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perf_events: Fix Intel Westmere event constraints
[deliverable/linux.git] / arch / x86 / kernel / cpu / perf_event_intel.c
1 #ifdef CONFIG_CPU_SUP_INTEL
2
3 /*
4 * Intel PerfMon, used on Core and later.
5 */
6 static const u64 intel_perfmon_event_map[] =
7 {
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,
15 };
16
17 static struct event_constraint intel_core_event_constraints[] =
18 {
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 */
25 EVENT_CONSTRAINT_END
26 };
27
28 static struct event_constraint intel_core2_event_constraints[] =
29 {
30 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
31 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
32 /*
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.
36 */
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 */
48 EVENT_CONSTRAINT_END
49 };
50
51 static struct event_constraint intel_nehalem_event_constraints[] =
52 {
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 */
64 EVENT_CONSTRAINT_END
65 };
66
67 static struct event_constraint intel_westmere_event_constraints[] =
68 {
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 */
75 INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
76 EVENT_CONSTRAINT_END
77 };
78
79 static struct event_constraint intel_gen_event_constraints[] =
80 {
81 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
82 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
83 /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */
84 EVENT_CONSTRAINT_END
85 };
86
87 static u64 intel_pmu_event_map(int hw_event)
88 {
89 return intel_perfmon_event_map[hw_event];
90 }
91
92 static __initconst const u64 westmere_hw_cache_event_ids
93 [PERF_COUNT_HW_CACHE_MAX]
94 [PERF_COUNT_HW_CACHE_OP_MAX]
95 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
96 {
97 [ C(L1D) ] = {
98 [ C(OP_READ) ] = {
99 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
100 [ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
101 },
102 [ C(OP_WRITE) ] = {
103 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
104 [ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
105 },
106 [ C(OP_PREFETCH) ] = {
107 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
108 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
109 },
110 },
111 [ C(L1I ) ] = {
112 [ C(OP_READ) ] = {
113 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
114 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
115 },
116 [ C(OP_WRITE) ] = {
117 [ C(RESULT_ACCESS) ] = -1,
118 [ C(RESULT_MISS) ] = -1,
119 },
120 [ C(OP_PREFETCH) ] = {
121 [ C(RESULT_ACCESS) ] = 0x0,
122 [ C(RESULT_MISS) ] = 0x0,
123 },
124 },
125 [ C(LL ) ] = {
126 [ C(OP_READ) ] = {
127 [ C(RESULT_ACCESS) ] = 0x0324, /* L2_RQSTS.LOADS */
128 [ C(RESULT_MISS) ] = 0x0224, /* L2_RQSTS.LD_MISS */
129 },
130 [ C(OP_WRITE) ] = {
131 [ C(RESULT_ACCESS) ] = 0x0c24, /* L2_RQSTS.RFOS */
132 [ C(RESULT_MISS) ] = 0x0824, /* L2_RQSTS.RFO_MISS */
133 },
134 [ C(OP_PREFETCH) ] = {
135 [ C(RESULT_ACCESS) ] = 0x4f2e, /* LLC Reference */
136 [ C(RESULT_MISS) ] = 0x412e, /* LLC Misses */
137 },
138 },
139 [ C(DTLB) ] = {
140 [ C(OP_READ) ] = {
141 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
142 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
143 },
144 [ C(OP_WRITE) ] = {
145 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
146 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
147 },
148 [ C(OP_PREFETCH) ] = {
149 [ C(RESULT_ACCESS) ] = 0x0,
150 [ C(RESULT_MISS) ] = 0x0,
151 },
152 },
153 [ C(ITLB) ] = {
154 [ C(OP_READ) ] = {
155 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
156 [ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.ANY */
157 },
158 [ C(OP_WRITE) ] = {
159 [ C(RESULT_ACCESS) ] = -1,
160 [ C(RESULT_MISS) ] = -1,
161 },
162 [ C(OP_PREFETCH) ] = {
163 [ C(RESULT_ACCESS) ] = -1,
164 [ C(RESULT_MISS) ] = -1,
165 },
166 },
167 [ C(BPU ) ] = {
168 [ C(OP_READ) ] = {
169 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
170 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
171 },
172 [ C(OP_WRITE) ] = {
173 [ C(RESULT_ACCESS) ] = -1,
174 [ C(RESULT_MISS) ] = -1,
175 },
176 [ C(OP_PREFETCH) ] = {
177 [ C(RESULT_ACCESS) ] = -1,
178 [ C(RESULT_MISS) ] = -1,
179 },
180 },
181 };
182
183 static __initconst const u64 nehalem_hw_cache_event_ids
184 [PERF_COUNT_HW_CACHE_MAX]
185 [PERF_COUNT_HW_CACHE_OP_MAX]
186 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
187 {
188 [ C(L1D) ] = {
189 [ C(OP_READ) ] = {
190 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
191 [ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
192 },
193 [ C(OP_WRITE) ] = {
194 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
195 [ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
196 },
197 [ C(OP_PREFETCH) ] = {
198 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
199 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
200 },
201 },
202 [ C(L1I ) ] = {
203 [ C(OP_READ) ] = {
204 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
205 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
206 },
207 [ C(OP_WRITE) ] = {
208 [ C(RESULT_ACCESS) ] = -1,
209 [ C(RESULT_MISS) ] = -1,
210 },
211 [ C(OP_PREFETCH) ] = {
212 [ C(RESULT_ACCESS) ] = 0x0,
213 [ C(RESULT_MISS) ] = 0x0,
214 },
215 },
216 [ C(LL ) ] = {
217 [ C(OP_READ) ] = {
218 [ C(RESULT_ACCESS) ] = 0x0324, /* L2_RQSTS.LOADS */
219 [ C(RESULT_MISS) ] = 0x0224, /* L2_RQSTS.LD_MISS */
220 },
221 [ C(OP_WRITE) ] = {
222 [ C(RESULT_ACCESS) ] = 0x0c24, /* L2_RQSTS.RFOS */
223 [ C(RESULT_MISS) ] = 0x0824, /* L2_RQSTS.RFO_MISS */
224 },
225 [ C(OP_PREFETCH) ] = {
226 [ C(RESULT_ACCESS) ] = 0x4f2e, /* LLC Reference */
227 [ C(RESULT_MISS) ] = 0x412e, /* LLC Misses */
228 },
229 },
230 [ C(DTLB) ] = {
231 [ C(OP_READ) ] = {
232 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
233 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
234 },
235 [ C(OP_WRITE) ] = {
236 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
237 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
238 },
239 [ C(OP_PREFETCH) ] = {
240 [ C(RESULT_ACCESS) ] = 0x0,
241 [ C(RESULT_MISS) ] = 0x0,
242 },
243 },
244 [ C(ITLB) ] = {
245 [ C(OP_READ) ] = {
246 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
247 [ C(RESULT_MISS) ] = 0x20c8, /* ITLB_MISS_RETIRED */
248 },
249 [ C(OP_WRITE) ] = {
250 [ C(RESULT_ACCESS) ] = -1,
251 [ C(RESULT_MISS) ] = -1,
252 },
253 [ C(OP_PREFETCH) ] = {
254 [ C(RESULT_ACCESS) ] = -1,
255 [ C(RESULT_MISS) ] = -1,
256 },
257 },
258 [ C(BPU ) ] = {
259 [ C(OP_READ) ] = {
260 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
261 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
262 },
263 [ C(OP_WRITE) ] = {
264 [ C(RESULT_ACCESS) ] = -1,
265 [ C(RESULT_MISS) ] = -1,
266 },
267 [ C(OP_PREFETCH) ] = {
268 [ C(RESULT_ACCESS) ] = -1,
269 [ C(RESULT_MISS) ] = -1,
270 },
271 },
272 };
273
274 static __initconst const u64 core2_hw_cache_event_ids
275 [PERF_COUNT_HW_CACHE_MAX]
276 [PERF_COUNT_HW_CACHE_OP_MAX]
277 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
278 {
279 [ C(L1D) ] = {
280 [ C(OP_READ) ] = {
281 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
282 [ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
283 },
284 [ C(OP_WRITE) ] = {
285 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
286 [ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
287 },
288 [ C(OP_PREFETCH) ] = {
289 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS */
290 [ C(RESULT_MISS) ] = 0,
291 },
292 },
293 [ C(L1I ) ] = {
294 [ C(OP_READ) ] = {
295 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS */
296 [ C(RESULT_MISS) ] = 0x0081, /* L1I.MISSES */
297 },
298 [ C(OP_WRITE) ] = {
299 [ C(RESULT_ACCESS) ] = -1,
300 [ C(RESULT_MISS) ] = -1,
301 },
302 [ C(OP_PREFETCH) ] = {
303 [ C(RESULT_ACCESS) ] = 0,
304 [ C(RESULT_MISS) ] = 0,
305 },
306 },
307 [ C(LL ) ] = {
308 [ C(OP_READ) ] = {
309 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
310 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
311 },
312 [ C(OP_WRITE) ] = {
313 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
314 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
315 },
316 [ C(OP_PREFETCH) ] = {
317 [ C(RESULT_ACCESS) ] = 0,
318 [ C(RESULT_MISS) ] = 0,
319 },
320 },
321 [ C(DTLB) ] = {
322 [ C(OP_READ) ] = {
323 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
324 [ C(RESULT_MISS) ] = 0x0208, /* DTLB_MISSES.MISS_LD */
325 },
326 [ C(OP_WRITE) ] = {
327 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
328 [ C(RESULT_MISS) ] = 0x0808, /* DTLB_MISSES.MISS_ST */
329 },
330 [ C(OP_PREFETCH) ] = {
331 [ C(RESULT_ACCESS) ] = 0,
332 [ C(RESULT_MISS) ] = 0,
333 },
334 },
335 [ C(ITLB) ] = {
336 [ C(OP_READ) ] = {
337 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
338 [ C(RESULT_MISS) ] = 0x1282, /* ITLBMISSES */
339 },
340 [ C(OP_WRITE) ] = {
341 [ C(RESULT_ACCESS) ] = -1,
342 [ C(RESULT_MISS) ] = -1,
343 },
344 [ C(OP_PREFETCH) ] = {
345 [ C(RESULT_ACCESS) ] = -1,
346 [ C(RESULT_MISS) ] = -1,
347 },
348 },
349 [ C(BPU ) ] = {
350 [ C(OP_READ) ] = {
351 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
352 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
353 },
354 [ C(OP_WRITE) ] = {
355 [ C(RESULT_ACCESS) ] = -1,
356 [ C(RESULT_MISS) ] = -1,
357 },
358 [ C(OP_PREFETCH) ] = {
359 [ C(RESULT_ACCESS) ] = -1,
360 [ C(RESULT_MISS) ] = -1,
361 },
362 },
363 };
364
365 static __initconst const u64 atom_hw_cache_event_ids
366 [PERF_COUNT_HW_CACHE_MAX]
367 [PERF_COUNT_HW_CACHE_OP_MAX]
368 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
369 {
370 [ C(L1D) ] = {
371 [ C(OP_READ) ] = {
372 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD */
373 [ C(RESULT_MISS) ] = 0,
374 },
375 [ C(OP_WRITE) ] = {
376 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST */
377 [ C(RESULT_MISS) ] = 0,
378 },
379 [ C(OP_PREFETCH) ] = {
380 [ C(RESULT_ACCESS) ] = 0x0,
381 [ C(RESULT_MISS) ] = 0,
382 },
383 },
384 [ C(L1I ) ] = {
385 [ C(OP_READ) ] = {
386 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
387 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
388 },
389 [ C(OP_WRITE) ] = {
390 [ C(RESULT_ACCESS) ] = -1,
391 [ C(RESULT_MISS) ] = -1,
392 },
393 [ C(OP_PREFETCH) ] = {
394 [ C(RESULT_ACCESS) ] = 0,
395 [ C(RESULT_MISS) ] = 0,
396 },
397 },
398 [ C(LL ) ] = {
399 [ C(OP_READ) ] = {
400 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
401 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
402 },
403 [ C(OP_WRITE) ] = {
404 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
405 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
406 },
407 [ C(OP_PREFETCH) ] = {
408 [ C(RESULT_ACCESS) ] = 0,
409 [ C(RESULT_MISS) ] = 0,
410 },
411 },
412 [ C(DTLB) ] = {
413 [ C(OP_READ) ] = {
414 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI (alias) */
415 [ C(RESULT_MISS) ] = 0x0508, /* DTLB_MISSES.MISS_LD */
416 },
417 [ C(OP_WRITE) ] = {
418 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI (alias) */
419 [ C(RESULT_MISS) ] = 0x0608, /* DTLB_MISSES.MISS_ST */
420 },
421 [ C(OP_PREFETCH) ] = {
422 [ C(RESULT_ACCESS) ] = 0,
423 [ C(RESULT_MISS) ] = 0,
424 },
425 },
426 [ C(ITLB) ] = {
427 [ C(OP_READ) ] = {
428 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
429 [ C(RESULT_MISS) ] = 0x0282, /* ITLB.MISSES */
430 },
431 [ C(OP_WRITE) ] = {
432 [ C(RESULT_ACCESS) ] = -1,
433 [ C(RESULT_MISS) ] = -1,
434 },
435 [ C(OP_PREFETCH) ] = {
436 [ C(RESULT_ACCESS) ] = -1,
437 [ C(RESULT_MISS) ] = -1,
438 },
439 },
440 [ C(BPU ) ] = {
441 [ C(OP_READ) ] = {
442 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
443 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
444 },
445 [ C(OP_WRITE) ] = {
446 [ C(RESULT_ACCESS) ] = -1,
447 [ C(RESULT_MISS) ] = -1,
448 },
449 [ C(OP_PREFETCH) ] = {
450 [ C(RESULT_ACCESS) ] = -1,
451 [ C(RESULT_MISS) ] = -1,
452 },
453 },
454 };
455
456 static void intel_pmu_disable_all(void)
457 {
458 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
459
460 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
461
462 if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask))
463 intel_pmu_disable_bts();
464
465 intel_pmu_pebs_disable_all();
466 intel_pmu_lbr_disable_all();
467 }
468
469 static void intel_pmu_enable_all(int added)
470 {
471 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
472
473 intel_pmu_pebs_enable_all();
474 intel_pmu_lbr_enable_all();
475 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl);
476
477 if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
478 struct perf_event *event =
479 cpuc->events[X86_PMC_IDX_FIXED_BTS];
480
481 if (WARN_ON_ONCE(!event))
482 return;
483
484 intel_pmu_enable_bts(event->hw.config);
485 }
486 }
487
488 /*
489 * Workaround for:
490 * Intel Errata AAK100 (model 26)
491 * Intel Errata AAP53 (model 30)
492 * Intel Errata BD53 (model 44)
493 *
494 * These chips need to be 'reset' when adding counters by programming
495 * the magic three (non counting) events 0x4300D2, 0x4300B1 and 0x4300B5
496 * either in sequence on the same PMC or on different PMCs.
497 */
498 static void intel_pmu_nhm_enable_all(int added)
499 {
500 if (added) {
501 struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
502 int i;
503
504 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 0, 0x4300D2);
505 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 1, 0x4300B1);
506 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + 2, 0x4300B5);
507
508 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x3);
509 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
510
511 for (i = 0; i < 3; i++) {
512 struct perf_event *event = cpuc->events[i];
513
514 if (!event)
515 continue;
516
517 __x86_pmu_enable_event(&event->hw,
518 ARCH_PERFMON_EVENTSEL_ENABLE);
519 }
520 }
521 intel_pmu_enable_all(added);
522 }
523
524 static inline u64 intel_pmu_get_status(void)
525 {
526 u64 status;
527
528 rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
529
530 return status;
531 }
532
533 static inline void intel_pmu_ack_status(u64 ack)
534 {
535 wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
536 }
537
538 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
539 {
540 int idx = hwc->idx - X86_PMC_IDX_FIXED;
541 u64 ctrl_val, mask;
542
543 mask = 0xfULL << (idx * 4);
544
545 rdmsrl(hwc->config_base, ctrl_val);
546 ctrl_val &= ~mask;
547 wrmsrl(hwc->config_base, ctrl_val);
548 }
549
550 static void intel_pmu_disable_event(struct perf_event *event)
551 {
552 struct hw_perf_event *hwc = &event->hw;
553
554 if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
555 intel_pmu_disable_bts();
556 intel_pmu_drain_bts_buffer();
557 return;
558 }
559
560 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
561 intel_pmu_disable_fixed(hwc);
562 return;
563 }
564
565 x86_pmu_disable_event(event);
566
567 if (unlikely(event->attr.precise_ip))
568 intel_pmu_pebs_disable(event);
569 }
570
571 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
572 {
573 int idx = hwc->idx - X86_PMC_IDX_FIXED;
574 u64 ctrl_val, bits, mask;
575
576 /*
577 * Enable IRQ generation (0x8),
578 * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
579 * if requested:
580 */
581 bits = 0x8ULL;
582 if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
583 bits |= 0x2;
584 if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
585 bits |= 0x1;
586
587 /*
588 * ANY bit is supported in v3 and up
589 */
590 if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
591 bits |= 0x4;
592
593 bits <<= (idx * 4);
594 mask = 0xfULL << (idx * 4);
595
596 rdmsrl(hwc->config_base, ctrl_val);
597 ctrl_val &= ~mask;
598 ctrl_val |= bits;
599 wrmsrl(hwc->config_base, ctrl_val);
600 }
601
602 static void intel_pmu_enable_event(struct perf_event *event)
603 {
604 struct hw_perf_event *hwc = &event->hw;
605
606 if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
607 if (!__get_cpu_var(cpu_hw_events).enabled)
608 return;
609
610 intel_pmu_enable_bts(hwc->config);
611 return;
612 }
613
614 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
615 intel_pmu_enable_fixed(hwc);
616 return;
617 }
618
619 if (unlikely(event->attr.precise_ip))
620 intel_pmu_pebs_enable(event);
621
622 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
623 }
624
625 /*
626 * Save and restart an expired event. Called by NMI contexts,
627 * so it has to be careful about preempting normal event ops:
628 */
629 static int intel_pmu_save_and_restart(struct perf_event *event)
630 {
631 x86_perf_event_update(event);
632 return x86_perf_event_set_period(event);
633 }
634
635 static void intel_pmu_reset(void)
636 {
637 struct debug_store *ds = __get_cpu_var(cpu_hw_events).ds;
638 unsigned long flags;
639 int idx;
640
641 if (!x86_pmu.num_counters)
642 return;
643
644 local_irq_save(flags);
645
646 printk("clearing PMU state on CPU#%d\n", smp_processor_id());
647
648 for (idx = 0; idx < x86_pmu.num_counters; idx++) {
649 checking_wrmsrl(x86_pmu.eventsel + idx, 0ull);
650 checking_wrmsrl(x86_pmu.perfctr + idx, 0ull);
651 }
652 for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
653 checking_wrmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
654
655 if (ds)
656 ds->bts_index = ds->bts_buffer_base;
657
658 local_irq_restore(flags);
659 }
660
661 /*
662 * This handler is triggered by the local APIC, so the APIC IRQ handling
663 * rules apply:
664 */
665 static int intel_pmu_handle_irq(struct pt_regs *regs)
666 {
667 struct perf_sample_data data;
668 struct cpu_hw_events *cpuc;
669 int bit, loops;
670 u64 ack, status;
671
672 perf_sample_data_init(&data, 0);
673
674 cpuc = &__get_cpu_var(cpu_hw_events);
675
676 intel_pmu_disable_all();
677 intel_pmu_drain_bts_buffer();
678 status = intel_pmu_get_status();
679 if (!status) {
680 intel_pmu_enable_all(0);
681 return 0;
682 }
683
684 loops = 0;
685 again:
686 if (++loops > 100) {
687 WARN_ONCE(1, "perfevents: irq loop stuck!\n");
688 perf_event_print_debug();
689 intel_pmu_reset();
690 goto done;
691 }
692
693 inc_irq_stat(apic_perf_irqs);
694 ack = status;
695
696 intel_pmu_lbr_read();
697
698 /*
699 * PEBS overflow sets bit 62 in the global status register
700 */
701 if (__test_and_clear_bit(62, (unsigned long *)&status))
702 x86_pmu.drain_pebs(regs);
703
704 for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
705 struct perf_event *event = cpuc->events[bit];
706
707 if (!test_bit(bit, cpuc->active_mask))
708 continue;
709
710 if (!intel_pmu_save_and_restart(event))
711 continue;
712
713 data.period = event->hw.last_period;
714
715 if (perf_event_overflow(event, 1, &data, regs))
716 x86_pmu_stop(event);
717 }
718
719 intel_pmu_ack_status(ack);
720
721 /*
722 * Repeat if there is more work to be done:
723 */
724 status = intel_pmu_get_status();
725 if (status)
726 goto again;
727
728 done:
729 intel_pmu_enable_all(0);
730 return 1;
731 }
732
733 static struct event_constraint *
734 intel_bts_constraints(struct perf_event *event)
735 {
736 struct hw_perf_event *hwc = &event->hw;
737 unsigned int hw_event, bts_event;
738
739 hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
740 bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
741
742 if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
743 return &bts_constraint;
744
745 return NULL;
746 }
747
748 static struct event_constraint *
749 intel_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
750 {
751 struct event_constraint *c;
752
753 c = intel_bts_constraints(event);
754 if (c)
755 return c;
756
757 c = intel_pebs_constraints(event);
758 if (c)
759 return c;
760
761 return x86_get_event_constraints(cpuc, event);
762 }
763
764 static int intel_pmu_hw_config(struct perf_event *event)
765 {
766 int ret = x86_pmu_hw_config(event);
767
768 if (ret)
769 return ret;
770
771 if (event->attr.type != PERF_TYPE_RAW)
772 return 0;
773
774 if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
775 return 0;
776
777 if (x86_pmu.version < 3)
778 return -EINVAL;
779
780 if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
781 return -EACCES;
782
783 event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
784
785 return 0;
786 }
787
788 static __initconst const struct x86_pmu core_pmu = {
789 .name = "core",
790 .handle_irq = x86_pmu_handle_irq,
791 .disable_all = x86_pmu_disable_all,
792 .enable_all = x86_pmu_enable_all,
793 .enable = x86_pmu_enable_event,
794 .disable = x86_pmu_disable_event,
795 .hw_config = x86_pmu_hw_config,
796 .schedule_events = x86_schedule_events,
797 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
798 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
799 .event_map = intel_pmu_event_map,
800 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
801 .apic = 1,
802 /*
803 * Intel PMCs cannot be accessed sanely above 32 bit width,
804 * so we install an artificial 1<<31 period regardless of
805 * the generic event period:
806 */
807 .max_period = (1ULL << 31) - 1,
808 .get_event_constraints = intel_get_event_constraints,
809 .event_constraints = intel_core_event_constraints,
810 };
811
812 static void intel_pmu_cpu_starting(int cpu)
813 {
814 init_debug_store_on_cpu(cpu);
815 /*
816 * Deal with CPUs that don't clear their LBRs on power-up.
817 */
818 intel_pmu_lbr_reset();
819 }
820
821 static void intel_pmu_cpu_dying(int cpu)
822 {
823 fini_debug_store_on_cpu(cpu);
824 }
825
826 static __initconst const struct x86_pmu intel_pmu = {
827 .name = "Intel",
828 .handle_irq = intel_pmu_handle_irq,
829 .disable_all = intel_pmu_disable_all,
830 .enable_all = intel_pmu_enable_all,
831 .enable = intel_pmu_enable_event,
832 .disable = intel_pmu_disable_event,
833 .hw_config = intel_pmu_hw_config,
834 .schedule_events = x86_schedule_events,
835 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
836 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
837 .event_map = intel_pmu_event_map,
838 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
839 .apic = 1,
840 /*
841 * Intel PMCs cannot be accessed sanely above 32 bit width,
842 * so we install an artificial 1<<31 period regardless of
843 * the generic event period:
844 */
845 .max_period = (1ULL << 31) - 1,
846 .get_event_constraints = intel_get_event_constraints,
847
848 .cpu_starting = intel_pmu_cpu_starting,
849 .cpu_dying = intel_pmu_cpu_dying,
850 };
851
852 static void intel_clovertown_quirks(void)
853 {
854 /*
855 * PEBS is unreliable due to:
856 *
857 * AJ67 - PEBS may experience CPL leaks
858 * AJ68 - PEBS PMI may be delayed by one event
859 * AJ69 - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
860 * AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
861 *
862 * AJ67 could be worked around by restricting the OS/USR flags.
863 * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
864 *
865 * AJ106 could possibly be worked around by not allowing LBR
866 * usage from PEBS, including the fixup.
867 * AJ68 could possibly be worked around by always programming
868 * a pebs_event_reset[0] value and coping with the lost events.
869 *
870 * But taken together it might just make sense to not enable PEBS on
871 * these chips.
872 */
873 printk(KERN_WARNING "PEBS disabled due to CPU errata.\n");
874 x86_pmu.pebs = 0;
875 x86_pmu.pebs_constraints = NULL;
876 }
877
878 static __init int intel_pmu_init(void)
879 {
880 union cpuid10_edx edx;
881 union cpuid10_eax eax;
882 unsigned int unused;
883 unsigned int ebx;
884 int version;
885
886 if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
887 switch (boot_cpu_data.x86) {
888 case 0x6:
889 return p6_pmu_init();
890 case 0xf:
891 return p4_pmu_init();
892 }
893 return -ENODEV;
894 }
895
896 /*
897 * Check whether the Architectural PerfMon supports
898 * Branch Misses Retired hw_event or not.
899 */
900 cpuid(10, &eax.full, &ebx, &unused, &edx.full);
901 if (eax.split.mask_length <= ARCH_PERFMON_BRANCH_MISSES_RETIRED)
902 return -ENODEV;
903
904 version = eax.split.version_id;
905 if (version < 2)
906 x86_pmu = core_pmu;
907 else
908 x86_pmu = intel_pmu;
909
910 x86_pmu.version = version;
911 x86_pmu.num_counters = eax.split.num_counters;
912 x86_pmu.cntval_bits = eax.split.bit_width;
913 x86_pmu.cntval_mask = (1ULL << eax.split.bit_width) - 1;
914
915 /*
916 * Quirk: v2 perfmon does not report fixed-purpose events, so
917 * assume at least 3 events:
918 */
919 if (version > 1)
920 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
921
922 /*
923 * v2 and above have a perf capabilities MSR
924 */
925 if (version > 1) {
926 u64 capabilities;
927
928 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
929 x86_pmu.intel_cap.capabilities = capabilities;
930 }
931
932 intel_ds_init();
933
934 /*
935 * Install the hw-cache-events table:
936 */
937 switch (boot_cpu_data.x86_model) {
938 case 14: /* 65 nm core solo/duo, "Yonah" */
939 pr_cont("Core events, ");
940 break;
941
942 case 15: /* original 65 nm celeron/pentium/core2/xeon, "Merom"/"Conroe" */
943 x86_pmu.quirks = intel_clovertown_quirks;
944 case 22: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L" */
945 case 23: /* current 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
946 case 29: /* six-core 45 nm xeon "Dunnington" */
947 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
948 sizeof(hw_cache_event_ids));
949
950 intel_pmu_lbr_init_core();
951
952 x86_pmu.event_constraints = intel_core2_event_constraints;
953 pr_cont("Core2 events, ");
954 break;
955
956 case 26: /* 45 nm nehalem, "Bloomfield" */
957 case 30: /* 45 nm nehalem, "Lynnfield" */
958 case 46: /* 45 nm nehalem-ex, "Beckton" */
959 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
960 sizeof(hw_cache_event_ids));
961
962 intel_pmu_lbr_init_nhm();
963
964 x86_pmu.event_constraints = intel_nehalem_event_constraints;
965 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
966 pr_cont("Nehalem events, ");
967 break;
968
969 case 28: /* Atom */
970 memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
971 sizeof(hw_cache_event_ids));
972
973 intel_pmu_lbr_init_atom();
974
975 x86_pmu.event_constraints = intel_gen_event_constraints;
976 pr_cont("Atom events, ");
977 break;
978
979 case 37: /* 32 nm nehalem, "Clarkdale" */
980 case 44: /* 32 nm nehalem, "Gulftown" */
981 memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
982 sizeof(hw_cache_event_ids));
983
984 intel_pmu_lbr_init_nhm();
985
986 x86_pmu.event_constraints = intel_westmere_event_constraints;
987 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
988 pr_cont("Westmere events, ");
989 break;
990
991 default:
992 /*
993 * default constraints for v2 and up
994 */
995 x86_pmu.event_constraints = intel_gen_event_constraints;
996 pr_cont("generic architected perfmon, ");
997 }
998 return 0;
999 }
1000
1001 #else /* CONFIG_CPU_SUP_INTEL */
1002
1003 static int intel_pmu_init(void)
1004 {
1005 return 0;
1006 }
1007
1008 #endif /* CONFIG_CPU_SUP_INTEL */
Linux kernel - Deliverables
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