2 * Performance events x86 architecture header
4 * Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
5 * Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar
6 * Copyright (C) 2009 Jaswinder Singh Rajput
7 * Copyright (C) 2009 Advanced Micro Devices, Inc., Robert Richter
8 * Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra
9 * Copyright (C) 2009 Intel Corporation, <markus.t.metzger@intel.com>
10 * Copyright (C) 2009 Google, Inc., Stephane Eranian
12 * For licencing details see kernel-base/COPYING
15 #include <linux/perf_event.h>
17 #include <asm/intel_ds.h>
19 /* To enable MSR tracing please use the generic trace points. */
23 * register -------------------------------
24 * | HT | no HT | HT | no HT |
25 *-----------------------------------------
26 * offcore | core | core | cpu | core |
27 * lbr_sel | core | core | cpu | core |
28 * ld_lat | cpu | core | cpu | core |
29 *-----------------------------------------
31 * Given that there is a small number of shared regs,
32 * we can pre-allocate their slot in the per-cpu
33 * per-core reg tables.
36 EXTRA_REG_NONE = -1, /* not used */
38 EXTRA_REG_RSP_0 = 0, /* offcore_response_0 */
39 EXTRA_REG_RSP_1 = 1, /* offcore_response_1 */
40 EXTRA_REG_LBR = 2, /* lbr_select */
41 EXTRA_REG_LDLAT = 3, /* ld_lat_threshold */
42 EXTRA_REG_FE = 4, /* fe_* */
44 EXTRA_REG_MAX /* number of entries needed */
47 struct event_constraint {
49 unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
60 static inline bool constraint_match(struct event_constraint *c, u64 ecode)
62 return ((ecode & c->cmask) - c->code) <= (u64)c->size;
66 * struct hw_perf_event.flags flags
68 #define PERF_X86_EVENT_PEBS_LDLAT 0x0001 /* ld+ldlat data address sampling */
69 #define PERF_X86_EVENT_PEBS_ST 0x0002 /* st data address sampling */
70 #define PERF_X86_EVENT_PEBS_ST_HSW 0x0004 /* haswell style datala, store */
71 #define PERF_X86_EVENT_PEBS_LD_HSW 0x0008 /* haswell style datala, load */
72 #define PERF_X86_EVENT_PEBS_NA_HSW 0x0010 /* haswell style datala, unknown */
73 #define PERF_X86_EVENT_EXCL 0x0020 /* HT exclusivity on counter */
74 #define PERF_X86_EVENT_DYNAMIC 0x0040 /* dynamic alloc'd constraint */
75 #define PERF_X86_EVENT_RDPMC_ALLOWED 0x0080 /* grant rdpmc permission */
76 #define PERF_X86_EVENT_EXCL_ACCT 0x0100 /* accounted EXCL event */
77 #define PERF_X86_EVENT_AUTO_RELOAD 0x0200 /* use PEBS auto-reload */
78 #define PERF_X86_EVENT_LARGE_PEBS 0x0400 /* use large PEBS */
81 int nb_id; /* NorthBridge id */
82 int refcnt; /* reference count */
83 struct perf_event *owners[X86_PMC_IDX_MAX];
84 struct event_constraint event_constraints[X86_PMC_IDX_MAX];
87 #define PEBS_COUNTER_MASK ((1ULL << MAX_PEBS_EVENTS) - 1)
90 * Flags PEBS can handle without an PMI.
92 * TID can only be handled by flushing at context switch.
93 * REGS_USER can be handled for events limited to ring 3.
96 #define LARGE_PEBS_FLAGS \
97 (PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \
98 PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
99 PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
100 PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
101 PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \
104 #define PEBS_GP_REGS \
105 ((1ULL << PERF_REG_X86_AX) | \
106 (1ULL << PERF_REG_X86_BX) | \
107 (1ULL << PERF_REG_X86_CX) | \
108 (1ULL << PERF_REG_X86_DX) | \
109 (1ULL << PERF_REG_X86_DI) | \
110 (1ULL << PERF_REG_X86_SI) | \
111 (1ULL << PERF_REG_X86_SP) | \
112 (1ULL << PERF_REG_X86_BP) | \
113 (1ULL << PERF_REG_X86_IP) | \
114 (1ULL << PERF_REG_X86_FLAGS) | \
115 (1ULL << PERF_REG_X86_R8) | \
116 (1ULL << PERF_REG_X86_R9) | \
117 (1ULL << PERF_REG_X86_R10) | \
118 (1ULL << PERF_REG_X86_R11) | \
119 (1ULL << PERF_REG_X86_R12) | \
120 (1ULL << PERF_REG_X86_R13) | \
121 (1ULL << PERF_REG_X86_R14) | \
122 (1ULL << PERF_REG_X86_R15))
124 #define PEBS_XMM_REGS \
125 ((1ULL << PERF_REG_X86_XMM0) | \
126 (1ULL << PERF_REG_X86_XMM1) | \
127 (1ULL << PERF_REG_X86_XMM2) | \
128 (1ULL << PERF_REG_X86_XMM3) | \
129 (1ULL << PERF_REG_X86_XMM4) | \
130 (1ULL << PERF_REG_X86_XMM5) | \
131 (1ULL << PERF_REG_X86_XMM6) | \
132 (1ULL << PERF_REG_X86_XMM7) | \
133 (1ULL << PERF_REG_X86_XMM8) | \
134 (1ULL << PERF_REG_X86_XMM9) | \
135 (1ULL << PERF_REG_X86_XMM10) | \
136 (1ULL << PERF_REG_X86_XMM11) | \
137 (1ULL << PERF_REG_X86_XMM12) | \
138 (1ULL << PERF_REG_X86_XMM13) | \
139 (1ULL << PERF_REG_X86_XMM14) | \
140 (1ULL << PERF_REG_X86_XMM15))
143 * Per register state.
146 raw_spinlock_t lock; /* per-core: protect structure */
147 u64 config; /* extra MSR config */
148 u64 reg; /* extra MSR number */
149 atomic_t ref; /* reference count */
155 * Used to coordinate shared registers between HT threads or
156 * among events on a single PMU.
158 struct intel_shared_regs {
159 struct er_account regs[EXTRA_REG_MAX];
160 int refcnt; /* per-core: #HT threads */
161 unsigned core_id; /* per-core: core id */
164 enum intel_excl_state_type {
165 INTEL_EXCL_UNUSED = 0, /* counter is unused */
166 INTEL_EXCL_SHARED = 1, /* counter can be used by both threads */
167 INTEL_EXCL_EXCLUSIVE = 2, /* counter can be used by one thread only */
170 struct intel_excl_states {
171 enum intel_excl_state_type state[X86_PMC_IDX_MAX];
172 bool sched_started; /* true if scheduling has started */
175 struct intel_excl_cntrs {
178 struct intel_excl_states states[2];
181 u16 has_exclusive[2];
182 u32 exclusive_present;
185 int refcnt; /* per-core: #HT threads */
186 unsigned core_id; /* per-core: core id */
189 struct x86_perf_task_context;
190 #define MAX_LBR_ENTRIES 32
193 X86_PERF_KFREE_SHARED = 0,
194 X86_PERF_KFREE_EXCL = 1,
198 struct cpu_hw_events {
200 * Generic x86 PMC bits
202 struct perf_event *events[X86_PMC_IDX_MAX]; /* in counter order */
203 unsigned long active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
204 unsigned long running[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
207 int n_events; /* the # of events in the below arrays */
208 int n_added; /* the # last events in the below arrays;
209 they've never been enabled yet */
210 int n_txn; /* the # last events in the below arrays;
211 added in the current transaction */
212 int assign[X86_PMC_IDX_MAX]; /* event to counter assignment */
213 u64 tags[X86_PMC_IDX_MAX];
215 struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
216 struct event_constraint *event_constraint[X86_PMC_IDX_MAX];
218 int n_excl; /* the number of exclusive events */
220 unsigned int txn_flags;
224 * Intel DebugStore bits
226 struct debug_store *ds;
233 /* Current super set of events hardware configuration */
235 u64 active_pebs_data_cfg;
236 int pebs_record_size;
243 struct perf_branch_stack lbr_stack;
244 struct perf_branch_entry lbr_entries[MAX_LBR_ENTRIES];
245 struct er_account *lbr_sel;
247 struct x86_perf_task_context *last_task_ctx;
251 * Intel host/guest exclude bits
253 u64 intel_ctrl_guest_mask;
254 u64 intel_ctrl_host_mask;
255 struct perf_guest_switch_msr guest_switch_msrs[X86_PMC_IDX_MAX];
258 * Intel checkpoint mask
263 * manage shared (per-core, per-cpu) registers
264 * used on Intel NHM/WSM/SNB
266 struct intel_shared_regs *shared_regs;
268 * manage exclusive counter access between hyperthread
270 struct event_constraint *constraint_list; /* in enable order */
271 struct intel_excl_cntrs *excl_cntrs;
272 int excl_thread_id; /* 0 or 1 */
275 * SKL TSX_FORCE_ABORT shadow
282 struct amd_nb *amd_nb;
283 /* Inverted mask of bits to clear in the perf_ctr ctrl registers */
284 u64 perf_ctr_virt_mask;
286 void *kfree_on_online[X86_PERF_KFREE_MAX];
289 #define __EVENT_CONSTRAINT_RANGE(c, e, n, m, w, o, f) { \
290 { .idxmsk64 = (n) }, \
299 #define __EVENT_CONSTRAINT(c, n, m, w, o, f) \
300 __EVENT_CONSTRAINT_RANGE(c, c, n, m, w, o, f)
302 #define EVENT_CONSTRAINT(c, n, m) \
303 __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 0, 0)
306 * The constraint_match() function only works for 'simple' event codes
307 * and not for extended (AMD64_EVENTSEL_EVENT) events codes.
309 #define EVENT_CONSTRAINT_RANGE(c, e, n, m) \
310 __EVENT_CONSTRAINT_RANGE(c, e, n, m, HWEIGHT(n), 0, 0)
312 #define INTEL_EXCLEVT_CONSTRAINT(c, n) \
313 __EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT, HWEIGHT(n),\
314 0, PERF_X86_EVENT_EXCL)
317 * The overlap flag marks event constraints with overlapping counter
318 * masks. This is the case if the counter mask of such an event is not
319 * a subset of any other counter mask of a constraint with an equal or
320 * higher weight, e.g.:
322 * c_overlaps = EVENT_CONSTRAINT_OVERLAP(0, 0x09, 0);
323 * c_another1 = EVENT_CONSTRAINT(0, 0x07, 0);
324 * c_another2 = EVENT_CONSTRAINT(0, 0x38, 0);
326 * The event scheduler may not select the correct counter in the first
327 * cycle because it needs to know which subsequent events will be
328 * scheduled. It may fail to schedule the events then. So we set the
329 * overlap flag for such constraints to give the scheduler a hint which
330 * events to select for counter rescheduling.
332 * Care must be taken as the rescheduling algorithm is O(n!) which
333 * will increase scheduling cycles for an over-committed system
334 * dramatically. The number of such EVENT_CONSTRAINT_OVERLAP() macros
335 * and its counter masks must be kept at a minimum.
337 #define EVENT_CONSTRAINT_OVERLAP(c, n, m) \
338 __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 1, 0)
341 * Constraint on the Event code.
343 #define INTEL_EVENT_CONSTRAINT(c, n) \
344 EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT)
347 * Constraint on a range of Event codes
349 #define INTEL_EVENT_CONSTRAINT_RANGE(c, e, n) \
350 EVENT_CONSTRAINT_RANGE(c, e, n, ARCH_PERFMON_EVENTSEL_EVENT)
353 * Constraint on the Event code + UMask + fixed-mask
355 * filter mask to validate fixed counter events.
356 * the following filters disqualify for fixed counters:
361 * - in_tx_checkpointed
362 * The other filters are supported by fixed counters.
363 * The any-thread option is supported starting with v3.
365 #define FIXED_EVENT_FLAGS (X86_RAW_EVENT_MASK|HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)
366 #define FIXED_EVENT_CONSTRAINT(c, n) \
367 EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS)
370 * Constraint on the Event code + UMask
372 #define INTEL_UEVENT_CONSTRAINT(c, n) \
373 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
375 /* Constraint on specific umask bit only + event */
376 #define INTEL_UBIT_EVENT_CONSTRAINT(c, n) \
377 EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|(c))
379 /* Like UEVENT_CONSTRAINT, but match flags too */
380 #define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \
381 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
383 #define INTEL_EXCLUEVT_CONSTRAINT(c, n) \
384 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \
385 HWEIGHT(n), 0, PERF_X86_EVENT_EXCL)
387 #define INTEL_PLD_CONSTRAINT(c, n) \
388 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
389 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT)
391 #define INTEL_PST_CONSTRAINT(c, n) \
392 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
393 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST)
395 /* Event constraint, but match on all event flags too. */
396 #define INTEL_FLAGS_EVENT_CONSTRAINT(c, n) \
397 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
399 #define INTEL_FLAGS_EVENT_CONSTRAINT_RANGE(c, e, n) \
400 EVENT_CONSTRAINT_RANGE(c, e, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
402 /* Check only flags, but allow all event/umask */
403 #define INTEL_ALL_EVENT_CONSTRAINT(code, n) \
404 EVENT_CONSTRAINT(code, n, X86_ALL_EVENT_FLAGS)
406 /* Check flags and event code, and set the HSW store flag */
407 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_ST(code, n) \
408 __EVENT_CONSTRAINT(code, n, \
409 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
410 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
412 /* Check flags and event code, and set the HSW load flag */
413 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD(code, n) \
414 __EVENT_CONSTRAINT(code, n, \
415 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
416 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
418 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD_RANGE(code, end, n) \
419 __EVENT_CONSTRAINT_RANGE(code, end, n, \
420 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
421 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
423 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_XLD(code, n) \
424 __EVENT_CONSTRAINT(code, n, \
425 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
427 PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
429 /* Check flags and event code/umask, and set the HSW store flag */
430 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(code, n) \
431 __EVENT_CONSTRAINT(code, n, \
432 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
433 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
435 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XST(code, n) \
436 __EVENT_CONSTRAINT(code, n, \
437 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
439 PERF_X86_EVENT_PEBS_ST_HSW|PERF_X86_EVENT_EXCL)
441 /* Check flags and event code/umask, and set the HSW load flag */
442 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(code, n) \
443 __EVENT_CONSTRAINT(code, n, \
444 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
445 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
447 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(code, n) \
448 __EVENT_CONSTRAINT(code, n, \
449 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
451 PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
453 /* Check flags and event code/umask, and set the HSW N/A flag */
454 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(code, n) \
455 __EVENT_CONSTRAINT(code, n, \
456 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
457 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_NA_HSW)
461 * We define the end marker as having a weight of -1
462 * to enable blacklisting of events using a counter bitmask
463 * of zero and thus a weight of zero.
464 * The end marker has a weight that cannot possibly be
465 * obtained from counting the bits in the bitmask.
467 #define EVENT_CONSTRAINT_END { .weight = -1 }
470 * Check for end marker with weight == -1
472 #define for_each_event_constraint(e, c) \
473 for ((e) = (c); (e)->weight != -1; (e)++)
476 * Extra registers for specific events.
478 * Some events need large masks and require external MSRs.
479 * Those extra MSRs end up being shared for all events on
480 * a PMU and sometimes between PMU of sibling HT threads.
481 * In either case, the kernel needs to handle conflicting
482 * accesses to those extra, shared, regs. The data structure
483 * to manage those registers is stored in cpu_hw_event.
490 int idx; /* per_xxx->regs[] reg index */
491 bool extra_msr_access;
494 #define EVENT_EXTRA_REG(e, ms, m, vm, i) { \
497 .config_mask = (m), \
498 .valid_mask = (vm), \
499 .idx = EXTRA_REG_##i, \
500 .extra_msr_access = true, \
503 #define INTEL_EVENT_EXTRA_REG(event, msr, vm, idx) \
504 EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT, vm, idx)
506 #define INTEL_UEVENT_EXTRA_REG(event, msr, vm, idx) \
507 EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT | \
508 ARCH_PERFMON_EVENTSEL_UMASK, vm, idx)
510 #define INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(c) \
511 INTEL_UEVENT_EXTRA_REG(c, \
512 MSR_PEBS_LD_LAT_THRESHOLD, \
516 #define EVENT_EXTRA_END EVENT_EXTRA_REG(0, 0, 0, 0, RSP_0)
518 union perf_capabilities {
526 * PMU supports separate counter range for writing
529 u64 full_width_write:1;
535 struct x86_pmu_quirk {
536 struct x86_pmu_quirk *next;
540 union x86_pmu_config {
561 #define X86_CONFIG(args...) ((union x86_pmu_config){.bits = {args}}).value
564 x86_lbr_exclusive_lbr,
565 x86_lbr_exclusive_bts,
566 x86_lbr_exclusive_pt,
567 x86_lbr_exclusive_max,
571 * struct x86_pmu - generic x86 pmu
575 * Generic x86 PMC bits
579 int (*handle_irq)(struct pt_regs *);
580 void (*disable_all)(void);
581 void (*enable_all)(int added);
582 void (*enable)(struct perf_event *);
583 void (*disable)(struct perf_event *);
584 void (*add)(struct perf_event *);
585 void (*del)(struct perf_event *);
586 void (*read)(struct perf_event *event);
587 int (*hw_config)(struct perf_event *event);
588 int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
591 int (*addr_offset)(int index, bool eventsel);
592 int (*rdpmc_index)(int index);
593 u64 (*event_map)(int);
596 int num_counters_fixed;
600 unsigned long events_maskl;
601 unsigned long events_mask[BITS_TO_LONGS(ARCH_PERFMON_EVENTS_COUNT)];
606 struct event_constraint *
607 (*get_event_constraints)(struct cpu_hw_events *cpuc,
609 struct perf_event *event);
611 void (*put_event_constraints)(struct cpu_hw_events *cpuc,
612 struct perf_event *event);
614 void (*start_scheduling)(struct cpu_hw_events *cpuc);
616 void (*commit_scheduling)(struct cpu_hw_events *cpuc, int idx, int cntr);
618 void (*stop_scheduling)(struct cpu_hw_events *cpuc);
620 struct event_constraint *event_constraints;
621 struct x86_pmu_quirk *quirks;
622 int perfctr_second_write;
623 u64 (*limit_period)(struct perf_event *event, u64 l);
625 /* PMI handler bits */
626 unsigned int late_ack :1,
631 int attr_rdpmc_broken;
633 struct attribute **format_attrs;
634 struct attribute **event_attrs;
635 struct attribute **caps_attrs;
637 ssize_t (*events_sysfs_show)(char *page, u64 config);
638 struct attribute **cpu_events;
640 unsigned long attr_freeze_on_smi;
641 struct attribute **attrs;
646 int (*cpu_prepare)(int cpu);
647 void (*cpu_starting)(int cpu);
648 void (*cpu_dying)(int cpu);
649 void (*cpu_dead)(int cpu);
651 void (*check_microcode)(void);
652 void (*sched_task)(struct perf_event_context *ctx,
656 * Intel Arch Perfmon v2+
659 union perf_capabilities intel_cap;
662 * Intel DebugStore bits
671 pebs_no_isolation :1,
673 int pebs_record_size;
674 int pebs_buffer_size;
676 void (*drain_pebs)(struct pt_regs *regs);
677 struct event_constraint *pebs_constraints;
678 void (*pebs_aliases)(struct perf_event *event);
679 unsigned long large_pebs_flags;
685 unsigned long lbr_tos, lbr_from, lbr_to; /* MSR base regs */
686 int lbr_nr; /* hardware stack size */
687 u64 lbr_sel_mask; /* LBR_SELECT valid bits */
688 const int *lbr_sel_map; /* lbr_select mappings */
689 bool lbr_double_abort; /* duplicated lbr aborts */
690 bool lbr_pt_coexist; /* (LBR|BTS) may coexist with PT */
693 * Intel PT/LBR/BTS are exclusive
695 atomic_t lbr_exclusive[x86_lbr_exclusive_max];
700 unsigned int amd_nb_constraints : 1;
703 * Extra registers for events
705 struct extra_reg *extra_regs;
709 * Intel host/guest support (KVM)
711 struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr);
714 * Check period value for PERF_EVENT_IOC_PERIOD ioctl.
716 int (*check_period) (struct perf_event *event, u64 period);
719 struct x86_perf_task_context {
720 u64 lbr_from[MAX_LBR_ENTRIES];
721 u64 lbr_to[MAX_LBR_ENTRIES];
722 u64 lbr_info[MAX_LBR_ENTRIES];
725 int lbr_callstack_users;
730 #define x86_add_quirk(func_) \
732 static struct x86_pmu_quirk __quirk __initdata = { \
735 __quirk.next = x86_pmu.quirks; \
736 x86_pmu.quirks = &__quirk; \
742 #define PMU_FL_NO_HT_SHARING 0x1 /* no hyper-threading resource sharing */
743 #define PMU_FL_HAS_RSP_1 0x2 /* has 2 equivalent offcore_rsp regs */
744 #define PMU_FL_EXCL_CNTRS 0x4 /* has exclusive counter requirements */
745 #define PMU_FL_EXCL_ENABLED 0x8 /* exclusive counter active */
746 #define PMU_FL_PEBS_ALL 0x10 /* all events are valid PEBS events */
747 #define PMU_FL_TFA 0x20 /* deal with TSX force abort */
749 #define EVENT_VAR(_id) event_attr_##_id
750 #define EVENT_PTR(_id) &event_attr_##_id.attr.attr
752 #define EVENT_ATTR(_name, _id) \
753 static struct perf_pmu_events_attr EVENT_VAR(_id) = { \
754 .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
755 .id = PERF_COUNT_HW_##_id, \
759 #define EVENT_ATTR_STR(_name, v, str) \
760 static struct perf_pmu_events_attr event_attr_##v = { \
761 .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
766 #define EVENT_ATTR_STR_HT(_name, v, noht, ht) \
767 static struct perf_pmu_events_ht_attr event_attr_##v = { \
768 .attr = __ATTR(_name, 0444, events_ht_sysfs_show, NULL),\
770 .event_str_noht = noht, \
771 .event_str_ht = ht, \
774 struct pmu *x86_get_pmu(void);
775 extern struct x86_pmu x86_pmu __read_mostly;
777 static inline bool x86_pmu_has_lbr_callstack(void)
779 return x86_pmu.lbr_sel_map &&
780 x86_pmu.lbr_sel_map[PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT] > 0;
783 DECLARE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
785 int x86_perf_event_set_period(struct perf_event *event);
788 * Generalized hw caching related hw_event table, filled
789 * in on a per model basis. A value of 0 means
790 * 'not supported', -1 means 'hw_event makes no sense on
791 * this CPU', any other value means the raw hw_event
795 #define C(x) PERF_COUNT_HW_CACHE_##x
797 extern u64 __read_mostly hw_cache_event_ids
798 [PERF_COUNT_HW_CACHE_MAX]
799 [PERF_COUNT_HW_CACHE_OP_MAX]
800 [PERF_COUNT_HW_CACHE_RESULT_MAX];
801 extern u64 __read_mostly hw_cache_extra_regs
802 [PERF_COUNT_HW_CACHE_MAX]
803 [PERF_COUNT_HW_CACHE_OP_MAX]
804 [PERF_COUNT_HW_CACHE_RESULT_MAX];
806 u64 x86_perf_event_update(struct perf_event *event);
808 static inline unsigned int x86_pmu_config_addr(int index)
810 return x86_pmu.eventsel + (x86_pmu.addr_offset ?
811 x86_pmu.addr_offset(index, true) : index);
814 static inline unsigned int x86_pmu_event_addr(int index)
816 return x86_pmu.perfctr + (x86_pmu.addr_offset ?
817 x86_pmu.addr_offset(index, false) : index);
820 static inline int x86_pmu_rdpmc_index(int index)
822 return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index;
825 int x86_add_exclusive(unsigned int what);
827 void x86_del_exclusive(unsigned int what);
829 int x86_reserve_hardware(void);
831 void x86_release_hardware(void);
833 int x86_pmu_max_precise(void);
835 void hw_perf_lbr_event_destroy(struct perf_event *event);
837 int x86_setup_perfctr(struct perf_event *event);
839 int x86_pmu_hw_config(struct perf_event *event);
841 void x86_pmu_disable_all(void);
843 static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
846 u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
848 if (hwc->extra_reg.reg)
849 wrmsrl(hwc->extra_reg.reg, hwc->extra_reg.config);
850 wrmsrl(hwc->config_base, (hwc->config | enable_mask) & ~disable_mask);
853 void x86_pmu_enable_all(int added);
855 int perf_assign_events(struct event_constraint **constraints, int n,
856 int wmin, int wmax, int gpmax, int *assign);
857 int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign);
859 void x86_pmu_stop(struct perf_event *event, int flags);
861 static inline void x86_pmu_disable_event(struct perf_event *event)
863 struct hw_perf_event *hwc = &event->hw;
865 wrmsrl(hwc->config_base, hwc->config);
868 void x86_pmu_enable_event(struct perf_event *event);
870 int x86_pmu_handle_irq(struct pt_regs *regs);
872 extern struct event_constraint emptyconstraint;
874 extern struct event_constraint unconstrained;
876 static inline bool kernel_ip(unsigned long ip)
879 return ip > PAGE_OFFSET;
886 * Not all PMUs provide the right context information to place the reported IP
887 * into full context. Specifically segment registers are typically not
890 * Assuming the address is a linear address (it is for IBS), we fake the CS and
891 * vm86 mode using the known zero-based code segment and 'fix up' the registers
894 * Intel PEBS/LBR appear to typically provide the effective address, nothing
895 * much we can do about that but pray and treat it like a linear address.
897 static inline void set_linear_ip(struct pt_regs *regs, unsigned long ip)
899 regs->cs = kernel_ip(ip) ? __KERNEL_CS : __USER_CS;
900 if (regs->flags & X86_VM_MASK)
901 regs->flags ^= (PERF_EFLAGS_VM | X86_VM_MASK);
905 ssize_t x86_event_sysfs_show(char *page, u64 config, u64 event);
906 ssize_t intel_event_sysfs_show(char *page, u64 config);
908 struct attribute **merge_attr(struct attribute **a, struct attribute **b);
910 ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr,
912 ssize_t events_ht_sysfs_show(struct device *dev, struct device_attribute *attr,
915 #ifdef CONFIG_CPU_SUP_AMD
917 int amd_pmu_init(void);
919 #else /* CONFIG_CPU_SUP_AMD */
921 static inline int amd_pmu_init(void)
926 #endif /* CONFIG_CPU_SUP_AMD */
928 #ifdef CONFIG_CPU_SUP_INTEL
930 static inline bool intel_pmu_has_bts_period(struct perf_event *event, u64 period)
932 struct hw_perf_event *hwc = &event->hw;
933 unsigned int hw_event, bts_event;
935 if (event->attr.freq)
938 hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
939 bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
941 return hw_event == bts_event && period == 1;
944 static inline bool intel_pmu_has_bts(struct perf_event *event)
946 struct hw_perf_event *hwc = &event->hw;
948 return intel_pmu_has_bts_period(event, hwc->sample_period);
951 int intel_pmu_save_and_restart(struct perf_event *event);
953 struct event_constraint *
954 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
955 struct perf_event *event);
957 extern int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu);
958 extern void intel_cpuc_finish(struct cpu_hw_events *cpuc);
960 int intel_pmu_init(void);
962 void init_debug_store_on_cpu(int cpu);
964 void fini_debug_store_on_cpu(int cpu);
966 void release_ds_buffers(void);
968 void reserve_ds_buffers(void);
970 extern struct event_constraint bts_constraint;
972 void intel_pmu_enable_bts(u64 config);
974 void intel_pmu_disable_bts(void);
976 int intel_pmu_drain_bts_buffer(void);
978 extern struct event_constraint intel_core2_pebs_event_constraints[];
980 extern struct event_constraint intel_atom_pebs_event_constraints[];
982 extern struct event_constraint intel_slm_pebs_event_constraints[];
984 extern struct event_constraint intel_glm_pebs_event_constraints[];
986 extern struct event_constraint intel_glp_pebs_event_constraints[];
988 extern struct event_constraint intel_nehalem_pebs_event_constraints[];
990 extern struct event_constraint intel_westmere_pebs_event_constraints[];
992 extern struct event_constraint intel_snb_pebs_event_constraints[];
994 extern struct event_constraint intel_ivb_pebs_event_constraints[];
996 extern struct event_constraint intel_hsw_pebs_event_constraints[];
998 extern struct event_constraint intel_bdw_pebs_event_constraints[];
1000 extern struct event_constraint intel_skl_pebs_event_constraints[];
1002 extern struct event_constraint intel_icl_pebs_event_constraints[];
1004 struct event_constraint *intel_pebs_constraints(struct perf_event *event);
1006 void intel_pmu_pebs_add(struct perf_event *event);
1008 void intel_pmu_pebs_del(struct perf_event *event);
1010 void intel_pmu_pebs_enable(struct perf_event *event);
1012 void intel_pmu_pebs_disable(struct perf_event *event);
1014 void intel_pmu_pebs_enable_all(void);
1016 void intel_pmu_pebs_disable_all(void);
1018 void intel_pmu_pebs_sched_task(struct perf_event_context *ctx, bool sched_in);
1020 void intel_pmu_auto_reload_read(struct perf_event *event);
1022 void intel_pmu_store_pebs_lbrs(struct pebs_lbr *lbr);
1024 void intel_ds_init(void);
1026 void intel_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in);
1028 u64 lbr_from_signext_quirk_wr(u64 val);
1030 void intel_pmu_lbr_reset(void);
1032 void intel_pmu_lbr_add(struct perf_event *event);
1034 void intel_pmu_lbr_del(struct perf_event *event);
1036 void intel_pmu_lbr_enable_all(bool pmi);
1038 void intel_pmu_lbr_disable_all(void);
1040 void intel_pmu_lbr_read(void);
1042 void intel_pmu_lbr_init_core(void);
1044 void intel_pmu_lbr_init_nhm(void);
1046 void intel_pmu_lbr_init_atom(void);
1048 void intel_pmu_lbr_init_slm(void);
1050 void intel_pmu_lbr_init_snb(void);
1052 void intel_pmu_lbr_init_hsw(void);
1054 void intel_pmu_lbr_init_skl(void);
1056 void intel_pmu_lbr_init_knl(void);
1058 void intel_pmu_pebs_data_source_nhm(void);
1060 void intel_pmu_pebs_data_source_skl(bool pmem);
1062 int intel_pmu_setup_lbr_filter(struct perf_event *event);
1064 void intel_pt_interrupt(void);
1066 int intel_bts_interrupt(void);
1068 void intel_bts_enable_local(void);
1070 void intel_bts_disable_local(void);
1072 int p4_pmu_init(void);
1074 int p6_pmu_init(void);
1076 int knc_pmu_init(void);
1078 static inline int is_ht_workaround_enabled(void)
1080 return !!(x86_pmu.flags & PMU_FL_EXCL_ENABLED);
1083 #else /* CONFIG_CPU_SUP_INTEL */
1085 static inline void reserve_ds_buffers(void)
1089 static inline void release_ds_buffers(void)
1093 static inline int intel_pmu_init(void)
1098 static inline int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
1103 static inline void intel_cpuc_finish(struct cpu_hw_events *cpuc)
1107 static inline int is_ht_workaround_enabled(void)
1111 #endif /* CONFIG_CPU_SUP_INTEL */