1// SPDX-License-Identifier: GPL-2.0
2/*
3 * An empty pmu-events.c file used when there is no architecture json files in
4 * arch or when the jevents.py script cannot be run.
5 *
6 * The test cpu/soc is provided for testing.
7 */
8#include "pmu-events/pmu-events.h"
9#include "util/header.h"
10#include "util/pmu.h"
11#include <string.h>
12#include <stddef.h>
13
14static const struct pmu_event pmu_events__test_soc_cpu[] = {
15 {
16 .name = "l3_cache_rd",
17 .event = "event=0x40",
18 .desc = "L3 cache access, read",
19 .topic = "cache",
20 .long_desc = "Attributable Level 3 cache access, read",
21 },
22 {
23 .name = "segment_reg_loads.any",
24 .event = "event=0x6,period=200000,umask=0x80",
25 .desc = "Number of segment register loads",
26 .topic = "other",
27 },
28 {
29 .name = "dispatch_blocked.any",
30 .event = "event=0x9,period=200000,umask=0x20",
31 .desc = "Memory cluster signals to block micro-op dispatch for any reason",
32 .topic = "other",
33 },
34 {
35 .name = "eist_trans",
36 .event = "event=0x3a,period=200000,umask=0x0",
37 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions",
38 .topic = "other",
39 },
40 {
41 .name = "uncore_hisi_ddrc.flux_wcmd",
42 .event = "event=0x2",
43 .desc = "DDRC write commands. Unit: hisi_sccl,ddrc ",
44 .topic = "uncore",
45 .long_desc = "DDRC write commands",
46 .pmu = "hisi_sccl,ddrc",
47 },
48 {
49 .name = "unc_cbo_xsnp_response.miss_eviction",
50 .event = "event=0x22,umask=0x81",
51 .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core. Unit: uncore_cbox ",
52 .topic = "uncore",
53 .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core",
54 .pmu = "uncore_cbox",
55 },
56 {
57 .name = "event-hyphen",
58 .event = "event=0xe0,umask=0x00",
59 .desc = "UNC_CBO_HYPHEN. Unit: uncore_cbox ",
60 .topic = "uncore",
61 .long_desc = "UNC_CBO_HYPHEN",
62 .pmu = "uncore_cbox",
63 },
64 {
65 .name = "event-two-hyph",
66 .event = "event=0xc0,umask=0x00",
67 .desc = "UNC_CBO_TWO_HYPH. Unit: uncore_cbox ",
68 .topic = "uncore",
69 .long_desc = "UNC_CBO_TWO_HYPH",
70 .pmu = "uncore_cbox",
71 },
72 {
73 .name = "uncore_hisi_l3c.rd_hit_cpipe",
74 .event = "event=0x7",
75 .desc = "Total read hits. Unit: hisi_sccl,l3c ",
76 .topic = "uncore",
77 .long_desc = "Total read hits",
78 .pmu = "hisi_sccl,l3c",
79 },
80 {
81 .name = "uncore_imc_free_running.cache_miss",
82 .event = "event=0x12",
83 .desc = "Total cache misses. Unit: uncore_imc_free_running ",
84 .topic = "uncore",
85 .long_desc = "Total cache misses",
86 .pmu = "uncore_imc_free_running",
87 },
88 {
89 .name = "uncore_imc.cache_hits",
90 .event = "event=0x34",
91 .desc = "Total cache hits. Unit: uncore_imc ",
92 .topic = "uncore",
93 .long_desc = "Total cache hits",
94 .pmu = "uncore_imc",
95 },
96 {
97 .name = "bp_l1_btb_correct",
98 .event = "event=0x8a",
99 .desc = "L1 BTB Correction",
100 .topic = "branch",
101 },
102 {
103 .name = "bp_l2_btb_correct",
104 .event = "event=0x8b",
105 .desc = "L2 BTB Correction",
106 .topic = "branch",
107 },
108 {
109 .name = 0,
110 .event = 0,
111 .desc = 0,
112 },
113};
114
115static const struct pmu_metric pmu_metrics__test_soc_cpu[] = {
116 {
117 .metric_expr = "1 / IPC",
118 .metric_name = "CPI",
119 },
120 {
121 .metric_expr = "inst_retired.any / cpu_clk_unhalted.thread",
122 .metric_name = "IPC",
123 .metric_group = "group1",
124 },
125 {
126 .metric_expr = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
127 "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
128 .metric_name = "Frontend_Bound_SMT",
129 },
130 {
131 .metric_expr = "l1d\\-loads\\-misses / inst_retired.any",
132 .metric_name = "dcache_miss_cpi",
133 },
134 {
135 .metric_expr = "l1i\\-loads\\-misses / inst_retired.any",
136 .metric_name = "icache_miss_cycles",
137 },
138 {
139 .metric_expr = "(dcache_miss_cpi + icache_miss_cycles)",
140 .metric_name = "cache_miss_cycles",
141 .metric_group = "group1",
142 },
143 {
144 .metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
145 .metric_name = "DCache_L2_All_Hits",
146 },
147 {
148 .metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + "
149 "l2_rqsts.pf_miss + l2_rqsts.rfo_miss",
150 .metric_name = "DCache_L2_All_Miss",
151 },
152 {
153 .metric_expr = "DCache_L2_All_Hits + DCache_L2_All_Miss",
154 .metric_name = "DCache_L2_All",
155 },
156 {
157 .metric_expr = "d_ratio(DCache_L2_All_Hits, DCache_L2_All)",
158 .metric_name = "DCache_L2_Hits",
159 },
160 {
161 .metric_expr = "d_ratio(DCache_L2_All_Miss, DCache_L2_All)",
162 .metric_name = "DCache_L2_Misses",
163 },
164 {
165 .metric_expr = "ipc + M2",
166 .metric_name = "M1",
167 },
168 {
169 .metric_expr = "ipc + M1",
170 .metric_name = "M2",
171 },
172 {
173 .metric_expr = "1/M3",
174 .metric_name = "M3",
175 },
176 {
177 .metric_expr = "64 * l1d.replacement / 1000000000 / duration_time",
178 .metric_name = "L1D_Cache_Fill_BW",
179 },
180 {
181 .metric_expr = 0,
182 .metric_name = 0,
183 },
184};
185
186/* Struct used to make the PMU event table implementation opaque to callers. */
187struct pmu_events_table {
188 const struct pmu_event *entries;
189};
190
191/* Struct used to make the PMU metric table implementation opaque to callers. */
192struct pmu_metrics_table {
193 const struct pmu_metric *entries;
194};
195
196/*
197 * Map a CPU to its table of PMU events. The CPU is identified by the
198 * cpuid field, which is an arch-specific identifier for the CPU.
199 * The identifier specified in tools/perf/pmu-events/arch/xxx/mapfile
200 * must match the get_cpuid_str() in tools/perf/arch/xxx/util/header.c)
201 *
202 * The cpuid can contain any character other than the comma.
203 */
204struct pmu_events_map {
205 const char *arch;
206 const char *cpuid;
207 const struct pmu_events_table event_table;
208 const struct pmu_metrics_table metric_table;
209};
210
211/*
212 * Global table mapping each known CPU for the architecture to its
213 * table of PMU events.
214 */
215static const struct pmu_events_map pmu_events_map[] = {
216 {
217 .arch = "testarch",
218 .cpuid = "testcpu",
219 .event_table = { pmu_events__test_soc_cpu },
220 .metric_table = { pmu_metrics__test_soc_cpu },
221 },
222 {
223 .arch = 0,
224 .cpuid = 0,
225 .event_table = { 0 },
226 .metric_table = { 0 },
227 },
228};
229
230static const struct pmu_event pmu_events__test_soc_sys[] = {
231 {
232 .name = "sys_ddr_pmu.write_cycles",
233 .event = "event=0x2b",
234 .desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ",
235 .compat = "v8",
236 .topic = "uncore",
237 .pmu = "uncore_sys_ddr_pmu",
238 },
239 {
240 .name = "sys_ccn_pmu.read_cycles",
241 .event = "config=0x2c",
242 .desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ",
243 .compat = "0x01",
244 .topic = "uncore",
245 .pmu = "uncore_sys_ccn_pmu",
246 },
247 {
248 .name = "sys_cmn_pmu.hnf_cache_miss",
249 .event = "eventid=0x1,type=0x5",
250 .desc = "Counts total cache misses in first lookup result (high priority). Unit: uncore_sys_cmn_pmu ",
251 .compat = "(434|436|43c|43a).*",
252 .topic = "uncore",
253 .pmu = "uncore_sys_cmn_pmu",
254 },
255 {
256 .name = 0,
257 .event = 0,
258 .desc = 0,
259 },
260};
261
262struct pmu_sys_events {
263 const char *name;
264 const struct pmu_events_table table;
265};
266
267static const struct pmu_sys_events pmu_sys_event_tables[] = {
268 {
269 .table = { pmu_events__test_soc_sys },
270 .name = "pmu_events__test_soc_sys",
271 },
272 {
273 .table = { 0 }
274 },
275};
276
277int pmu_events_table__for_each_event(const struct pmu_events_table *table, struct perf_pmu *pmu,
278 pmu_event_iter_fn fn, void *data)
279{
280 for (const struct pmu_event *pe = &table->entries[0]; pe->name; pe++) {
281 int ret;
282
283 if (pmu && !pmu__name_match(pmu, pe->pmu))
284 continue;
285
286 ret = fn(pe, table, data);
287 if (ret)
288 return ret;
289 }
290 return 0;
291}
292
293int pmu_events_table__find_event(const struct pmu_events_table *table,
294 struct perf_pmu *pmu,
295 const char *name,
296 pmu_event_iter_fn fn,
297 void *data)
298{
299 for (const struct pmu_event *pe = &table->entries[0]; pe->name; pe++) {
300 if (pmu && !pmu__name_match(pmu, pe->pmu))
301 continue;
302
303 if (!strcasecmp(pe->name, name))
304 return fn(pe, table, data);
305 }
306 return -1000;
307}
308
309size_t pmu_events_table__num_events(const struct pmu_events_table *table,
310 struct perf_pmu *pmu)
311{
312 size_t count = 0;
313
314 for (const struct pmu_event *pe = &table->entries[0]; pe->name; pe++) {
315 if (pmu && !pmu__name_match(pmu, pe->pmu))
316 continue;
317
318 count++;
319 }
320 return count;
321}
322
323int pmu_metrics_table__for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
324 void *data)
325{
326 for (const struct pmu_metric *pm = &table->entries[0]; pm->metric_expr; pm++) {
327 int ret = fn(pm, table, data);
328
329 if (ret)
330 return ret;
331 }
332 return 0;
333}
334
335const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
336{
337 const struct pmu_events_table *table = NULL;
338 char *cpuid = perf_pmu__getcpuid(pmu);
339 int i;
340
341 /* on some platforms which uses cpus map, cpuid can be NULL for
342 * PMUs other than CORE PMUs.
343 */
344 if (!cpuid)
345 return NULL;
346
347 i = 0;
348 for (;;) {
349 const struct pmu_events_map *map = &pmu_events_map[i++];
350
351 if (!map->cpuid)
352 break;
353
354 if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
355 table = &map->event_table;
356 break;
357 }
358 }
359 free(cpuid);
360 return table;
361}
362
363const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
364{
365 const struct pmu_metrics_table *table = NULL;
366 char *cpuid = perf_pmu__getcpuid(pmu);
367 int i;
368
369 /* on some platforms which uses cpus map, cpuid can be NULL for
370 * PMUs other than CORE PMUs.
371 */
372 if (!cpuid)
373 return NULL;
374
375 i = 0;
376 for (;;) {
377 const struct pmu_events_map *map = &pmu_events_map[i++];
378
379 if (!map->cpuid)
380 break;
381
382 if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
383 table = &map->metric_table;
384 break;
385 }
386 }
387 free(cpuid);
388 return table;
389}
390
391const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
392{
393 for (const struct pmu_events_map *tables = &pmu_events_map[0];
394 tables->arch;
395 tables++) {
396 if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
397 return &tables->event_table;
398 }
399 return NULL;
400}
401
402const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
403{
404 for (const struct pmu_events_map *tables = &pmu_events_map[0];
405 tables->arch;
406 tables++) {
407 if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
408 return &tables->metric_table;
409 }
410 return NULL;
411}
412
413int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
414{
415 for (const struct pmu_events_map *tables = &pmu_events_map[0]; tables->arch; tables++) {
416 int ret = pmu_events_table__for_each_event(&tables->event_table,
417 /*pmu=*/ NULL, fn, data);
418
419 if (ret)
420 return ret;
421 }
422 return 0;
423}
424
425int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
426{
427 for (const struct pmu_events_map *tables = &pmu_events_map[0];
428 tables->arch;
429 tables++) {
430 int ret = pmu_metrics_table__for_each_metric(&tables->metric_table, fn, data);
431
432 if (ret)
433 return ret;
434 }
435 return 0;
436}
437
438const struct pmu_events_table *find_sys_events_table(const char *name)
439{
440 for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
441 tables->name;
442 tables++) {
443 if (!strcmp(tables->name, name))
444 return &tables->table;
445 }
446 return NULL;
447}
448
449int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data)
450{
451 for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
452 tables->name;
453 tables++) {
454 int ret = pmu_events_table__for_each_event(&tables->table, /*pmu=*/ NULL, fn, data);
455
456 if (ret)
457 return ret;
458 }
459 return 0;
460}
461
462int pmu_for_each_sys_metric(pmu_metric_iter_fn fn __maybe_unused, void *data __maybe_unused)
463{
464 return 0;
465}
466
467const char *describe_metricgroup(const char *group __maybe_unused)
468{
469 return NULL;
470}
471

source code of linux/tools/perf/pmu-events/empty-pmu-events.c