Merge branch 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / arch / x86 / events / perf_event.h
1 /*
2  * Performance events x86 architecture header
3  *
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
11  *
12  *  For licencing details see kernel-base/COPYING
13  */
14
15 #include <linux/perf_event.h>
16
17 #include <asm/fpu/xstate.h>
18 #include <asm/intel_ds.h>
19 #include <asm/cpu.h>
20
21 /* To enable MSR tracing please use the generic trace points. */
22
23 /*
24  *          |   NHM/WSM    |      SNB     |
25  * register -------------------------------
26  *          |  HT  | no HT |  HT  | no HT |
27  *-----------------------------------------
28  * offcore  | core | core  | cpu  | core  |
29  * lbr_sel  | core | core  | cpu  | core  |
30  * ld_lat   | cpu  | core  | cpu  | core  |
31  *-----------------------------------------
32  *
33  * Given that there is a small number of shared regs,
34  * we can pre-allocate their slot in the per-cpu
35  * per-core reg tables.
36  */
37 enum extra_reg_type {
38         EXTRA_REG_NONE  = -1,   /* not used */
39
40         EXTRA_REG_RSP_0 = 0,    /* offcore_response_0 */
41         EXTRA_REG_RSP_1 = 1,    /* offcore_response_1 */
42         EXTRA_REG_LBR   = 2,    /* lbr_select */
43         EXTRA_REG_LDLAT = 3,    /* ld_lat_threshold */
44         EXTRA_REG_FE    = 4,    /* fe_* */
45
46         EXTRA_REG_MAX           /* number of entries needed */
47 };
48
49 struct event_constraint {
50         union {
51                 unsigned long   idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
52                 u64             idxmsk64;
53         };
54         u64             code;
55         u64             cmask;
56         int             weight;
57         int             overlap;
58         int             flags;
59         unsigned int    size;
60 };
61
62 static inline bool constraint_match(struct event_constraint *c, u64 ecode)
63 {
64         return ((ecode & c->cmask) - c->code) <= (u64)c->size;
65 }
66
67 /*
68  * struct hw_perf_event.flags flags
69  */
70 #define PERF_X86_EVENT_PEBS_LDLAT       0x0001 /* ld+ldlat data address sampling */
71 #define PERF_X86_EVENT_PEBS_ST          0x0002 /* st data address sampling */
72 #define PERF_X86_EVENT_PEBS_ST_HSW      0x0004 /* haswell style datala, store */
73 #define PERF_X86_EVENT_PEBS_LD_HSW      0x0008 /* haswell style datala, load */
74 #define PERF_X86_EVENT_PEBS_NA_HSW      0x0010 /* haswell style datala, unknown */
75 #define PERF_X86_EVENT_EXCL             0x0020 /* HT exclusivity on counter */
76 #define PERF_X86_EVENT_DYNAMIC          0x0040 /* dynamic alloc'd constraint */
77
78 #define PERF_X86_EVENT_EXCL_ACCT        0x0100 /* accounted EXCL event */
79 #define PERF_X86_EVENT_AUTO_RELOAD      0x0200 /* use PEBS auto-reload */
80 #define PERF_X86_EVENT_LARGE_PEBS       0x0400 /* use large PEBS */
81 #define PERF_X86_EVENT_PEBS_VIA_PT      0x0800 /* use PT buffer for PEBS */
82 #define PERF_X86_EVENT_PAIR             0x1000 /* Large Increment per Cycle */
83 #define PERF_X86_EVENT_LBR_SELECT       0x2000 /* Save/Restore MSR_LBR_SELECT */
84 #define PERF_X86_EVENT_TOPDOWN          0x4000 /* Count Topdown slots/metrics events */
85 #define PERF_X86_EVENT_PEBS_STLAT       0x8000 /* st+stlat data address sampling */
86
87 static inline bool is_topdown_count(struct perf_event *event)
88 {
89         return event->hw.flags & PERF_X86_EVENT_TOPDOWN;
90 }
91
92 static inline bool is_metric_event(struct perf_event *event)
93 {
94         u64 config = event->attr.config;
95
96         return ((config & ARCH_PERFMON_EVENTSEL_EVENT) == 0) &&
97                 ((config & INTEL_ARCH_EVENT_MASK) >= INTEL_TD_METRIC_RETIRING)  &&
98                 ((config & INTEL_ARCH_EVENT_MASK) <= INTEL_TD_METRIC_MAX);
99 }
100
101 static inline bool is_slots_event(struct perf_event *event)
102 {
103         return (event->attr.config & INTEL_ARCH_EVENT_MASK) == INTEL_TD_SLOTS;
104 }
105
106 static inline bool is_topdown_event(struct perf_event *event)
107 {
108         return is_metric_event(event) || is_slots_event(event);
109 }
110
111 struct amd_nb {
112         int nb_id;  /* NorthBridge id */
113         int refcnt; /* reference count */
114         struct perf_event *owners[X86_PMC_IDX_MAX];
115         struct event_constraint event_constraints[X86_PMC_IDX_MAX];
116 };
117
118 #define PEBS_COUNTER_MASK       ((1ULL << MAX_PEBS_EVENTS) - 1)
119 #define PEBS_PMI_AFTER_EACH_RECORD BIT_ULL(60)
120 #define PEBS_OUTPUT_OFFSET      61
121 #define PEBS_OUTPUT_MASK        (3ull << PEBS_OUTPUT_OFFSET)
122 #define PEBS_OUTPUT_PT          (1ull << PEBS_OUTPUT_OFFSET)
123 #define PEBS_VIA_PT_MASK        (PEBS_OUTPUT_PT | PEBS_PMI_AFTER_EACH_RECORD)
124
125 /*
126  * Flags PEBS can handle without an PMI.
127  *
128  * TID can only be handled by flushing at context switch.
129  * REGS_USER can be handled for events limited to ring 3.
130  *
131  */
132 #define LARGE_PEBS_FLAGS \
133         (PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_ADDR | \
134         PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_STREAM_ID | \
135         PERF_SAMPLE_DATA_SRC | PERF_SAMPLE_IDENTIFIER | \
136         PERF_SAMPLE_TRANSACTION | PERF_SAMPLE_PHYS_ADDR | \
137         PERF_SAMPLE_REGS_INTR | PERF_SAMPLE_REGS_USER | \
138         PERF_SAMPLE_PERIOD | PERF_SAMPLE_CODE_PAGE_SIZE)
139
140 #define PEBS_GP_REGS                    \
141         ((1ULL << PERF_REG_X86_AX)    | \
142          (1ULL << PERF_REG_X86_BX)    | \
143          (1ULL << PERF_REG_X86_CX)    | \
144          (1ULL << PERF_REG_X86_DX)    | \
145          (1ULL << PERF_REG_X86_DI)    | \
146          (1ULL << PERF_REG_X86_SI)    | \
147          (1ULL << PERF_REG_X86_SP)    | \
148          (1ULL << PERF_REG_X86_BP)    | \
149          (1ULL << PERF_REG_X86_IP)    | \
150          (1ULL << PERF_REG_X86_FLAGS) | \
151          (1ULL << PERF_REG_X86_R8)    | \
152          (1ULL << PERF_REG_X86_R9)    | \
153          (1ULL << PERF_REG_X86_R10)   | \
154          (1ULL << PERF_REG_X86_R11)   | \
155          (1ULL << PERF_REG_X86_R12)   | \
156          (1ULL << PERF_REG_X86_R13)   | \
157          (1ULL << PERF_REG_X86_R14)   | \
158          (1ULL << PERF_REG_X86_R15))
159
160 /*
161  * Per register state.
162  */
163 struct er_account {
164         raw_spinlock_t      lock;       /* per-core: protect structure */
165         u64                 config;     /* extra MSR config */
166         u64                 reg;        /* extra MSR number */
167         atomic_t            ref;        /* reference count */
168 };
169
170 /*
171  * Per core/cpu state
172  *
173  * Used to coordinate shared registers between HT threads or
174  * among events on a single PMU.
175  */
176 struct intel_shared_regs {
177         struct er_account       regs[EXTRA_REG_MAX];
178         int                     refcnt;         /* per-core: #HT threads */
179         unsigned                core_id;        /* per-core: core id */
180 };
181
182 enum intel_excl_state_type {
183         INTEL_EXCL_UNUSED    = 0, /* counter is unused */
184         INTEL_EXCL_SHARED    = 1, /* counter can be used by both threads */
185         INTEL_EXCL_EXCLUSIVE = 2, /* counter can be used by one thread only */
186 };
187
188 struct intel_excl_states {
189         enum intel_excl_state_type state[X86_PMC_IDX_MAX];
190         bool sched_started; /* true if scheduling has started */
191 };
192
193 struct intel_excl_cntrs {
194         raw_spinlock_t  lock;
195
196         struct intel_excl_states states[2];
197
198         union {
199                 u16     has_exclusive[2];
200                 u32     exclusive_present;
201         };
202
203         int             refcnt;         /* per-core: #HT threads */
204         unsigned        core_id;        /* per-core: core id */
205 };
206
207 struct x86_perf_task_context;
208 #define MAX_LBR_ENTRIES         32
209
210 enum {
211         LBR_FORMAT_32           = 0x00,
212         LBR_FORMAT_LIP          = 0x01,
213         LBR_FORMAT_EIP          = 0x02,
214         LBR_FORMAT_EIP_FLAGS    = 0x03,
215         LBR_FORMAT_EIP_FLAGS2   = 0x04,
216         LBR_FORMAT_INFO         = 0x05,
217         LBR_FORMAT_TIME         = 0x06,
218         LBR_FORMAT_INFO2        = 0x07,
219         LBR_FORMAT_MAX_KNOWN    = LBR_FORMAT_INFO2,
220 };
221
222 enum {
223         X86_PERF_KFREE_SHARED = 0,
224         X86_PERF_KFREE_EXCL   = 1,
225         X86_PERF_KFREE_MAX
226 };
227
228 struct cpu_hw_events {
229         /*
230          * Generic x86 PMC bits
231          */
232         struct perf_event       *events[X86_PMC_IDX_MAX]; /* in counter order */
233         unsigned long           active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
234         unsigned long           dirty[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
235         int                     enabled;
236
237         int                     n_events; /* the # of events in the below arrays */
238         int                     n_added;  /* the # last events in the below arrays;
239                                              they've never been enabled yet */
240         int                     n_txn;    /* the # last events in the below arrays;
241                                              added in the current transaction */
242         int                     n_txn_pair;
243         int                     n_txn_metric;
244         int                     assign[X86_PMC_IDX_MAX]; /* event to counter assignment */
245         u64                     tags[X86_PMC_IDX_MAX];
246
247         struct perf_event       *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
248         struct event_constraint *event_constraint[X86_PMC_IDX_MAX];
249
250         int                     n_excl; /* the number of exclusive events */
251
252         unsigned int            txn_flags;
253         int                     is_fake;
254
255         /*
256          * Intel DebugStore bits
257          */
258         struct debug_store      *ds;
259         void                    *ds_pebs_vaddr;
260         void                    *ds_bts_vaddr;
261         u64                     pebs_enabled;
262         int                     n_pebs;
263         int                     n_large_pebs;
264         int                     n_pebs_via_pt;
265         int                     pebs_output;
266
267         /* Current super set of events hardware configuration */
268         u64                     pebs_data_cfg;
269         u64                     active_pebs_data_cfg;
270         int                     pebs_record_size;
271
272         /*
273          * Intel LBR bits
274          */
275         int                             lbr_users;
276         int                             lbr_pebs_users;
277         struct perf_branch_stack        lbr_stack;
278         struct perf_branch_entry        lbr_entries[MAX_LBR_ENTRIES];
279         union {
280                 struct er_account               *lbr_sel;
281                 struct er_account               *lbr_ctl;
282         };
283         u64                             br_sel;
284         void                            *last_task_ctx;
285         int                             last_log_id;
286         int                             lbr_select;
287         void                            *lbr_xsave;
288
289         /*
290          * Intel host/guest exclude bits
291          */
292         u64                             intel_ctrl_guest_mask;
293         u64                             intel_ctrl_host_mask;
294         struct perf_guest_switch_msr    guest_switch_msrs[X86_PMC_IDX_MAX];
295
296         /*
297          * Intel checkpoint mask
298          */
299         u64                             intel_cp_status;
300
301         /*
302          * manage shared (per-core, per-cpu) registers
303          * used on Intel NHM/WSM/SNB
304          */
305         struct intel_shared_regs        *shared_regs;
306         /*
307          * manage exclusive counter access between hyperthread
308          */
309         struct event_constraint *constraint_list; /* in enable order */
310         struct intel_excl_cntrs         *excl_cntrs;
311         int excl_thread_id; /* 0 or 1 */
312
313         /*
314          * SKL TSX_FORCE_ABORT shadow
315          */
316         u64                             tfa_shadow;
317
318         /*
319          * Perf Metrics
320          */
321         /* number of accepted metrics events */
322         int                             n_metric;
323
324         /*
325          * AMD specific bits
326          */
327         struct amd_nb                   *amd_nb;
328         /* Inverted mask of bits to clear in the perf_ctr ctrl registers */
329         u64                             perf_ctr_virt_mask;
330         int                             n_pair; /* Large increment events */
331
332         void                            *kfree_on_online[X86_PERF_KFREE_MAX];
333
334         struct pmu                      *pmu;
335 };
336
337 #define __EVENT_CONSTRAINT_RANGE(c, e, n, m, w, o, f) { \
338         { .idxmsk64 = (n) },            \
339         .code = (c),                    \
340         .size = (e) - (c),              \
341         .cmask = (m),                   \
342         .weight = (w),                  \
343         .overlap = (o),                 \
344         .flags = f,                     \
345 }
346
347 #define __EVENT_CONSTRAINT(c, n, m, w, o, f) \
348         __EVENT_CONSTRAINT_RANGE(c, c, n, m, w, o, f)
349
350 #define EVENT_CONSTRAINT(c, n, m)       \
351         __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 0, 0)
352
353 /*
354  * The constraint_match() function only works for 'simple' event codes
355  * and not for extended (AMD64_EVENTSEL_EVENT) events codes.
356  */
357 #define EVENT_CONSTRAINT_RANGE(c, e, n, m) \
358         __EVENT_CONSTRAINT_RANGE(c, e, n, m, HWEIGHT(n), 0, 0)
359
360 #define INTEL_EXCLEVT_CONSTRAINT(c, n)  \
361         __EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT, HWEIGHT(n),\
362                            0, PERF_X86_EVENT_EXCL)
363
364 /*
365  * The overlap flag marks event constraints with overlapping counter
366  * masks. This is the case if the counter mask of such an event is not
367  * a subset of any other counter mask of a constraint with an equal or
368  * higher weight, e.g.:
369  *
370  *  c_overlaps = EVENT_CONSTRAINT_OVERLAP(0, 0x09, 0);
371  *  c_another1 = EVENT_CONSTRAINT(0, 0x07, 0);
372  *  c_another2 = EVENT_CONSTRAINT(0, 0x38, 0);
373  *
374  * The event scheduler may not select the correct counter in the first
375  * cycle because it needs to know which subsequent events will be
376  * scheduled. It may fail to schedule the events then. So we set the
377  * overlap flag for such constraints to give the scheduler a hint which
378  * events to select for counter rescheduling.
379  *
380  * Care must be taken as the rescheduling algorithm is O(n!) which
381  * will increase scheduling cycles for an over-committed system
382  * dramatically.  The number of such EVENT_CONSTRAINT_OVERLAP() macros
383  * and its counter masks must be kept at a minimum.
384  */
385 #define EVENT_CONSTRAINT_OVERLAP(c, n, m)       \
386         __EVENT_CONSTRAINT(c, n, m, HWEIGHT(n), 1, 0)
387
388 /*
389  * Constraint on the Event code.
390  */
391 #define INTEL_EVENT_CONSTRAINT(c, n)    \
392         EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT)
393
394 /*
395  * Constraint on a range of Event codes
396  */
397 #define INTEL_EVENT_CONSTRAINT_RANGE(c, e, n)                   \
398         EVENT_CONSTRAINT_RANGE(c, e, n, ARCH_PERFMON_EVENTSEL_EVENT)
399
400 /*
401  * Constraint on the Event code + UMask + fixed-mask
402  *
403  * filter mask to validate fixed counter events.
404  * the following filters disqualify for fixed counters:
405  *  - inv
406  *  - edge
407  *  - cnt-mask
408  *  - in_tx
409  *  - in_tx_checkpointed
410  *  The other filters are supported by fixed counters.
411  *  The any-thread option is supported starting with v3.
412  */
413 #define FIXED_EVENT_FLAGS (X86_RAW_EVENT_MASK|HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)
414 #define FIXED_EVENT_CONSTRAINT(c, n)    \
415         EVENT_CONSTRAINT(c, (1ULL << (32+n)), FIXED_EVENT_FLAGS)
416
417 /*
418  * The special metric counters do not actually exist. They are calculated from
419  * the combination of the FxCtr3 + MSR_PERF_METRICS.
420  *
421  * The special metric counters are mapped to a dummy offset for the scheduler.
422  * The sharing between multiple users of the same metric without multiplexing
423  * is not allowed, even though the hardware supports that in principle.
424  */
425
426 #define METRIC_EVENT_CONSTRAINT(c, n)                                   \
427         EVENT_CONSTRAINT(c, (1ULL << (INTEL_PMC_IDX_METRIC_BASE + n)),  \
428                          INTEL_ARCH_EVENT_MASK)
429
430 /*
431  * Constraint on the Event code + UMask
432  */
433 #define INTEL_UEVENT_CONSTRAINT(c, n)   \
434         EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK)
435
436 /* Constraint on specific umask bit only + event */
437 #define INTEL_UBIT_EVENT_CONSTRAINT(c, n)       \
438         EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|(c))
439
440 /* Like UEVENT_CONSTRAINT, but match flags too */
441 #define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n)     \
442         EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS)
443
444 #define INTEL_EXCLUEVT_CONSTRAINT(c, n) \
445         __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK, \
446                            HWEIGHT(n), 0, PERF_X86_EVENT_EXCL)
447
448 #define INTEL_PLD_CONSTRAINT(c, n)      \
449         __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
450                            HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT)
451
452 #define INTEL_PSD_CONSTRAINT(c, n)      \
453         __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
454                            HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_STLAT)
455
456 #define INTEL_PST_CONSTRAINT(c, n)      \
457         __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
458                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST)
459
460 /* Event constraint, but match on all event flags too. */
461 #define INTEL_FLAGS_EVENT_CONSTRAINT(c, n) \
462         EVENT_CONSTRAINT(c, n, ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS)
463
464 #define INTEL_FLAGS_EVENT_CONSTRAINT_RANGE(c, e, n)                     \
465         EVENT_CONSTRAINT_RANGE(c, e, n, ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS)
466
467 /* Check only flags, but allow all event/umask */
468 #define INTEL_ALL_EVENT_CONSTRAINT(code, n)     \
469         EVENT_CONSTRAINT(code, n, X86_ALL_EVENT_FLAGS)
470
471 /* Check flags and event code, and set the HSW store flag */
472 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_ST(code, n) \
473         __EVENT_CONSTRAINT(code, n,                     \
474                           ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
475                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
476
477 /* Check flags and event code, and set the HSW load flag */
478 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD(code, n) \
479         __EVENT_CONSTRAINT(code, n,                     \
480                           ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
481                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
482
483 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_LD_RANGE(code, end, n) \
484         __EVENT_CONSTRAINT_RANGE(code, end, n,                          \
485                           ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
486                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
487
488 #define INTEL_FLAGS_EVENT_CONSTRAINT_DATALA_XLD(code, n) \
489         __EVENT_CONSTRAINT(code, n,                     \
490                           ARCH_PERFMON_EVENTSEL_EVENT|X86_ALL_EVENT_FLAGS, \
491                           HWEIGHT(n), 0, \
492                           PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
493
494 /* Check flags and event code/umask, and set the HSW store flag */
495 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_ST(code, n) \
496         __EVENT_CONSTRAINT(code, n,                     \
497                           INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
498                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_ST_HSW)
499
500 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XST(code, n) \
501         __EVENT_CONSTRAINT(code, n,                     \
502                           INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
503                           HWEIGHT(n), 0, \
504                           PERF_X86_EVENT_PEBS_ST_HSW|PERF_X86_EVENT_EXCL)
505
506 /* Check flags and event code/umask, and set the HSW load flag */
507 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_LD(code, n) \
508         __EVENT_CONSTRAINT(code, n,                     \
509                           INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
510                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LD_HSW)
511
512 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_XLD(code, n) \
513         __EVENT_CONSTRAINT(code, n,                     \
514                           INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
515                           HWEIGHT(n), 0, \
516                           PERF_X86_EVENT_PEBS_LD_HSW|PERF_X86_EVENT_EXCL)
517
518 /* Check flags and event code/umask, and set the HSW N/A flag */
519 #define INTEL_FLAGS_UEVENT_CONSTRAINT_DATALA_NA(code, n) \
520         __EVENT_CONSTRAINT(code, n,                     \
521                           INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \
522                           HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_NA_HSW)
523
524
525 /*
526  * We define the end marker as having a weight of -1
527  * to enable blacklisting of events using a counter bitmask
528  * of zero and thus a weight of zero.
529  * The end marker has a weight that cannot possibly be
530  * obtained from counting the bits in the bitmask.
531  */
532 #define EVENT_CONSTRAINT_END { .weight = -1 }
533
534 /*
535  * Check for end marker with weight == -1
536  */
537 #define for_each_event_constraint(e, c) \
538         for ((e) = (c); (e)->weight != -1; (e)++)
539
540 /*
541  * Extra registers for specific events.
542  *
543  * Some events need large masks and require external MSRs.
544  * Those extra MSRs end up being shared for all events on
545  * a PMU and sometimes between PMU of sibling HT threads.
546  * In either case, the kernel needs to handle conflicting
547  * accesses to those extra, shared, regs. The data structure
548  * to manage those registers is stored in cpu_hw_event.
549  */
550 struct extra_reg {
551         unsigned int            event;
552         unsigned int            msr;
553         u64                     config_mask;
554         u64                     valid_mask;
555         int                     idx;  /* per_xxx->regs[] reg index */
556         bool                    extra_msr_access;
557 };
558
559 #define EVENT_EXTRA_REG(e, ms, m, vm, i) {      \
560         .event = (e),                   \
561         .msr = (ms),                    \
562         .config_mask = (m),             \
563         .valid_mask = (vm),             \
564         .idx = EXTRA_REG_##i,           \
565         .extra_msr_access = true,       \
566         }
567
568 #define INTEL_EVENT_EXTRA_REG(event, msr, vm, idx)      \
569         EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT, vm, idx)
570
571 #define INTEL_UEVENT_EXTRA_REG(event, msr, vm, idx) \
572         EVENT_EXTRA_REG(event, msr, ARCH_PERFMON_EVENTSEL_EVENT | \
573                         ARCH_PERFMON_EVENTSEL_UMASK, vm, idx)
574
575 #define INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(c) \
576         INTEL_UEVENT_EXTRA_REG(c, \
577                                MSR_PEBS_LD_LAT_THRESHOLD, \
578                                0xffff, \
579                                LDLAT)
580
581 #define EVENT_EXTRA_END EVENT_EXTRA_REG(0, 0, 0, 0, RSP_0)
582
583 union perf_capabilities {
584         struct {
585                 u64     lbr_format:6;
586                 u64     pebs_trap:1;
587                 u64     pebs_arch_reg:1;
588                 u64     pebs_format:4;
589                 u64     smm_freeze:1;
590                 /*
591                  * PMU supports separate counter range for writing
592                  * values > 32bit.
593                  */
594                 u64     full_width_write:1;
595                 u64     pebs_baseline:1;
596                 u64     perf_metrics:1;
597                 u64     pebs_output_pt_available:1;
598                 u64     anythread_deprecated:1;
599         };
600         u64     capabilities;
601 };
602
603 struct x86_pmu_quirk {
604         struct x86_pmu_quirk *next;
605         void (*func)(void);
606 };
607
608 union x86_pmu_config {
609         struct {
610                 u64 event:8,
611                     umask:8,
612                     usr:1,
613                     os:1,
614                     edge:1,
615                     pc:1,
616                     interrupt:1,
617                     __reserved1:1,
618                     en:1,
619                     inv:1,
620                     cmask:8,
621                     event2:4,
622                     __reserved2:4,
623                     go:1,
624                     ho:1;
625         } bits;
626         u64 value;
627 };
628
629 #define X86_CONFIG(args...) ((union x86_pmu_config){.bits = {args}}).value
630
631 enum {
632         x86_lbr_exclusive_lbr,
633         x86_lbr_exclusive_bts,
634         x86_lbr_exclusive_pt,
635         x86_lbr_exclusive_max,
636 };
637
638 struct x86_hybrid_pmu {
639         struct pmu                      pmu;
640         const char                      *name;
641         u8                              cpu_type;
642         cpumask_t                       supported_cpus;
643         union perf_capabilities         intel_cap;
644         u64                             intel_ctrl;
645         int                             max_pebs_events;
646         int                             num_counters;
647         int                             num_counters_fixed;
648         struct event_constraint         unconstrained;
649
650         u64                             hw_cache_event_ids
651                                         [PERF_COUNT_HW_CACHE_MAX]
652                                         [PERF_COUNT_HW_CACHE_OP_MAX]
653                                         [PERF_COUNT_HW_CACHE_RESULT_MAX];
654         u64                             hw_cache_extra_regs
655                                         [PERF_COUNT_HW_CACHE_MAX]
656                                         [PERF_COUNT_HW_CACHE_OP_MAX]
657                                         [PERF_COUNT_HW_CACHE_RESULT_MAX];
658         struct event_constraint         *event_constraints;
659         struct event_constraint         *pebs_constraints;
660         struct extra_reg                *extra_regs;
661
662         unsigned int                    late_ack        :1,
663                                         mid_ack         :1,
664                                         enabled_ack     :1;
665 };
666
667 static __always_inline struct x86_hybrid_pmu *hybrid_pmu(struct pmu *pmu)
668 {
669         return container_of(pmu, struct x86_hybrid_pmu, pmu);
670 }
671
672 extern struct static_key_false perf_is_hybrid;
673 #define is_hybrid()             static_branch_unlikely(&perf_is_hybrid)
674
675 #define hybrid(_pmu, _field)                            \
676 (*({                                                    \
677         typeof(&x86_pmu._field) __Fp = &x86_pmu._field; \
678                                                         \
679         if (is_hybrid() && (_pmu))                      \
680                 __Fp = &hybrid_pmu(_pmu)->_field;       \
681                                                         \
682         __Fp;                                           \
683 }))
684
685 #define hybrid_var(_pmu, _var)                          \
686 (*({                                                    \
687         typeof(&_var) __Fp = &_var;                     \
688                                                         \
689         if (is_hybrid() && (_pmu))                      \
690                 __Fp = &hybrid_pmu(_pmu)->_var;         \
691                                                         \
692         __Fp;                                           \
693 }))
694
695 #define hybrid_bit(_pmu, _field)                        \
696 ({                                                      \
697         bool __Fp = x86_pmu._field;                     \
698                                                         \
699         if (is_hybrid() && (_pmu))                      \
700                 __Fp = hybrid_pmu(_pmu)->_field;        \
701                                                         \
702         __Fp;                                           \
703 })
704
705 enum hybrid_pmu_type {
706         hybrid_big              = 0x40,
707         hybrid_small            = 0x20,
708
709         hybrid_big_small        = hybrid_big | hybrid_small,
710 };
711
712 #define X86_HYBRID_PMU_ATOM_IDX         0
713 #define X86_HYBRID_PMU_CORE_IDX         1
714
715 #define X86_HYBRID_NUM_PMUS             2
716
717 /*
718  * struct x86_pmu - generic x86 pmu
719  */
720 struct x86_pmu {
721         /*
722          * Generic x86 PMC bits
723          */
724         const char      *name;
725         int             version;
726         int             (*handle_irq)(struct pt_regs *);
727         void            (*disable_all)(void);
728         void            (*enable_all)(int added);
729         void            (*enable)(struct perf_event *);
730         void            (*disable)(struct perf_event *);
731         void            (*assign)(struct perf_event *event, int idx);
732         void            (*add)(struct perf_event *);
733         void            (*del)(struct perf_event *);
734         void            (*read)(struct perf_event *event);
735         int             (*hw_config)(struct perf_event *event);
736         int             (*schedule_events)(struct cpu_hw_events *cpuc, int n, int *assign);
737         unsigned        eventsel;
738         unsigned        perfctr;
739         int             (*addr_offset)(int index, bool eventsel);
740         int             (*rdpmc_index)(int index);
741         u64             (*event_map)(int);
742         int             max_events;
743         int             num_counters;
744         int             num_counters_fixed;
745         int             cntval_bits;
746         u64             cntval_mask;
747         union {
748                         unsigned long events_maskl;
749                         unsigned long events_mask[BITS_TO_LONGS(ARCH_PERFMON_EVENTS_COUNT)];
750         };
751         int             events_mask_len;
752         int             apic;
753         u64             max_period;
754         struct event_constraint *
755                         (*get_event_constraints)(struct cpu_hw_events *cpuc,
756                                                  int idx,
757                                                  struct perf_event *event);
758
759         void            (*put_event_constraints)(struct cpu_hw_events *cpuc,
760                                                  struct perf_event *event);
761
762         void            (*start_scheduling)(struct cpu_hw_events *cpuc);
763
764         void            (*commit_scheduling)(struct cpu_hw_events *cpuc, int idx, int cntr);
765
766         void            (*stop_scheduling)(struct cpu_hw_events *cpuc);
767
768         struct event_constraint *event_constraints;
769         struct x86_pmu_quirk *quirks;
770         int             perfctr_second_write;
771         u64             (*limit_period)(struct perf_event *event, u64 l);
772
773         /* PMI handler bits */
774         unsigned int    late_ack                :1,
775                         mid_ack                 :1,
776                         enabled_ack             :1;
777         /*
778          * sysfs attrs
779          */
780         int             attr_rdpmc_broken;
781         int             attr_rdpmc;
782         struct attribute **format_attrs;
783
784         ssize_t         (*events_sysfs_show)(char *page, u64 config);
785         const struct attribute_group **attr_update;
786
787         unsigned long   attr_freeze_on_smi;
788
789         /*
790          * CPU Hotplug hooks
791          */
792         int             (*cpu_prepare)(int cpu);
793         void            (*cpu_starting)(int cpu);
794         void            (*cpu_dying)(int cpu);
795         void            (*cpu_dead)(int cpu);
796
797         void            (*check_microcode)(void);
798         void            (*sched_task)(struct perf_event_context *ctx,
799                                       bool sched_in);
800
801         /*
802          * Intel Arch Perfmon v2+
803          */
804         u64                     intel_ctrl;
805         union perf_capabilities intel_cap;
806
807         /*
808          * Intel DebugStore bits
809          */
810         unsigned int    bts                     :1,
811                         bts_active              :1,
812                         pebs                    :1,
813                         pebs_active             :1,
814                         pebs_broken             :1,
815                         pebs_prec_dist          :1,
816                         pebs_no_tlb             :1,
817                         pebs_no_isolation       :1,
818                         pebs_block              :1;
819         int             pebs_record_size;
820         int             pebs_buffer_size;
821         int             max_pebs_events;
822         void            (*drain_pebs)(struct pt_regs *regs, struct perf_sample_data *data);
823         struct event_constraint *pebs_constraints;
824         void            (*pebs_aliases)(struct perf_event *event);
825         unsigned long   large_pebs_flags;
826         u64             rtm_abort_event;
827
828         /*
829          * Intel LBR
830          */
831         unsigned int    lbr_tos, lbr_from, lbr_to,
832                         lbr_info, lbr_nr;          /* LBR base regs and size */
833         union {
834                 u64     lbr_sel_mask;              /* LBR_SELECT valid bits */
835                 u64     lbr_ctl_mask;              /* LBR_CTL valid bits */
836         };
837         union {
838                 const int       *lbr_sel_map;      /* lbr_select mappings */
839                 int             *lbr_ctl_map;      /* LBR_CTL mappings */
840         };
841         bool            lbr_double_abort;          /* duplicated lbr aborts */
842         bool            lbr_pt_coexist;            /* (LBR|BTS) may coexist with PT */
843
844         unsigned int    lbr_has_info:1;
845         unsigned int    lbr_has_tsx:1;
846         unsigned int    lbr_from_flags:1;
847         unsigned int    lbr_to_cycles:1;
848
849         /*
850          * Intel Architectural LBR CPUID Enumeration
851          */
852         unsigned int    lbr_depth_mask:8;
853         unsigned int    lbr_deep_c_reset:1;
854         unsigned int    lbr_lip:1;
855         unsigned int    lbr_cpl:1;
856         unsigned int    lbr_filter:1;
857         unsigned int    lbr_call_stack:1;
858         unsigned int    lbr_mispred:1;
859         unsigned int    lbr_timed_lbr:1;
860         unsigned int    lbr_br_type:1;
861
862         void            (*lbr_reset)(void);
863         void            (*lbr_read)(struct cpu_hw_events *cpuc);
864         void            (*lbr_save)(void *ctx);
865         void            (*lbr_restore)(void *ctx);
866
867         /*
868          * Intel PT/LBR/BTS are exclusive
869          */
870         atomic_t        lbr_exclusive[x86_lbr_exclusive_max];
871
872         /*
873          * Intel perf metrics
874          */
875         int             num_topdown_events;
876         u64             (*update_topdown_event)(struct perf_event *event);
877         int             (*set_topdown_event_period)(struct perf_event *event);
878
879         /*
880          * perf task context (i.e. struct perf_event_context::task_ctx_data)
881          * switch helper to bridge calls from perf/core to perf/x86.
882          * See struct pmu::swap_task_ctx() usage for examples;
883          */
884         void            (*swap_task_ctx)(struct perf_event_context *prev,
885                                          struct perf_event_context *next);
886
887         /*
888          * AMD bits
889          */
890         unsigned int    amd_nb_constraints : 1;
891         u64             perf_ctr_pair_en;
892
893         /*
894          * Extra registers for events
895          */
896         struct extra_reg *extra_regs;
897         unsigned int flags;
898
899         /*
900          * Intel host/guest support (KVM)
901          */
902         struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr);
903
904         /*
905          * Check period value for PERF_EVENT_IOC_PERIOD ioctl.
906          */
907         int (*check_period) (struct perf_event *event, u64 period);
908
909         int (*aux_output_match) (struct perf_event *event);
910
911         int (*filter_match)(struct perf_event *event);
912         /*
913          * Hybrid support
914          *
915          * Most PMU capabilities are the same among different hybrid PMUs.
916          * The global x86_pmu saves the architecture capabilities, which
917          * are available for all PMUs. The hybrid_pmu only includes the
918          * unique capabilities.
919          */
920         int                             num_hybrid_pmus;
921         struct x86_hybrid_pmu           *hybrid_pmu;
922         u8 (*get_hybrid_cpu_type)       (void);
923 };
924
925 struct x86_perf_task_context_opt {
926         int lbr_callstack_users;
927         int lbr_stack_state;
928         int log_id;
929 };
930
931 struct x86_perf_task_context {
932         u64 lbr_sel;
933         int tos;
934         int valid_lbrs;
935         struct x86_perf_task_context_opt opt;
936         struct lbr_entry lbr[MAX_LBR_ENTRIES];
937 };
938
939 struct x86_perf_task_context_arch_lbr {
940         struct x86_perf_task_context_opt opt;
941         struct lbr_entry entries[];
942 };
943
944 /*
945  * Add padding to guarantee the 64-byte alignment of the state buffer.
946  *
947  * The structure is dynamically allocated. The size of the LBR state may vary
948  * based on the number of LBR registers.
949  *
950  * Do not put anything after the LBR state.
951  */
952 struct x86_perf_task_context_arch_lbr_xsave {
953         struct x86_perf_task_context_opt                opt;
954
955         union {
956                 struct xregs_state                      xsave;
957                 struct {
958                         struct fxregs_state             i387;
959                         struct xstate_header            header;
960                         struct arch_lbr_state           lbr;
961                 } __attribute__ ((packed, aligned (XSAVE_ALIGNMENT)));
962         };
963 };
964
965 #define x86_add_quirk(func_)                                            \
966 do {                                                                    \
967         static struct x86_pmu_quirk __quirk __initdata = {              \
968                 .func = func_,                                          \
969         };                                                              \
970         __quirk.next = x86_pmu.quirks;                                  \
971         x86_pmu.quirks = &__quirk;                                      \
972 } while (0)
973
974 /*
975  * x86_pmu flags
976  */
977 #define PMU_FL_NO_HT_SHARING    0x1 /* no hyper-threading resource sharing */
978 #define PMU_FL_HAS_RSP_1        0x2 /* has 2 equivalent offcore_rsp regs   */
979 #define PMU_FL_EXCL_CNTRS       0x4 /* has exclusive counter requirements  */
980 #define PMU_FL_EXCL_ENABLED     0x8 /* exclusive counter active */
981 #define PMU_FL_PEBS_ALL         0x10 /* all events are valid PEBS events */
982 #define PMU_FL_TFA              0x20 /* deal with TSX force abort */
983 #define PMU_FL_PAIR             0x40 /* merge counters for large incr. events */
984 #define PMU_FL_INSTR_LATENCY    0x80 /* Support Instruction Latency in PEBS Memory Info Record */
985 #define PMU_FL_MEM_LOADS_AUX    0x100 /* Require an auxiliary event for the complete memory info */
986
987 #define EVENT_VAR(_id)  event_attr_##_id
988 #define EVENT_PTR(_id) &event_attr_##_id.attr.attr
989
990 #define EVENT_ATTR(_name, _id)                                          \
991 static struct perf_pmu_events_attr EVENT_VAR(_id) = {                   \
992         .attr           = __ATTR(_name, 0444, events_sysfs_show, NULL), \
993         .id             = PERF_COUNT_HW_##_id,                          \
994         .event_str      = NULL,                                         \
995 };
996
997 #define EVENT_ATTR_STR(_name, v, str)                                   \
998 static struct perf_pmu_events_attr event_attr_##v = {                   \
999         .attr           = __ATTR(_name, 0444, events_sysfs_show, NULL), \
1000         .id             = 0,                                            \
1001         .event_str      = str,                                          \
1002 };
1003
1004 #define EVENT_ATTR_STR_HT(_name, v, noht, ht)                           \
1005 static struct perf_pmu_events_ht_attr event_attr_##v = {                \
1006         .attr           = __ATTR(_name, 0444, events_ht_sysfs_show, NULL),\
1007         .id             = 0,                                            \
1008         .event_str_noht = noht,                                         \
1009         .event_str_ht   = ht,                                           \
1010 }
1011
1012 #define EVENT_ATTR_STR_HYBRID(_name, v, str, _pmu)                      \
1013 static struct perf_pmu_events_hybrid_attr event_attr_##v = {            \
1014         .attr           = __ATTR(_name, 0444, events_hybrid_sysfs_show, NULL),\
1015         .id             = 0,                                            \
1016         .event_str      = str,                                          \
1017         .pmu_type       = _pmu,                                         \
1018 }
1019
1020 #define FORMAT_HYBRID_PTR(_id) (&format_attr_hybrid_##_id.attr.attr)
1021
1022 #define FORMAT_ATTR_HYBRID(_name, _pmu)                                 \
1023 static struct perf_pmu_format_hybrid_attr format_attr_hybrid_##_name = {\
1024         .attr           = __ATTR_RO(_name),                             \
1025         .pmu_type       = _pmu,                                         \
1026 }
1027
1028 struct pmu *x86_get_pmu(unsigned int cpu);
1029 extern struct x86_pmu x86_pmu __read_mostly;
1030
1031 static __always_inline struct x86_perf_task_context_opt *task_context_opt(void *ctx)
1032 {
1033         if (static_cpu_has(X86_FEATURE_ARCH_LBR))
1034                 return &((struct x86_perf_task_context_arch_lbr *)ctx)->opt;
1035
1036         return &((struct x86_perf_task_context *)ctx)->opt;
1037 }
1038
1039 static inline bool x86_pmu_has_lbr_callstack(void)
1040 {
1041         return  x86_pmu.lbr_sel_map &&
1042                 x86_pmu.lbr_sel_map[PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT] > 0;
1043 }
1044
1045 DECLARE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
1046
1047 int x86_perf_event_set_period(struct perf_event *event);
1048
1049 /*
1050  * Generalized hw caching related hw_event table, filled
1051  * in on a per model basis. A value of 0 means
1052  * 'not supported', -1 means 'hw_event makes no sense on
1053  * this CPU', any other value means the raw hw_event
1054  * ID.
1055  */
1056
1057 #define C(x) PERF_COUNT_HW_CACHE_##x
1058
1059 extern u64 __read_mostly hw_cache_event_ids
1060                                 [PERF_COUNT_HW_CACHE_MAX]
1061                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1062                                 [PERF_COUNT_HW_CACHE_RESULT_MAX];
1063 extern u64 __read_mostly hw_cache_extra_regs
1064                                 [PERF_COUNT_HW_CACHE_MAX]
1065                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1066                                 [PERF_COUNT_HW_CACHE_RESULT_MAX];
1067
1068 u64 x86_perf_event_update(struct perf_event *event);
1069
1070 static inline unsigned int x86_pmu_config_addr(int index)
1071 {
1072         return x86_pmu.eventsel + (x86_pmu.addr_offset ?
1073                                    x86_pmu.addr_offset(index, true) : index);
1074 }
1075
1076 static inline unsigned int x86_pmu_event_addr(int index)
1077 {
1078         return x86_pmu.perfctr + (x86_pmu.addr_offset ?
1079                                   x86_pmu.addr_offset(index, false) : index);
1080 }
1081
1082 static inline int x86_pmu_rdpmc_index(int index)
1083 {
1084         return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index;
1085 }
1086
1087 bool check_hw_exists(struct pmu *pmu, int num_counters,
1088                      int num_counters_fixed);
1089
1090 int x86_add_exclusive(unsigned int what);
1091
1092 void x86_del_exclusive(unsigned int what);
1093
1094 int x86_reserve_hardware(void);
1095
1096 void x86_release_hardware(void);
1097
1098 int x86_pmu_max_precise(void);
1099
1100 void hw_perf_lbr_event_destroy(struct perf_event *event);
1101
1102 int x86_setup_perfctr(struct perf_event *event);
1103
1104 int x86_pmu_hw_config(struct perf_event *event);
1105
1106 void x86_pmu_disable_all(void);
1107
1108 static inline bool is_counter_pair(struct hw_perf_event *hwc)
1109 {
1110         return hwc->flags & PERF_X86_EVENT_PAIR;
1111 }
1112
1113 static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
1114                                           u64 enable_mask)
1115 {
1116         u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
1117
1118         if (hwc->extra_reg.reg)
1119                 wrmsrl(hwc->extra_reg.reg, hwc->extra_reg.config);
1120
1121         /*
1122          * Add enabled Merge event on next counter
1123          * if large increment event being enabled on this counter
1124          */
1125         if (is_counter_pair(hwc))
1126                 wrmsrl(x86_pmu_config_addr(hwc->idx + 1), x86_pmu.perf_ctr_pair_en);
1127
1128         wrmsrl(hwc->config_base, (hwc->config | enable_mask) & ~disable_mask);
1129 }
1130
1131 void x86_pmu_enable_all(int added);
1132
1133 int perf_assign_events(struct event_constraint **constraints, int n,
1134                         int wmin, int wmax, int gpmax, int *assign);
1135 int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign);
1136
1137 void x86_pmu_stop(struct perf_event *event, int flags);
1138
1139 static inline void x86_pmu_disable_event(struct perf_event *event)
1140 {
1141         u64 disable_mask = __this_cpu_read(cpu_hw_events.perf_ctr_virt_mask);
1142         struct hw_perf_event *hwc = &event->hw;
1143
1144         wrmsrl(hwc->config_base, hwc->config & ~disable_mask);
1145
1146         if (is_counter_pair(hwc))
1147                 wrmsrl(x86_pmu_config_addr(hwc->idx + 1), 0);
1148 }
1149
1150 void x86_pmu_enable_event(struct perf_event *event);
1151
1152 int x86_pmu_handle_irq(struct pt_regs *regs);
1153
1154 void x86_pmu_show_pmu_cap(int num_counters, int num_counters_fixed,
1155                           u64 intel_ctrl);
1156
1157 void x86_pmu_update_cpu_context(struct pmu *pmu, int cpu);
1158
1159 extern struct event_constraint emptyconstraint;
1160
1161 extern struct event_constraint unconstrained;
1162
1163 static inline bool kernel_ip(unsigned long ip)
1164 {
1165 #ifdef CONFIG_X86_32
1166         return ip > PAGE_OFFSET;
1167 #else
1168         return (long)ip < 0;
1169 #endif
1170 }
1171
1172 /*
1173  * Not all PMUs provide the right context information to place the reported IP
1174  * into full context. Specifically segment registers are typically not
1175  * supplied.
1176  *
1177  * Assuming the address is a linear address (it is for IBS), we fake the CS and
1178  * vm86 mode using the known zero-based code segment and 'fix up' the registers
1179  * to reflect this.
1180  *
1181  * Intel PEBS/LBR appear to typically provide the effective address, nothing
1182  * much we can do about that but pray and treat it like a linear address.
1183  */
1184 static inline void set_linear_ip(struct pt_regs *regs, unsigned long ip)
1185 {
1186         regs->cs = kernel_ip(ip) ? __KERNEL_CS : __USER_CS;
1187         if (regs->flags & X86_VM_MASK)
1188                 regs->flags ^= (PERF_EFLAGS_VM | X86_VM_MASK);
1189         regs->ip = ip;
1190 }
1191
1192 ssize_t x86_event_sysfs_show(char *page, u64 config, u64 event);
1193 ssize_t intel_event_sysfs_show(char *page, u64 config);
1194
1195 ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr,
1196                           char *page);
1197 ssize_t events_ht_sysfs_show(struct device *dev, struct device_attribute *attr,
1198                           char *page);
1199 ssize_t events_hybrid_sysfs_show(struct device *dev,
1200                                  struct device_attribute *attr,
1201                                  char *page);
1202
1203 static inline bool fixed_counter_disabled(int i, struct pmu *pmu)
1204 {
1205         u64 intel_ctrl = hybrid(pmu, intel_ctrl);
1206
1207         return !(intel_ctrl >> (i + INTEL_PMC_IDX_FIXED));
1208 }
1209
1210 #ifdef CONFIG_CPU_SUP_AMD
1211
1212 int amd_pmu_init(void);
1213
1214 #else /* CONFIG_CPU_SUP_AMD */
1215
1216 static inline int amd_pmu_init(void)
1217 {
1218         return 0;
1219 }
1220
1221 #endif /* CONFIG_CPU_SUP_AMD */
1222
1223 static inline int is_pebs_pt(struct perf_event *event)
1224 {
1225         return !!(event->hw.flags & PERF_X86_EVENT_PEBS_VIA_PT);
1226 }
1227
1228 #ifdef CONFIG_CPU_SUP_INTEL
1229
1230 static inline bool intel_pmu_has_bts_period(struct perf_event *event, u64 period)
1231 {
1232         struct hw_perf_event *hwc = &event->hw;
1233         unsigned int hw_event, bts_event;
1234
1235         if (event->attr.freq)
1236                 return false;
1237
1238         hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
1239         bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1240
1241         return hw_event == bts_event && period == 1;
1242 }
1243
1244 static inline bool intel_pmu_has_bts(struct perf_event *event)
1245 {
1246         struct hw_perf_event *hwc = &event->hw;
1247
1248         return intel_pmu_has_bts_period(event, hwc->sample_period);
1249 }
1250
1251 static __always_inline void __intel_pmu_pebs_disable_all(void)
1252 {
1253         wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
1254 }
1255
1256 static __always_inline void __intel_pmu_arch_lbr_disable(void)
1257 {
1258         wrmsrl(MSR_ARCH_LBR_CTL, 0);
1259 }
1260
1261 static __always_inline void __intel_pmu_lbr_disable(void)
1262 {
1263         u64 debugctl;
1264
1265         rdmsrl(MSR_IA32_DEBUGCTLMSR, debugctl);
1266         debugctl &= ~(DEBUGCTLMSR_LBR | DEBUGCTLMSR_FREEZE_LBRS_ON_PMI);
1267         wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctl);
1268 }
1269
1270 int intel_pmu_save_and_restart(struct perf_event *event);
1271
1272 struct event_constraint *
1273 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1274                           struct perf_event *event);
1275
1276 extern int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu);
1277 extern void intel_cpuc_finish(struct cpu_hw_events *cpuc);
1278
1279 int intel_pmu_init(void);
1280
1281 void init_debug_store_on_cpu(int cpu);
1282
1283 void fini_debug_store_on_cpu(int cpu);
1284
1285 void release_ds_buffers(void);
1286
1287 void reserve_ds_buffers(void);
1288
1289 void release_lbr_buffers(void);
1290
1291 void reserve_lbr_buffers(void);
1292
1293 extern struct event_constraint bts_constraint;
1294 extern struct event_constraint vlbr_constraint;
1295
1296 void intel_pmu_enable_bts(u64 config);
1297
1298 void intel_pmu_disable_bts(void);
1299
1300 int intel_pmu_drain_bts_buffer(void);
1301
1302 extern struct event_constraint intel_core2_pebs_event_constraints[];
1303
1304 extern struct event_constraint intel_atom_pebs_event_constraints[];
1305
1306 extern struct event_constraint intel_slm_pebs_event_constraints[];
1307
1308 extern struct event_constraint intel_glm_pebs_event_constraints[];
1309
1310 extern struct event_constraint intel_glp_pebs_event_constraints[];
1311
1312 extern struct event_constraint intel_grt_pebs_event_constraints[];
1313
1314 extern struct event_constraint intel_nehalem_pebs_event_constraints[];
1315
1316 extern struct event_constraint intel_westmere_pebs_event_constraints[];
1317
1318 extern struct event_constraint intel_snb_pebs_event_constraints[];
1319
1320 extern struct event_constraint intel_ivb_pebs_event_constraints[];
1321
1322 extern struct event_constraint intel_hsw_pebs_event_constraints[];
1323
1324 extern struct event_constraint intel_bdw_pebs_event_constraints[];
1325
1326 extern struct event_constraint intel_skl_pebs_event_constraints[];
1327
1328 extern struct event_constraint intel_icl_pebs_event_constraints[];
1329
1330 extern struct event_constraint intel_spr_pebs_event_constraints[];
1331
1332 struct event_constraint *intel_pebs_constraints(struct perf_event *event);
1333
1334 void intel_pmu_pebs_add(struct perf_event *event);
1335
1336 void intel_pmu_pebs_del(struct perf_event *event);
1337
1338 void intel_pmu_pebs_enable(struct perf_event *event);
1339
1340 void intel_pmu_pebs_disable(struct perf_event *event);
1341
1342 void intel_pmu_pebs_enable_all(void);
1343
1344 void intel_pmu_pebs_disable_all(void);
1345
1346 void intel_pmu_pebs_sched_task(struct perf_event_context *ctx, bool sched_in);
1347
1348 void intel_pmu_auto_reload_read(struct perf_event *event);
1349
1350 void intel_pmu_store_pebs_lbrs(struct lbr_entry *lbr);
1351
1352 void intel_ds_init(void);
1353
1354 void intel_pmu_lbr_swap_task_ctx(struct perf_event_context *prev,
1355                                  struct perf_event_context *next);
1356
1357 void intel_pmu_lbr_sched_task(struct perf_event_context *ctx, bool sched_in);
1358
1359 u64 lbr_from_signext_quirk_wr(u64 val);
1360
1361 void intel_pmu_lbr_reset(void);
1362
1363 void intel_pmu_lbr_reset_32(void);
1364
1365 void intel_pmu_lbr_reset_64(void);
1366
1367 void intel_pmu_lbr_add(struct perf_event *event);
1368
1369 void intel_pmu_lbr_del(struct perf_event *event);
1370
1371 void intel_pmu_lbr_enable_all(bool pmi);
1372
1373 void intel_pmu_lbr_disable_all(void);
1374
1375 void intel_pmu_lbr_read(void);
1376
1377 void intel_pmu_lbr_read_32(struct cpu_hw_events *cpuc);
1378
1379 void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc);
1380
1381 void intel_pmu_lbr_save(void *ctx);
1382
1383 void intel_pmu_lbr_restore(void *ctx);
1384
1385 void intel_pmu_lbr_init_core(void);
1386
1387 void intel_pmu_lbr_init_nhm(void);
1388
1389 void intel_pmu_lbr_init_atom(void);
1390
1391 void intel_pmu_lbr_init_slm(void);
1392
1393 void intel_pmu_lbr_init_snb(void);
1394
1395 void intel_pmu_lbr_init_hsw(void);
1396
1397 void intel_pmu_lbr_init_skl(void);
1398
1399 void intel_pmu_lbr_init_knl(void);
1400
1401 void intel_pmu_lbr_init(void);
1402
1403 void intel_pmu_arch_lbr_init(void);
1404
1405 void intel_pmu_pebs_data_source_nhm(void);
1406
1407 void intel_pmu_pebs_data_source_skl(bool pmem);
1408
1409 int intel_pmu_setup_lbr_filter(struct perf_event *event);
1410
1411 void intel_pt_interrupt(void);
1412
1413 int intel_bts_interrupt(void);
1414
1415 void intel_bts_enable_local(void);
1416
1417 void intel_bts_disable_local(void);
1418
1419 int p4_pmu_init(void);
1420
1421 int p6_pmu_init(void);
1422
1423 int knc_pmu_init(void);
1424
1425 static inline int is_ht_workaround_enabled(void)
1426 {
1427         return !!(x86_pmu.flags & PMU_FL_EXCL_ENABLED);
1428 }
1429
1430 #else /* CONFIG_CPU_SUP_INTEL */
1431
1432 static inline void reserve_ds_buffers(void)
1433 {
1434 }
1435
1436 static inline void release_ds_buffers(void)
1437 {
1438 }
1439
1440 static inline void release_lbr_buffers(void)
1441 {
1442 }
1443
1444 static inline void reserve_lbr_buffers(void)
1445 {
1446 }
1447
1448 static inline int intel_pmu_init(void)
1449 {
1450         return 0;
1451 }
1452
1453 static inline int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
1454 {
1455         return 0;
1456 }
1457
1458 static inline void intel_cpuc_finish(struct cpu_hw_events *cpuc)
1459 {
1460 }
1461
1462 static inline int is_ht_workaround_enabled(void)
1463 {
1464         return 0;
1465 }
1466 #endif /* CONFIG_CPU_SUP_INTEL */
1467
1468 #if ((defined CONFIG_CPU_SUP_CENTAUR) || (defined CONFIG_CPU_SUP_ZHAOXIN))
1469 int zhaoxin_pmu_init(void);
1470 #else
1471 static inline int zhaoxin_pmu_init(void)
1472 {
1473         return 0;
1474 }
1475 #endif /*CONFIG_CPU_SUP_CENTAUR or CONFIG_CPU_SUP_ZHAOXIN*/