1 /*
2 * Per core/cpu state
3 *
4 * Used to coordinate shared registers between HT threads or
5 * among events on a single PMU.
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/stddef.h>
11 #include <linux/types.h>
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/export.h>
15 #include <linux/nmi.h>
16
17 #include <asm/cpufeature.h>
18 #include <asm/hardirq.h>
19 #include <asm/apic.h>
20
21 #include "perf_event.h"
22
23 /*
24 * Intel PerfMon, used on Core and later.
25 */
26 static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
27 {
28 [PERF_COUNT_HW_CPU_CYCLES] = 0x003c,
29 [PERF_COUNT_HW_INSTRUCTIONS] = 0x00c0,
30 [PERF_COUNT_HW_CACHE_REFERENCES] = 0x4f2e,
31 [PERF_COUNT_HW_CACHE_MISSES] = 0x412e,
32 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x00c4,
33 [PERF_COUNT_HW_BRANCH_MISSES] = 0x00c5,
34 [PERF_COUNT_HW_BUS_CYCLES] = 0x013c,
35 [PERF_COUNT_HW_REF_CPU_CYCLES] = 0x0300, /* pseudo-encoding */
36 };
37
38 static struct event_constraint intel_core_event_constraints[] __read_mostly =
39 {
40 INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
41 INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
42 INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
43 INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
44 INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
45 INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
46 EVENT_CONSTRAINT_END
47 };
48
49 static struct event_constraint intel_core2_event_constraints[] __read_mostly =
50 {
51 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
52 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
53 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
54 INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
55 INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
56 INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
57 INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
58 INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
59 INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
60 INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
61 INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
62 INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
63 INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
64 EVENT_CONSTRAINT_END
65 };
66
67 static struct event_constraint intel_nehalem_event_constraints[] __read_mostly =
68 {
69 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
70 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
71 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
72 INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
73 INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
74 INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
75 INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
76 INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
77 INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
78 INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
79 INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
80 EVENT_CONSTRAINT_END
81 };
82
83 static struct extra_reg intel_nehalem_extra_regs[] __read_mostly =
84 {
85 /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
86 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
87 INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
88 EVENT_EXTRA_END
89 };
90
91 static struct event_constraint intel_westmere_event_constraints[] __read_mostly =
92 {
93 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
94 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
95 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
96 INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
97 INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
98 INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
99 INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
100 EVENT_CONSTRAINT_END
101 };
102
103 static struct event_constraint intel_snb_event_constraints[] __read_mostly =
104 {
105 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
106 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
107 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
108 INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
109 INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
110 INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
111 INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
112 INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
113 INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
114 INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
115 INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
116 INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
117
118 INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
119 INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
120 INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
121 INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
122
123 EVENT_CONSTRAINT_END
124 };
125
126 static struct event_constraint intel_ivb_event_constraints[] __read_mostly =
127 {
128 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
129 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
130 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
131 INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */
132 INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMTPY */
133 INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */
134 INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
135 INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
136 INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
137 INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */
138 INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
139 INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
140 INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
141
142 INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
143 INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
144 INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
145 INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
146
147 EVENT_CONSTRAINT_END
148 };
149
150 static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
151 {
152 /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
153 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
154 INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0xffff, RSP_1),
155 INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
156 EVENT_EXTRA_END
157 };
158
159 static struct event_constraint intel_v1_event_constraints[] __read_mostly =
160 {
161 EVENT_CONSTRAINT_END
162 };
163
164 static struct event_constraint intel_gen_event_constraints[] __read_mostly =
165 {
166 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
167 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
168 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
169 EVENT_CONSTRAINT_END
170 };
171
172 static struct event_constraint intel_slm_event_constraints[] __read_mostly =
173 {
174 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
175 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
176 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
177 EVENT_CONSTRAINT_END
178 };
179
180 struct event_constraint intel_skl_event_constraints[] = {
181 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
182 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
183 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
184 INTEL_UEVENT_CONSTRAINT(0x1c0, 0x2), /* INST_RETIRED.PREC_DIST */
185 EVENT_CONSTRAINT_END
186 };
187
188 static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
189 /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
190 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
191 INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
192 INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
193 EVENT_EXTRA_END
194 };
195
196 static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
197 /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
198 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
199 INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
200 INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
201 EVENT_EXTRA_END
202 };
203
204 static struct extra_reg intel_skl_extra_regs[] __read_mostly = {
205 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
206 INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
207 INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
208 /*
209 * Note the low 8 bits eventsel code is not a continuous field, containing
210 * some #GPing bits. These are masked out.
211 */
212 INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE),
213 EVENT_EXTRA_END
214 };
215
216 EVENT_ATTR_STR(mem-loads, mem_ld_nhm, "event=0x0b,umask=0x10,ldlat=3");
217 EVENT_ATTR_STR(mem-loads, mem_ld_snb, "event=0xcd,umask=0x1,ldlat=3");
218 EVENT_ATTR_STR(mem-stores, mem_st_snb, "event=0xcd,umask=0x2");
219
220 struct attribute *nhm_events_attrs[] = {
221 EVENT_PTR(mem_ld_nhm),
222 NULL,
223 };
224
225 struct attribute *snb_events_attrs[] = {
226 EVENT_PTR(mem_ld_snb),
227 EVENT_PTR(mem_st_snb),
228 NULL,
229 };
230
231 static struct event_constraint intel_hsw_event_constraints[] = {
232 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
233 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
234 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
235 INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */
236 INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
237 INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
238 /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
239 INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
240 /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
241 INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
242 /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
243 INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),
244
245 INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
246 INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
247 INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
248 INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
249
250 EVENT_CONSTRAINT_END
251 };
252
253 struct event_constraint intel_bdw_event_constraints[] = {
254 FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
255 FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
256 FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
257 INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */
258 INTEL_UEVENT_CONSTRAINT(0x8a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */
259 EVENT_CONSTRAINT_END
260 };
261
intel_pmu_event_map(int hw_event)262 static u64 intel_pmu_event_map(int hw_event)
263 {
264 return intel_perfmon_event_map[hw_event];
265 }
266
267 /*
268 * Notes on the events:
269 * - data reads do not include code reads (comparable to earlier tables)
270 * - data counts include speculative execution (except L1 write, dtlb, bpu)
271 * - remote node access includes remote memory, remote cache, remote mmio.
272 * - prefetches are not included in the counts.
273 * - icache miss does not include decoded icache
274 */
275
276 #define SKL_DEMAND_DATA_RD BIT_ULL(0)
277 #define SKL_DEMAND_RFO BIT_ULL(1)
278 #define SKL_ANY_RESPONSE BIT_ULL(16)
279 #define SKL_SUPPLIER_NONE BIT_ULL(17)
280 #define SKL_L3_MISS_LOCAL_DRAM BIT_ULL(26)
281 #define SKL_L3_MISS_REMOTE_HOP0_DRAM BIT_ULL(27)
282 #define SKL_L3_MISS_REMOTE_HOP1_DRAM BIT_ULL(28)
283 #define SKL_L3_MISS_REMOTE_HOP2P_DRAM BIT_ULL(29)
284 #define SKL_L3_MISS (SKL_L3_MISS_LOCAL_DRAM| \
285 SKL_L3_MISS_REMOTE_HOP0_DRAM| \
286 SKL_L3_MISS_REMOTE_HOP1_DRAM| \
287 SKL_L3_MISS_REMOTE_HOP2P_DRAM)
288 #define SKL_SPL_HIT BIT_ULL(30)
289 #define SKL_SNOOP_NONE BIT_ULL(31)
290 #define SKL_SNOOP_NOT_NEEDED BIT_ULL(32)
291 #define SKL_SNOOP_MISS BIT_ULL(33)
292 #define SKL_SNOOP_HIT_NO_FWD BIT_ULL(34)
293 #define SKL_SNOOP_HIT_WITH_FWD BIT_ULL(35)
294 #define SKL_SNOOP_HITM BIT_ULL(36)
295 #define SKL_SNOOP_NON_DRAM BIT_ULL(37)
296 #define SKL_ANY_SNOOP (SKL_SPL_HIT|SKL_SNOOP_NONE| \
297 SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
298 SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
299 SKL_SNOOP_HITM|SKL_SNOOP_NON_DRAM)
300 #define SKL_DEMAND_READ SKL_DEMAND_DATA_RD
301 #define SKL_SNOOP_DRAM (SKL_SNOOP_NONE| \
302 SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
303 SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
304 SKL_SNOOP_HITM|SKL_SPL_HIT)
305 #define SKL_DEMAND_WRITE SKL_DEMAND_RFO
306 #define SKL_LLC_ACCESS SKL_ANY_RESPONSE
307 #define SKL_L3_MISS_REMOTE (SKL_L3_MISS_REMOTE_HOP0_DRAM| \
308 SKL_L3_MISS_REMOTE_HOP1_DRAM| \
309 SKL_L3_MISS_REMOTE_HOP2P_DRAM)
310
311 static __initconst const u64 skl_hw_cache_event_ids
312 [PERF_COUNT_HW_CACHE_MAX]
313 [PERF_COUNT_HW_CACHE_OP_MAX]
314 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
315 {
316 [ C(L1D ) ] = {
317 [ C(OP_READ) ] = {
318 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_INST_RETIRED.ALL_LOADS */
319 [ C(RESULT_MISS) ] = 0x151, /* L1D.REPLACEMENT */
320 },
321 [ C(OP_WRITE) ] = {
322 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_INST_RETIRED.ALL_STORES */
323 [ C(RESULT_MISS) ] = 0x0,
324 },
325 [ C(OP_PREFETCH) ] = {
326 [ C(RESULT_ACCESS) ] = 0x0,
327 [ C(RESULT_MISS) ] = 0x0,
328 },
329 },
330 [ C(L1I ) ] = {
331 [ C(OP_READ) ] = {
332 [ C(RESULT_ACCESS) ] = 0x0,
333 [ C(RESULT_MISS) ] = 0x283, /* ICACHE_64B.MISS */
334 },
335 [ C(OP_WRITE) ] = {
336 [ C(RESULT_ACCESS) ] = -1,
337 [ C(RESULT_MISS) ] = -1,
338 },
339 [ C(OP_PREFETCH) ] = {
340 [ C(RESULT_ACCESS) ] = 0x0,
341 [ C(RESULT_MISS) ] = 0x0,
342 },
343 },
344 [ C(LL ) ] = {
345 [ C(OP_READ) ] = {
346 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
347 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
348 },
349 [ C(OP_WRITE) ] = {
350 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
351 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
352 },
353 [ C(OP_PREFETCH) ] = {
354 [ C(RESULT_ACCESS) ] = 0x0,
355 [ C(RESULT_MISS) ] = 0x0,
356 },
357 },
358 [ C(DTLB) ] = {
359 [ C(OP_READ) ] = {
360 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_INST_RETIRED.ALL_LOADS */
361 [ C(RESULT_MISS) ] = 0x608, /* DTLB_LOAD_MISSES.WALK_COMPLETED */
362 },
363 [ C(OP_WRITE) ] = {
364 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_INST_RETIRED.ALL_STORES */
365 [ C(RESULT_MISS) ] = 0x649, /* DTLB_STORE_MISSES.WALK_COMPLETED */
366 },
367 [ C(OP_PREFETCH) ] = {
368 [ C(RESULT_ACCESS) ] = 0x0,
369 [ C(RESULT_MISS) ] = 0x0,
370 },
371 },
372 [ C(ITLB) ] = {
373 [ C(OP_READ) ] = {
374 [ C(RESULT_ACCESS) ] = 0x2085, /* ITLB_MISSES.STLB_HIT */
375 [ C(RESULT_MISS) ] = 0xe85, /* ITLB_MISSES.WALK_COMPLETED */
376 },
377 [ C(OP_WRITE) ] = {
378 [ C(RESULT_ACCESS) ] = -1,
379 [ C(RESULT_MISS) ] = -1,
380 },
381 [ C(OP_PREFETCH) ] = {
382 [ C(RESULT_ACCESS) ] = -1,
383 [ C(RESULT_MISS) ] = -1,
384 },
385 },
386 [ C(BPU ) ] = {
387 [ C(OP_READ) ] = {
388 [ C(RESULT_ACCESS) ] = 0xc4, /* BR_INST_RETIRED.ALL_BRANCHES */
389 [ C(RESULT_MISS) ] = 0xc5, /* BR_MISP_RETIRED.ALL_BRANCHES */
390 },
391 [ C(OP_WRITE) ] = {
392 [ C(RESULT_ACCESS) ] = -1,
393 [ C(RESULT_MISS) ] = -1,
394 },
395 [ C(OP_PREFETCH) ] = {
396 [ C(RESULT_ACCESS) ] = -1,
397 [ C(RESULT_MISS) ] = -1,
398 },
399 },
400 [ C(NODE) ] = {
401 [ C(OP_READ) ] = {
402 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
403 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
404 },
405 [ C(OP_WRITE) ] = {
406 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
407 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
408 },
409 [ C(OP_PREFETCH) ] = {
410 [ C(RESULT_ACCESS) ] = 0x0,
411 [ C(RESULT_MISS) ] = 0x0,
412 },
413 },
414 };
415
416 static __initconst const u64 skl_hw_cache_extra_regs
417 [PERF_COUNT_HW_CACHE_MAX]
418 [PERF_COUNT_HW_CACHE_OP_MAX]
419 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
420 {
421 [ C(LL ) ] = {
422 [ C(OP_READ) ] = {
423 [ C(RESULT_ACCESS) ] = SKL_DEMAND_READ|
424 SKL_LLC_ACCESS|SKL_ANY_SNOOP,
425 [ C(RESULT_MISS) ] = SKL_DEMAND_READ|
426 SKL_L3_MISS|SKL_ANY_SNOOP|
427 SKL_SUPPLIER_NONE,
428 },
429 [ C(OP_WRITE) ] = {
430 [ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
431 SKL_LLC_ACCESS|SKL_ANY_SNOOP,
432 [ C(RESULT_MISS) ] = SKL_DEMAND_WRITE|
433 SKL_L3_MISS|SKL_ANY_SNOOP|
434 SKL_SUPPLIER_NONE,
435 },
436 [ C(OP_PREFETCH) ] = {
437 [ C(RESULT_ACCESS) ] = 0x0,
438 [ C(RESULT_MISS) ] = 0x0,
439 },
440 },
441 [ C(NODE) ] = {
442 [ C(OP_READ) ] = {
443 [ C(RESULT_ACCESS) ] = SKL_DEMAND_READ|
444 SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
445 [ C(RESULT_MISS) ] = SKL_DEMAND_READ|
446 SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
447 },
448 [ C(OP_WRITE) ] = {
449 [ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
450 SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
451 [ C(RESULT_MISS) ] = SKL_DEMAND_WRITE|
452 SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
453 },
454 [ C(OP_PREFETCH) ] = {
455 [ C(RESULT_ACCESS) ] = 0x0,
456 [ C(RESULT_MISS) ] = 0x0,
457 },
458 },
459 };
460
461 #define SNB_DMND_DATA_RD (1ULL << 0)
462 #define SNB_DMND_RFO (1ULL << 1)
463 #define SNB_DMND_IFETCH (1ULL << 2)
464 #define SNB_DMND_WB (1ULL << 3)
465 #define SNB_PF_DATA_RD (1ULL << 4)
466 #define SNB_PF_RFO (1ULL << 5)
467 #define SNB_PF_IFETCH (1ULL << 6)
468 #define SNB_LLC_DATA_RD (1ULL << 7)
469 #define SNB_LLC_RFO (1ULL << 8)
470 #define SNB_LLC_IFETCH (1ULL << 9)
471 #define SNB_BUS_LOCKS (1ULL << 10)
472 #define SNB_STRM_ST (1ULL << 11)
473 #define SNB_OTHER (1ULL << 15)
474 #define SNB_RESP_ANY (1ULL << 16)
475 #define SNB_NO_SUPP (1ULL << 17)
476 #define SNB_LLC_HITM (1ULL << 18)
477 #define SNB_LLC_HITE (1ULL << 19)
478 #define SNB_LLC_HITS (1ULL << 20)
479 #define SNB_LLC_HITF (1ULL << 21)
480 #define SNB_LOCAL (1ULL << 22)
481 #define SNB_REMOTE (0xffULL << 23)
482 #define SNB_SNP_NONE (1ULL << 31)
483 #define SNB_SNP_NOT_NEEDED (1ULL << 32)
484 #define SNB_SNP_MISS (1ULL << 33)
485 #define SNB_NO_FWD (1ULL << 34)
486 #define SNB_SNP_FWD (1ULL << 35)
487 #define SNB_HITM (1ULL << 36)
488 #define SNB_NON_DRAM (1ULL << 37)
489
490 #define SNB_DMND_READ (SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
491 #define SNB_DMND_WRITE (SNB_DMND_RFO|SNB_LLC_RFO)
492 #define SNB_DMND_PREFETCH (SNB_PF_DATA_RD|SNB_PF_RFO)
493
494 #define SNB_SNP_ANY (SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
495 SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
496 SNB_HITM)
497
498 #define SNB_DRAM_ANY (SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
499 #define SNB_DRAM_REMOTE (SNB_REMOTE|SNB_SNP_ANY)
500
501 #define SNB_L3_ACCESS SNB_RESP_ANY
502 #define SNB_L3_MISS (SNB_DRAM_ANY|SNB_NON_DRAM)
503
504 static __initconst const u64 snb_hw_cache_extra_regs
505 [PERF_COUNT_HW_CACHE_MAX]
506 [PERF_COUNT_HW_CACHE_OP_MAX]
507 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
508 {
509 [ C(LL ) ] = {
510 [ C(OP_READ) ] = {
511 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
512 [ C(RESULT_MISS) ] = SNB_DMND_READ|SNB_L3_MISS,
513 },
514 [ C(OP_WRITE) ] = {
515 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
516 [ C(RESULT_MISS) ] = SNB_DMND_WRITE|SNB_L3_MISS,
517 },
518 [ C(OP_PREFETCH) ] = {
519 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
520 [ C(RESULT_MISS) ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
521 },
522 },
523 [ C(NODE) ] = {
524 [ C(OP_READ) ] = {
525 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
526 [ C(RESULT_MISS) ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
527 },
528 [ C(OP_WRITE) ] = {
529 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
530 [ C(RESULT_MISS) ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
531 },
532 [ C(OP_PREFETCH) ] = {
533 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
534 [ C(RESULT_MISS) ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
535 },
536 },
537 };
538
539 static __initconst const u64 snb_hw_cache_event_ids
540 [PERF_COUNT_HW_CACHE_MAX]
541 [PERF_COUNT_HW_CACHE_OP_MAX]
542 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
543 {
544 [ C(L1D) ] = {
545 [ C(OP_READ) ] = {
546 [ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS */
547 [ C(RESULT_MISS) ] = 0x0151, /* L1D.REPLACEMENT */
548 },
549 [ C(OP_WRITE) ] = {
550 [ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES */
551 [ C(RESULT_MISS) ] = 0x0851, /* L1D.ALL_M_REPLACEMENT */
552 },
553 [ C(OP_PREFETCH) ] = {
554 [ C(RESULT_ACCESS) ] = 0x0,
555 [ C(RESULT_MISS) ] = 0x024e, /* HW_PRE_REQ.DL1_MISS */
556 },
557 },
558 [ C(L1I ) ] = {
559 [ C(OP_READ) ] = {
560 [ C(RESULT_ACCESS) ] = 0x0,
561 [ C(RESULT_MISS) ] = 0x0280, /* ICACHE.MISSES */
562 },
563 [ C(OP_WRITE) ] = {
564 [ C(RESULT_ACCESS) ] = -1,
565 [ C(RESULT_MISS) ] = -1,
566 },
567 [ C(OP_PREFETCH) ] = {
568 [ C(RESULT_ACCESS) ] = 0x0,
569 [ C(RESULT_MISS) ] = 0x0,
570 },
571 },
572 [ C(LL ) ] = {
573 [ C(OP_READ) ] = {
574 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
575 [ C(RESULT_ACCESS) ] = 0x01b7,
576 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
577 [ C(RESULT_MISS) ] = 0x01b7,
578 },
579 [ C(OP_WRITE) ] = {
580 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
581 [ C(RESULT_ACCESS) ] = 0x01b7,
582 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
583 [ C(RESULT_MISS) ] = 0x01b7,
584 },
585 [ C(OP_PREFETCH) ] = {
586 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
587 [ C(RESULT_ACCESS) ] = 0x01b7,
588 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
589 [ C(RESULT_MISS) ] = 0x01b7,
590 },
591 },
592 [ C(DTLB) ] = {
593 [ C(OP_READ) ] = {
594 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
595 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
596 },
597 [ C(OP_WRITE) ] = {
598 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
599 [ C(RESULT_MISS) ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
600 },
601 [ C(OP_PREFETCH) ] = {
602 [ C(RESULT_ACCESS) ] = 0x0,
603 [ C(RESULT_MISS) ] = 0x0,
604 },
605 },
606 [ C(ITLB) ] = {
607 [ C(OP_READ) ] = {
608 [ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT */
609 [ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK */
610 },
611 [ C(OP_WRITE) ] = {
612 [ C(RESULT_ACCESS) ] = -1,
613 [ C(RESULT_MISS) ] = -1,
614 },
615 [ C(OP_PREFETCH) ] = {
616 [ C(RESULT_ACCESS) ] = -1,
617 [ C(RESULT_MISS) ] = -1,
618 },
619 },
620 [ C(BPU ) ] = {
621 [ C(OP_READ) ] = {
622 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
623 [ C(RESULT_MISS) ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
624 },
625 [ C(OP_WRITE) ] = {
626 [ C(RESULT_ACCESS) ] = -1,
627 [ C(RESULT_MISS) ] = -1,
628 },
629 [ C(OP_PREFETCH) ] = {
630 [ C(RESULT_ACCESS) ] = -1,
631 [ C(RESULT_MISS) ] = -1,
632 },
633 },
634 [ C(NODE) ] = {
635 [ C(OP_READ) ] = {
636 [ C(RESULT_ACCESS) ] = 0x01b7,
637 [ C(RESULT_MISS) ] = 0x01b7,
638 },
639 [ C(OP_WRITE) ] = {
640 [ C(RESULT_ACCESS) ] = 0x01b7,
641 [ C(RESULT_MISS) ] = 0x01b7,
642 },
643 [ C(OP_PREFETCH) ] = {
644 [ C(RESULT_ACCESS) ] = 0x01b7,
645 [ C(RESULT_MISS) ] = 0x01b7,
646 },
647 },
648
649 };
650
651 /*
652 * Notes on the events:
653 * - data reads do not include code reads (comparable to earlier tables)
654 * - data counts include speculative execution (except L1 write, dtlb, bpu)
655 * - remote node access includes remote memory, remote cache, remote mmio.
656 * - prefetches are not included in the counts because they are not
657 * reliably counted.
658 */
659
660 #define HSW_DEMAND_DATA_RD BIT_ULL(0)
661 #define HSW_DEMAND_RFO BIT_ULL(1)
662 #define HSW_ANY_RESPONSE BIT_ULL(16)
663 #define HSW_SUPPLIER_NONE BIT_ULL(17)
664 #define HSW_L3_MISS_LOCAL_DRAM BIT_ULL(22)
665 #define HSW_L3_MISS_REMOTE_HOP0 BIT_ULL(27)
666 #define HSW_L3_MISS_REMOTE_HOP1 BIT_ULL(28)
667 #define HSW_L3_MISS_REMOTE_HOP2P BIT_ULL(29)
668 #define HSW_L3_MISS (HSW_L3_MISS_LOCAL_DRAM| \
669 HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
670 HSW_L3_MISS_REMOTE_HOP2P)
671 #define HSW_SNOOP_NONE BIT_ULL(31)
672 #define HSW_SNOOP_NOT_NEEDED BIT_ULL(32)
673 #define HSW_SNOOP_MISS BIT_ULL(33)
674 #define HSW_SNOOP_HIT_NO_FWD BIT_ULL(34)
675 #define HSW_SNOOP_HIT_WITH_FWD BIT_ULL(35)
676 #define HSW_SNOOP_HITM BIT_ULL(36)
677 #define HSW_SNOOP_NON_DRAM BIT_ULL(37)
678 #define HSW_ANY_SNOOP (HSW_SNOOP_NONE| \
679 HSW_SNOOP_NOT_NEEDED|HSW_SNOOP_MISS| \
680 HSW_SNOOP_HIT_NO_FWD|HSW_SNOOP_HIT_WITH_FWD| \
681 HSW_SNOOP_HITM|HSW_SNOOP_NON_DRAM)
682 #define HSW_SNOOP_DRAM (HSW_ANY_SNOOP & ~HSW_SNOOP_NON_DRAM)
683 #define HSW_DEMAND_READ HSW_DEMAND_DATA_RD
684 #define HSW_DEMAND_WRITE HSW_DEMAND_RFO
685 #define HSW_L3_MISS_REMOTE (HSW_L3_MISS_REMOTE_HOP0|\
686 HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
687 #define HSW_LLC_ACCESS HSW_ANY_RESPONSE
688
689 #define BDW_L3_MISS_LOCAL BIT(26)
690 #define BDW_L3_MISS (BDW_L3_MISS_LOCAL| \
691 HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
692 HSW_L3_MISS_REMOTE_HOP2P)
693
694
695 static __initconst const u64 hsw_hw_cache_event_ids
696 [PERF_COUNT_HW_CACHE_MAX]
697 [PERF_COUNT_HW_CACHE_OP_MAX]
698 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
699 {
700 [ C(L1D ) ] = {
701 [ C(OP_READ) ] = {
702 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
703 [ C(RESULT_MISS) ] = 0x151, /* L1D.REPLACEMENT */
704 },
705 [ C(OP_WRITE) ] = {
706 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
707 [ C(RESULT_MISS) ] = 0x0,
708 },
709 [ C(OP_PREFETCH) ] = {
710 [ C(RESULT_ACCESS) ] = 0x0,
711 [ C(RESULT_MISS) ] = 0x0,
712 },
713 },
714 [ C(L1I ) ] = {
715 [ C(OP_READ) ] = {
716 [ C(RESULT_ACCESS) ] = 0x0,
717 [ C(RESULT_MISS) ] = 0x280, /* ICACHE.MISSES */
718 },
719 [ C(OP_WRITE) ] = {
720 [ C(RESULT_ACCESS) ] = -1,
721 [ C(RESULT_MISS) ] = -1,
722 },
723 [ C(OP_PREFETCH) ] = {
724 [ C(RESULT_ACCESS) ] = 0x0,
725 [ C(RESULT_MISS) ] = 0x0,
726 },
727 },
728 [ C(LL ) ] = {
729 [ C(OP_READ) ] = {
730 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
731 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
732 },
733 [ C(OP_WRITE) ] = {
734 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
735 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
736 },
737 [ C(OP_PREFETCH) ] = {
738 [ C(RESULT_ACCESS) ] = 0x0,
739 [ C(RESULT_MISS) ] = 0x0,
740 },
741 },
742 [ C(DTLB) ] = {
743 [ C(OP_READ) ] = {
744 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */
745 [ C(RESULT_MISS) ] = 0x108, /* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */
746 },
747 [ C(OP_WRITE) ] = {
748 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */
749 [ C(RESULT_MISS) ] = 0x149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
750 },
751 [ C(OP_PREFETCH) ] = {
752 [ C(RESULT_ACCESS) ] = 0x0,
753 [ C(RESULT_MISS) ] = 0x0,
754 },
755 },
756 [ C(ITLB) ] = {
757 [ C(OP_READ) ] = {
758 [ C(RESULT_ACCESS) ] = 0x6085, /* ITLB_MISSES.STLB_HIT */
759 [ C(RESULT_MISS) ] = 0x185, /* ITLB_MISSES.MISS_CAUSES_A_WALK */
760 },
761 [ C(OP_WRITE) ] = {
762 [ C(RESULT_ACCESS) ] = -1,
763 [ C(RESULT_MISS) ] = -1,
764 },
765 [ C(OP_PREFETCH) ] = {
766 [ C(RESULT_ACCESS) ] = -1,
767 [ C(RESULT_MISS) ] = -1,
768 },
769 },
770 [ C(BPU ) ] = {
771 [ C(OP_READ) ] = {
772 [ C(RESULT_ACCESS) ] = 0xc4, /* BR_INST_RETIRED.ALL_BRANCHES */
773 [ C(RESULT_MISS) ] = 0xc5, /* BR_MISP_RETIRED.ALL_BRANCHES */
774 },
775 [ C(OP_WRITE) ] = {
776 [ C(RESULT_ACCESS) ] = -1,
777 [ C(RESULT_MISS) ] = -1,
778 },
779 [ C(OP_PREFETCH) ] = {
780 [ C(RESULT_ACCESS) ] = -1,
781 [ C(RESULT_MISS) ] = -1,
782 },
783 },
784 [ C(NODE) ] = {
785 [ C(OP_READ) ] = {
786 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
787 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
788 },
789 [ C(OP_WRITE) ] = {
790 [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE */
791 [ C(RESULT_MISS) ] = 0x1b7, /* OFFCORE_RESPONSE */
792 },
793 [ C(OP_PREFETCH) ] = {
794 [ C(RESULT_ACCESS) ] = 0x0,
795 [ C(RESULT_MISS) ] = 0x0,
796 },
797 },
798 };
799
800 static __initconst const u64 hsw_hw_cache_extra_regs
801 [PERF_COUNT_HW_CACHE_MAX]
802 [PERF_COUNT_HW_CACHE_OP_MAX]
803 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
804 {
805 [ C(LL ) ] = {
806 [ C(OP_READ) ] = {
807 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
808 HSW_LLC_ACCESS,
809 [ C(RESULT_MISS) ] = HSW_DEMAND_READ|
810 HSW_L3_MISS|HSW_ANY_SNOOP,
811 },
812 [ C(OP_WRITE) ] = {
813 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
814 HSW_LLC_ACCESS,
815 [ C(RESULT_MISS) ] = HSW_DEMAND_WRITE|
816 HSW_L3_MISS|HSW_ANY_SNOOP,
817 },
818 [ C(OP_PREFETCH) ] = {
819 [ C(RESULT_ACCESS) ] = 0x0,
820 [ C(RESULT_MISS) ] = 0x0,
821 },
822 },
823 [ C(NODE) ] = {
824 [ C(OP_READ) ] = {
825 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
826 HSW_L3_MISS_LOCAL_DRAM|
827 HSW_SNOOP_DRAM,
828 [ C(RESULT_MISS) ] = HSW_DEMAND_READ|
829 HSW_L3_MISS_REMOTE|
830 HSW_SNOOP_DRAM,
831 },
832 [ C(OP_WRITE) ] = {
833 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
834 HSW_L3_MISS_LOCAL_DRAM|
835 HSW_SNOOP_DRAM,
836 [ C(RESULT_MISS) ] = HSW_DEMAND_WRITE|
837 HSW_L3_MISS_REMOTE|
838 HSW_SNOOP_DRAM,
839 },
840 [ C(OP_PREFETCH) ] = {
841 [ C(RESULT_ACCESS) ] = 0x0,
842 [ C(RESULT_MISS) ] = 0x0,
843 },
844 },
845 };
846
847 static __initconst const u64 westmere_hw_cache_event_ids
848 [PERF_COUNT_HW_CACHE_MAX]
849 [PERF_COUNT_HW_CACHE_OP_MAX]
850 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
851 {
852 [ C(L1D) ] = {
853 [ C(OP_READ) ] = {
854 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
855 [ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
856 },
857 [ C(OP_WRITE) ] = {
858 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
859 [ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
860 },
861 [ C(OP_PREFETCH) ] = {
862 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
863 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
864 },
865 },
866 [ C(L1I ) ] = {
867 [ C(OP_READ) ] = {
868 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
869 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
870 },
871 [ C(OP_WRITE) ] = {
872 [ C(RESULT_ACCESS) ] = -1,
873 [ C(RESULT_MISS) ] = -1,
874 },
875 [ C(OP_PREFETCH) ] = {
876 [ C(RESULT_ACCESS) ] = 0x0,
877 [ C(RESULT_MISS) ] = 0x0,
878 },
879 },
880 [ C(LL ) ] = {
881 [ C(OP_READ) ] = {
882 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
883 [ C(RESULT_ACCESS) ] = 0x01b7,
884 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
885 [ C(RESULT_MISS) ] = 0x01b7,
886 },
887 /*
888 * Use RFO, not WRITEBACK, because a write miss would typically occur
889 * on RFO.
890 */
891 [ C(OP_WRITE) ] = {
892 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
893 [ C(RESULT_ACCESS) ] = 0x01b7,
894 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
895 [ C(RESULT_MISS) ] = 0x01b7,
896 },
897 [ C(OP_PREFETCH) ] = {
898 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
899 [ C(RESULT_ACCESS) ] = 0x01b7,
900 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
901 [ C(RESULT_MISS) ] = 0x01b7,
902 },
903 },
904 [ C(DTLB) ] = {
905 [ C(OP_READ) ] = {
906 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
907 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
908 },
909 [ C(OP_WRITE) ] = {
910 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
911 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
912 },
913 [ C(OP_PREFETCH) ] = {
914 [ C(RESULT_ACCESS) ] = 0x0,
915 [ C(RESULT_MISS) ] = 0x0,
916 },
917 },
918 [ C(ITLB) ] = {
919 [ C(OP_READ) ] = {
920 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
921 [ C(RESULT_MISS) ] = 0x0185, /* ITLB_MISSES.ANY */
922 },
923 [ C(OP_WRITE) ] = {
924 [ C(RESULT_ACCESS) ] = -1,
925 [ C(RESULT_MISS) ] = -1,
926 },
927 [ C(OP_PREFETCH) ] = {
928 [ C(RESULT_ACCESS) ] = -1,
929 [ C(RESULT_MISS) ] = -1,
930 },
931 },
932 [ C(BPU ) ] = {
933 [ C(OP_READ) ] = {
934 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
935 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
936 },
937 [ C(OP_WRITE) ] = {
938 [ C(RESULT_ACCESS) ] = -1,
939 [ C(RESULT_MISS) ] = -1,
940 },
941 [ C(OP_PREFETCH) ] = {
942 [ C(RESULT_ACCESS) ] = -1,
943 [ C(RESULT_MISS) ] = -1,
944 },
945 },
946 [ C(NODE) ] = {
947 [ C(OP_READ) ] = {
948 [ C(RESULT_ACCESS) ] = 0x01b7,
949 [ C(RESULT_MISS) ] = 0x01b7,
950 },
951 [ C(OP_WRITE) ] = {
952 [ C(RESULT_ACCESS) ] = 0x01b7,
953 [ C(RESULT_MISS) ] = 0x01b7,
954 },
955 [ C(OP_PREFETCH) ] = {
956 [ C(RESULT_ACCESS) ] = 0x01b7,
957 [ C(RESULT_MISS) ] = 0x01b7,
958 },
959 },
960 };
961
962 /*
963 * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
964 * See IA32 SDM Vol 3B 30.6.1.3
965 */
966
967 #define NHM_DMND_DATA_RD (1 << 0)
968 #define NHM_DMND_RFO (1 << 1)
969 #define NHM_DMND_IFETCH (1 << 2)
970 #define NHM_DMND_WB (1 << 3)
971 #define NHM_PF_DATA_RD (1 << 4)
972 #define NHM_PF_DATA_RFO (1 << 5)
973 #define NHM_PF_IFETCH (1 << 6)
974 #define NHM_OFFCORE_OTHER (1 << 7)
975 #define NHM_UNCORE_HIT (1 << 8)
976 #define NHM_OTHER_CORE_HIT_SNP (1 << 9)
977 #define NHM_OTHER_CORE_HITM (1 << 10)
978 /* reserved */
979 #define NHM_REMOTE_CACHE_FWD (1 << 12)
980 #define NHM_REMOTE_DRAM (1 << 13)
981 #define NHM_LOCAL_DRAM (1 << 14)
982 #define NHM_NON_DRAM (1 << 15)
983
984 #define NHM_LOCAL (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
985 #define NHM_REMOTE (NHM_REMOTE_DRAM)
986
987 #define NHM_DMND_READ (NHM_DMND_DATA_RD)
988 #define NHM_DMND_WRITE (NHM_DMND_RFO|NHM_DMND_WB)
989 #define NHM_DMND_PREFETCH (NHM_PF_DATA_RD|NHM_PF_DATA_RFO)
990
991 #define NHM_L3_HIT (NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
992 #define NHM_L3_MISS (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
993 #define NHM_L3_ACCESS (NHM_L3_HIT|NHM_L3_MISS)
994
995 static __initconst const u64 nehalem_hw_cache_extra_regs
996 [PERF_COUNT_HW_CACHE_MAX]
997 [PERF_COUNT_HW_CACHE_OP_MAX]
998 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
999 {
1000 [ C(LL ) ] = {
1001 [ C(OP_READ) ] = {
1002 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
1003 [ C(RESULT_MISS) ] = NHM_DMND_READ|NHM_L3_MISS,
1004 },
1005 [ C(OP_WRITE) ] = {
1006 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
1007 [ C(RESULT_MISS) ] = NHM_DMND_WRITE|NHM_L3_MISS,
1008 },
1009 [ C(OP_PREFETCH) ] = {
1010 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
1011 [ C(RESULT_MISS) ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
1012 },
1013 },
1014 [ C(NODE) ] = {
1015 [ C(OP_READ) ] = {
1016 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
1017 [ C(RESULT_MISS) ] = NHM_DMND_READ|NHM_REMOTE,
1018 },
1019 [ C(OP_WRITE) ] = {
1020 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
1021 [ C(RESULT_MISS) ] = NHM_DMND_WRITE|NHM_REMOTE,
1022 },
1023 [ C(OP_PREFETCH) ] = {
1024 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
1025 [ C(RESULT_MISS) ] = NHM_DMND_PREFETCH|NHM_REMOTE,
1026 },
1027 },
1028 };
1029
1030 static __initconst const u64 nehalem_hw_cache_event_ids
1031 [PERF_COUNT_HW_CACHE_MAX]
1032 [PERF_COUNT_HW_CACHE_OP_MAX]
1033 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1034 {
1035 [ C(L1D) ] = {
1036 [ C(OP_READ) ] = {
1037 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS */
1038 [ C(RESULT_MISS) ] = 0x0151, /* L1D.REPL */
1039 },
1040 [ C(OP_WRITE) ] = {
1041 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES */
1042 [ C(RESULT_MISS) ] = 0x0251, /* L1D.M_REPL */
1043 },
1044 [ C(OP_PREFETCH) ] = {
1045 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS */
1046 [ C(RESULT_MISS) ] = 0x024e, /* L1D_PREFETCH.MISS */
1047 },
1048 },
1049 [ C(L1I ) ] = {
1050 [ C(OP_READ) ] = {
1051 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
1052 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
1053 },
1054 [ C(OP_WRITE) ] = {
1055 [ C(RESULT_ACCESS) ] = -1,
1056 [ C(RESULT_MISS) ] = -1,
1057 },
1058 [ C(OP_PREFETCH) ] = {
1059 [ C(RESULT_ACCESS) ] = 0x0,
1060 [ C(RESULT_MISS) ] = 0x0,
1061 },
1062 },
1063 [ C(LL ) ] = {
1064 [ C(OP_READ) ] = {
1065 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
1066 [ C(RESULT_ACCESS) ] = 0x01b7,
1067 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
1068 [ C(RESULT_MISS) ] = 0x01b7,
1069 },
1070 /*
1071 * Use RFO, not WRITEBACK, because a write miss would typically occur
1072 * on RFO.
1073 */
1074 [ C(OP_WRITE) ] = {
1075 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
1076 [ C(RESULT_ACCESS) ] = 0x01b7,
1077 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
1078 [ C(RESULT_MISS) ] = 0x01b7,
1079 },
1080 [ C(OP_PREFETCH) ] = {
1081 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
1082 [ C(RESULT_ACCESS) ] = 0x01b7,
1083 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
1084 [ C(RESULT_MISS) ] = 0x01b7,
1085 },
1086 },
1087 [ C(DTLB) ] = {
1088 [ C(OP_READ) ] = {
1089 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
1090 [ C(RESULT_MISS) ] = 0x0108, /* DTLB_LOAD_MISSES.ANY */
1091 },
1092 [ C(OP_WRITE) ] = {
1093 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
1094 [ C(RESULT_MISS) ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS */
1095 },
1096 [ C(OP_PREFETCH) ] = {
1097 [ C(RESULT_ACCESS) ] = 0x0,
1098 [ C(RESULT_MISS) ] = 0x0,
1099 },
1100 },
1101 [ C(ITLB) ] = {
1102 [ C(OP_READ) ] = {
1103 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P */
1104 [ C(RESULT_MISS) ] = 0x20c8, /* ITLB_MISS_RETIRED */
1105 },
1106 [ C(OP_WRITE) ] = {
1107 [ C(RESULT_ACCESS) ] = -1,
1108 [ C(RESULT_MISS) ] = -1,
1109 },
1110 [ C(OP_PREFETCH) ] = {
1111 [ C(RESULT_ACCESS) ] = -1,
1112 [ C(RESULT_MISS) ] = -1,
1113 },
1114 },
1115 [ C(BPU ) ] = {
1116 [ C(OP_READ) ] = {
1117 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
1118 [ C(RESULT_MISS) ] = 0x03e8, /* BPU_CLEARS.ANY */
1119 },
1120 [ C(OP_WRITE) ] = {
1121 [ C(RESULT_ACCESS) ] = -1,
1122 [ C(RESULT_MISS) ] = -1,
1123 },
1124 [ C(OP_PREFETCH) ] = {
1125 [ C(RESULT_ACCESS) ] = -1,
1126 [ C(RESULT_MISS) ] = -1,
1127 },
1128 },
1129 [ C(NODE) ] = {
1130 [ C(OP_READ) ] = {
1131 [ C(RESULT_ACCESS) ] = 0x01b7,
1132 [ C(RESULT_MISS) ] = 0x01b7,
1133 },
1134 [ C(OP_WRITE) ] = {
1135 [ C(RESULT_ACCESS) ] = 0x01b7,
1136 [ C(RESULT_MISS) ] = 0x01b7,
1137 },
1138 [ C(OP_PREFETCH) ] = {
1139 [ C(RESULT_ACCESS) ] = 0x01b7,
1140 [ C(RESULT_MISS) ] = 0x01b7,
1141 },
1142 },
1143 };
1144
1145 static __initconst const u64 core2_hw_cache_event_ids
1146 [PERF_COUNT_HW_CACHE_MAX]
1147 [PERF_COUNT_HW_CACHE_OP_MAX]
1148 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1149 {
1150 [ C(L1D) ] = {
1151 [ C(OP_READ) ] = {
1152 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI */
1153 [ C(RESULT_MISS) ] = 0x0140, /* L1D_CACHE_LD.I_STATE */
1154 },
1155 [ C(OP_WRITE) ] = {
1156 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI */
1157 [ C(RESULT_MISS) ] = 0x0141, /* L1D_CACHE_ST.I_STATE */
1158 },
1159 [ C(OP_PREFETCH) ] = {
1160 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS */
1161 [ C(RESULT_MISS) ] = 0,
1162 },
1163 },
1164 [ C(L1I ) ] = {
1165 [ C(OP_READ) ] = {
1166 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS */
1167 [ C(RESULT_MISS) ] = 0x0081, /* L1I.MISSES */
1168 },
1169 [ C(OP_WRITE) ] = {
1170 [ C(RESULT_ACCESS) ] = -1,
1171 [ C(RESULT_MISS) ] = -1,
1172 },
1173 [ C(OP_PREFETCH) ] = {
1174 [ C(RESULT_ACCESS) ] = 0,
1175 [ C(RESULT_MISS) ] = 0,
1176 },
1177 },
1178 [ C(LL ) ] = {
1179 [ C(OP_READ) ] = {
1180 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
1181 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
1182 },
1183 [ C(OP_WRITE) ] = {
1184 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
1185 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
1186 },
1187 [ C(OP_PREFETCH) ] = {
1188 [ C(RESULT_ACCESS) ] = 0,
1189 [ C(RESULT_MISS) ] = 0,
1190 },
1191 },
1192 [ C(DTLB) ] = {
1193 [ C(OP_READ) ] = {
1194 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI (alias) */
1195 [ C(RESULT_MISS) ] = 0x0208, /* DTLB_MISSES.MISS_LD */
1196 },
1197 [ C(OP_WRITE) ] = {
1198 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI (alias) */
1199 [ C(RESULT_MISS) ] = 0x0808, /* DTLB_MISSES.MISS_ST */
1200 },
1201 [ C(OP_PREFETCH) ] = {
1202 [ C(RESULT_ACCESS) ] = 0,
1203 [ C(RESULT_MISS) ] = 0,
1204 },
1205 },
1206 [ C(ITLB) ] = {
1207 [ C(OP_READ) ] = {
1208 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1209 [ C(RESULT_MISS) ] = 0x1282, /* ITLBMISSES */
1210 },
1211 [ C(OP_WRITE) ] = {
1212 [ C(RESULT_ACCESS) ] = -1,
1213 [ C(RESULT_MISS) ] = -1,
1214 },
1215 [ C(OP_PREFETCH) ] = {
1216 [ C(RESULT_ACCESS) ] = -1,
1217 [ C(RESULT_MISS) ] = -1,
1218 },
1219 },
1220 [ C(BPU ) ] = {
1221 [ C(OP_READ) ] = {
1222 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1223 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1224 },
1225 [ C(OP_WRITE) ] = {
1226 [ C(RESULT_ACCESS) ] = -1,
1227 [ C(RESULT_MISS) ] = -1,
1228 },
1229 [ C(OP_PREFETCH) ] = {
1230 [ C(RESULT_ACCESS) ] = -1,
1231 [ C(RESULT_MISS) ] = -1,
1232 },
1233 },
1234 };
1235
1236 static __initconst const u64 atom_hw_cache_event_ids
1237 [PERF_COUNT_HW_CACHE_MAX]
1238 [PERF_COUNT_HW_CACHE_OP_MAX]
1239 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1240 {
1241 [ C(L1D) ] = {
1242 [ C(OP_READ) ] = {
1243 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD */
1244 [ C(RESULT_MISS) ] = 0,
1245 },
1246 [ C(OP_WRITE) ] = {
1247 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST */
1248 [ C(RESULT_MISS) ] = 0,
1249 },
1250 [ C(OP_PREFETCH) ] = {
1251 [ C(RESULT_ACCESS) ] = 0x0,
1252 [ C(RESULT_MISS) ] = 0,
1253 },
1254 },
1255 [ C(L1I ) ] = {
1256 [ C(OP_READ) ] = {
1257 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS */
1258 [ C(RESULT_MISS) ] = 0x0280, /* L1I.MISSES */
1259 },
1260 [ C(OP_WRITE) ] = {
1261 [ C(RESULT_ACCESS) ] = -1,
1262 [ C(RESULT_MISS) ] = -1,
1263 },
1264 [ C(OP_PREFETCH) ] = {
1265 [ C(RESULT_ACCESS) ] = 0,
1266 [ C(RESULT_MISS) ] = 0,
1267 },
1268 },
1269 [ C(LL ) ] = {
1270 [ C(OP_READ) ] = {
1271 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI */
1272 [ C(RESULT_MISS) ] = 0x4129, /* L2_LD.ISTATE */
1273 },
1274 [ C(OP_WRITE) ] = {
1275 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI */
1276 [ C(RESULT_MISS) ] = 0x412A, /* L2_ST.ISTATE */
1277 },
1278 [ C(OP_PREFETCH) ] = {
1279 [ C(RESULT_ACCESS) ] = 0,
1280 [ C(RESULT_MISS) ] = 0,
1281 },
1282 },
1283 [ C(DTLB) ] = {
1284 [ C(OP_READ) ] = {
1285 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI (alias) */
1286 [ C(RESULT_MISS) ] = 0x0508, /* DTLB_MISSES.MISS_LD */
1287 },
1288 [ C(OP_WRITE) ] = {
1289 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI (alias) */
1290 [ C(RESULT_MISS) ] = 0x0608, /* DTLB_MISSES.MISS_ST */
1291 },
1292 [ C(OP_PREFETCH) ] = {
1293 [ C(RESULT_ACCESS) ] = 0,
1294 [ C(RESULT_MISS) ] = 0,
1295 },
1296 },
1297 [ C(ITLB) ] = {
1298 [ C(OP_READ) ] = {
1299 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1300 [ C(RESULT_MISS) ] = 0x0282, /* ITLB.MISSES */
1301 },
1302 [ C(OP_WRITE) ] = {
1303 [ C(RESULT_ACCESS) ] = -1,
1304 [ C(RESULT_MISS) ] = -1,
1305 },
1306 [ C(OP_PREFETCH) ] = {
1307 [ C(RESULT_ACCESS) ] = -1,
1308 [ C(RESULT_MISS) ] = -1,
1309 },
1310 },
1311 [ C(BPU ) ] = {
1312 [ C(OP_READ) ] = {
1313 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1314 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1315 },
1316 [ C(OP_WRITE) ] = {
1317 [ C(RESULT_ACCESS) ] = -1,
1318 [ C(RESULT_MISS) ] = -1,
1319 },
1320 [ C(OP_PREFETCH) ] = {
1321 [ C(RESULT_ACCESS) ] = -1,
1322 [ C(RESULT_MISS) ] = -1,
1323 },
1324 },
1325 };
1326
1327 static struct extra_reg intel_slm_extra_regs[] __read_mostly =
1328 {
1329 /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
1330 INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
1331 INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x368005ffffull, RSP_1),
1332 EVENT_EXTRA_END
1333 };
1334
1335 #define SLM_DMND_READ SNB_DMND_DATA_RD
1336 #define SLM_DMND_WRITE SNB_DMND_RFO
1337 #define SLM_DMND_PREFETCH (SNB_PF_DATA_RD|SNB_PF_RFO)
1338
1339 #define SLM_SNP_ANY (SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
1340 #define SLM_LLC_ACCESS SNB_RESP_ANY
1341 #define SLM_LLC_MISS (SLM_SNP_ANY|SNB_NON_DRAM)
1342
1343 static __initconst const u64 slm_hw_cache_extra_regs
1344 [PERF_COUNT_HW_CACHE_MAX]
1345 [PERF_COUNT_HW_CACHE_OP_MAX]
1346 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1347 {
1348 [ C(LL ) ] = {
1349 [ C(OP_READ) ] = {
1350 [ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
1351 [ C(RESULT_MISS) ] = 0,
1352 },
1353 [ C(OP_WRITE) ] = {
1354 [ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
1355 [ C(RESULT_MISS) ] = SLM_DMND_WRITE|SLM_LLC_MISS,
1356 },
1357 [ C(OP_PREFETCH) ] = {
1358 [ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
1359 [ C(RESULT_MISS) ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
1360 },
1361 },
1362 };
1363
1364 static __initconst const u64 slm_hw_cache_event_ids
1365 [PERF_COUNT_HW_CACHE_MAX]
1366 [PERF_COUNT_HW_CACHE_OP_MAX]
1367 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1368 {
1369 [ C(L1D) ] = {
1370 [ C(OP_READ) ] = {
1371 [ C(RESULT_ACCESS) ] = 0,
1372 [ C(RESULT_MISS) ] = 0x0104, /* LD_DCU_MISS */
1373 },
1374 [ C(OP_WRITE) ] = {
1375 [ C(RESULT_ACCESS) ] = 0,
1376 [ C(RESULT_MISS) ] = 0,
1377 },
1378 [ C(OP_PREFETCH) ] = {
1379 [ C(RESULT_ACCESS) ] = 0,
1380 [ C(RESULT_MISS) ] = 0,
1381 },
1382 },
1383 [ C(L1I ) ] = {
1384 [ C(OP_READ) ] = {
1385 [ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
1386 [ C(RESULT_MISS) ] = 0x0280, /* ICACGE.MISSES */
1387 },
1388 [ C(OP_WRITE) ] = {
1389 [ C(RESULT_ACCESS) ] = -1,
1390 [ C(RESULT_MISS) ] = -1,
1391 },
1392 [ C(OP_PREFETCH) ] = {
1393 [ C(RESULT_ACCESS) ] = 0,
1394 [ C(RESULT_MISS) ] = 0,
1395 },
1396 },
1397 [ C(LL ) ] = {
1398 [ C(OP_READ) ] = {
1399 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
1400 [ C(RESULT_ACCESS) ] = 0x01b7,
1401 [ C(RESULT_MISS) ] = 0,
1402 },
1403 [ C(OP_WRITE) ] = {
1404 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
1405 [ C(RESULT_ACCESS) ] = 0x01b7,
1406 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
1407 [ C(RESULT_MISS) ] = 0x01b7,
1408 },
1409 [ C(OP_PREFETCH) ] = {
1410 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
1411 [ C(RESULT_ACCESS) ] = 0x01b7,
1412 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
1413 [ C(RESULT_MISS) ] = 0x01b7,
1414 },
1415 },
1416 [ C(DTLB) ] = {
1417 [ C(OP_READ) ] = {
1418 [ C(RESULT_ACCESS) ] = 0,
1419 [ C(RESULT_MISS) ] = 0x0804, /* LD_DTLB_MISS */
1420 },
1421 [ C(OP_WRITE) ] = {
1422 [ C(RESULT_ACCESS) ] = 0,
1423 [ C(RESULT_MISS) ] = 0,
1424 },
1425 [ C(OP_PREFETCH) ] = {
1426 [ C(RESULT_ACCESS) ] = 0,
1427 [ C(RESULT_MISS) ] = 0,
1428 },
1429 },
1430 [ C(ITLB) ] = {
1431 [ C(OP_READ) ] = {
1432 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1433 [ C(RESULT_MISS) ] = 0x40205, /* PAGE_WALKS.I_SIDE_WALKS */
1434 },
1435 [ C(OP_WRITE) ] = {
1436 [ C(RESULT_ACCESS) ] = -1,
1437 [ C(RESULT_MISS) ] = -1,
1438 },
1439 [ C(OP_PREFETCH) ] = {
1440 [ C(RESULT_ACCESS) ] = -1,
1441 [ C(RESULT_MISS) ] = -1,
1442 },
1443 },
1444 [ C(BPU ) ] = {
1445 [ C(OP_READ) ] = {
1446 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1447 [ C(RESULT_MISS) ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1448 },
1449 [ C(OP_WRITE) ] = {
1450 [ C(RESULT_ACCESS) ] = -1,
1451 [ C(RESULT_MISS) ] = -1,
1452 },
1453 [ C(OP_PREFETCH) ] = {
1454 [ C(RESULT_ACCESS) ] = -1,
1455 [ C(RESULT_MISS) ] = -1,
1456 },
1457 },
1458 };
1459
1460 /*
1461 * Used from PMIs where the LBRs are already disabled.
1462 *
1463 * This function could be called consecutively. It is required to remain in
1464 * disabled state if called consecutively.
1465 *
1466 * During consecutive calls, the same disable value will be written to related
1467 * registers, so the PMU state remains unchanged. hw.state in
1468 * intel_bts_disable_local will remain PERF_HES_STOPPED too in consecutive
1469 * calls.
1470 */
__intel_pmu_disable_all(void)1471 static void __intel_pmu_disable_all(void)
1472 {
1473 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1474
1475 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1476
1477 if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
1478 intel_pmu_disable_bts();
1479 else
1480 intel_bts_disable_local();
1481
1482 intel_pmu_pebs_disable_all();
1483 }
1484
intel_pmu_disable_all(void)1485 static void intel_pmu_disable_all(void)
1486 {
1487 __intel_pmu_disable_all();
1488 intel_pmu_lbr_disable_all();
1489 }
1490
__intel_pmu_enable_all(int added,bool pmi)1491 static void __intel_pmu_enable_all(int added, bool pmi)
1492 {
1493 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1494
1495 intel_pmu_pebs_enable_all();
1496 intel_pmu_lbr_enable_all(pmi);
1497 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
1498 x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
1499
1500 if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
1501 struct perf_event *event =
1502 cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
1503
1504 if (WARN_ON_ONCE(!event))
1505 return;
1506
1507 intel_pmu_enable_bts(event->hw.config);
1508 } else
1509 intel_bts_enable_local();
1510 }
1511
intel_pmu_enable_all(int added)1512 static void intel_pmu_enable_all(int added)
1513 {
1514 __intel_pmu_enable_all(added, false);
1515 }
1516
1517 /*
1518 * Workaround for:
1519 * Intel Errata AAK100 (model 26)
1520 * Intel Errata AAP53 (model 30)
1521 * Intel Errata BD53 (model 44)
1522 *
1523 * The official story:
1524 * These chips need to be 'reset' when adding counters by programming the
1525 * magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
1526 * in sequence on the same PMC or on different PMCs.
1527 *
1528 * In practise it appears some of these events do in fact count, and
1529 * we need to programm all 4 events.
1530 */
intel_pmu_nhm_workaround(void)1531 static void intel_pmu_nhm_workaround(void)
1532 {
1533 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1534 static const unsigned long nhm_magic[4] = {
1535 0x4300B5,
1536 0x4300D2,
1537 0x4300B1,
1538 0x4300B1
1539 };
1540 struct perf_event *event;
1541 int i;
1542
1543 /*
1544 * The Errata requires below steps:
1545 * 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
1546 * 2) Configure 4 PERFEVTSELx with the magic events and clear
1547 * the corresponding PMCx;
1548 * 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
1549 * 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
1550 * 5) Clear 4 pairs of ERFEVTSELx and PMCx;
1551 */
1552
1553 /*
1554 * The real steps we choose are a little different from above.
1555 * A) To reduce MSR operations, we don't run step 1) as they
1556 * are already cleared before this function is called;
1557 * B) Call x86_perf_event_update to save PMCx before configuring
1558 * PERFEVTSELx with magic number;
1559 * C) With step 5), we do clear only when the PERFEVTSELx is
1560 * not used currently.
1561 * D) Call x86_perf_event_set_period to restore PMCx;
1562 */
1563
1564 /* We always operate 4 pairs of PERF Counters */
1565 for (i = 0; i < 4; i++) {
1566 event = cpuc->events[i];
1567 if (event)
1568 x86_perf_event_update(event);
1569 }
1570
1571 for (i = 0; i < 4; i++) {
1572 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
1573 wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
1574 }
1575
1576 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
1577 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
1578
1579 for (i = 0; i < 4; i++) {
1580 event = cpuc->events[i];
1581
1582 if (event) {
1583 x86_perf_event_set_period(event);
1584 __x86_pmu_enable_event(&event->hw,
1585 ARCH_PERFMON_EVENTSEL_ENABLE);
1586 } else
1587 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
1588 }
1589 }
1590
intel_pmu_nhm_enable_all(int added)1591 static void intel_pmu_nhm_enable_all(int added)
1592 {
1593 if (added)
1594 intel_pmu_nhm_workaround();
1595 intel_pmu_enable_all(added);
1596 }
1597
intel_pmu_get_status(void)1598 static inline u64 intel_pmu_get_status(void)
1599 {
1600 u64 status;
1601
1602 rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
1603
1604 return status;
1605 }
1606
intel_pmu_ack_status(u64 ack)1607 static inline void intel_pmu_ack_status(u64 ack)
1608 {
1609 wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
1610 }
1611
intel_pmu_disable_fixed(struct hw_perf_event * hwc)1612 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
1613 {
1614 int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1615 u64 ctrl_val, mask;
1616
1617 mask = 0xfULL << (idx * 4);
1618
1619 rdmsrl(hwc->config_base, ctrl_val);
1620 ctrl_val &= ~mask;
1621 wrmsrl(hwc->config_base, ctrl_val);
1622 }
1623
event_is_checkpointed(struct perf_event * event)1624 static inline bool event_is_checkpointed(struct perf_event *event)
1625 {
1626 return (event->hw.config & HSW_IN_TX_CHECKPOINTED) != 0;
1627 }
1628
intel_pmu_disable_event(struct perf_event * event)1629 static void intel_pmu_disable_event(struct perf_event *event)
1630 {
1631 struct hw_perf_event *hwc = &event->hw;
1632 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1633
1634 if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1635 intel_pmu_disable_bts();
1636 intel_pmu_drain_bts_buffer();
1637 return;
1638 }
1639
1640 cpuc->intel_ctrl_guest_mask &= ~(1ull << hwc->idx);
1641 cpuc->intel_ctrl_host_mask &= ~(1ull << hwc->idx);
1642 cpuc->intel_cp_status &= ~(1ull << hwc->idx);
1643
1644 /*
1645 * must disable before any actual event
1646 * because any event may be combined with LBR
1647 */
1648 if (needs_branch_stack(event))
1649 intel_pmu_lbr_disable(event);
1650
1651 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1652 intel_pmu_disable_fixed(hwc);
1653 return;
1654 }
1655
1656 x86_pmu_disable_event(event);
1657
1658 if (unlikely(event->attr.precise_ip))
1659 intel_pmu_pebs_disable(event);
1660 }
1661
intel_pmu_enable_fixed(struct hw_perf_event * hwc)1662 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
1663 {
1664 int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1665 u64 ctrl_val, bits, mask;
1666
1667 /*
1668 * Enable IRQ generation (0x8),
1669 * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
1670 * if requested:
1671 */
1672 bits = 0x8ULL;
1673 if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
1674 bits |= 0x2;
1675 if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
1676 bits |= 0x1;
1677
1678 /*
1679 * ANY bit is supported in v3 and up
1680 */
1681 if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
1682 bits |= 0x4;
1683
1684 bits <<= (idx * 4);
1685 mask = 0xfULL << (idx * 4);
1686
1687 rdmsrl(hwc->config_base, ctrl_val);
1688 ctrl_val &= ~mask;
1689 ctrl_val |= bits;
1690 wrmsrl(hwc->config_base, ctrl_val);
1691 }
1692
intel_pmu_enable_event(struct perf_event * event)1693 static void intel_pmu_enable_event(struct perf_event *event)
1694 {
1695 struct hw_perf_event *hwc = &event->hw;
1696 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1697
1698 if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1699 if (!__this_cpu_read(cpu_hw_events.enabled))
1700 return;
1701
1702 intel_pmu_enable_bts(hwc->config);
1703 return;
1704 }
1705 /*
1706 * must enabled before any actual event
1707 * because any event may be combined with LBR
1708 */
1709 if (needs_branch_stack(event))
1710 intel_pmu_lbr_enable(event);
1711
1712 if (event->attr.exclude_host)
1713 cpuc->intel_ctrl_guest_mask |= (1ull << hwc->idx);
1714 if (event->attr.exclude_guest)
1715 cpuc->intel_ctrl_host_mask |= (1ull << hwc->idx);
1716
1717 if (unlikely(event_is_checkpointed(event)))
1718 cpuc->intel_cp_status |= (1ull << hwc->idx);
1719
1720 if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1721 intel_pmu_enable_fixed(hwc);
1722 return;
1723 }
1724
1725 if (unlikely(event->attr.precise_ip))
1726 intel_pmu_pebs_enable(event);
1727
1728 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1729 }
1730
1731 /*
1732 * Save and restart an expired event. Called by NMI contexts,
1733 * so it has to be careful about preempting normal event ops:
1734 */
intel_pmu_save_and_restart(struct perf_event * event)1735 int intel_pmu_save_and_restart(struct perf_event *event)
1736 {
1737 x86_perf_event_update(event);
1738 /*
1739 * For a checkpointed counter always reset back to 0. This
1740 * avoids a situation where the counter overflows, aborts the
1741 * transaction and is then set back to shortly before the
1742 * overflow, and overflows and aborts again.
1743 */
1744 if (unlikely(event_is_checkpointed(event))) {
1745 /* No race with NMIs because the counter should not be armed */
1746 wrmsrl(event->hw.event_base, 0);
1747 local64_set(&event->hw.prev_count, 0);
1748 }
1749 return x86_perf_event_set_period(event);
1750 }
1751
intel_pmu_reset(void)1752 static void intel_pmu_reset(void)
1753 {
1754 struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
1755 unsigned long flags;
1756 int idx;
1757
1758 if (!x86_pmu.num_counters)
1759 return;
1760
1761 local_irq_save(flags);
1762
1763 pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
1764
1765 for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1766 wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
1767 wrmsrl_safe(x86_pmu_event_addr(idx), 0ull);
1768 }
1769 for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
1770 wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
1771
1772 if (ds)
1773 ds->bts_index = ds->bts_buffer_base;
1774
1775 /* Ack all overflows and disable fixed counters */
1776 if (x86_pmu.version >= 2) {
1777 intel_pmu_ack_status(intel_pmu_get_status());
1778 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1779 }
1780
1781 /* Reset LBRs and LBR freezing */
1782 if (x86_pmu.lbr_nr) {
1783 update_debugctlmsr(get_debugctlmsr() &
1784 ~(DEBUGCTLMSR_FREEZE_LBRS_ON_PMI|DEBUGCTLMSR_LBR));
1785 }
1786
1787 local_irq_restore(flags);
1788 }
1789
1790 /*
1791 * This handler is triggered by the local APIC, so the APIC IRQ handling
1792 * rules apply:
1793 */
intel_pmu_handle_irq(struct pt_regs * regs)1794 static int intel_pmu_handle_irq(struct pt_regs *regs)
1795 {
1796 struct perf_sample_data data;
1797 struct cpu_hw_events *cpuc;
1798 int bit, loops;
1799 u64 status;
1800 int handled;
1801
1802 cpuc = this_cpu_ptr(&cpu_hw_events);
1803
1804 /*
1805 * No known reason to not always do late ACK,
1806 * but just in case do it opt-in.
1807 */
1808 if (!x86_pmu.late_ack)
1809 apic_write(APIC_LVTPC, APIC_DM_NMI);
1810 __intel_pmu_disable_all();
1811 handled = intel_pmu_drain_bts_buffer();
1812 handled += intel_bts_interrupt();
1813 status = intel_pmu_get_status();
1814 if (!status)
1815 goto done;
1816
1817 loops = 0;
1818 again:
1819 intel_pmu_lbr_read();
1820 intel_pmu_ack_status(status);
1821 if (++loops > 100) {
1822 static bool warned = false;
1823 if (!warned) {
1824 WARN(1, "perfevents: irq loop stuck!\n");
1825 perf_event_print_debug();
1826 warned = true;
1827 }
1828 intel_pmu_reset();
1829 goto done;
1830 }
1831
1832 inc_irq_stat(apic_perf_irqs);
1833
1834
1835 /*
1836 * Ignore a range of extra bits in status that do not indicate
1837 * overflow by themselves.
1838 */
1839 status &= ~(GLOBAL_STATUS_COND_CHG |
1840 GLOBAL_STATUS_ASIF |
1841 GLOBAL_STATUS_LBRS_FROZEN);
1842 if (!status)
1843 goto done;
1844
1845 /*
1846 * PEBS overflow sets bit 62 in the global status register
1847 */
1848 if (__test_and_clear_bit(62, (unsigned long *)&status)) {
1849 handled++;
1850 x86_pmu.drain_pebs(regs);
1851 /*
1852 * There are cases where, even though, the PEBS ovfl bit is set
1853 * in GLOBAL_OVF_STATUS, the PEBS events may also have their
1854 * overflow bits set for their counters. We must clear them
1855 * here because they have been processed as exact samples in
1856 * the drain_pebs() routine. They must not be processed again
1857 * in the for_each_bit_set() loop for regular samples below.
1858 */
1859 status &= ~cpuc->pebs_enabled;
1860 status &= x86_pmu.intel_ctrl | GLOBAL_STATUS_TRACE_TOPAPMI;
1861 }
1862
1863 /*
1864 * Intel PT
1865 */
1866 if (__test_and_clear_bit(55, (unsigned long *)&status)) {
1867 handled++;
1868 intel_pt_interrupt();
1869 }
1870
1871 /*
1872 * Checkpointed counters can lead to 'spurious' PMIs because the
1873 * rollback caused by the PMI will have cleared the overflow status
1874 * bit. Therefore always force probe these counters.
1875 */
1876 status |= cpuc->intel_cp_status;
1877
1878 for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
1879 struct perf_event *event = cpuc->events[bit];
1880
1881 handled++;
1882
1883 if (!test_bit(bit, cpuc->active_mask))
1884 continue;
1885
1886 if (!intel_pmu_save_and_restart(event))
1887 continue;
1888
1889 perf_sample_data_init(&data, 0, event->hw.last_period);
1890
1891 if (has_branch_stack(event))
1892 data.br_stack = &cpuc->lbr_stack;
1893
1894 if (perf_event_overflow(event, &data, regs))
1895 x86_pmu_stop(event, 0);
1896 }
1897
1898 /*
1899 * Repeat if there is more work to be done:
1900 */
1901 status = intel_pmu_get_status();
1902 if (status)
1903 goto again;
1904
1905 done:
1906 /* Only restore PMU state when it's active. See x86_pmu_disable(). */
1907 if (cpuc->enabled)
1908 __intel_pmu_enable_all(0, true);
1909
1910 /*
1911 * Only unmask the NMI after the overflow counters
1912 * have been reset. This avoids spurious NMIs on
1913 * Haswell CPUs.
1914 */
1915 if (x86_pmu.late_ack)
1916 apic_write(APIC_LVTPC, APIC_DM_NMI);
1917 return handled;
1918 }
1919
1920 static struct event_constraint *
intel_bts_constraints(struct perf_event * event)1921 intel_bts_constraints(struct perf_event *event)
1922 {
1923 struct hw_perf_event *hwc = &event->hw;
1924 unsigned int hw_event, bts_event;
1925
1926 if (event->attr.freq)
1927 return NULL;
1928
1929 hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
1930 bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1931
1932 if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
1933 return &bts_constraint;
1934
1935 return NULL;
1936 }
1937
intel_alt_er(int idx,u64 config)1938 static int intel_alt_er(int idx, u64 config)
1939 {
1940 int alt_idx = idx;
1941
1942 if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
1943 return idx;
1944
1945 if (idx == EXTRA_REG_RSP_0)
1946 alt_idx = EXTRA_REG_RSP_1;
1947
1948 if (idx == EXTRA_REG_RSP_1)
1949 alt_idx = EXTRA_REG_RSP_0;
1950
1951 if (config & ~x86_pmu.extra_regs[alt_idx].valid_mask)
1952 return idx;
1953
1954 return alt_idx;
1955 }
1956
intel_fixup_er(struct perf_event * event,int idx)1957 static void intel_fixup_er(struct perf_event *event, int idx)
1958 {
1959 event->hw.extra_reg.idx = idx;
1960
1961 if (idx == EXTRA_REG_RSP_0) {
1962 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1963 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
1964 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
1965 } else if (idx == EXTRA_REG_RSP_1) {
1966 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1967 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
1968 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
1969 }
1970 }
1971
1972 /*
1973 * manage allocation of shared extra msr for certain events
1974 *
1975 * sharing can be:
1976 * per-cpu: to be shared between the various events on a single PMU
1977 * per-core: per-cpu + shared by HT threads
1978 */
1979 static struct event_constraint *
__intel_shared_reg_get_constraints(struct cpu_hw_events * cpuc,struct perf_event * event,struct hw_perf_event_extra * reg)1980 __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
1981 struct perf_event *event,
1982 struct hw_perf_event_extra *reg)
1983 {
1984 struct event_constraint *c = &emptyconstraint;
1985 struct er_account *era;
1986 unsigned long flags;
1987 int idx = reg->idx;
1988
1989 /*
1990 * reg->alloc can be set due to existing state, so for fake cpuc we
1991 * need to ignore this, otherwise we might fail to allocate proper fake
1992 * state for this extra reg constraint. Also see the comment below.
1993 */
1994 if (reg->alloc && !cpuc->is_fake)
1995 return NULL; /* call x86_get_event_constraint() */
1996
1997 again:
1998 era = &cpuc->shared_regs->regs[idx];
1999 /*
2000 * we use spin_lock_irqsave() to avoid lockdep issues when
2001 * passing a fake cpuc
2002 */
2003 raw_spin_lock_irqsave(&era->lock, flags);
2004
2005 if (!atomic_read(&era->ref) || era->config == reg->config) {
2006
2007 /*
2008 * If its a fake cpuc -- as per validate_{group,event}() we
2009 * shouldn't touch event state and we can avoid doing so
2010 * since both will only call get_event_constraints() once
2011 * on each event, this avoids the need for reg->alloc.
2012 *
2013 * Not doing the ER fixup will only result in era->reg being
2014 * wrong, but since we won't actually try and program hardware
2015 * this isn't a problem either.
2016 */
2017 if (!cpuc->is_fake) {
2018 if (idx != reg->idx)
2019 intel_fixup_er(event, idx);
2020
2021 /*
2022 * x86_schedule_events() can call get_event_constraints()
2023 * multiple times on events in the case of incremental
2024 * scheduling(). reg->alloc ensures we only do the ER
2025 * allocation once.
2026 */
2027 reg->alloc = 1;
2028 }
2029
2030 /* lock in msr value */
2031 era->config = reg->config;
2032 era->reg = reg->reg;
2033
2034 /* one more user */
2035 atomic_inc(&era->ref);
2036
2037 /*
2038 * need to call x86_get_event_constraint()
2039 * to check if associated event has constraints
2040 */
2041 c = NULL;
2042 } else {
2043 idx = intel_alt_er(idx, reg->config);
2044 if (idx != reg->idx) {
2045 raw_spin_unlock_irqrestore(&era->lock, flags);
2046 goto again;
2047 }
2048 }
2049 raw_spin_unlock_irqrestore(&era->lock, flags);
2050
2051 return c;
2052 }
2053
2054 static void
__intel_shared_reg_put_constraints(struct cpu_hw_events * cpuc,struct hw_perf_event_extra * reg)2055 __intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
2056 struct hw_perf_event_extra *reg)
2057 {
2058 struct er_account *era;
2059
2060 /*
2061 * Only put constraint if extra reg was actually allocated. Also takes
2062 * care of event which do not use an extra shared reg.
2063 *
2064 * Also, if this is a fake cpuc we shouldn't touch any event state
2065 * (reg->alloc) and we don't care about leaving inconsistent cpuc state
2066 * either since it'll be thrown out.
2067 */
2068 if (!reg->alloc || cpuc->is_fake)
2069 return;
2070
2071 era = &cpuc->shared_regs->regs[reg->idx];
2072
2073 /* one fewer user */
2074 atomic_dec(&era->ref);
2075
2076 /* allocate again next time */
2077 reg->alloc = 0;
2078 }
2079
2080 static struct event_constraint *
intel_shared_regs_constraints(struct cpu_hw_events * cpuc,struct perf_event * event)2081 intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
2082 struct perf_event *event)
2083 {
2084 struct event_constraint *c = NULL, *d;
2085 struct hw_perf_event_extra *xreg, *breg;
2086
2087 xreg = &event->hw.extra_reg;
2088 if (xreg->idx != EXTRA_REG_NONE) {
2089 c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
2090 if (c == &emptyconstraint)
2091 return c;
2092 }
2093 breg = &event->hw.branch_reg;
2094 if (breg->idx != EXTRA_REG_NONE) {
2095 d = __intel_shared_reg_get_constraints(cpuc, event, breg);
2096 if (d == &emptyconstraint) {
2097 __intel_shared_reg_put_constraints(cpuc, xreg);
2098 c = d;
2099 }
2100 }
2101 return c;
2102 }
2103
2104 struct event_constraint *
x86_get_event_constraints(struct cpu_hw_events * cpuc,int idx,struct perf_event * event)2105 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2106 struct perf_event *event)
2107 {
2108 struct event_constraint *c;
2109
2110 if (x86_pmu.event_constraints) {
2111 for_each_event_constraint(c, x86_pmu.event_constraints) {
2112 if ((event->hw.config & c->cmask) == c->code) {
2113 event->hw.flags |= c->flags;
2114 return c;
2115 }
2116 }
2117 }
2118
2119 return &unconstrained;
2120 }
2121
2122 static struct event_constraint *
__intel_get_event_constraints(struct cpu_hw_events * cpuc,int idx,struct perf_event * event)2123 __intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2124 struct perf_event *event)
2125 {
2126 struct event_constraint *c;
2127
2128 c = intel_bts_constraints(event);
2129 if (c)
2130 return c;
2131
2132 c = intel_shared_regs_constraints(cpuc, event);
2133 if (c)
2134 return c;
2135
2136 c = intel_pebs_constraints(event);
2137 if (c)
2138 return c;
2139
2140 return x86_get_event_constraints(cpuc, idx, event);
2141 }
2142
2143 static void
intel_start_scheduling(struct cpu_hw_events * cpuc)2144 intel_start_scheduling(struct cpu_hw_events *cpuc)
2145 {
2146 struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2147 struct intel_excl_states *xl;
2148 int tid = cpuc->excl_thread_id;
2149
2150 /*
2151 * nothing needed if in group validation mode
2152 */
2153 if (cpuc->is_fake || !is_ht_workaround_enabled())
2154 return;
2155
2156 /*
2157 * no exclusion needed
2158 */
2159 if (WARN_ON_ONCE(!excl_cntrs))
2160 return;
2161
2162 xl = &excl_cntrs->states[tid];
2163
2164 xl->sched_started = true;
2165 /*
2166 * lock shared state until we are done scheduling
2167 * in stop_event_scheduling()
2168 * makes scheduling appear as a transaction
2169 */
2170 raw_spin_lock(&excl_cntrs->lock);
2171 }
2172
intel_commit_scheduling(struct cpu_hw_events * cpuc,int idx,int cntr)2173 static void intel_commit_scheduling(struct cpu_hw_events *cpuc, int idx, int cntr)
2174 {
2175 struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2176 struct event_constraint *c = cpuc->event_constraint[idx];
2177 struct intel_excl_states *xl;
2178 int tid = cpuc->excl_thread_id;
2179
2180 if (cpuc->is_fake || !is_ht_workaround_enabled())
2181 return;
2182
2183 if (WARN_ON_ONCE(!excl_cntrs))
2184 return;
2185
2186 if (!(c->flags & PERF_X86_EVENT_DYNAMIC))
2187 return;
2188
2189 xl = &excl_cntrs->states[tid];
2190
2191 lockdep_assert_held(&excl_cntrs->lock);
2192
2193 if (c->flags & PERF_X86_EVENT_EXCL)
2194 xl->state[cntr] = INTEL_EXCL_EXCLUSIVE;
2195 else
2196 xl->state[cntr] = INTEL_EXCL_SHARED;
2197 }
2198
2199 static void
intel_stop_scheduling(struct cpu_hw_events * cpuc)2200 intel_stop_scheduling(struct cpu_hw_events *cpuc)
2201 {
2202 struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2203 struct intel_excl_states *xl;
2204 int tid = cpuc->excl_thread_id;
2205
2206 /*
2207 * nothing needed if in group validation mode
2208 */
2209 if (cpuc->is_fake || !is_ht_workaround_enabled())
2210 return;
2211 /*
2212 * no exclusion needed
2213 */
2214 if (WARN_ON_ONCE(!excl_cntrs))
2215 return;
2216
2217 xl = &excl_cntrs->states[tid];
2218
2219 xl->sched_started = false;
2220 /*
2221 * release shared state lock (acquired in intel_start_scheduling())
2222 */
2223 raw_spin_unlock(&excl_cntrs->lock);
2224 }
2225
2226 static struct event_constraint *
intel_get_excl_constraints(struct cpu_hw_events * cpuc,struct perf_event * event,int idx,struct event_constraint * c)2227 intel_get_excl_constraints(struct cpu_hw_events *cpuc, struct perf_event *event,
2228 int idx, struct event_constraint *c)
2229 {
2230 struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2231 struct intel_excl_states *xlo;
2232 int tid = cpuc->excl_thread_id;
2233 int is_excl, i;
2234
2235 /*
2236 * validating a group does not require
2237 * enforcing cross-thread exclusion
2238 */
2239 if (cpuc->is_fake || !is_ht_workaround_enabled())
2240 return c;
2241
2242 /*
2243 * no exclusion needed
2244 */
2245 if (WARN_ON_ONCE(!excl_cntrs))
2246 return c;
2247
2248 /*
2249 * because we modify the constraint, we need
2250 * to make a copy. Static constraints come
2251 * from static const tables.
2252 *
2253 * only needed when constraint has not yet
2254 * been cloned (marked dynamic)
2255 */
2256 if (!(c->flags & PERF_X86_EVENT_DYNAMIC)) {
2257 struct event_constraint *cx;
2258
2259 /*
2260 * grab pre-allocated constraint entry
2261 */
2262 cx = &cpuc->constraint_list[idx];
2263
2264 /*
2265 * initialize dynamic constraint
2266 * with static constraint
2267 */
2268 *cx = *c;
2269
2270 /*
2271 * mark constraint as dynamic, so we
2272 * can free it later on
2273 */
2274 cx->flags |= PERF_X86_EVENT_DYNAMIC;
2275 c = cx;
2276 }
2277
2278 /*
2279 * From here on, the constraint is dynamic.
2280 * Either it was just allocated above, or it
2281 * was allocated during a earlier invocation
2282 * of this function
2283 */
2284
2285 /*
2286 * state of sibling HT
2287 */
2288 xlo = &excl_cntrs->states[tid ^ 1];
2289
2290 /*
2291 * event requires exclusive counter access
2292 * across HT threads
2293 */
2294 is_excl = c->flags & PERF_X86_EVENT_EXCL;
2295 if (is_excl && !(event->hw.flags & PERF_X86_EVENT_EXCL_ACCT)) {
2296 event->hw.flags |= PERF_X86_EVENT_EXCL_ACCT;
2297 if (!cpuc->n_excl++)
2298 WRITE_ONCE(excl_cntrs->has_exclusive[tid], 1);
2299 }
2300
2301 /*
2302 * Modify static constraint with current dynamic
2303 * state of thread
2304 *
2305 * EXCLUSIVE: sibling counter measuring exclusive event
2306 * SHARED : sibling counter measuring non-exclusive event
2307 * UNUSED : sibling counter unused
2308 */
2309 for_each_set_bit(i, c->idxmsk, X86_PMC_IDX_MAX) {
2310 /*
2311 * exclusive event in sibling counter
2312 * our corresponding counter cannot be used
2313 * regardless of our event
2314 */
2315 if (xlo->state[i] == INTEL_EXCL_EXCLUSIVE)
2316 __clear_bit(i, c->idxmsk);
2317 /*
2318 * if measuring an exclusive event, sibling
2319 * measuring non-exclusive, then counter cannot
2320 * be used
2321 */
2322 if (is_excl && xlo->state[i] == INTEL_EXCL_SHARED)
2323 __clear_bit(i, c->idxmsk);
2324 }
2325
2326 /*
2327 * recompute actual bit weight for scheduling algorithm
2328 */
2329 c->weight = hweight64(c->idxmsk64);
2330
2331 /*
2332 * if we return an empty mask, then switch
2333 * back to static empty constraint to avoid
2334 * the cost of freeing later on
2335 */
2336 if (c->weight == 0)
2337 c = &emptyconstraint;
2338
2339 return c;
2340 }
2341
2342 static struct event_constraint *
intel_get_event_constraints(struct cpu_hw_events * cpuc,int idx,struct perf_event * event)2343 intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2344 struct perf_event *event)
2345 {
2346 struct event_constraint *c1 = NULL;
2347 struct event_constraint *c2;
2348
2349 if (idx >= 0) /* fake does < 0 */
2350 c1 = cpuc->event_constraint[idx];
2351
2352 /*
2353 * first time only
2354 * - static constraint: no change across incremental scheduling calls
2355 * - dynamic constraint: handled by intel_get_excl_constraints()
2356 */
2357 c2 = __intel_get_event_constraints(cpuc, idx, event);
2358 if (c1 && (c1->flags & PERF_X86_EVENT_DYNAMIC)) {
2359 bitmap_copy(c1->idxmsk, c2->idxmsk, X86_PMC_IDX_MAX);
2360 c1->weight = c2->weight;
2361 c2 = c1;
2362 }
2363
2364 if (cpuc->excl_cntrs)
2365 return intel_get_excl_constraints(cpuc, event, idx, c2);
2366
2367 return c2;
2368 }
2369
intel_put_excl_constraints(struct cpu_hw_events * cpuc,struct perf_event * event)2370 static void intel_put_excl_constraints(struct cpu_hw_events *cpuc,
2371 struct perf_event *event)
2372 {
2373 struct hw_perf_event *hwc = &event->hw;
2374 struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2375 int tid = cpuc->excl_thread_id;
2376 struct intel_excl_states *xl;
2377
2378 /*
2379 * nothing needed if in group validation mode
2380 */
2381 if (cpuc->is_fake)
2382 return;
2383
2384 if (WARN_ON_ONCE(!excl_cntrs))
2385 return;
2386
2387 if (hwc->flags & PERF_X86_EVENT_EXCL_ACCT) {
2388 hwc->flags &= ~PERF_X86_EVENT_EXCL_ACCT;
2389 if (!--cpuc->n_excl)
2390 WRITE_ONCE(excl_cntrs->has_exclusive[tid], 0);
2391 }
2392
2393 /*
2394 * If event was actually assigned, then mark the counter state as
2395 * unused now.
2396 */
2397 if (hwc->idx >= 0) {
2398 xl = &excl_cntrs->states[tid];
2399
2400 /*
2401 * put_constraint may be called from x86_schedule_events()
2402 * which already has the lock held so here make locking
2403 * conditional.
2404 */
2405 if (!xl->sched_started)
2406 raw_spin_lock(&excl_cntrs->lock);
2407
2408 xl->state[hwc->idx] = INTEL_EXCL_UNUSED;
2409
2410 if (!xl->sched_started)
2411 raw_spin_unlock(&excl_cntrs->lock);
2412 }
2413 }
2414
2415 static void
intel_put_shared_regs_event_constraints(struct cpu_hw_events * cpuc,struct perf_event * event)2416 intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
2417 struct perf_event *event)
2418 {
2419 struct hw_perf_event_extra *reg;
2420
2421 reg = &event->hw.extra_reg;
2422 if (reg->idx != EXTRA_REG_NONE)
2423 __intel_shared_reg_put_constraints(cpuc, reg);
2424
2425 reg = &event->hw.branch_reg;
2426 if (reg->idx != EXTRA_REG_NONE)
2427 __intel_shared_reg_put_constraints(cpuc, reg);
2428 }
2429
intel_put_event_constraints(struct cpu_hw_events * cpuc,struct perf_event * event)2430 static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
2431 struct perf_event *event)
2432 {
2433 intel_put_shared_regs_event_constraints(cpuc, event);
2434
2435 /*
2436 * is PMU has exclusive counter restrictions, then
2437 * all events are subject to and must call the
2438 * put_excl_constraints() routine
2439 */
2440 if (cpuc->excl_cntrs)
2441 intel_put_excl_constraints(cpuc, event);
2442 }
2443
intel_pebs_aliases_core2(struct perf_event * event)2444 static void intel_pebs_aliases_core2(struct perf_event *event)
2445 {
2446 if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
2447 /*
2448 * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
2449 * (0x003c) so that we can use it with PEBS.
2450 *
2451 * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
2452 * PEBS capable. However we can use INST_RETIRED.ANY_P
2453 * (0x00c0), which is a PEBS capable event, to get the same
2454 * count.
2455 *
2456 * INST_RETIRED.ANY_P counts the number of cycles that retires
2457 * CNTMASK instructions. By setting CNTMASK to a value (16)
2458 * larger than the maximum number of instructions that can be
2459 * retired per cycle (4) and then inverting the condition, we
2460 * count all cycles that retire 16 or less instructions, which
2461 * is every cycle.
2462 *
2463 * Thereby we gain a PEBS capable cycle counter.
2464 */
2465 u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
2466
2467 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
2468 event->hw.config = alt_config;
2469 }
2470 }
2471
intel_pebs_aliases_snb(struct perf_event * event)2472 static void intel_pebs_aliases_snb(struct perf_event *event)
2473 {
2474 if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
2475 /*
2476 * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
2477 * (0x003c) so that we can use it with PEBS.
2478 *
2479 * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
2480 * PEBS capable. However we can use UOPS_RETIRED.ALL
2481 * (0x01c2), which is a PEBS capable event, to get the same
2482 * count.
2483 *
2484 * UOPS_RETIRED.ALL counts the number of cycles that retires
2485 * CNTMASK micro-ops. By setting CNTMASK to a value (16)
2486 * larger than the maximum number of micro-ops that can be
2487 * retired per cycle (4) and then inverting the condition, we
2488 * count all cycles that retire 16 or less micro-ops, which
2489 * is every cycle.
2490 *
2491 * Thereby we gain a PEBS capable cycle counter.
2492 */
2493 u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
2494
2495 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
2496 event->hw.config = alt_config;
2497 }
2498 }
2499
intel_pmu_free_running_flags(struct perf_event * event)2500 static unsigned long intel_pmu_free_running_flags(struct perf_event *event)
2501 {
2502 unsigned long flags = x86_pmu.free_running_flags;
2503
2504 if (event->attr.use_clockid)
2505 flags &= ~PERF_SAMPLE_TIME;
2506 return flags;
2507 }
2508
intel_pmu_hw_config(struct perf_event * event)2509 static int intel_pmu_hw_config(struct perf_event *event)
2510 {
2511 int ret = x86_pmu_hw_config(event);
2512
2513 if (ret)
2514 return ret;
2515
2516 if (event->attr.precise_ip) {
2517 if (!(event->attr.freq || (event->attr.wakeup_events && !event->attr.watermark))) {
2518 event->hw.flags |= PERF_X86_EVENT_AUTO_RELOAD;
2519 if (!(event->attr.sample_type &
2520 ~intel_pmu_free_running_flags(event)))
2521 event->hw.flags |= PERF_X86_EVENT_FREERUNNING;
2522 }
2523 if (x86_pmu.pebs_aliases)
2524 x86_pmu.pebs_aliases(event);
2525 }
2526
2527 if (needs_branch_stack(event)) {
2528 ret = intel_pmu_setup_lbr_filter(event);
2529 if (ret)
2530 return ret;
2531
2532 /*
2533 * BTS is set up earlier in this path, so don't account twice
2534 */
2535 if (!intel_pmu_has_bts(event)) {
2536 /* disallow lbr if conflicting events are present */
2537 if (x86_add_exclusive(x86_lbr_exclusive_lbr))
2538 return -EBUSY;
2539
2540 event->destroy = hw_perf_lbr_event_destroy;
2541 }
2542 }
2543
2544 if (event->attr.type != PERF_TYPE_RAW)
2545 return 0;
2546
2547 if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
2548 return 0;
2549
2550 if (x86_pmu.version < 3)
2551 return -EINVAL;
2552
2553 if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
2554 return -EACCES;
2555
2556 event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
2557
2558 return 0;
2559 }
2560
perf_guest_get_msrs(int * nr)2561 struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
2562 {
2563 if (x86_pmu.guest_get_msrs)
2564 return x86_pmu.guest_get_msrs(nr);
2565 *nr = 0;
2566 return NULL;
2567 }
2568 EXPORT_SYMBOL_GPL(perf_guest_get_msrs);
2569
intel_guest_get_msrs(int * nr)2570 static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr)
2571 {
2572 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2573 struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2574
2575 arr[0].msr = MSR_CORE_PERF_GLOBAL_CTRL;
2576 arr[0].host = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask;
2577 arr[0].guest = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_host_mask;
2578 /*
2579 * If PMU counter has PEBS enabled it is not enough to disable counter
2580 * on a guest entry since PEBS memory write can overshoot guest entry
2581 * and corrupt guest memory. Disabling PEBS solves the problem.
2582 */
2583 arr[1].msr = MSR_IA32_PEBS_ENABLE;
2584 arr[1].host = cpuc->pebs_enabled;
2585 arr[1].guest = 0;
2586
2587 *nr = 2;
2588 return arr;
2589 }
2590
core_guest_get_msrs(int * nr)2591 static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
2592 {
2593 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2594 struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2595 int idx;
2596
2597 for (idx = 0; idx < x86_pmu.num_counters; idx++) {
2598 struct perf_event *event = cpuc->events[idx];
2599
2600 arr[idx].msr = x86_pmu_config_addr(idx);
2601 arr[idx].host = arr[idx].guest = 0;
2602
2603 if (!test_bit(idx, cpuc->active_mask))
2604 continue;
2605
2606 arr[idx].host = arr[idx].guest =
2607 event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;
2608
2609 if (event->attr.exclude_host)
2610 arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2611 else if (event->attr.exclude_guest)
2612 arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2613 }
2614
2615 *nr = x86_pmu.num_counters;
2616 return arr;
2617 }
2618
core_pmu_enable_event(struct perf_event * event)2619 static void core_pmu_enable_event(struct perf_event *event)
2620 {
2621 if (!event->attr.exclude_host)
2622 x86_pmu_enable_event(event);
2623 }
2624
core_pmu_enable_all(int added)2625 static void core_pmu_enable_all(int added)
2626 {
2627 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2628 int idx;
2629
2630 for (idx = 0; idx < x86_pmu.num_counters; idx++) {
2631 struct hw_perf_event *hwc = &cpuc->events[idx]->hw;
2632
2633 if (!test_bit(idx, cpuc->active_mask) ||
2634 cpuc->events[idx]->attr.exclude_host)
2635 continue;
2636
2637 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
2638 }
2639 }
2640
hsw_hw_config(struct perf_event * event)2641 static int hsw_hw_config(struct perf_event *event)
2642 {
2643 int ret = intel_pmu_hw_config(event);
2644
2645 if (ret)
2646 return ret;
2647 if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
2648 return 0;
2649 event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);
2650
2651 /*
2652 * IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
2653 * PEBS or in ANY thread mode. Since the results are non-sensical forbid
2654 * this combination.
2655 */
2656 if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
2657 ((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
2658 event->attr.precise_ip > 0))
2659 return -EOPNOTSUPP;
2660
2661 if (event_is_checkpointed(event)) {
2662 /*
2663 * Sampling of checkpointed events can cause situations where
2664 * the CPU constantly aborts because of a overflow, which is
2665 * then checkpointed back and ignored. Forbid checkpointing
2666 * for sampling.
2667 *
2668 * But still allow a long sampling period, so that perf stat
2669 * from KVM works.
2670 */
2671 if (event->attr.sample_period > 0 &&
2672 event->attr.sample_period < 0x7fffffff)
2673 return -EOPNOTSUPP;
2674 }
2675 return 0;
2676 }
2677
2678 static struct event_constraint counter2_constraint =
2679 EVENT_CONSTRAINT(0, 0x4, 0);
2680
2681 static struct event_constraint *
hsw_get_event_constraints(struct cpu_hw_events * cpuc,int idx,struct perf_event * event)2682 hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2683 struct perf_event *event)
2684 {
2685 struct event_constraint *c;
2686
2687 c = intel_get_event_constraints(cpuc, idx, event);
2688
2689 /* Handle special quirk on in_tx_checkpointed only in counter 2 */
2690 if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
2691 if (c->idxmsk64 & (1U << 2))
2692 return &counter2_constraint;
2693 return &emptyconstraint;
2694 }
2695
2696 return c;
2697 }
2698
2699 /*
2700 * Broadwell:
2701 *
2702 * The INST_RETIRED.ALL period always needs to have lowest 6 bits cleared
2703 * (BDM55) and it must not use a period smaller than 100 (BDM11). We combine
2704 * the two to enforce a minimum period of 128 (the smallest value that has bits
2705 * 0-5 cleared and >= 100).
2706 *
2707 * Because of how the code in x86_perf_event_set_period() works, the truncation
2708 * of the lower 6 bits is 'harmless' as we'll occasionally add a longer period
2709 * to make up for the 'lost' events due to carrying the 'error' in period_left.
2710 *
2711 * Therefore the effective (average) period matches the requested period,
2712 * despite coarser hardware granularity.
2713 */
bdw_limit_period(struct perf_event * event,unsigned left)2714 static unsigned bdw_limit_period(struct perf_event *event, unsigned left)
2715 {
2716 if ((event->hw.config & INTEL_ARCH_EVENT_MASK) ==
2717 X86_CONFIG(.event=0xc0, .umask=0x01)) {
2718 if (left < 128)
2719 left = 128;
2720 left &= ~0x3fULL;
2721 }
2722 return left;
2723 }
2724
2725 PMU_FORMAT_ATTR(event, "config:0-7" );
2726 PMU_FORMAT_ATTR(umask, "config:8-15" );
2727 PMU_FORMAT_ATTR(edge, "config:18" );
2728 PMU_FORMAT_ATTR(pc, "config:19" );
2729 PMU_FORMAT_ATTR(any, "config:21" ); /* v3 + */
2730 PMU_FORMAT_ATTR(inv, "config:23" );
2731 PMU_FORMAT_ATTR(cmask, "config:24-31" );
2732 PMU_FORMAT_ATTR(in_tx, "config:32");
2733 PMU_FORMAT_ATTR(in_tx_cp, "config:33");
2734
2735 static struct attribute *intel_arch_formats_attr[] = {
2736 &format_attr_event.attr,
2737 &format_attr_umask.attr,
2738 &format_attr_edge.attr,
2739 &format_attr_pc.attr,
2740 &format_attr_inv.attr,
2741 &format_attr_cmask.attr,
2742 NULL,
2743 };
2744
intel_event_sysfs_show(char * page,u64 config)2745 ssize_t intel_event_sysfs_show(char *page, u64 config)
2746 {
2747 u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
2748
2749 return x86_event_sysfs_show(page, config, event);
2750 }
2751
allocate_shared_regs(int cpu)2752 struct intel_shared_regs *allocate_shared_regs(int cpu)
2753 {
2754 struct intel_shared_regs *regs;
2755 int i;
2756
2757 regs = kzalloc_node(sizeof(struct intel_shared_regs),
2758 GFP_KERNEL, cpu_to_node(cpu));
2759 if (regs) {
2760 /*
2761 * initialize the locks to keep lockdep happy
2762 */
2763 for (i = 0; i < EXTRA_REG_MAX; i++)
2764 raw_spin_lock_init(®s->regs[i].lock);
2765
2766 regs->core_id = -1;
2767 }
2768 return regs;
2769 }
2770
allocate_excl_cntrs(int cpu)2771 static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
2772 {
2773 struct intel_excl_cntrs *c;
2774
2775 c = kzalloc_node(sizeof(struct intel_excl_cntrs),
2776 GFP_KERNEL, cpu_to_node(cpu));
2777 if (c) {
2778 raw_spin_lock_init(&c->lock);
2779 c->core_id = -1;
2780 }
2781 return c;
2782 }
2783
intel_pmu_cpu_prepare(int cpu)2784 static int intel_pmu_cpu_prepare(int cpu)
2785 {
2786 struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2787
2788 if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
2789 cpuc->shared_regs = allocate_shared_regs(cpu);
2790 if (!cpuc->shared_regs)
2791 goto err;
2792 }
2793
2794 if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2795 size_t sz = X86_PMC_IDX_MAX * sizeof(struct event_constraint);
2796
2797 cpuc->constraint_list = kzalloc(sz, GFP_KERNEL);
2798 if (!cpuc->constraint_list)
2799 goto err_shared_regs;
2800
2801 cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
2802 if (!cpuc->excl_cntrs)
2803 goto err_constraint_list;
2804
2805 cpuc->excl_thread_id = 0;
2806 }
2807
2808 return NOTIFY_OK;
2809
2810 err_constraint_list:
2811 kfree(cpuc->constraint_list);
2812 cpuc->constraint_list = NULL;
2813
2814 err_shared_regs:
2815 kfree(cpuc->shared_regs);
2816 cpuc->shared_regs = NULL;
2817
2818 err:
2819 return NOTIFY_BAD;
2820 }
2821
intel_pmu_cpu_starting(int cpu)2822 static void intel_pmu_cpu_starting(int cpu)
2823 {
2824 struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2825 int core_id = topology_core_id(cpu);
2826 int i;
2827
2828 init_debug_store_on_cpu(cpu);
2829 /*
2830 * Deal with CPUs that don't clear their LBRs on power-up.
2831 */
2832 intel_pmu_lbr_reset();
2833
2834 cpuc->lbr_sel = NULL;
2835
2836 if (!cpuc->shared_regs)
2837 return;
2838
2839 if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
2840 void **onln = &cpuc->kfree_on_online[X86_PERF_KFREE_SHARED];
2841
2842 for_each_cpu(i, topology_sibling_cpumask(cpu)) {
2843 struct intel_shared_regs *pc;
2844
2845 pc = per_cpu(cpu_hw_events, i).shared_regs;
2846 if (pc && pc->core_id == core_id) {
2847 *onln = cpuc->shared_regs;
2848 cpuc->shared_regs = pc;
2849 break;
2850 }
2851 }
2852 cpuc->shared_regs->core_id = core_id;
2853 cpuc->shared_regs->refcnt++;
2854 }
2855
2856 if (x86_pmu.lbr_sel_map)
2857 cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
2858
2859 if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2860 for_each_cpu(i, topology_sibling_cpumask(cpu)) {
2861 struct intel_excl_cntrs *c;
2862
2863 c = per_cpu(cpu_hw_events, i).excl_cntrs;
2864 if (c && c->core_id == core_id) {
2865 cpuc->kfree_on_online[1] = cpuc->excl_cntrs;
2866 cpuc->excl_cntrs = c;
2867 cpuc->excl_thread_id = 1;
2868 break;
2869 }
2870 }
2871 cpuc->excl_cntrs->core_id = core_id;
2872 cpuc->excl_cntrs->refcnt++;
2873 }
2874 }
2875
free_excl_cntrs(int cpu)2876 static void free_excl_cntrs(int cpu)
2877 {
2878 struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2879 struct intel_excl_cntrs *c;
2880
2881 c = cpuc->excl_cntrs;
2882 if (c) {
2883 if (c->core_id == -1 || --c->refcnt == 0)
2884 kfree(c);
2885 cpuc->excl_cntrs = NULL;
2886 kfree(cpuc->constraint_list);
2887 cpuc->constraint_list = NULL;
2888 }
2889 }
2890
intel_pmu_cpu_dying(int cpu)2891 static void intel_pmu_cpu_dying(int cpu)
2892 {
2893 struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2894 struct intel_shared_regs *pc;
2895
2896 pc = cpuc->shared_regs;
2897 if (pc) {
2898 if (pc->core_id == -1 || --pc->refcnt == 0)
2899 kfree(pc);
2900 cpuc->shared_regs = NULL;
2901 }
2902
2903 free_excl_cntrs(cpu);
2904
2905 fini_debug_store_on_cpu(cpu);
2906 }
2907
intel_pmu_sched_task(struct perf_event_context * ctx,bool sched_in)2908 static void intel_pmu_sched_task(struct perf_event_context *ctx,
2909 bool sched_in)
2910 {
2911 if (x86_pmu.pebs_active)
2912 intel_pmu_pebs_sched_task(ctx, sched_in);
2913 if (x86_pmu.lbr_nr)
2914 intel_pmu_lbr_sched_task(ctx, sched_in);
2915 }
2916
2917 PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
2918
2919 PMU_FORMAT_ATTR(ldlat, "config1:0-15");
2920
2921 PMU_FORMAT_ATTR(frontend, "config1:0-23");
2922
2923 static struct attribute *intel_arch3_formats_attr[] = {
2924 &format_attr_event.attr,
2925 &format_attr_umask.attr,
2926 &format_attr_edge.attr,
2927 &format_attr_pc.attr,
2928 &format_attr_any.attr,
2929 &format_attr_inv.attr,
2930 &format_attr_cmask.attr,
2931 &format_attr_in_tx.attr,
2932 &format_attr_in_tx_cp.attr,
2933
2934 &format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
2935 &format_attr_ldlat.attr, /* PEBS load latency */
2936 NULL,
2937 };
2938
2939 static struct attribute *skl_format_attr[] = {
2940 &format_attr_frontend.attr,
2941 NULL,
2942 };
2943
2944 static __initconst const struct x86_pmu core_pmu = {
2945 .name = "core",
2946 .handle_irq = x86_pmu_handle_irq,
2947 .disable_all = x86_pmu_disable_all,
2948 .enable_all = core_pmu_enable_all,
2949 .enable = core_pmu_enable_event,
2950 .disable = x86_pmu_disable_event,
2951 .hw_config = x86_pmu_hw_config,
2952 .schedule_events = x86_schedule_events,
2953 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
2954 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
2955 .event_map = intel_pmu_event_map,
2956 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
2957 .apic = 1,
2958 .free_running_flags = PEBS_FREERUNNING_FLAGS,
2959
2960 /*
2961 * Intel PMCs cannot be accessed sanely above 32-bit width,
2962 * so we install an artificial 1<<31 period regardless of
2963 * the generic event period:
2964 */
2965 .max_period = (1ULL<<31) - 1,
2966 .get_event_constraints = intel_get_event_constraints,
2967 .put_event_constraints = intel_put_event_constraints,
2968 .event_constraints = intel_core_event_constraints,
2969 .guest_get_msrs = core_guest_get_msrs,
2970 .format_attrs = intel_arch_formats_attr,
2971 .events_sysfs_show = intel_event_sysfs_show,
2972
2973 /*
2974 * Virtual (or funny metal) CPU can define x86_pmu.extra_regs
2975 * together with PMU version 1 and thus be using core_pmu with
2976 * shared_regs. We need following callbacks here to allocate
2977 * it properly.
2978 */
2979 .cpu_prepare = intel_pmu_cpu_prepare,
2980 .cpu_starting = intel_pmu_cpu_starting,
2981 .cpu_dying = intel_pmu_cpu_dying,
2982 };
2983
2984 static __initconst const struct x86_pmu intel_pmu = {
2985 .name = "Intel",
2986 .handle_irq = intel_pmu_handle_irq,
2987 .disable_all = intel_pmu_disable_all,
2988 .enable_all = intel_pmu_enable_all,
2989 .enable = intel_pmu_enable_event,
2990 .disable = intel_pmu_disable_event,
2991 .hw_config = intel_pmu_hw_config,
2992 .schedule_events = x86_schedule_events,
2993 .eventsel = MSR_ARCH_PERFMON_EVENTSEL0,
2994 .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
2995 .event_map = intel_pmu_event_map,
2996 .max_events = ARRAY_SIZE(intel_perfmon_event_map),
2997 .apic = 1,
2998 .free_running_flags = PEBS_FREERUNNING_FLAGS,
2999 /*
3000 * Intel PMCs cannot be accessed sanely above 32 bit width,
3001 * so we install an artificial 1<<31 period regardless of
3002 * the generic event period:
3003 */
3004 .max_period = (1ULL << 31) - 1,
3005 .get_event_constraints = intel_get_event_constraints,
3006 .put_event_constraints = intel_put_event_constraints,
3007 .pebs_aliases = intel_pebs_aliases_core2,
3008
3009 .format_attrs = intel_arch3_formats_attr,
3010 .events_sysfs_show = intel_event_sysfs_show,
3011
3012 .cpu_prepare = intel_pmu_cpu_prepare,
3013 .cpu_starting = intel_pmu_cpu_starting,
3014 .cpu_dying = intel_pmu_cpu_dying,
3015 .guest_get_msrs = intel_guest_get_msrs,
3016 .sched_task = intel_pmu_sched_task,
3017 };
3018
intel_clovertown_quirk(void)3019 static __init void intel_clovertown_quirk(void)
3020 {
3021 /*
3022 * PEBS is unreliable due to:
3023 *
3024 * AJ67 - PEBS may experience CPL leaks
3025 * AJ68 - PEBS PMI may be delayed by one event
3026 * AJ69 - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
3027 * AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
3028 *
3029 * AJ67 could be worked around by restricting the OS/USR flags.
3030 * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
3031 *
3032 * AJ106 could possibly be worked around by not allowing LBR
3033 * usage from PEBS, including the fixup.
3034 * AJ68 could possibly be worked around by always programming
3035 * a pebs_event_reset[0] value and coping with the lost events.
3036 *
3037 * But taken together it might just make sense to not enable PEBS on
3038 * these chips.
3039 */
3040 pr_warn("PEBS disabled due to CPU errata\n");
3041 x86_pmu.pebs = 0;
3042 x86_pmu.pebs_constraints = NULL;
3043 }
3044
intel_snb_pebs_broken(int cpu)3045 static int intel_snb_pebs_broken(int cpu)
3046 {
3047 u32 rev = UINT_MAX; /* default to broken for unknown models */
3048
3049 switch (cpu_data(cpu).x86_model) {
3050 case 42: /* SNB */
3051 rev = 0x28;
3052 break;
3053
3054 case 45: /* SNB-EP */
3055 switch (cpu_data(cpu).x86_stepping) {
3056 case 6: rev = 0x618; break;
3057 case 7: rev = 0x70c; break;
3058 }
3059 }
3060
3061 return (cpu_data(cpu).microcode < rev);
3062 }
3063
intel_snb_check_microcode(void)3064 static void intel_snb_check_microcode(void)
3065 {
3066 int pebs_broken = 0;
3067 int cpu;
3068
3069 get_online_cpus();
3070 for_each_online_cpu(cpu) {
3071 if ((pebs_broken = intel_snb_pebs_broken(cpu)))
3072 break;
3073 }
3074 put_online_cpus();
3075
3076 if (pebs_broken == x86_pmu.pebs_broken)
3077 return;
3078
3079 /*
3080 * Serialized by the microcode lock..
3081 */
3082 if (x86_pmu.pebs_broken) {
3083 pr_info("PEBS enabled due to microcode update\n");
3084 x86_pmu.pebs_broken = 0;
3085 } else {
3086 pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
3087 x86_pmu.pebs_broken = 1;
3088 }
3089 }
3090
3091 /*
3092 * Under certain circumstances, access certain MSR may cause #GP.
3093 * The function tests if the input MSR can be safely accessed.
3094 */
check_msr(unsigned long msr,u64 mask)3095 static bool check_msr(unsigned long msr, u64 mask)
3096 {
3097 u64 val_old, val_new, val_tmp;
3098
3099 /*
3100 * Read the current value, change it and read it back to see if it
3101 * matches, this is needed to detect certain hardware emulators
3102 * (qemu/kvm) that don't trap on the MSR access and always return 0s.
3103 */
3104 if (rdmsrl_safe(msr, &val_old))
3105 return false;
3106
3107 /*
3108 * Only change the bits which can be updated by wrmsrl.
3109 */
3110 val_tmp = val_old ^ mask;
3111 if (wrmsrl_safe(msr, val_tmp) ||
3112 rdmsrl_safe(msr, &val_new))
3113 return false;
3114
3115 if (val_new != val_tmp)
3116 return false;
3117
3118 /* Here it's sure that the MSR can be safely accessed.
3119 * Restore the old value and return.
3120 */
3121 wrmsrl(msr, val_old);
3122
3123 return true;
3124 }
3125
intel_sandybridge_quirk(void)3126 static __init void intel_sandybridge_quirk(void)
3127 {
3128 x86_pmu.check_microcode = intel_snb_check_microcode;
3129 intel_snb_check_microcode();
3130 }
3131
3132 static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
3133 { PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
3134 { PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
3135 { PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
3136 { PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
3137 { PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
3138 { PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
3139 { PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
3140 };
3141
intel_arch_events_quirk(void)3142 static __init void intel_arch_events_quirk(void)
3143 {
3144 int bit;
3145
3146 /* disable event that reported as not presend by cpuid */
3147 for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
3148 intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
3149 pr_warn("CPUID marked event: \'%s\' unavailable\n",
3150 intel_arch_events_map[bit].name);
3151 }
3152 }
3153
intel_nehalem_quirk(void)3154 static __init void intel_nehalem_quirk(void)
3155 {
3156 union cpuid10_ebx ebx;
3157
3158 ebx.full = x86_pmu.events_maskl;
3159 if (ebx.split.no_branch_misses_retired) {
3160 /*
3161 * Erratum AAJ80 detected, we work it around by using
3162 * the BR_MISP_EXEC.ANY event. This will over-count
3163 * branch-misses, but it's still much better than the
3164 * architectural event which is often completely bogus:
3165 */
3166 intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
3167 ebx.split.no_branch_misses_retired = 0;
3168 x86_pmu.events_maskl = ebx.full;
3169 pr_info("CPU erratum AAJ80 worked around\n");
3170 }
3171 }
3172
3173 /*
3174 * enable software workaround for errata:
3175 * SNB: BJ122
3176 * IVB: BV98
3177 * HSW: HSD29
3178 *
3179 * Only needed when HT is enabled. However detecting
3180 * if HT is enabled is difficult (model specific). So instead,
3181 * we enable the workaround in the early boot, and verify if
3182 * it is needed in a later initcall phase once we have valid
3183 * topology information to check if HT is actually enabled
3184 */
intel_ht_bug(void)3185 static __init void intel_ht_bug(void)
3186 {
3187 x86_pmu.flags |= PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED;
3188
3189 x86_pmu.start_scheduling = intel_start_scheduling;
3190 x86_pmu.commit_scheduling = intel_commit_scheduling;
3191 x86_pmu.stop_scheduling = intel_stop_scheduling;
3192 }
3193
3194 EVENT_ATTR_STR(mem-loads, mem_ld_hsw, "event=0xcd,umask=0x1,ldlat=3");
3195 EVENT_ATTR_STR(mem-stores, mem_st_hsw, "event=0xd0,umask=0x82")
3196
3197 /* Haswell special events */
3198 EVENT_ATTR_STR(tx-start, tx_start, "event=0xc9,umask=0x1");
3199 EVENT_ATTR_STR(tx-commit, tx_commit, "event=0xc9,umask=0x2");
3200 EVENT_ATTR_STR(tx-abort, tx_abort, "event=0xc9,umask=0x4");
3201 EVENT_ATTR_STR(tx-capacity, tx_capacity, "event=0x54,umask=0x2");
3202 EVENT_ATTR_STR(tx-conflict, tx_conflict, "event=0x54,umask=0x1");
3203 EVENT_ATTR_STR(el-start, el_start, "event=0xc8,umask=0x1");
3204 EVENT_ATTR_STR(el-commit, el_commit, "event=0xc8,umask=0x2");
3205 EVENT_ATTR_STR(el-abort, el_abort, "event=0xc8,umask=0x4");
3206 EVENT_ATTR_STR(el-capacity, el_capacity, "event=0x54,umask=0x2");
3207 EVENT_ATTR_STR(el-conflict, el_conflict, "event=0x54,umask=0x1");
3208 EVENT_ATTR_STR(cycles-t, cycles_t, "event=0x3c,in_tx=1");
3209 EVENT_ATTR_STR(cycles-ct, cycles_ct, "event=0x3c,in_tx=1,in_tx_cp=1");
3210
3211 static struct attribute *hsw_events_attrs[] = {
3212 EVENT_PTR(tx_start),
3213 EVENT_PTR(tx_commit),
3214 EVENT_PTR(tx_abort),
3215 EVENT_PTR(tx_capacity),
3216 EVENT_PTR(tx_conflict),
3217 EVENT_PTR(el_start),
3218 EVENT_PTR(el_commit),
3219 EVENT_PTR(el_abort),
3220 EVENT_PTR(el_capacity),
3221 EVENT_PTR(el_conflict),
3222 EVENT_PTR(cycles_t),
3223 EVENT_PTR(cycles_ct),
3224 EVENT_PTR(mem_ld_hsw),
3225 EVENT_PTR(mem_st_hsw),
3226 NULL
3227 };
3228
intel_pmu_init(void)3229 __init int intel_pmu_init(void)
3230 {
3231 union cpuid10_edx edx;
3232 union cpuid10_eax eax;
3233 union cpuid10_ebx ebx;
3234 struct event_constraint *c;
3235 unsigned int unused;
3236 struct extra_reg *er;
3237 int version, i;
3238
3239 if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
3240 switch (boot_cpu_data.x86) {
3241 case 0x6:
3242 return p6_pmu_init();
3243 case 0xb:
3244 return knc_pmu_init();
3245 case 0xf:
3246 return p4_pmu_init();
3247 }
3248 return -ENODEV;
3249 }
3250
3251 /*
3252 * Check whether the Architectural PerfMon supports
3253 * Branch Misses Retired hw_event or not.
3254 */
3255 cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
3256 if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
3257 return -ENODEV;
3258
3259 version = eax.split.version_id;
3260 if (version < 2)
3261 x86_pmu = core_pmu;
3262 else
3263 x86_pmu = intel_pmu;
3264
3265 x86_pmu.version = version;
3266 x86_pmu.num_counters = eax.split.num_counters;
3267 x86_pmu.cntval_bits = eax.split.bit_width;
3268 x86_pmu.cntval_mask = (1ULL << eax.split.bit_width) - 1;
3269
3270 x86_pmu.events_maskl = ebx.full;
3271 x86_pmu.events_mask_len = eax.split.mask_length;
3272
3273 x86_pmu.max_pebs_events = min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);
3274
3275 /*
3276 * Quirk: v2 perfmon does not report fixed-purpose events, so
3277 * assume at least 3 events:
3278 */
3279 if (version > 1)
3280 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
3281
3282 if (boot_cpu_has(X86_FEATURE_PDCM)) {
3283 u64 capabilities;
3284
3285 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
3286 x86_pmu.intel_cap.capabilities = capabilities;
3287 }
3288
3289 intel_ds_init();
3290
3291 x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
3292
3293 /*
3294 * Install the hw-cache-events table:
3295 */
3296 switch (boot_cpu_data.x86_model) {
3297 case 14: /* 65nm Core "Yonah" */
3298 pr_cont("Core events, ");
3299 break;
3300
3301 case 15: /* 65nm Core2 "Merom" */
3302 x86_add_quirk(intel_clovertown_quirk);
3303 case 22: /* 65nm Core2 "Merom-L" */
3304 case 23: /* 45nm Core2 "Penryn" */
3305 case 29: /* 45nm Core2 "Dunnington (MP) */
3306 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
3307 sizeof(hw_cache_event_ids));
3308
3309 intel_pmu_lbr_init_core();
3310
3311 x86_pmu.event_constraints = intel_core2_event_constraints;
3312 x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
3313 pr_cont("Core2 events, ");
3314 break;
3315
3316 case 30: /* 45nm Nehalem */
3317 case 26: /* 45nm Nehalem-EP */
3318 case 46: /* 45nm Nehalem-EX */
3319 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
3320 sizeof(hw_cache_event_ids));
3321 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
3322 sizeof(hw_cache_extra_regs));
3323
3324 intel_pmu_lbr_init_nhm();
3325
3326 x86_pmu.event_constraints = intel_nehalem_event_constraints;
3327 x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
3328 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
3329 x86_pmu.extra_regs = intel_nehalem_extra_regs;
3330
3331 x86_pmu.cpu_events = nhm_events_attrs;
3332
3333 /* UOPS_ISSUED.STALLED_CYCLES */
3334 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
3335 X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3336 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
3337 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
3338 X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
3339
3340 intel_pmu_pebs_data_source_nhm();
3341 x86_add_quirk(intel_nehalem_quirk);
3342
3343 pr_cont("Nehalem events, ");
3344 break;
3345
3346 case 28: /* 45nm Atom "Pineview" */
3347 case 38: /* 45nm Atom "Lincroft" */
3348 case 39: /* 32nm Atom "Penwell" */
3349 case 53: /* 32nm Atom "Cloverview" */
3350 case 54: /* 32nm Atom "Cedarview" */
3351 memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
3352 sizeof(hw_cache_event_ids));
3353
3354 intel_pmu_lbr_init_atom();
3355
3356 x86_pmu.event_constraints = intel_gen_event_constraints;
3357 x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
3358 pr_cont("Atom events, ");
3359 break;
3360
3361 case 55: /* 22nm Atom "Silvermont" */
3362 case 76: /* 14nm Atom "Airmont" */
3363 case 77: /* 22nm Atom "Silvermont Avoton/Rangely" */
3364 memcpy(hw_cache_event_ids, slm_hw_cache_event_ids,
3365 sizeof(hw_cache_event_ids));
3366 memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs,
3367 sizeof(hw_cache_extra_regs));
3368
3369 intel_pmu_lbr_init_atom();
3370
3371 x86_pmu.event_constraints = intel_slm_event_constraints;
3372 x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
3373 x86_pmu.extra_regs = intel_slm_extra_regs;
3374 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3375 pr_cont("Silvermont events, ");
3376 break;
3377
3378 case 37: /* 32nm Westmere */
3379 case 44: /* 32nm Westmere-EP */
3380 case 47: /* 32nm Westmere-EX */
3381 memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
3382 sizeof(hw_cache_event_ids));
3383 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
3384 sizeof(hw_cache_extra_regs));
3385
3386 intel_pmu_lbr_init_nhm();
3387
3388 x86_pmu.event_constraints = intel_westmere_event_constraints;
3389 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
3390 x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
3391 x86_pmu.extra_regs = intel_westmere_extra_regs;
3392 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3393
3394 x86_pmu.cpu_events = nhm_events_attrs;
3395
3396 /* UOPS_ISSUED.STALLED_CYCLES */
3397 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
3398 X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3399 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
3400 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
3401 X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
3402
3403 intel_pmu_pebs_data_source_nhm();
3404 pr_cont("Westmere events, ");
3405 break;
3406
3407 case 42: /* 32nm SandyBridge */
3408 case 45: /* 32nm SandyBridge-E/EN/EP */
3409 x86_add_quirk(intel_sandybridge_quirk);
3410 x86_add_quirk(intel_ht_bug);
3411 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
3412 sizeof(hw_cache_event_ids));
3413 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
3414 sizeof(hw_cache_extra_regs));
3415
3416 intel_pmu_lbr_init_snb();
3417
3418 x86_pmu.event_constraints = intel_snb_event_constraints;
3419 x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
3420 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3421 if (boot_cpu_data.x86_model == 45)
3422 x86_pmu.extra_regs = intel_snbep_extra_regs;
3423 else
3424 x86_pmu.extra_regs = intel_snb_extra_regs;
3425
3426
3427 /* all extra regs are per-cpu when HT is on */
3428 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3429 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3430
3431 x86_pmu.cpu_events = snb_events_attrs;
3432
3433 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
3434 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
3435 X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3436 /* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
3437 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
3438 X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
3439
3440 pr_cont("SandyBridge events, ");
3441 break;
3442
3443 case 58: /* 22nm IvyBridge */
3444 case 62: /* 22nm IvyBridge-EP/EX */
3445 x86_add_quirk(intel_ht_bug);
3446 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
3447 sizeof(hw_cache_event_ids));
3448 /* dTLB-load-misses on IVB is different than SNB */
3449 hw_cache_event_ids[C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = 0x8108; /* DTLB_LOAD_MISSES.DEMAND_LD_MISS_CAUSES_A_WALK */
3450
3451 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
3452 sizeof(hw_cache_extra_regs));
3453
3454 intel_pmu_lbr_init_snb();
3455
3456 x86_pmu.event_constraints = intel_ivb_event_constraints;
3457 x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
3458 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3459 if (boot_cpu_data.x86_model == 62)
3460 x86_pmu.extra_regs = intel_snbep_extra_regs;
3461 else
3462 x86_pmu.extra_regs = intel_snb_extra_regs;
3463 /* all extra regs are per-cpu when HT is on */
3464 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3465 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3466
3467 x86_pmu.cpu_events = snb_events_attrs;
3468
3469 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
3470 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
3471 X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3472
3473 pr_cont("IvyBridge events, ");
3474 break;
3475
3476
3477 case 60: /* 22nm Haswell Core */
3478 case 63: /* 22nm Haswell Server */
3479 case 69: /* 22nm Haswell ULT */
3480 case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */
3481 x86_add_quirk(intel_ht_bug);
3482 x86_pmu.late_ack = true;
3483 memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
3484 memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
3485
3486 intel_pmu_lbr_init_hsw();
3487
3488 x86_pmu.event_constraints = intel_hsw_event_constraints;
3489 x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
3490 x86_pmu.extra_regs = intel_snbep_extra_regs;
3491 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3492 /* all extra regs are per-cpu when HT is on */
3493 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3494 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3495
3496 x86_pmu.hw_config = hsw_hw_config;
3497 x86_pmu.get_event_constraints = hsw_get_event_constraints;
3498 x86_pmu.cpu_events = hsw_events_attrs;
3499 x86_pmu.lbr_double_abort = true;
3500 pr_cont("Haswell events, ");
3501 break;
3502
3503 case 61: /* 14nm Broadwell Core-M */
3504 case 86: /* 14nm Broadwell Xeon D */
3505 case 71: /* 14nm Broadwell + GT3e (Intel Iris Pro graphics) */
3506 case 79: /* 14nm Broadwell Server */
3507 x86_pmu.late_ack = true;
3508 memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
3509 memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
3510
3511 /* L3_MISS_LOCAL_DRAM is BIT(26) in Broadwell */
3512 hw_cache_extra_regs[C(LL)][C(OP_READ)][C(RESULT_MISS)] = HSW_DEMAND_READ |
3513 BDW_L3_MISS|HSW_SNOOP_DRAM;
3514 hw_cache_extra_regs[C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = HSW_DEMAND_WRITE|BDW_L3_MISS|
3515 HSW_SNOOP_DRAM;
3516 hw_cache_extra_regs[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = HSW_DEMAND_READ|
3517 BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
3518 hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
3519 BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
3520
3521 intel_pmu_lbr_init_hsw();
3522
3523 x86_pmu.event_constraints = intel_bdw_event_constraints;
3524 x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
3525 x86_pmu.extra_regs = intel_snbep_extra_regs;
3526 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3527 /* all extra regs are per-cpu when HT is on */
3528 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3529 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3530
3531 x86_pmu.hw_config = hsw_hw_config;
3532 x86_pmu.get_event_constraints = hsw_get_event_constraints;
3533 x86_pmu.cpu_events = hsw_events_attrs;
3534 x86_pmu.limit_period = bdw_limit_period;
3535 pr_cont("Broadwell events, ");
3536 break;
3537
3538 case 78: /* 14nm Skylake Mobile */
3539 case 94: /* 14nm Skylake Desktop */
3540 x86_pmu.late_ack = true;
3541 memcpy(hw_cache_event_ids, skl_hw_cache_event_ids, sizeof(hw_cache_event_ids));
3542 memcpy(hw_cache_extra_regs, skl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
3543 intel_pmu_lbr_init_skl();
3544
3545 x86_pmu.event_constraints = intel_skl_event_constraints;
3546 x86_pmu.pebs_constraints = intel_skl_pebs_event_constraints;
3547 x86_pmu.extra_regs = intel_skl_extra_regs;
3548 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3549 /* all extra regs are per-cpu when HT is on */
3550 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3551 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3552
3553 x86_pmu.hw_config = hsw_hw_config;
3554 x86_pmu.get_event_constraints = hsw_get_event_constraints;
3555 x86_pmu.format_attrs = merge_attr(intel_arch3_formats_attr,
3556 skl_format_attr);
3557 WARN_ON(!x86_pmu.format_attrs);
3558 x86_pmu.cpu_events = hsw_events_attrs;
3559 pr_cont("Skylake events, ");
3560 break;
3561
3562 default:
3563 switch (x86_pmu.version) {
3564 case 1:
3565 x86_pmu.event_constraints = intel_v1_event_constraints;
3566 pr_cont("generic architected perfmon v1, ");
3567 break;
3568 default:
3569 /*
3570 * default constraints for v2 and up
3571 */
3572 x86_pmu.event_constraints = intel_gen_event_constraints;
3573 pr_cont("generic architected perfmon, ");
3574 break;
3575 }
3576 }
3577
3578 if (x86_pmu.num_counters > INTEL_PMC_MAX_GENERIC) {
3579 WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
3580 x86_pmu.num_counters, INTEL_PMC_MAX_GENERIC);
3581 x86_pmu.num_counters = INTEL_PMC_MAX_GENERIC;
3582 }
3583 x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1;
3584
3585 if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
3586 WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
3587 x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
3588 x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
3589 }
3590
3591 x86_pmu.intel_ctrl |=
3592 ((1LL << x86_pmu.num_counters_fixed)-1) << INTEL_PMC_IDX_FIXED;
3593
3594 if (x86_pmu.event_constraints) {
3595 /*
3596 * event on fixed counter2 (REF_CYCLES) only works on this
3597 * counter, so do not extend mask to generic counters
3598 */
3599 for_each_event_constraint(c, x86_pmu.event_constraints) {
3600 if (c->cmask == FIXED_EVENT_FLAGS
3601 && c->idxmsk64 != INTEL_PMC_MSK_FIXED_REF_CYCLES) {
3602 c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
3603 }
3604 c->idxmsk64 &=
3605 ~(~0ULL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
3606 c->weight = hweight64(c->idxmsk64);
3607 }
3608 }
3609
3610 /*
3611 * Access LBR MSR may cause #GP under certain circumstances.
3612 * E.g. KVM doesn't support LBR MSR
3613 * Check all LBT MSR here.
3614 * Disable LBR access if any LBR MSRs can not be accessed.
3615 */
3616 if (x86_pmu.lbr_nr && !check_msr(x86_pmu.lbr_tos, 0x3UL))
3617 x86_pmu.lbr_nr = 0;
3618 for (i = 0; i < x86_pmu.lbr_nr; i++) {
3619 if (!(check_msr(x86_pmu.lbr_from + i, 0xffffUL) &&
3620 check_msr(x86_pmu.lbr_to + i, 0xffffUL)))
3621 x86_pmu.lbr_nr = 0;
3622 }
3623
3624 /*
3625 * Access extra MSR may cause #GP under certain circumstances.
3626 * E.g. KVM doesn't support offcore event
3627 * Check all extra_regs here.
3628 */
3629 if (x86_pmu.extra_regs) {
3630 for (er = x86_pmu.extra_regs; er->msr; er++) {
3631 er->extra_msr_access = check_msr(er->msr, 0x11UL);
3632 /* Disable LBR select mapping */
3633 if ((er->idx == EXTRA_REG_LBR) && !er->extra_msr_access)
3634 x86_pmu.lbr_sel_map = NULL;
3635 }
3636 }
3637
3638 /* Support full width counters using alternative MSR range */
3639 if (x86_pmu.intel_cap.full_width_write) {
3640 x86_pmu.max_period = x86_pmu.cntval_mask >> 1;
3641 x86_pmu.perfctr = MSR_IA32_PMC0;
3642 pr_cont("full-width counters, ");
3643 }
3644
3645 return 0;
3646 }
3647
3648 /*
3649 * HT bug: phase 2 init
3650 * Called once we have valid topology information to check
3651 * whether or not HT is enabled
3652 * If HT is off, then we disable the workaround
3653 */
fixup_ht_bug(void)3654 static __init int fixup_ht_bug(void)
3655 {
3656 int cpu = smp_processor_id();
3657 int w, c;
3658 /*
3659 * problem not present on this CPU model, nothing to do
3660 */
3661 if (!(x86_pmu.flags & PMU_FL_EXCL_ENABLED))
3662 return 0;
3663
3664 w = cpumask_weight(topology_sibling_cpumask(cpu));
3665 if (w > 1) {
3666 pr_info("PMU erratum BJ122, BV98, HSD29 worked around, HT is on\n");
3667 return 0;
3668 }
3669
3670 if (lockup_detector_suspend() != 0) {
3671 pr_debug("failed to disable PMU erratum BJ122, BV98, HSD29 workaround\n");
3672 return 0;
3673 }
3674
3675 x86_pmu.flags &= ~(PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED);
3676
3677 x86_pmu.start_scheduling = NULL;
3678 x86_pmu.commit_scheduling = NULL;
3679 x86_pmu.stop_scheduling = NULL;
3680
3681 lockup_detector_resume();
3682
3683 get_online_cpus();
3684
3685 for_each_online_cpu(c) {
3686 free_excl_cntrs(c);
3687 }
3688
3689 put_online_cpus();
3690 pr_info("PMU erratum BJ122, BV98, HSD29 workaround disabled, HT off\n");
3691 return 0;
3692 }
3693 subsys_initcall(fixup_ht_bug)
3694