1 #ifdef CONFIG_CPU_SUP_INTEL
4 * Intel PerfMon, used on Core and later.
6 static const u64 intel_perfmon_event_map[] =
8 [PERF_COUNT_HW_CPU_CYCLES] = 0x003c,
9 [PERF_COUNT_HW_INSTRUCTIONS] = 0x00c0,
10 [PERF_COUNT_HW_CACHE_REFERENCES] = 0x4f2e,
11 [PERF_COUNT_HW_CACHE_MISSES] = 0x412e,
12 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x00c4,
13 [PERF_COUNT_HW_BRANCH_MISSES] = 0x00c5,
14 [PERF_COUNT_HW_BUS_CYCLES] = 0x013c,
17 static struct event_constraint intel_core_event_constraints[] =
19 INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
20 INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
21 INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
22 INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
23 INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
24 INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
28 static struct event_constraint intel_core2_event_constraints[] =
30 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
31 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
33 * Core2 has Fixed Counter 2 listed as CPU_CLK_UNHALTED.REF and event
34 * 0x013c as CPU_CLK_UNHALTED.BUS and specifies there is a fixed
35 * ratio between these counters.
37 /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */
38 INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
39 INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
40 INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
41 INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
42 INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
43 INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
44 INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
45 INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
46 INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
47 INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
51 static struct event_constraint intel_nehalem_event_constraints[] =
53 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
54 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
55 /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */
56 INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
57 INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
58 INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
59 INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
60 INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
61 INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
62 INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
63 INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
67 static struct event_constraint intel_westmere_event_constraints[] =
69 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
70 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
71 /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */
72 INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
73 INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
74 INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
78 static struct event_constraint intel_gen_event_constraints[] =
80 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
81 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
82 /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */
86 static u64 intel_pmu_event_map(int hw_event)
88 return intel_perfmon_event_map[hw_event];
91 static __initconst const u64 westmere_hw_cache_event_ids
92 [PERF_COUNT_HW_CACHE_MAX]
93 [PERF_COUNT_HW_CACHE_OP_MAX]
94 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
98 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
99 [ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
102 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
103 [ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
105 [ C(OP_PREFETCH) ] = {
106 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
107 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
112 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
113 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
116 [ C(RESULT_ACCESS) ] = -1,
117 [ C(RESULT_MISS) ] = -1,
119 [ C(OP_PREFETCH) ] = {
120 [ C(RESULT_ACCESS) ] = 0x0,
121 [ C(RESULT_MISS) ] = 0x0,
126 [ C(RESULT_ACCESS) ] = 0x0324, /* L2_RQSTS.LOADS */
127 [ C(RESULT_MISS) ] = 0x0224, /* L2_RQSTS.LD_MISS */
130 [ C(RESULT_ACCESS) ] = 0x0c24, /* L2_RQSTS.RFOS */
131 [ C(RESULT_MISS) ] = 0x0824, /* L2_RQSTS.RFO_MISS */
133 [ C(OP_PREFETCH) ] = {
134 [ C(RESULT_ACCESS) ] = 0x4f2e, /* LLC Reference */
135 [ C(RESULT_MISS) ] = 0x412e, /* LLC Misses */
140 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
141 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
144 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
145 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
147 [ C(OP_PREFETCH) ] = {
148 [ C(RESULT_ACCESS) ] = 0x0,
149 [ C(RESULT_MISS) ] = 0x0,
154 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
155 [ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.ANY */
158 [ C(RESULT_ACCESS) ] = -1,
159 [ C(RESULT_MISS) ] = -1,
161 [ C(OP_PREFETCH) ] = {
162 [ C(RESULT_ACCESS) ] = -1,
163 [ C(RESULT_MISS) ] = -1,
168 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
169 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
172 [ C(RESULT_ACCESS) ] = -1,
173 [ C(RESULT_MISS) ] = -1,
175 [ C(OP_PREFETCH) ] = {
176 [ C(RESULT_ACCESS) ] = -1,
177 [ C(RESULT_MISS) ] = -1,
182 static __initconst const u64 nehalem_hw_cache_event_ids
183 [PERF_COUNT_HW_CACHE_MAX]
184 [PERF_COUNT_HW_CACHE_OP_MAX]
185 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
189 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
190 [ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
193 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
194 [ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
196 [ C(OP_PREFETCH) ] = {
197 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
198 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
203 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
204 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
207 [ C(RESULT_ACCESS) ] = -1,
208 [ C(RESULT_MISS) ] = -1,
210 [ C(OP_PREFETCH) ] = {
211 [ C(RESULT_ACCESS) ] = 0x0,
212 [ C(RESULT_MISS) ] = 0x0,
217 [ C(RESULT_ACCESS) ] = 0x0324, /* L2_RQSTS.LOADS */
218 [ C(RESULT_MISS) ] = 0x0224, /* L2_RQSTS.LD_MISS */
221 [ C(RESULT_ACCESS) ] = 0x0c24, /* L2_RQSTS.RFOS */
222 [ C(RESULT_MISS) ] = 0x0824, /* L2_RQSTS.RFO_MISS */
224 [ C(OP_PREFETCH) ] = {
225 [ C(RESULT_ACCESS) ] = 0x4f2e, /* LLC Reference */
226 [ C(RESULT_MISS) ] = 0x412e, /* LLC Misses */
231 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
232 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
235 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
236 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
238 [ C(OP_PREFETCH) ] = {
239 [ C(RESULT_ACCESS) ] = 0x0,
240 [ C(RESULT_MISS) ] = 0x0,
245 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
246 [ C(RESULT_MISS) ] = 0x20c8, /* ITLB_MISS_RETIRED */
249 [ C(RESULT_ACCESS) ] = -1,
250 [ C(RESULT_MISS) ] = -1,
252 [ C(OP_PREFETCH) ] = {
253 [ C(RESULT_ACCESS) ] = -1,
254 [ C(RESULT_MISS) ] = -1,
259 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
260 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
263 [ C(RESULT_ACCESS) ] = -1,
264 [ C(RESULT_MISS) ] = -1,
266 [ C(OP_PREFETCH) ] = {
267 [ C(RESULT_ACCESS) ] = -1,
268 [ C(RESULT_MISS) ] = -1,
273 static __initconst const u64 core2_hw_cache_event_ids
274 [PERF_COUNT_HW_CACHE_MAX]
275 [PERF_COUNT_HW_CACHE_OP_MAX]
276 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
280 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
281 [ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
284 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
285 [ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
287 [ C(OP_PREFETCH) ] = {
288 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS */
289 [ C(RESULT_MISS) ] = 0,
294 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS */
295 [ C(RESULT_MISS) ] = 0x0081, /* L1I.MISSES */
298 [ C(RESULT_ACCESS) ] = -1,
299 [ C(RESULT_MISS) ] = -1,
301 [ C(OP_PREFETCH) ] = {
302 [ C(RESULT_ACCESS) ] = 0,
303 [ C(RESULT_MISS) ] = 0,
308 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
309 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
312 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
313 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
315 [ C(OP_PREFETCH) ] = {
316 [ C(RESULT_ACCESS) ] = 0,
317 [ C(RESULT_MISS) ] = 0,
322 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
323 [ C(RESULT_MISS) ] = 0x0208, /* DTLB_MISSES.MISS_LD */
326 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
327 [ C(RESULT_MISS) ] = 0x0808, /* DTLB_MISSES.MISS_ST */
329 [ C(OP_PREFETCH) ] = {
330 [ C(RESULT_ACCESS) ] = 0,
331 [ C(RESULT_MISS) ] = 0,
336 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
337 [ C(RESULT_MISS) ] = 0x1282, /* ITLBMISSES */
340 [ C(RESULT_ACCESS) ] = -1,
341 [ C(RESULT_MISS) ] = -1,
343 [ C(OP_PREFETCH) ] = {
344 [ C(RESULT_ACCESS) ] = -1,
345 [ C(RESULT_MISS) ] = -1,
350 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
351 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
354 [ C(RESULT_ACCESS) ] = -1,
355 [ C(RESULT_MISS) ] = -1,
357 [ C(OP_PREFETCH) ] = {
358 [ C(RESULT_ACCESS) ] = -1,
359 [ C(RESULT_MISS) ] = -1,
364 static __initconst const u64 atom_hw_cache_event_ids
365 [PERF_COUNT_HW_CACHE_MAX]
366 [PERF_COUNT_HW_CACHE_OP_MAX]
367 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
371 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD */
372 [ C(RESULT_MISS) ] = 0,
375 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST */
376 [ C(RESULT_MISS) ] = 0,
378 [ C(OP_PREFETCH) ] = {
379 [ C(RESULT_ACCESS) ] = 0x0,
380 [ C(RESULT_MISS) ] = 0,
385 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
386 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
389 [ C(RESULT_ACCESS) ] = -1,
390 [ C(RESULT_MISS) ] = -1,
392 [ C(OP_PREFETCH) ] = {
393 [ C(RESULT_ACCESS) ] = 0,
394 [ C(RESULT_MISS) ] = 0,
399 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
400 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
403 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
404 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
406 [ C(OP_PREFETCH) ] = {
407 [ C(RESULT_ACCESS) ] = 0,
408 [ C(RESULT_MISS) ] = 0,
413 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI (alias) */
414 [ C(RESULT_MISS) ] = 0x0508, /* DTLB_MISSES.MISS_LD */
417 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI (alias) */
418 [ C(RESULT_MISS) ] = 0x0608, /* DTLB_MISSES.MISS_ST */
420 [ C(OP_PREFETCH) ] = {
421 [ C(RESULT_ACCESS) ] = 0,
422 [ C(RESULT_MISS) ] = 0,
427 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
428 [ C(RESULT_MISS) ] = 0x0282, /* ITLB.MISSES */
431 [ C(RESULT_ACCESS) ] = -1,
432 [ C(RESULT_MISS) ] = -1,
434 [ C(OP_PREFETCH) ] = {
435 [ C(RESULT_ACCESS) ] = -1,
436 [ C(RESULT_MISS) ] = -1,
441 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
442 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
445 [ C(RESULT_ACCESS) ] = -1,
446 [ C(RESULT_MISS) ] = -1,
448 [ C(OP_PREFETCH) ] = {
449 [ C(RESULT_ACCESS) ] = -1,
450 [ C(RESULT_MISS) ] = -1,
455 static void intel_pmu_disable_all(void)
457 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
459 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
461 if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask))
462 intel_pmu_disable_bts();
464 intel_pmu_pebs_disable_all();
465 intel_pmu_lbr_disable_all();
468 static void intel_pmu_enable_all(int added)
470 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
472 intel_pmu_pebs_enable_all();
473 intel_pmu_lbr_enable_all();
474 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl);
476 if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
477 struct perf_event *event =
478 cpuc->events[X86_PMC_IDX_FIXED_BTS];
480 if (WARN_ON_ONCE(!event))
483 intel_pmu_enable_bts(event->hw.config);
489 * Intel Errata AAK100 (model 26)
490 * Intel Errata AAP53 (model 30)
491 * Intel Errata BD53 (model 44)
493 * These chips need to be 'reset' when adding counters by programming
494 * the magic three (non counting) events 0x4300D2, 0x4300B1 and 0x4300B5
495 * either in sequence on the same PMC or on different PMCs.
497 static void intel_pmu_nhm_enable_all(int added)
500 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
503 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 0, 0x4300D2);
504 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 1, 0x4300B1);
505 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 2, 0x4300B5);
507 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x3);
508 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
510 for (i = 0; i < 3; i++) {
511 struct perf_event *event = cpuc->events[i];
516 __x86_pmu_enable_event(&event->hw);
519 intel_pmu_enable_all(added);
522 static inline u64 intel_pmu_get_status(void)
526 rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
531 static inline void intel_pmu_ack_status(u64 ack)
533 wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
536 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
538 int idx = hwc->idx - X86_PMC_IDX_FIXED;
541 mask = 0xfULL << (idx * 4);
543 rdmsrl(hwc->config_base, ctrl_val);
545 wrmsrl(hwc->config_base, ctrl_val);
548 static void intel_pmu_disable_event(struct perf_event *event)
550 struct hw_perf_event *hwc = &event->hw;
552 if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
553 intel_pmu_disable_bts();
554 intel_pmu_drain_bts_buffer();
558 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
559 intel_pmu_disable_fixed(hwc);
563 x86_pmu_disable_event(event);
565 if (unlikely(event->attr.precise))
566 intel_pmu_pebs_disable(event);
569 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
571 int idx = hwc->idx - X86_PMC_IDX_FIXED;
572 u64 ctrl_val, bits, mask;
575 * Enable IRQ generation (0x8),
576 * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
580 if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
582 if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
586 * ANY bit is supported in v3 and up
588 if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
592 mask = 0xfULL << (idx * 4);
594 rdmsrl(hwc->config_base, ctrl_val);
597 wrmsrl(hwc->config_base, ctrl_val);
600 static void intel_pmu_enable_event(struct perf_event *event)
602 struct hw_perf_event *hwc = &event->hw;
604 if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
605 if (!__get_cpu_var(cpu_hw_events).enabled)
608 intel_pmu_enable_bts(hwc->config);
612 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
613 intel_pmu_enable_fixed(hwc);
617 if (unlikely(event->attr.precise))
618 intel_pmu_pebs_enable(event);
620 __x86_pmu_enable_event(hwc);
624 * Save and restart an expired event. Called by NMI contexts,
625 * so it has to be careful about preempting normal event ops:
627 static int intel_pmu_save_and_restart(struct perf_event *event)
629 x86_perf_event_update(event);
630 return x86_perf_event_set_period(event);
633 static void intel_pmu_reset(void)
635 struct debug_store *ds = __get_cpu_var(cpu_hw_events).ds;
639 if (!x86_pmu.num_counters)
642 local_irq_save(flags);
644 printk("clearing PMU state on CPU#%d\n", smp_processor_id());
646 for (idx = 0; idx < x86_pmu.num_counters; idx++) {
647 checking_wrmsrl(x86_pmu.eventsel + idx, 0ull);
648 checking_wrmsrl(x86_pmu.perfctr + idx, 0ull);
650 for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
651 checking_wrmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
654 ds->bts_index = ds->bts_buffer_base;
656 local_irq_restore(flags);
660 * This handler is triggered by the local APIC, so the APIC IRQ handling
663 static int intel_pmu_handle_irq(struct pt_regs *regs)
665 struct perf_sample_data data;
666 struct cpu_hw_events *cpuc;
670 perf_sample_data_init(&data, 0);
672 cpuc = &__get_cpu_var(cpu_hw_events);
674 intel_pmu_disable_all();
675 intel_pmu_drain_bts_buffer();
676 status = intel_pmu_get_status();
678 intel_pmu_enable_all(0);
685 WARN_ONCE(1, "perfevents: irq loop stuck!\n");
686 perf_event_print_debug();
691 inc_irq_stat(apic_perf_irqs);
694 intel_pmu_lbr_read();
697 * PEBS overflow sets bit 62 in the global status register
699 if (__test_and_clear_bit(62, (unsigned long *)&status))
700 x86_pmu.drain_pebs(regs);
702 for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
703 struct perf_event *event = cpuc->events[bit];
705 if (!test_bit(bit, cpuc->active_mask))
708 if (!intel_pmu_save_and_restart(event))
711 data.period = event->hw.last_period;
713 if (perf_event_overflow(event, 1, &data, regs))
717 intel_pmu_ack_status(ack);
720 * Repeat if there is more work to be done:
722 status = intel_pmu_get_status();
727 intel_pmu_enable_all(0);
731 static struct event_constraint *
732 intel_bts_constraints(struct perf_event *event)
734 struct hw_perf_event *hwc = &event->hw;
735 unsigned int hw_event, bts_event;
737 hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
738 bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
740 if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
741 return &bts_constraint;
746 static struct event_constraint *
747 intel_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
749 struct event_constraint *c;
751 c = intel_bts_constraints(event);
755 c = intel_pebs_constraints(event);
759 return x86_get_event_constraints(cpuc, event);
762 static int intel_pmu_hw_config(struct perf_event *event)
764 int ret = x86_pmu_hw_config(event);
769 if (event->attr.type != PERF_TYPE_RAW)
772 if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
775 if (x86_pmu.version < 3)
778 if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
781 event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
786 static __initconst const struct x86_pmu core_pmu = {
788 .handle_irq = x86_pmu_handle_irq,
789 .disable_all = x86_pmu_disable_all,
790 .enable_all = x86_pmu_enable_all,
791 .enable = x86_pmu_enable_event,
792 .disable = x86_pmu_disable_event,
793 .hw_config = x86_pmu_hw_config,
794 .schedule_events = x86_schedule_events,
795 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
796 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
797 .event_map = intel_pmu_event_map,
798 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
801 * Intel PMCs cannot be accessed sanely above 32 bit width,
802 * so we install an artificial 1<<31 period regardless of
803 * the generic event period:
805 .max_period = (1ULL << 31) - 1,
806 .get_event_constraints = intel_get_event_constraints,
807 .event_constraints = intel_core_event_constraints,
810 static void intel_pmu_cpu_starting(int cpu)
812 init_debug_store_on_cpu(cpu);
814 * Deal with CPUs that don't clear their LBRs on power-up.
816 intel_pmu_lbr_reset();
819 static void intel_pmu_cpu_dying(int cpu)
821 fini_debug_store_on_cpu(cpu);
824 static __initconst const struct x86_pmu intel_pmu = {
826 .handle_irq = intel_pmu_handle_irq,
827 .disable_all = intel_pmu_disable_all,
828 .enable_all = intel_pmu_enable_all,
829 .enable = intel_pmu_enable_event,
830 .disable = intel_pmu_disable_event,
831 .hw_config = intel_pmu_hw_config,
832 .schedule_events = x86_schedule_events,
833 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
834 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
835 .event_map = intel_pmu_event_map,
836 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
839 * Intel PMCs cannot be accessed sanely above 32 bit width,
840 * so we install an artificial 1<<31 period regardless of
841 * the generic event period:
843 .max_period = (1ULL << 31) - 1,
844 .get_event_constraints = intel_get_event_constraints,
846 .cpu_starting = intel_pmu_cpu_starting,
847 .cpu_dying = intel_pmu_cpu_dying,
850 static void intel_clovertown_quirks(void)
853 * PEBS is unreliable due to:
855 * AJ67 - PEBS may experience CPL leaks
856 * AJ68 - PEBS PMI may be delayed by one event
857 * AJ69 - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
858 * AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
860 * AJ67 could be worked around by restricting the OS/USR flags.
861 * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
863 * AJ106 could possibly be worked around by not allowing LBR
864 * usage from PEBS, including the fixup.
865 * AJ68 could possibly be worked around by always programming
866 * a pebs_event_reset[0] value and coping with the lost events.
868 * But taken together it might just make sense to not enable PEBS on
871 printk(KERN_WARNING "PEBS disabled due to CPU errata.\n");
873 x86_pmu.pebs_constraints = NULL;
876 static __init int intel_pmu_init(void)
878 union cpuid10_edx edx;
879 union cpuid10_eax eax;
884 if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
885 switch (boot_cpu_data.x86) {
887 return p6_pmu_init();
889 return p4_pmu_init();
895 * Check whether the Architectural PerfMon supports
896 * Branch Misses Retired hw_event or not.
898 cpuid(10, &eax.full, &ebx, &unused, &edx.full);
899 if (eax.split.mask_length <= ARCH_PERFMON_BRANCH_MISSES_RETIRED)
902 version = eax.split.version_id;
908 x86_pmu.version = version;
909 x86_pmu.num_counters = eax.split.num_counters;
910 x86_pmu.cntval_bits = eax.split.bit_width;
911 x86_pmu.cntval_mask = (1ULL << eax.split.bit_width) - 1;
914 * Quirk: v2 perfmon does not report fixed-purpose events, so
915 * assume at least 3 events:
918 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
921 * v2 and above have a perf capabilities MSR
926 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
927 x86_pmu.intel_cap.capabilities = capabilities;
933 * Install the hw-cache-events table:
935 switch (boot_cpu_data.x86_model) {
936 case 14: /* 65 nm core solo/duo, "Yonah" */
937 pr_cont("Core events, ");
940 case 15: /* original 65 nm celeron/pentium/core2/xeon, "Merom"/"Conroe" */
941 x86_pmu.quirks = intel_clovertown_quirks;
942 case 22: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L" */
943 case 23: /* current 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
944 case 29: /* six-core 45 nm xeon "Dunnington" */
945 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
946 sizeof(hw_cache_event_ids));
948 intel_pmu_lbr_init_core();
950 x86_pmu.event_constraints = intel_core2_event_constraints;
951 pr_cont("Core2 events, ");
954 case 26: /* 45 nm nehalem, "Bloomfield" */
955 case 30: /* 45 nm nehalem, "Lynnfield" */
956 case 46: /* 45 nm nehalem-ex, "Beckton" */
957 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
958 sizeof(hw_cache_event_ids));
960 intel_pmu_lbr_init_nhm();
962 x86_pmu.event_constraints = intel_nehalem_event_constraints;
963 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
964 pr_cont("Nehalem events, ");
968 memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
969 sizeof(hw_cache_event_ids));
971 intel_pmu_lbr_init_atom();
973 x86_pmu.event_constraints = intel_gen_event_constraints;
974 pr_cont("Atom events, ");
977 case 37: /* 32 nm nehalem, "Clarkdale" */
978 case 44: /* 32 nm nehalem, "Gulftown" */
979 memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
980 sizeof(hw_cache_event_ids));
982 intel_pmu_lbr_init_nhm();
984 x86_pmu.event_constraints = intel_westmere_event_constraints;
985 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
986 pr_cont("Westmere events, ");
991 * default constraints for v2 and up
993 x86_pmu.event_constraints = intel_gen_event_constraints;
994 pr_cont("generic architected perfmon, ");
999 #else /* CONFIG_CPU_SUP_INTEL */
1001 static int intel_pmu_init(void)
1006 #endif /* CONFIG_CPU_SUP_INTEL */