsigned long active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
unsigned long dirty[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
int enabled;
int n_events; /* the # of events in the below arrays */
int n_added; /* the # last events in the below arrays;
they've never been enabled yet */
int n_txn; /* the # last events in the below arrays;
added in the current transaction */
int n_txn_pair;
int n_txn_metric;
int assign[X86_PMC_IDX_MAX]; /* event to counter assignment */
u64 tags[X86_PMC_IDX_MAX];
struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
struct event_constraint *event_constraint[X86_PMC_IDX_MAX];
int n_excl; /* the number of exclusive events */
unsigned int txn_flags;
int is_fake;
/*
* Intel DebugStore bits
*/
struct debug_store *ds;
void *ds_pebs_vaddr;
void *ds_bts_vaddr;
u64 pebs_enabled;
int n_pebs;
int n_large_pebs;
int n_pebs_via_pt;
int pebs_output;
/* Current super set of events hardware configuration */
u64 pebs_data_cfg;
u64 active_pebs_data_cfg;
int pebs_record_size;
/* Intel Fixed counter configuration */
u64 fixed_ctrl_val;
u64 active_fixed_ctrl_val;
/*
* Intel LBR bits
*/
int lbr_users;
int lbr_pebs_users;
struct perf_branch_stack lbr_stack;
struct perf_branch_entry lbr_entries[MAX_LBR_ENTRIES];
union {
struct er_account *lbr_sel;
struct er_account *lbr_ctl;
};
u64 br_sel;
void *last_task_ctx;
int last_log_id;
int lbr_select;
void *lbr_xsave;
/*
* Intel host/guest exclude bits
*/
u64 intel_ctrl_guest_mask;
u64 intel_ctrl_host_mask;
struct perf_guest_switch_msr guest_switch_msrs[X86_PMC_IDX_MAX];
/*
* Intel checkpoint mask
*/
u64 intel_cp_status;
/*
* manage shared (per-core, per-cpu) registers
* used on Intel NHM/WSM/SNB
*/
struct intel_shared_regs *shared_regs;
/*
* manage exclusive counter access between hyperthread
*/
struct event_constraint *constraint_list; /* in enable order */
struct intel_excl_cntrs *excl_cntrs;
int excl_thread_id; /* 0 or 1 */
/*
* SKL TSX_FORCE_ABORT shadow
*/
u64 tfa_shadow;
/*
* Perf Metrics
*/
/* number of accepted metrics events */
int n_metric;
/*
* AMD specific bits
*/
struct amd_nb *amd_nb;
int brs_active; /* BRS is enabled */
/* Inverted mask of bits to clear in the perf_ctr ctrl registers */
u64 perf_ctr_virt_mask;
int n_pair; /* Large increment events */
void *kfree_on_online[X86_PERF_KFREE_MAX];
struct pmu *pmu;
};
#define __EVENT_CONSTRAINT_RANGE(c, e, n, m, w, o, f) { \
{ .idxmsk64 = (n) }, \
.code = (c), \
.size = (e) - (c), \
.cmask = (m), \
.weight = (w), \
.overlap = (o), \
.flags = f, \
}
#define __EVENT_CONSTRAINT(c, n, m, w, o, f) \
__EVENT_CONSTRAINT_RANGE(c, c, n, m, w, o, f)
#define EVENT_CONSTRAINT(c, n, m) \
__EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 0, 0)
/*
* The constraint_match() function only works for 'simple' event codes
* and not for extended (AMD64_EVENTSEL_EVENT) events codes.
*/
#define EVENT_CONSTRAINT_RANGE(c, e, n, m) \
__EVENT_CONSTRAINT_RANGE(c, e, n, m, HWEIGHT(n), 0, 0)
#define INTEL_EXCLEVT_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT, HWEIGHT(n),\
0, PERF_X86_EVENT_EXCL)
/*
* The overlap flag marks event constraints with overlapping counter
* masks. This is the case if the counter mask of such an event is not
* a subset of any other counter mask of a constraint with an equal or
* higher weight, e.g.:
*
* c_overlaps = EVENT_CONSTRAINT_OVERLAP(0, 0x09, 0);
* c_another1 = EVENT_CONSTRAINT(0, 0x07, 0);
* c_another2 = EVENT_CONSTRAINT(0, 0x38, 0);
*
* The event scheduler may not select the correct counter in the first
* cycle because it needs to know which subsequent events will be
* scheduled. It may fail to schedule the events then. So we set the
* overlap flag for such constraints to give the scheduler a hint which
* events to select for counter rescheduling.
*
* Care must be taken as the rescheduling algorithm is O(n!) which
* will increase scheduling cycles for an over-committed system
* dramatically. The number of such EVENT_CONSTRAINT_OVERLAP() macros
* and its counter masks must be kept at a minimum.
*/
#define EVENT_CONSTRAINT_OVERLAP(c, n, m) \
__EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 1, 0)
/*
* Constraint on the Event code.
*/
#define INTEL_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT)
/*
* Constraint on a range of Event codes
*/
#define INTEL_EVENT_CONSTRAINT_RANGE(c, e, n) \
EVENT_CONSTRAINT_RANGE(c, e, n, ARCH_PERFMON_EVENTSEL_EVENT)
/*
* Constraint on the Event code + UMask + fixed-mask
*
* filter mask to validate fixed counter events.
* the following filters disqualify for fixed counters:
* - inv
* - edge
* - cnt-mask
* - in_tx
* - in_tx_checkpointed
* The other filters are supported by fixed counters.
* The any-thread option is supported starting with v3.
*/
#define FIXED_EVENT_FLAGS (X86_RAW_EVENT_MASK|HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)
#define FIXED_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS)
/*
* The special metric counters do not actually exist. They are calculated from
* the combination of the FxCtr3 + MSR_PERF_METRICS.
*
* The special metric counters are mapped to a dummy offset for the scheduler.
* The sharing between multiple users of the same metric without multiplexing
* is not allowed, even though the hardware supports that in principle.
*/
#define METRIC_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, (1ULL << (INTEL_PMC_IDX_METRIC_BASE + n)), \
INTEL_ARCH_EVENT_MASK)
/*
* Constraint on the Event code + UMask
*/
#define INTEL_UEVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
/* Constraint on specific umask bit only + event */
#define INTEL_UBIT_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|(c))
/* Like UEVENT_CONSTRAINT, but match flags too */
#define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
#define INTEL_EXCLUEVT_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \
HWEIGHT(n), 0, PERF_X86_EVENT_EXCL)
#define INTEL_PLD_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT)
#define INTEL_PSD_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_STLAT)
#define INTEL_PST_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST)
#define INTEL_HYBRID_LAT_CONSTRAINT(c, n) \
__EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LAT_HYBRID)
/* Event constraint, but match on all event flags too. */
#define INTEL_FLAGS_EVENT_CONSTRAINT(c, n) \
EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS)
#define INTEL_FLAGS_EVENT_CONSTRAINT_RANGE(c, e, n) \
EVENT_CONSTRAINT_RANGE(c, e, n, ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS)
/* Check only flags, but allow all event/umask */
#define INTEL_ALL_EVENT_CONSTRAINT(code, n) \
EVENT_CONSTRAINT(code, n, X86_ALL_EVENT_FLAGS)
/* Check flags and event code, and set the HSW store flag */
#define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_ST(code, n) \
__EVENT_CONSTRAINT(code, n, \
ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
/* Check flags and event code, and set the HSW load flag */
#define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD(code, n) \
__EVENT_CONSTRAINT(code, n, \
ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
#define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD_RANGE(code, end, n) \
__EVENT_CONSTRAINT_RANGE(code, end, n, \
ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
#define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_XLD(code, n) \
__EVENT_CONSTRAINT(code, n, \
ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, \
PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
/* Check flags and event code/umask, and set the HSW store flag */
#define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(code, n) \
__EVENT_CONSTRAINT(code, n, \
INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
#define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XST(code, n) \
__EVENT_CONSTRAINT(code, n, \
INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, \
PERF_X86_EVENT_PEBS_ST_HSW|PERF_X86_EVENT_EXCL)
/* Check flags and event code/umask, and set the HSW load flag */
#define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(code, n) \
__EVENT_CONSTRAINT(code, n, \
INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
#define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(code, n) \
__EVENT_CONSTRAINT(code, n, \
INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, \
PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
/* Check flags and event code/umask, and set the HSW N/A flag */
#define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(code, n) \
__EVENT_CONSTRAINT(code, n, \
INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_NA_HSW)
/*
* We define the end marker as having a weight of -1
* to enable blacklisting of events using a counter bitmask
* of zero and thus a weight of zero.
* The end marker has a weight that cannot possibly be
* obtained from counting the bits in the bitmask.
*/
#define EVENT_CONSTRAINT_END { .weight = -1 }
/*
* Check for end marker with weight == -1
*/
#define for_each_event_constraint(e, c) \
for ((e) = (c); (e)->weight != -1; (e)++)
/*
* Extra registers for specific events.
*
* Some events need large masks and require external MSRs.
* Those extra MSRs end up being shared for all events on
* a PMU and sometimes between PMU of sibling HT threads.
* In either case, the kernel needs to handle conflicting
* accesses to those extra, shared, regs. The data structure
* to manage those registers is stored in cpu_hw_event.
*/
struct extra_reg {
unsigned int event;
unsigned int msr;
u64 config_mask;
u64 valid_mask;
int idx; /* per_xxx->regs[] reg index */
bool extra_msr_access;
};
#define EVENT_EXTRA_REG(e, ms, m, vm, i) { \
.event = (e), \
.msr = (ms), \
.config_mask = (m), \
.valid_mask = (vm), \
.idx = EXTRA_REG_##i, \
.extra_msr_access = true, \
}
#define INTEL_EVENT_EXTRA_REG(event, msr, vm, idx) \
EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT, vm, idx)
#define INTEL_UEVENT_EXTRA_REG(event, msr, vm, idx) \
EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT | \
ARCH_PERFMON_EVENTSEL_UMASK, vm, idx)
#define INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(c) \
INTEL_UEVENT_EXTRA_REG(c, \
MSR_PEBS_LD_LAT_THRESHOLD, \
0xffff, \
LDLAT)
#define EVENT_EXTRA_END EVENT_EXTRA_REG(0, 0, 0, 0, RSP_0)
union perf_capabilities {
struct {
u64 lbr_format:6;
u64 pebs_trap:1;
u64 pebs_arch_reg:1;
u64 pebs_format:4;
u64 smm_freeze:1;
/*
* PMU supports separate counter range for writing
* values > 32bit.
*/
u64 full_width_write:1;
u64 pebs_baseline:1;
u64 perf_metrics:1;
u64 pebs_output_pt_available:1;
u64 anythread_deprecated:1;
};
u64 capabilities;
};
struct x86_pmu_quirk {
struct x86_pmu_quirk *next;
void (*func)(void);
};
union x86_pmu_config {
struct {
u64 event:8,
umask:8,
usr:1,
os:1,
edge:1,
pc:1,
interrupt:1,
__reserved1:1,
en:1,
inv:1,
cmask:8,
event2:4,
__reserved2:4,
go:1,
ho:1;
} bits;
u64 value;
};
#define X86_CONFIG(args...) ((union x86_pmu_config){.bits = {args}}).value
enum {
x86_lbr_exclusive_lbr,
x86_lbr_exclusive_bts,
x86_lbr_exclusive_pt,
x86_lbr_exclusive_max,
};
#define PERF_PEBS_DATA_SOURCE_MAX 0x10
struct x86_hybrid_pmu {
struct pmu pmu;
const char *name;
u8 cpu_type;
cpumask_t supported_cpus;
union perf_capabilities intel_cap;
u64 intel_ctrl;
int max_pebs_events;
int num_counters;
int num_counters_fixed;
struct event_constraint unconstrained;
u64 hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
u64 hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
struct event_constraint *event_constraints;
struct event_constraint *pebs_constraints;
struct extra_reg *extra_regs;
unsigned int late_ack :1,
mid_ack :1,
enabled_ack :1;
u64 pebs_data_source[PERF_PEBS_DATA_SOURCE_MAX];
};
static __always_inline struct x86_hybrid_pmu *hybrid_pmu(struct pmu *pmu)
{
return container_of(pmu, struct x86_hybrid_pmu, pmu);
}
extern struct static_key_false perf_is_hybrid;
#define is_hybrid() static_branch_unlikely(&perf_is_hybrid)
#define hybrid(_pmu, _field) \
(*({ \
typeof(&x86_pmu._field) __Fp = &x86_pmu._field; \
\
if (is_hybrid() && (_pmu)) \
__Fp = &hybrid_pmu(_pmu)->_field; \
\
__Fp; \
}))
#define hybrid_var(_pmu, _var) \
(*({ \
typeof(&_var) __Fp = &_var; \
\
if (is_hybrid() && (_pmu)) \
__Fp = &hybrid_pmu(_pmu)->_var; \
\
__Fp; \
}))
#define hybrid_bit(_pmu, _field) \
({ \
bool __Fp = x86_pmu._field; \
\
if (is_hybrid() && (_pmu)) \
__Fp = hybrid_pmu(_pmu)->_field; \
\
__Fp; \
})
enum hybrid_pmu_type {
hybrid_big = 0x40,
hybrid_small = 0x20,
hybrid_big_small = hybrid_big | hybrid_small,
};
#define X86_HYBRID_PMU_ATOM_IDX 0
#define X86_HYBRID_PMU_CORE_IDX 1
#define X86_HYBRID_NUM_PMUS 2
/*
* struct x86_pmu - generic x86 pmu
*/
struct x86_pmu {
/*
* Generic x86 PMC bits
*/
const char *name;
int version;
int (*handle_irq)(struct pt_regs *);
void (*disable_all)(void);
void (*enable_all)(int added);
void (*enable)(struct perf_event *);
void (*disable)(struct perf_event *);
void (*assign)(struct perf_event *event, int idx);
void (*add)(struct perf_event *);
void (*del)(struct perf_event *);
void (*read)(struct perf_event *event);
int (*set_period)(struct perf_event *event);
u64 (*update)(struct perf_event *event);
int (*hw_config)(struct perf_event *event);
int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
unsigned eventsel;
unsigned perfctr;
int (*addr_offset)(int index, bool eventsel);
int (*rdpmc_index)(int index);
u64 (*event_map)(int);
int max_events;
int num_counters;
int num_counters_fixed;
int cntval_bits;
u64 cntval_mask;
union {
unsigned long events_maskl;
unsigned long events_mask[BITS_TO_LONGS(ARCH_PERFMON_EVENTS_COUNT)];
};
int events_mask_len;
int apic;
u64 max_period;
struct event_constraint *
(*get_event_constraints)(struct cpu_hw_events *cpuc,
int idx,
struct perf_event *event);
void (*put_event_constraints)(struct cpu_hw_events *cpuc,
struct perf_event *event);
void (*start_scheduling)(struct cpu_hw_events *cpuc);
void (*commit_scheduling)(struct cpu_hw_events *cpuc, int idx, int cntr);
void (*stop_scheduling)(struct cpu_hw_events *cpuc);
struct event_constraint *event_constraints;
struct x86_pmu_quirk *quirks;
void (*limit_period)(struct perf_event *event, s64 *l);
/* PMI handler bits */
unsigned int late_ack :1,
mid_ack :1,
enabled_ack :1;
/*
* sysfs attrs
*/
int attr_rdpmc_broken;
int attr_rdpmc;
struct attribute **format_attrs;
ssize_t (*events_sysfs_show)(char *page, u64 config);
const struct attribute_group **attr_update;
unsigned long attr_freeze_on_smi;
/*
* CPU Hotplug hooks
*/
int (*cpu_prepare)(int cpu);
void (*cpu_starting)(int cpu);
void (*cpu_dying)(int cpu);
void (*cpu_dead)(int cpu);
void (*check_microcode)(void);
void (*sched_task)(struct perf_event_context *ctx,
bool sched_in);
/*
* Intel Arch Perfmon v2+
*/
u64 intel_ctrl;
union perf_capabilities intel_cap;
/*
* Intel DebugStore bits
*/
unsigned int bts :1,
bts_active :1,
pebs :1,
pebs_active :1,
pebs_broken :1,
pebs_prec_dist :1,
pebs_no_tlb :1,
pebs_no_isolation :1,
pebs_block :1,
pebs_ept :1;
int pebs_record_size;
int pebs_buffer_size;
int max_pebs_events;
void (*drain_pebs)(struct pt_regs *regs, struct perf_sample_data *data);
struct event_constraint *pebs_constraints;
void (*pebs_aliases)(struct perf_event *event);
u64 (*pebs_latency_data)(struct perf_event *event, u64 status);
unsigned long large_pebs_flags;
u64 rtm_abort_event;
u64 pebs_capable;
/*
* Intel LBR
*/
unsigned int lbr_tos, lbr_from, lbr_to,
lbr_info, lbr_nr; /* LBR base regs and size */
union {
u64 lbr_sel_mask; /* LBR_SELECT valid bits */
u64 lbr_ctl_mask; /* LBR_CTL valid bits */
};
union {
const int *lbr_sel_map; /* lbr_select mappings */
int *lbr_ctl_map; /* LBR_CTL mappings */
};
bool lbr_double_abort; /* duplicated lbr aborts */
bool lbr_pt_coexist; /* (LBR|BTS) may coexist with PT */
unsigned int lbr_has_info:1;
unsigned int lbr_has_tsx:1;
unsigned int lbr_from_flags:1;
unsigned int lbr_to_cycles:1;
/*
* Intel Architectural LBR CPUID Enumeration
*/
unsigned int lbr_depth_mask:8;
unsigned int lbr_deep_c_reset:1;
unsigned int lbr_lip:1;
unsigned int lbr_cpl:1;
unsigned int lbr_filter:1;
unsigned int lbr_call_stack:1;
unsigned int lbr_mispred:1;
unsigned int lbr_timed_lbr:1;
unsigned int lbr_br_type:1;
void (*lbr_reset)(void);
void (*lbr_read)(struct cpu_hw_events *cpuc);
void (*lbr_save)(void *ctx);
void (*lbr_restore)(void *ctx);
/*
* Intel PT/LBR/BTS are exclusive
*/
atomic_t lbr_exclusive[x86_lbr_exclusive_max];
/*
* Intel perf metrics
*/
int num_topdown_events;
/*
* perf task context (i.e. struct perf_event_context::task_ctx_data)
* switch helper to bridge calls from perf/core to perf/x86.
* See struct pmu::swap_task_ctx() usage for examples;
*/
void (*swap_task_ctx)(struct perf_event_context *prev,
struct perf_event_context *next);
/*
* AMD bits
*/
unsigned int amd_nb_constraints : 1;
u64 perf_ctr_pair_en;
/*
* Extra registers for events
*/
struct extra_reg *extra_regs;
unsigned int flags;
/*
* Intel host/guest support (KVM)
*/
struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr, void *data);
/*
* Check period value for PERF_EVENT_IOC_PERIOD ioctl.
*/
int (*check_period) (struct perf_event *event, u64 period);
int (*aux_output_match) (struct perf_event *event);
int (*filter_match)(struct perf_event *event);
/*
* Hybrid support
*
* Most PMU capabilities are the same among different hybrid PMUs.
* The global x86_pmu saves the architecture capabilities, which
* are available for all PMUs. The hybrid_pmu only includes the
* unique capabilities.
*/
int num_hybrid_pmus;
struct x86_hybrid_pmu *hybrid_pmu;
u8 (*get_hybrid_cpu_type) (void);
};
struct x86_perf_task_context_opt {
int lbr_callstack_users;
int lbr_stack_state;
int log_id;
};
struct x86_perf_task_context {
u64 lbr_sel;
int tos;
int valid_lbrs;
struct x86_perf_task_context_opt opt;
struct lbr_entry lbr[MAX_LBR_ENTRIES];
};
struct x86_perf_task_context_arch_lbr {
struct x86_perf_task_context_opt opt;
struct lbr_entry entries[];
};
/*
* Add padding to guarantee the 64-byte alignment of the state buffer.
*
* The structure is dynamically allocated. The size of the LBR state may vary
* based on the number of LBR registers.
*
* Do not put anything after the LBR state.
*/
struct x86_perf_task_context_arch_lbr_xsave {
struct x86_perf_task_context_opt opt;
union {
struct xregs_state xsave;
struct {
struct fxregs_state i387;
struct xstate_header header;
struct arch_lbr_state lbr;
} __attribute__ ((packed, aligned (XSAVE_ALIGNMENT)));
};
};
#define x86_add_quirk(func_) \
do { \
static struct x86_pmu_quirk __quirk __initdata = { \
.func = func_, \
}; \
__quirk.next = x86_pmu.quirks; \
x86_pmu.quirks = &__quirk; \
} while (0)
/*
* x86_pmu flags
*/
#define PMU_FL_NO_HT_SHARING 0x1 /* no hyper-threading resource sharing */
#define PMU_FL_HAS_RSP_1 0x2 /* has 2 equivalent offcore_rsp regs */
#define PMU_FL_EXCL_CNTRS 0x4 /* has exclusive counter requirements */
#define PMU_FL_EXCL_ENABLED 0x8 /* exclusive counter active */
#define PMU_FL_PEBS_ALL 0x10 /* all events are valid PEBS events */
#define PMU_FL_TFA 0x20 /* deal with TSX force abort */
#define PMU_FL_PAIR 0x40 /* merge counters for large incr. events */
#define PMU_FL_INSTR_LATENCY 0x80 /* Support Instruction Latency in PEBS Memory Info Record */
#define PMU_FL_MEM_LOADS_AUX 0x100 /* Require an auxiliary event for the complete memory info */
#define EVENT_VAR(_id) event_attr_##_id
#define EVENT_PTR(_id) &event_attr_##_id.attr.attr
#define EVENT_ATTR(_name, _id) \
static struct perf_pmu_events_attr EVENT_VAR(_id) = { \
.attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
.id = PERF_COUNT_HW_##_id, \
.event_str = NULL, \
};
#define EVENT_ATTR_STR(_name, v, str) \
static struct perf_pmu_events_attr event_attr_##v = { \
.attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
.id = 0, \
.event_str = str, \
};
#define EVENT_ATTR_STR_HT(_name, v, noht, ht) \
static struct perf_pmu_events_ht_attr event_attr_##v = { \
.attr = __ATTR(_name, 0444, events_ht_sysfs_show, NULL),\
.id = 0, \
.event_str_noht = noht, \
.event_str_ht = ht, \
}
#define EVENT_ATTR_STR_HYBRID(_name, v, str, _pmu) \
static struct perf_pmu_events_hybrid_attr event_attr_##v = { \
.attr = __ATTR(_name, 0444, events_hybrid_sysfs_show, NULL),\
.id = 0, \
.event_str = str, \
.pmu_type = _pmu, \
}
#define FORMAT_HYBRID_PTR(_id) (&format_attr_hybrid_##_id.attr.attr)
#define FORMAT_ATTR_HYBRID(_name, _pmu) \
static struct perf_pmu_format_hybrid_attr format_attr_hybrid_##_name = {\
.attr = __ATTR_RO(_name), \
.pmu_type = _pmu, \
}
struct pmu *x86_get_pmu(unsigned int cpu);
extern struct x86_pmu x86_pmu __read_mostly;
DECLARE_STATIC_CALL(x86_pmu_set_period, *x86_pmu.set_period);
DECLARE_STATIC_CALL(x86_pmu_update, *x86_pmu.update);
static __always_inline struct x86_perf_task_context_opt *task_context_opt(void *ctx)
{
if (static_cpu_has(X86_FEATURE_ARCH_LBR))
return &((struct x86_perf_task_context_arch_lbr *)ctx)->opt;
return &((struct x86_perf_task_context *)ctx)->opt;
}
static inline bool x86_pmu_has_lbr_callstack(void)
{
return x86_pmu.lbr_sel_map &&
x86_pmu.lbr_sel_map[PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT] > 0;
}
DECLARE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
DECLARE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left);
int x86_perf_event_set_period(struct perf_event *event);
/*
* Generalized hw caching related hw_event table, filled
* in on a per model basis. A value of 0 means
* 'not supported', -1 means 'hw_event makes no sense on
* this CPU', any other value means the raw hw_event
* ID.
*/
#define C(x) PERF_COUNT_HW_CACHE_##x
extern u64 __read_mostly hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
extern u64 __read_mostly hw_cache_extra_regs
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX];
u64 x86_perf_event_update(struct perf_event *event);
static inline unsigned int x86_pmu_config_addr(int index)
{
return x86_pmu.eventsel + (x86_pmu.addr_offset ?
x86_pmu.addr_offset(index, true) : index);
}
static inline unsigned int x86_pmu_event_addr(int index)
{
return x86_pmu.perfctr + (x86_pmu.addr_offset ?
x86_pmu.addr_offset(index, false) : index);
}
static inline int x86_pmu_rdpmc_index(int index)
{
return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index;
}
bool check_hw_exists(struct pmu *pmu, int num_counters,
int num_counters_fixed);
int x86_add_exclusive(unsigned int what);
void x86_del_exclusive(unsigned int what);
int x86_reserve_hardware(void);
void x86_release_hardware(void);
int x86_pmu_max_precise(void);
void hw_perf_lbr_event_destroy(struct perf_event *event);
int x86_setup_perfctr(struct perf_event *event);
int x86_pmu_hw_config(struct perf_event *event);
void x86_pmu_disable_all(void);
static inline bool has_amd_brs(struct hw_perf_event *hwc)
{
return hwc->flags & PERF_X86_EVENT_AMD_BRS;
}
static inline bool is_counter_pair(struct hw_perf_event *hwc)
{
return hwc->flags & PERF_X86_EVENT_PAIR;
}
static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
u64 enable_mask)
{
u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
if (hwc->extra_reg.reg)
wrmsrl(hwc->extra_reg.reg, hwc->extra_reg.config);
/*
* Add enabled Merge event on next counter
* if large increment event being enabled on this counter
*/
if (is_counter_pair(hwc))
wrmsrl(x86_pmu_config_addr(hwc->idx + 1), x86_pmu.perf_ctr_pair_en);
wrmsrl(hwc->config_base, (hwc->config | enable_mask) & ~disable_mask);
}
void x86_pmu_enable_all(int added);
int perf_assign_events(struct event_constraint **constraints, int n,
int wmin, int wmax, int gpmax, int *assign);
int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign);
void x86_pmu_stop(struct perf_event *event, int flags);
static inline void x86_pmu_disable_event(struct perf_event *event)
{
u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
struct hw_perf_event *hwc = &event->hw;
wrmsrl(hwc->config_base, hwc->config & ~disable_mask);
if (is_counter_pair(hwc))
wrmsrl(x86_pmu_config_addr(hwc->idx + 1), 0);
}
void x86_pmu_enable_event(struct perf_event *event);
int x86_pmu_handle_irq(struct pt_regs *regs);
void x86_pmu_show_pmu_cap(int num_counters, int num_counters_fixed,
u64 intel_ctrl);
void x86_pmu_update_cpu_context(struct pmu *pmu, int cpu);
extern struct event_constraint emptyconstraint;
extern struct event_constraint unconstrained;
static inline bool kernel_ip(unsigned long ip)
{
#ifdef CONFIG_X86_32
return ip > PAGE_OFFSET;
#else
return (long)ip < 0;
#endif
}
/*
* Not all PMUs provide the right context information to place the reported IP
* into full context. Specifically segment registers are typically not
* supplied.
*
* Assuming the address is a linear address (it is for IBS), we fake the CS and
* vm86 mode using the known zero-based code segment and 'fix up' the registers
* to reflect this.
*
* Intel PEBS/LBR appear to typically provide the effective address, nothing
* much we can do about that but pray and treat it like a linear address.
*/
static inline void set_linear_ip(struct pt_regs *regs, unsigned long ip)
{
regs->cs = kernel_ip(ip) ? __KERNEL_CS : __USER_CS;
if (regs->flags & X86_VM_MASK)
regs->flags ^= (PERF_EFLAGS_VM | X86_VM_MASK);
regs->ip = ip;
}
/*
* x86control flow change classification
* x86control flow changes include branches, interrupts, traps, faults
*/
enum {
X86_BR_NONE = 0, /* unknown */
X86_BR_USER = 1 << 0, /* branch target is user */
X86_BR_KERNEL = 1 << 1, /* branch target is kernel */
X86_BR_CALL = 1 << 2, /* call */
X86_BR_RET = 1 << 3, /* return */
X86_BR_SYSCALL = 1 << 4, /* syscall */
X86_BR_SYSRET = 1 << 5, /* syscall return */
X86_BR_INT = 1 << 6, /* sw interrupt */
X86_BR_IRET = 1 << 7, /* return from interrupt */
X86_BR_JCC = 1 << 8, /* conditional */
X86_BR_JMP = 1 << 9, /* jump */
X86_BR_IRQ = 1 << 10,/* hw interrupt or trap or fault */
X86_BR_IND_CALL = 1 << 11,/* indirect calls */
X86_BR_ABORT = 1 << 12,/* transaction abort */
X86_BR_IN_TX = 1 << 13,/* in transaction */
X86_BR_NO_TX = 1 << 14,/* not in transaction */
X86_BR_ZERO_CALL = 1 << 15,/* zero length call */
X86_BR_CALL_STACK = 1 << 16,/* call stack */
X86_BR_IND_JMP = 1 << 17,/* indirect jump */
X86_BR_TYPE_SAVE = 1 << 18,/* indicate to save branch type */
};
#define X86_BR_PLM (X86_BR_USER | X86_BR_KERNEL)
#define X86_BR_ANYTX (X86_BR_NO_TX | X86_BR_IN_TX)
#define X86_BR_ANY \
(X86_BR_CALL |\
X86_BR_RET |\
X86_BR_SYSCALL |\
X86_BR_SYSRET |\
X86_BR_INT |\
X86_BR_IRET |\
X86_BR_JCC |\
X86_BR_JMP |\
X86_BR_IRQ |\
X86_BR_ABORT |\
X86_BR_IND_CALL |\
X86_BR_IND_JMP |\
X86_BR_ZERO_CALL)
#define X86_BR_ALL (X86_BR_PLM | X86_BR_ANY)
#define X86_BR_ANY_CALL \
(X86_BR_CALL |\
X86_BR_IND_CALL |\
X86_BR_ZERO_CALL |\
X86_BR_SYSCALL |\
X86_BR_IRQ |\
X86_BR_INT)
int common_branch_type(int type);
int branch_type(unsigned long from, unsigned long to, int abort);
int branch_type_fused(unsigned long from, unsigned long to, int abort,
int *offset);
ssize_t x86_event_sysfs_show(char *page, u64 config, u64 event);
ssize_t intel_event_sysfs_show(char *page, u64 config);
ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr,
char *page);
ssize_t events_ht_sysfs_show(struct device *dev, struct device_attribute *attr,
char *page);
ssize_t events_hybrid_sysfs_show(struct device *dev,
struct device_attribute *attr,
char *page);
static inline bool fixed_counter_disabled(int i, struct pmu *pmu)
{
u64 intel_ctrl = hybrid(pmu, intel_ctrl);
return !(intel_ctrl >> (i + INTEL_PMC_IDX_FIXED));
}
#ifdef CONFIG_CPU_SUP_AMD
int amd_pmu_init(void);
int amd_pmu_lbr_init(void);
void amd_pmu_lbr_reset(void);
void amd_pmu_lbr_read(void);
void amd_pmu_lbr_add(struct perf_event *event);
void amd_pmu_lbr_del(struct perf_event *event);
void amd_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in);
void amd_pmu_lbr_enable_all(void);
void amd_pmu_lbr_disable_all(void);
int amd_pmu_lbr_hw_config(struct perf_event *event);
#ifdef CONFIG_PERF_EVENTS_AMD_BRS
#define AMD_FAM19H_BRS_EVENT 0xc4 /* RETIRED_TAKEN_BRANCH_INSTRUCTIONS */
int amd_brs_init(void);
void amd_brs_disable(void);
void amd_brs_enable(void);
void amd_brs_enable_all(void);
void amd_brs_disable_all(void);
void amd_brs_drain(void);
void amd_brs_lopwr_init(void);
void amd_brs_disable_all(void);
int amd_brs_hw_config(struct perf_event *event);
void amd_brs_reset(void);
static inline void amd_pmu_brs_add(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
perf_sched_cb_inc(event->ctx->pmu);
cpuc->lbr_users++;
/*
* No need to reset BRS because it is reset
* on brs_enable() and it is saturating
*/
}
static inline void amd_pmu_brs_del(struct perf_event *event)
{
struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
cpuc->lbr_users--;
WARN_ON_ONCE(cpuc->lbr_users < 0);
perf_sched_cb_dec(event->ctx->pmu);
}
void amd_pmu_brs_sched_task(struct perf_event_context *ctx, bool sched_in);
#else
static inline int amd_brs_init(void)
{
return 0;
}
static inline void amd_brs_disable(void) {}
static inline void amd_brs_enable(void) {}
static inline void amd_brs_drain(void) {}
static inline void amd_brs_lopwr_init(void) {}
static inline void amd_brs_disable_all(void) {}
static inline int amd_brs_hw_config(struct perf_event *event)
{
return 0;
}
static inline void amd_brs_reset(void) {}
static inline void amd_pmu_brs_add(struct perf_event *event)
{
}
static inline void amd_pmu_brs_del(struct perf_event *event)
{
}
static inline void amd_pmu_brs_sched_task(struct perf_event_context *ctx, bool sched_in)
{
}
static inline void amd_brs_enable_all(void)
{
}
#endif
#else /* CONFIG_CPU_SUP_AMD */
static inline int amd_pmu_init(void)
{
return 0;
}
static inline int amd_brs_init(void)
{
return -EOPNOTSUPP;
}
static inline void amd_brs_drain(void)
{
}
static inline void amd_brs_enable_all(void)
{
}
static inline void amd_brs_disable_all(void)
{
}
#endif /* CONFIG_CPU_SUP_AMD */
static inline int is_pebs_pt(struct perf_event *event)
{
return !!(event->hw.flags & PERF_X86_EVENT_PEBS_VIA_PT);
}
#ifdef CONFIG_CPU_SUP_INTEL
static inline bool intel_pmu_has_bts_period(struct perf_event *event, u64 period)
{
struct hw_perf_event *hwc = &event->hw;
unsigned int hw_event, bts_event;
if (event->attr.freq)
return false;
hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
return hw_event == bts_event && period == 1;
}
static inline bool intel_pmu_has_bts(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
return intel_pmu_has_bts_period(event, hwc->sample_period);
}
static __always_inline void __intel_pmu_pebs_disable_all(void)
{
wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
}
static __always_inline void __intel_pmu_arch_lbr_disable(void)
{
wrmsrl(MSR_ARCH_LBR_CTL, 0);
}
static __always_inline void __intel_pmu_lbr_disable(void)
{
u64 debugctl;
rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctl);
debugctl &= ~(DEBUGCTLMSR_LBR | DEBUGCTLMSR_FREEZE_LBRS_ON_PMI);
wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctl);
}
int intel_pmu_save_and_restart(struct perf_event *event);
struct event_constraint *
x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
struct perf_event *event);
extern int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu);
extern void intel_cpuc_finish(struct cpu_hw_events *cpuc);
int intel_pmu_init(void);
void init_debug_store_on_cpu(int cpu);
void fini_debug_store_on_cpu(int cpu);
void release_ds_buffers(void);
void reserve_ds_buffers(void);
void release_lbr_buffers(void);
void reserve_lbr_buffers(void);
extern struct event_constraint bts_constraint;
extern struct event_constraint vlbr_constraint;
void intel_pmu_enable_bts(u64 config);
void intel_pmu_disable_bts(void);
int intel_pmu_drain_bts_buffer(void);
u64 adl_latency_data_small(struct perf_event *event, u64 status);
extern struct event_constraint intel_core2_pebs_event_constraints[];
extern struct event_constraint intel_atom_pebs_event_constraints[];
extern struct event_constraint intel_slm_pebs_event_constraints[];
extern struct event_constraint intel_glm_pebs_event_constraints[];
extern struct event_constraint intel_glp_pebs_event_constraints[];
extern struct event_constraint intel_grt_pebs_event_constraints[];
extern struct event_constraint intel_nehalem_pebs_event_constraints[];
extern struct event_constraint intel_westmere_pebs_event_constraints[];
extern struct event_constraint intel_snb_pebs_event_constraints[];
extern struct event_constraint intel_ivb_pebs_event_constraints[];
extern struct event_constraint intel_hsw_pebs_event_constraints[];
extern struct event_constraint intel_bdw_pebs_event_constraints[];
extern struct event_constraint intel_skl_pebs_event_constraints[];
extern struct event_constraint intel_icl_pebs_event_constraints[];
extern struct event_constraint intel_spr_pebs_event_constraints[];
struct event_constraint *intel_pebs_constraints(struct perf_event *event);
void intel_pmu_pebs_add(struct perf_event *event);
void intel_pmu_pebs_del(struct perf_event *event);
void intel_pmu_pebs_enable(struct perf_event *event);
void intel_pmu_pebs_disable(struct perf_event *event);
void intel_pmu_pebs_enable_all(void);
void intel_pmu_pebs_disable_all(void);
void intel_pmu_pebs_sched_task(struct perf_event_context *ctx, bool sched_in);
void intel_pmu_auto_reload_read(struct perf_event *event);
void intel_pmu_store_pebs_lbrs(struct lbr_entry *lbr);
void intel_ds_init(void);
void intel_pmu_lbr_swap_task_ctx(struct perf_event_context *prev,
struct perf_event_context *next);
void intel_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in);
u64 lbr_from_signext_quirk_wr(u64 val);
void intel_pmu_lbr_reset(void);
void intel_pmu_lbr_reset_32(void);
void intel_pmu_lbr_reset_64(void);
void intel_pmu_lbr_add(struct perf_event *event);
void intel_pmu_lbr_del(struct perf_event *event);
void intel_pmu_lbr_enable_all(bool pmi);
void intel_pmu_lbr_disable_all(void);
void intel_pmu_lbr_read(void);
void intel_pmu_lbr_read_32(struct cpu_hw_events *cpuc);
void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc);
void intel_pmu_lbr_save(void *ctx);
void intel_pmu_lbr_restore(void *ctx);
void intel_pmu_lbr_init_core(void);
void intel_pmu_lbr_init_nhm(void);
void intel_pmu_lbr_init_atom(void);
void intel_pmu_lbr_init_slm(void);
void intel_pmu_lbr_init_snb(void);
void intel_pmu_lbr_init_hsw(void);
void intel_pmu_lbr_init_skl(void);
void intel_pmu_lbr_init_knl(void);
void intel_pmu_lbr_init(void);
void intel_pmu_arch_lbr_init(void);
void intel_pmu_pebs_data_source_nhm(void);
void intel_pmu_pebs_data_source_skl(bool pmem);
void intel_pmu_pebs_data_source_adl(void);
void intel_pmu_pebs_data_source_grt(void);
int intel_pmu_setup_lbr_filter(struct perf_event *event);
void intel_pt_interrupt(void);
int intel_bts_interrupt(void);
void intel_bts_enable_local(void);
void intel_bts_disable_local(void);
int p4_pmu_init(void);
int p6_pmu_init(void);
int knc_pmu_init(void);
static inline int is_ht_workaround_enabled(void)
{
return !!(x86_pmu.flags & PMU_FL_EXCL_ENABLED);
}
#else /* CONFIG_CPU_SUP_INTEL */
static inline void reserve_ds_buffers(void)
{
}
static inline void release_ds_buffers(void)
{
}
static inline void release_lbr_buffers(void)
{
}
static inline void reserve_lbr_buffers(void)
{
}
static inline int intel_pmu_init(void)
{
return 0;
}
static inline int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
{
return 0;
}
static inline void intel_cpuc_finish(struct cpu_hw_events *cpuc)
{
}
static inline int is_ht_workaround_enabled(void)
{
return 0;
}
#endif /* CONFIG_CPU_SUP_INTEL */
#if ((defined CONFIG_CPU_SUP_CENTAUR) || (defined CONFIG_CPU_SUP_ZHAOXIN))
int zhaoxin_pmu_init(void);
#else
static inline int zhaoxin_pmu_init(void)
{
return 0;
}
#endif /*CONFIG_CPU_SUP_CENTAUR or CONFIG_CPU_SUP_ZHAOXIN*/