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)];
59 * struct hw_perf_event.flags flags
61 #define PERF_X86_EVENT_PEBS_LDLAT 0x0001 /* ld+ldlat data address sampling */
62 #define PERF_X86_EVENT_PEBS_ST 0x0002 /* st data address sampling */
63 #define PERF_X86_EVENT_PEBS_ST_HSW 0x0004 /* haswell style datala, store */
64 #define PERF_X86_EVENT_COMMITTED 0x0008 /* event passed commit_txn */
65 #define PERF_X86_EVENT_PEBS_LD_HSW 0x0010 /* haswell style datala, load */
66 #define PERF_X86_EVENT_PEBS_NA_HSW 0x0020 /* haswell style datala, unknown */
67 #define PERF_X86_EVENT_EXCL 0x0040 /* HT exclusivity on counter */
68 #define PERF_X86_EVENT_DYNAMIC 0x0080 /* dynamic alloc'd constraint */
69 #define PERF_X86_EVENT_RDPMC_ALLOWED 0x0100 /* grant rdpmc permission */
70 #define PERF_X86_EVENT_EXCL_ACCT 0x0200 /* accounted EXCL event */
71 #define PERF_X86_EVENT_AUTO_RELOAD 0x0400 /* use PEBS auto-reload */
72 #define PERF_X86_EVENT_FREERUNNING 0x0800 /* use freerunning PEBS */
76 int nb_id; /* NorthBridge id */
77 int refcnt; /* reference count */
78 struct perf_event *owners[X86_PMC_IDX_MAX];
79 struct event_constraint event_constraints[X86_PMC_IDX_MAX];
82 #define PEBS_COUNTER_MASK ((1ULL << MAX_PEBS_EVENTS) - 1)
85 * Flags PEBS can handle without an PMI.
87 * TID can only be handled by flushing at context switch.
88 * REGS_USER can be handled for events limited to ring 3.
91 #define PEBS_FREERUNNING_FLAGS \
92 (PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \
93 PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
94 PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
95 PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
96 PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER)
108 PERF_REG_X86_FLAGS | \
119 * Per register state.
122 raw_spinlock_t lock; /* per-core: protect structure */
123 u64 config; /* extra MSR config */
124 u64 reg; /* extra MSR number */
125 atomic_t ref; /* reference count */
131 * Used to coordinate shared registers between HT threads or
132 * among events on a single PMU.
134 struct intel_shared_regs {
135 struct er_account regs[EXTRA_REG_MAX];
136 int refcnt; /* per-core: #HT threads */
137 unsigned core_id; /* per-core: core id */
140 enum intel_excl_state_type {
141 INTEL_EXCL_UNUSED = 0, /* counter is unused */
142 INTEL_EXCL_SHARED = 1, /* counter can be used by both threads */
143 INTEL_EXCL_EXCLUSIVE = 2, /* counter can be used by one thread only */
146 struct intel_excl_states {
147 enum intel_excl_state_type state[X86_PMC_IDX_MAX];
148 bool sched_started; /* true if scheduling has started */
151 struct intel_excl_cntrs {
154 struct intel_excl_states states[2];
157 u16 has_exclusive[2];
158 u32 exclusive_present;
161 int refcnt; /* per-core: #HT threads */
162 unsigned core_id; /* per-core: core id */
165 #define MAX_LBR_ENTRIES 32
168 X86_PERF_KFREE_SHARED = 0,
169 X86_PERF_KFREE_EXCL = 1,
173 struct cpu_hw_events {
175 * Generic x86 PMC bits
177 struct perf_event *events[X86_PMC_IDX_MAX]; /* in counter order */
178 unsigned long active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
179 unsigned long running[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
182 int n_events; /* the # of events in the below arrays */
183 int n_added; /* the # last events in the below arrays;
184 they've never been enabled yet */
185 int n_txn; /* the # last events in the below arrays;
186 added in the current transaction */
187 int assign[X86_PMC_IDX_MAX]; /* event to counter assignment */
188 u64 tags[X86_PMC_IDX_MAX];
190 struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
191 struct event_constraint *event_constraint[X86_PMC_IDX_MAX];
193 int n_excl; /* the number of exclusive events */
195 unsigned int txn_flags;
199 * Intel DebugStore bits
201 struct debug_store *ds;
212 struct perf_branch_stack lbr_stack;
213 struct perf_branch_entry lbr_entries[MAX_LBR_ENTRIES];
214 struct er_account *lbr_sel;
218 * Intel host/guest exclude bits
220 u64 intel_ctrl_guest_mask;
221 u64 intel_ctrl_host_mask;
222 struct perf_guest_switch_msr guest_switch_msrs[X86_PMC_IDX_MAX];
225 * Intel checkpoint mask
230 * manage shared (per-core, per-cpu) registers
231 * used on Intel NHM/WSM/SNB
233 struct intel_shared_regs *shared_regs;
235 * manage exclusive counter access between hyperthread
237 struct event_constraint *constraint_list; /* in enable order */
238 struct intel_excl_cntrs *excl_cntrs;
239 int excl_thread_id; /* 0 or 1 */
244 struct amd_nb *amd_nb;
245 /* Inverted mask of bits to clear in the perf_ctr ctrl registers */
246 u64 perf_ctr_virt_mask;
248 void *kfree_on_online[X86_PERF_KFREE_MAX];
251 #define __EVENT_CONSTRAINT(c, n, m, w, o, f) {\
252 { .idxmsk64 = (n) }, \
260 #define EVENT_CONSTRAINT(c, n, m) \
261 __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 0, 0)
263 #define INTEL_EXCLEVT_CONSTRAINT(c, n) \
264 __EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT, HWEIGHT(n),\
265 0, PERF_X86_EVENT_EXCL)
268 * The overlap flag marks event constraints with overlapping counter
269 * masks. This is the case if the counter mask of such an event is not
270 * a subset of any other counter mask of a constraint with an equal or
271 * higher weight, e.g.:
273 * c_overlaps = EVENT_CONSTRAINT_OVERLAP(0, 0x09, 0);
274 * c_another1 = EVENT_CONSTRAINT(0, 0x07, 0);
275 * c_another2 = EVENT_CONSTRAINT(0, 0x38, 0);
277 * The event scheduler may not select the correct counter in the first
278 * cycle because it needs to know which subsequent events will be
279 * scheduled. It may fail to schedule the events then. So we set the
280 * overlap flag for such constraints to give the scheduler a hint which
281 * events to select for counter rescheduling.
283 * Care must be taken as the rescheduling algorithm is O(n!) which
284 * will increase scheduling cycles for an over-committed system
285 * dramatically. The number of such EVENT_CONSTRAINT_OVERLAP() macros
286 * and its counter masks must be kept at a minimum.
288 #define EVENT_CONSTRAINT_OVERLAP(c, n, m) \
289 __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 1, 0)
292 * Constraint on the Event code.
294 #define INTEL_EVENT_CONSTRAINT(c, n) \
295 EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT)
298 * Constraint on the Event code + UMask + fixed-mask
300 * filter mask to validate fixed counter events.
301 * the following filters disqualify for fixed counters:
306 * - in_tx_checkpointed
307 * The other filters are supported by fixed counters.
308 * The any-thread option is supported starting with v3.
310 #define FIXED_EVENT_FLAGS (X86_RAW_EVENT_MASK|HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)
311 #define FIXED_EVENT_CONSTRAINT(c, n) \
312 EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS)
315 * Constraint on the Event code + UMask
317 #define INTEL_UEVENT_CONSTRAINT(c, n) \
318 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
320 /* Constraint on specific umask bit only + event */
321 #define INTEL_UBIT_EVENT_CONSTRAINT(c, n) \
322 EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|(c))
324 /* Like UEVENT_CONSTRAINT, but match flags too */
325 #define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \
326 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
328 #define INTEL_EXCLUEVT_CONSTRAINT(c, n) \
329 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \
330 HWEIGHT(n), 0, PERF_X86_EVENT_EXCL)
332 #define INTEL_PLD_CONSTRAINT(c, n) \
333 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
334 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT)
336 #define INTEL_PST_CONSTRAINT(c, n) \
337 __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
338 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST)
340 /* Event constraint, but match on all event flags too. */
341 #define INTEL_FLAGS_EVENT_CONSTRAINT(c, n) \
342 EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
344 /* Check only flags, but allow all event/umask */
345 #define INTEL_ALL_EVENT_CONSTRAINT(code, n) \
346 EVENT_CONSTRAINT(code, n, X86_ALL_EVENT_FLAGS)
348 /* Check flags and event code, and set the HSW store flag */
349 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_ST(code, n) \
350 __EVENT_CONSTRAINT(code, n, \
351 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
352 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
354 /* Check flags and event code, and set the HSW load flag */
355 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD(code, n) \
356 __EVENT_CONSTRAINT(code, n, \
357 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
358 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
360 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_XLD(code, n) \
361 __EVENT_CONSTRAINT(code, n, \
362 ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
364 PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
366 /* Check flags and event code/umask, and set the HSW store flag */
367 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(code, n) \
368 __EVENT_CONSTRAINT(code, n, \
369 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
370 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
372 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XST(code, n) \
373 __EVENT_CONSTRAINT(code, n, \
374 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
376 PERF_X86_EVENT_PEBS_ST_HSW|PERF_X86_EVENT_EXCL)
378 /* Check flags and event code/umask, and set the HSW load flag */
379 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(code, n) \
380 __EVENT_CONSTRAINT(code, n, \
381 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
382 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
384 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(code, n) \
385 __EVENT_CONSTRAINT(code, n, \
386 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
388 PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
390 /* Check flags and event code/umask, and set the HSW N/A flag */
391 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(code, n) \
392 __EVENT_CONSTRAINT(code, n, \
393 INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
394 HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_NA_HSW)
398 * We define the end marker as having a weight of -1
399 * to enable blacklisting of events using a counter bitmask
400 * of zero and thus a weight of zero.
401 * The end marker has a weight that cannot possibly be
402 * obtained from counting the bits in the bitmask.
404 #define EVENT_CONSTRAINT_END { .weight = -1 }
407 * Check for end marker with weight == -1
409 #define for_each_event_constraint(e, c) \
410 for ((e) = (c); (e)->weight != -1; (e)++)
413 * Extra registers for specific events.
415 * Some events need large masks and require external MSRs.
416 * Those extra MSRs end up being shared for all events on
417 * a PMU and sometimes between PMU of sibling HT threads.
418 * In either case, the kernel needs to handle conflicting
419 * accesses to those extra, shared, regs. The data structure
420 * to manage those registers is stored in cpu_hw_event.
427 int idx; /* per_xxx->regs[] reg index */
428 bool extra_msr_access;
431 #define EVENT_EXTRA_REG(e, ms, m, vm, i) { \
434 .config_mask = (m), \
435 .valid_mask = (vm), \
436 .idx = EXTRA_REG_##i, \
437 .extra_msr_access = true, \
440 #define INTEL_EVENT_EXTRA_REG(event, msr, vm, idx) \
441 EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT, vm, idx)
443 #define INTEL_UEVENT_EXTRA_REG(event, msr, vm, idx) \
444 EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT | \
445 ARCH_PERFMON_EVENTSEL_UMASK, vm, idx)
447 #define INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(c) \
448 INTEL_UEVENT_EXTRA_REG(c, \
449 MSR_PEBS_LD_LAT_THRESHOLD, \
453 #define EVENT_EXTRA_END EVENT_EXTRA_REG(0, 0, 0, 0, RSP_0)
455 union perf_capabilities {
463 * PMU supports separate counter range for writing
466 u64 full_width_write:1;
471 struct x86_pmu_quirk {
472 struct x86_pmu_quirk *next;
476 union x86_pmu_config {
497 #define X86_CONFIG(args...) ((union x86_pmu_config){.bits = {args}}).value
500 x86_lbr_exclusive_lbr,
501 x86_lbr_exclusive_bts,
502 x86_lbr_exclusive_pt,
503 x86_lbr_exclusive_max,
507 * struct x86_pmu - generic x86 pmu
511 * Generic x86 PMC bits
515 int (*handle_irq)(struct pt_regs *);
516 void (*disable_all)(void);
517 void (*enable_all)(int added);
518 void (*enable)(struct perf_event *);
519 void (*disable)(struct perf_event *);
520 void (*add)(struct perf_event *);
521 void (*del)(struct perf_event *);
522 int (*hw_config)(struct perf_event *event);
523 int (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
526 int (*addr_offset)(int index, bool eventsel);
527 int (*rdpmc_index)(int index);
528 u64 (*event_map)(int);
531 int num_counters_fixed;
535 unsigned long events_maskl;
536 unsigned long events_mask[BITS_TO_LONGS(ARCH_PERFMON_EVENTS_COUNT)];
541 struct event_constraint *
542 (*get_event_constraints)(struct cpu_hw_events *cpuc,
544 struct perf_event *event);
546 void (*put_event_constraints)(struct cpu_hw_events *cpuc,
547 struct perf_event *event);
549 void (*start_scheduling)(struct cpu_hw_events *cpuc);
551 void (*commit_scheduling)(struct cpu_hw_events *cpuc, int idx, int cntr);
553 void (*stop_scheduling)(struct cpu_hw_events *cpuc);
555 struct event_constraint *event_constraints;
556 struct x86_pmu_quirk *quirks;
557 int perfctr_second_write;
559 unsigned (*limit_period)(struct perf_event *event, unsigned l);
564 int attr_rdpmc_broken;
566 struct attribute **format_attrs;
567 struct attribute **event_attrs;
568 struct attribute **caps_attrs;
570 ssize_t (*events_sysfs_show)(char *page, u64 config);
571 struct attribute **cpu_events;
573 unsigned long attr_freeze_on_smi;
574 struct attribute **attrs;
579 int (*cpu_prepare)(int cpu);
580 void (*cpu_starting)(int cpu);
581 void (*cpu_dying)(int cpu);
582 void (*cpu_dead)(int cpu);
584 void (*check_microcode)(void);
585 void (*sched_task)(struct perf_event_context *ctx,
589 * Intel Arch Perfmon v2+
592 union perf_capabilities intel_cap;
595 * Intel DebugStore bits
604 int pebs_record_size;
605 int pebs_buffer_size;
606 void (*drain_pebs)(struct pt_regs *regs);
607 struct event_constraint *pebs_constraints;
608 void (*pebs_aliases)(struct perf_event *event);
610 unsigned long free_running_flags;
615 unsigned long lbr_tos, lbr_from, lbr_to; /* MSR base regs */
616 int lbr_nr; /* hardware stack size */
617 u64 lbr_sel_mask; /* LBR_SELECT valid bits */
618 const int *lbr_sel_map; /* lbr_select mappings */
619 bool lbr_double_abort; /* duplicated lbr aborts */
620 bool lbr_pt_coexist; /* (LBR|BTS) may coexist with PT */
623 * Intel PT/LBR/BTS are exclusive
625 atomic_t lbr_exclusive[x86_lbr_exclusive_max];
630 unsigned int amd_nb_constraints : 1;
633 * Extra registers for events
635 struct extra_reg *extra_regs;
639 * Intel host/guest support (KVM)
641 struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr);
644 struct x86_perf_task_context {
645 u64 lbr_from[MAX_LBR_ENTRIES];
646 u64 lbr_to[MAX_LBR_ENTRIES];
647 u64 lbr_info[MAX_LBR_ENTRIES];
649 int lbr_callstack_users;
653 #define x86_add_quirk(func_) \
655 static struct x86_pmu_quirk __quirk __initdata = { \
658 __quirk.next = x86_pmu.quirks; \
659 x86_pmu.quirks = &__quirk; \
665 #define PMU_FL_NO_HT_SHARING 0x1 /* no hyper-threading resource sharing */
666 #define PMU_FL_HAS_RSP_1 0x2 /* has 2 equivalent offcore_rsp regs */
667 #define PMU_FL_EXCL_CNTRS 0x4 /* has exclusive counter requirements */
668 #define PMU_FL_EXCL_ENABLED 0x8 /* exclusive counter active */
670 #define EVENT_VAR(_id) event_attr_##_id
671 #define EVENT_PTR(_id) &event_attr_##_id.attr.attr
673 #define EVENT_ATTR(_name, _id) \
674 static struct perf_pmu_events_attr EVENT_VAR(_id) = { \
675 .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
676 .id = PERF_COUNT_HW_##_id, \
680 #define EVENT_ATTR_STR(_name, v, str) \
681 static struct perf_pmu_events_attr event_attr_##v = { \
682 .attr = __ATTR(_name, 0444, events_sysfs_show, NULL), \
687 #define EVENT_ATTR_STR_HT(_name, v, noht, ht) \
688 static struct perf_pmu_events_ht_attr event_attr_##v = { \
689 .attr = __ATTR(_name, 0444, events_ht_sysfs_show, NULL),\
691 .event_str_noht = noht, \
692 .event_str_ht = ht, \
695 extern struct x86_pmu x86_pmu __read_mostly;
697 static inline bool x86_pmu_has_lbr_callstack(void)
699 return x86_pmu.lbr_sel_map &&
700 x86_pmu.lbr_sel_map[PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT] > 0;
703 DECLARE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
705 int x86_perf_event_set_period(struct perf_event *event);
708 * Generalized hw caching related hw_event table, filled
709 * in on a per model basis. A value of 0 means
710 * 'not supported', -1 means 'hw_event makes no sense on
711 * this CPU', any other value means the raw hw_event
715 #define C(x) PERF_COUNT_HW_CACHE_##x
717 extern u64 __read_mostly hw_cache_event_ids
718 [PERF_COUNT_HW_CACHE_MAX]
719 [PERF_COUNT_HW_CACHE_OP_MAX]
720 [PERF_COUNT_HW_CACHE_RESULT_MAX];
721 extern u64 __read_mostly hw_cache_extra_regs
722 [PERF_COUNT_HW_CACHE_MAX]
723 [PERF_COUNT_HW_CACHE_OP_MAX]
724 [PERF_COUNT_HW_CACHE_RESULT_MAX];
726 u64 x86_perf_event_update(struct perf_event *event);
728 static inline unsigned int x86_pmu_config_addr(int index)
730 return x86_pmu.eventsel + (x86_pmu.addr_offset ?
731 x86_pmu.addr_offset(index, true) : index);
734 static inline unsigned int x86_pmu_event_addr(int index)
736 return x86_pmu.perfctr + (x86_pmu.addr_offset ?
737 x86_pmu.addr_offset(index, false) : index);
740 static inline int x86_pmu_rdpmc_index(int index)
742 return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index;
745 int x86_add_exclusive(unsigned int what);
747 void x86_del_exclusive(unsigned int what);
749 int x86_reserve_hardware(void);
751 void x86_release_hardware(void);
753 int x86_pmu_max_precise(void);
755 void hw_perf_lbr_event_destroy(struct perf_event *event);
757 int x86_setup_perfctr(struct perf_event *event);
759 int x86_pmu_hw_config(struct perf_event *event);
761 void x86_pmu_disable_all(void);
763 static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
766 u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
768 if (hwc->extra_reg.reg)
769 wrmsrl(hwc->extra_reg.reg, hwc->extra_reg.config);
770 wrmsrl(hwc->config_base, (hwc->config | enable_mask) & ~disable_mask);
773 void x86_pmu_enable_all(int added);
775 int perf_assign_events(struct event_constraint **constraints, int n,
776 int wmin, int wmax, int gpmax, int *assign);
777 int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign);
779 void x86_pmu_stop(struct perf_event *event, int flags);
781 static inline void x86_pmu_disable_event(struct perf_event *event)
783 struct hw_perf_event *hwc = &event->hw;
785 wrmsrl(hwc->config_base, hwc->config);
788 void x86_pmu_enable_event(struct perf_event *event);
790 int x86_pmu_handle_irq(struct pt_regs *regs);
792 extern struct event_constraint emptyconstraint;
794 extern struct event_constraint unconstrained;
796 static inline bool kernel_ip(unsigned long ip)
799 return ip > PAGE_OFFSET;
806 * Not all PMUs provide the right context information to place the reported IP
807 * into full context. Specifically segment registers are typically not
810 * Assuming the address is a linear address (it is for IBS), we fake the CS and
811 * vm86 mode using the known zero-based code segment and 'fix up' the registers
814 * Intel PEBS/LBR appear to typically provide the effective address, nothing
815 * much we can do about that but pray and treat it like a linear address.
817 static inline void set_linear_ip(struct pt_regs *regs, unsigned long ip)
819 regs->cs = kernel_ip(ip) ? __KERNEL_CS : __USER_CS;
820 if (regs->flags & X86_VM_MASK)
821 regs->flags ^= (PERF_EFLAGS_VM | X86_VM_MASK);
825 ssize_t x86_event_sysfs_show(char *page, u64 config, u64 event);
826 ssize_t intel_event_sysfs_show(char *page, u64 config);
828 struct attribute **merge_attr(struct attribute **a, struct attribute **b);
830 ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr,
832 ssize_t events_ht_sysfs_show(struct device *dev, struct device_attribute *attr,
835 #ifdef CONFIG_CPU_SUP_AMD
837 int amd_pmu_init(void);
839 #else /* CONFIG_CPU_SUP_AMD */
841 static inline int amd_pmu_init(void)
846 #endif /* CONFIG_CPU_SUP_AMD */
848 #ifdef CONFIG_CPU_SUP_INTEL
850 static inline bool intel_pmu_has_bts(struct perf_event *event)
852 if (event->attr.config == PERF_COUNT_HW_BRANCH_INSTRUCTIONS &&
853 !event->attr.freq && event->hw.sample_period == 1)
859 int intel_pmu_save_and_restart(struct perf_event *event);
861 struct event_constraint *
862 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
863 struct perf_event *event);
865 struct intel_shared_regs *allocate_shared_regs(int cpu);
867 int intel_pmu_init(void);
869 void init_debug_store_on_cpu(int cpu);
871 void fini_debug_store_on_cpu(int cpu);
873 void release_ds_buffers(void);
875 void reserve_ds_buffers(void);
877 extern struct event_constraint bts_constraint;
879 void intel_pmu_enable_bts(u64 config);
881 void intel_pmu_disable_bts(void);
883 int intel_pmu_drain_bts_buffer(void);
885 extern struct event_constraint intel_core2_pebs_event_constraints[];
887 extern struct event_constraint intel_atom_pebs_event_constraints[];
889 extern struct event_constraint intel_slm_pebs_event_constraints[];
891 extern struct event_constraint intel_glm_pebs_event_constraints[];
893 extern struct event_constraint intel_glp_pebs_event_constraints[];
895 extern struct event_constraint intel_nehalem_pebs_event_constraints[];
897 extern struct event_constraint intel_westmere_pebs_event_constraints[];
899 extern struct event_constraint intel_snb_pebs_event_constraints[];
901 extern struct event_constraint intel_ivb_pebs_event_constraints[];
903 extern struct event_constraint intel_hsw_pebs_event_constraints[];
905 extern struct event_constraint intel_bdw_pebs_event_constraints[];
907 extern struct event_constraint intel_skl_pebs_event_constraints[];
909 struct event_constraint *intel_pebs_constraints(struct perf_event *event);
911 void intel_pmu_pebs_add(struct perf_event *event);
913 void intel_pmu_pebs_del(struct perf_event *event);
915 void intel_pmu_pebs_enable(struct perf_event *event);
917 void intel_pmu_pebs_disable(struct perf_event *event);
919 void intel_pmu_pebs_enable_all(void);
921 void intel_pmu_pebs_disable_all(void);
923 void intel_pmu_pebs_sched_task(struct perf_event_context *ctx, bool sched_in);
925 void intel_ds_init(void);
927 void intel_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in);
929 u64 lbr_from_signext_quirk_wr(u64 val);
931 void intel_pmu_lbr_reset(void);
933 void intel_pmu_lbr_add(struct perf_event *event);
935 void intel_pmu_lbr_del(struct perf_event *event);
937 void intel_pmu_lbr_enable_all(bool pmi);
939 void intel_pmu_lbr_disable_all(void);
941 void intel_pmu_lbr_read(void);
943 void intel_pmu_lbr_init_core(void);
945 void intel_pmu_lbr_init_nhm(void);
947 void intel_pmu_lbr_init_atom(void);
949 void intel_pmu_lbr_init_slm(void);
951 void intel_pmu_lbr_init_snb(void);
953 void intel_pmu_lbr_init_hsw(void);
955 void intel_pmu_lbr_init_skl(void);
957 void intel_pmu_lbr_init_knl(void);
959 void intel_pmu_pebs_data_source_nhm(void);
961 void intel_pmu_pebs_data_source_skl(bool pmem);
963 int intel_pmu_setup_lbr_filter(struct perf_event *event);
965 void intel_pt_interrupt(void);
967 int intel_bts_interrupt(void);
969 void intel_bts_enable_local(void);
971 void intel_bts_disable_local(void);
973 int p4_pmu_init(void);
975 int p6_pmu_init(void);
977 int knc_pmu_init(void);
979 static inline int is_ht_workaround_enabled(void)
981 return !!(x86_pmu.flags & PMU_FL_EXCL_ENABLED);
984 #else /* CONFIG_CPU_SUP_INTEL */
986 static inline void reserve_ds_buffers(void)
990 static inline void release_ds_buffers(void)
994 static inline int intel_pmu_init(void)
999 static inline struct intel_shared_regs *allocate_shared_regs(int cpu)
1004 static inline int is_ht_workaround_enabled(void)
1008 #endif /* CONFIG_CPU_SUP_INTEL */