1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/kernel.h>
11 #include "map_symbol.h"
12 #include "mem-events.h"
16 unsigned int perf_mem_events__loads_ldlat = 30;
18 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
20 static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
21 E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "cpu/events/mem-loads"),
22 E("ldlat-stores", "cpu/mem-stores/P", "cpu/events/mem-stores"),
29 static char mem_loads_name[100];
30 static bool mem_loads_name__init;
32 struct perf_mem_event * __weak perf_mem_events__ptr(int i)
34 if (i >= PERF_MEM_EVENTS__MAX)
37 return &perf_mem_events[i];
40 char * __weak perf_mem_events__name(int i)
42 struct perf_mem_event *e = perf_mem_events__ptr(i);
47 if (i == PERF_MEM_EVENTS__LOAD) {
48 if (!mem_loads_name__init) {
49 mem_loads_name__init = true;
50 scnprintf(mem_loads_name, sizeof(mem_loads_name),
51 e->name, perf_mem_events__loads_ldlat);
53 return mem_loads_name;
56 return (char *)e->name;
59 __weak bool is_mem_loads_aux_event(struct evsel *leader __maybe_unused)
64 int perf_mem_events__parse(const char *str)
66 char *tok, *saveptr = NULL;
71 /* We need buffer that we know we can write to. */
72 buf = malloc(strlen(str) + 1);
78 tok = strtok_r((char *)buf, ",", &saveptr);
81 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
82 struct perf_mem_event *e = perf_mem_events__ptr(j);
87 if (strstr(e->tag, tok))
88 e->record = found = true;
91 tok = strtok_r(NULL, ",", &saveptr);
99 pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
103 int perf_mem_events__init(void)
105 const char *mnt = sysfs__mount();
112 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
114 struct perf_mem_event *e = perf_mem_events__ptr(j);
118 * If the event entry isn't valid, skip initialization
119 * and "e->supported" will keep false.
124 scnprintf(path, PATH_MAX, "%s/devices/%s",
127 if (!stat(path, &st))
128 e->supported = found = true;
131 return found ? 0 : -ENOENT;
134 void perf_mem_events__list(void)
138 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
139 struct perf_mem_event *e = perf_mem_events__ptr(j);
141 fprintf(stderr, "%-13s%-*s%s\n",
143 verbose > 0 ? 25 : 0,
144 verbose > 0 ? perf_mem_events__name(j) : "",
145 e->supported ? ": available" : "");
149 static const char * const tlb_access[] = {
159 int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
162 u64 m = PERF_MEM_TLB_NA;
165 sz -= 1; /* -1 for null termination */
169 m = mem_info->data_src.mem_dtlb;
171 hit = m & PERF_MEM_TLB_HIT;
172 miss = m & PERF_MEM_TLB_MISS;
174 /* already taken care of */
175 m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
177 for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
184 l += scnprintf(out + l, sz - l, tlb_access[i]);
187 l += scnprintf(out, sz - l, "N/A");
189 l += scnprintf(out + l, sz - l, " hit");
191 l += scnprintf(out + l, sz - l, " miss");
196 static const char * const mem_lvl[] = {
205 "Remote RAM (1 hop)",
206 "Remote RAM (2 hops)",
207 "Remote Cache (1 hop)",
208 "Remote Cache (2 hops)",
213 static const char * const mem_lvlnum[] = {
214 [PERF_MEM_LVLNUM_ANY_CACHE] = "Any cache",
215 [PERF_MEM_LVLNUM_LFB] = "LFB",
216 [PERF_MEM_LVLNUM_RAM] = "RAM",
217 [PERF_MEM_LVLNUM_PMEM] = "PMEM",
218 [PERF_MEM_LVLNUM_NA] = "N/A",
221 int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
224 u64 m = PERF_MEM_LVL_NA;
229 m = mem_info->data_src.mem_lvl;
231 sz -= 1; /* -1 for null termination */
234 hit = m & PERF_MEM_LVL_HIT;
235 miss = m & PERF_MEM_LVL_MISS;
237 /* already taken care of */
238 m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
241 if (mem_info && mem_info->data_src.mem_remote) {
242 strcat(out, "Remote ");
247 for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
254 l += scnprintf(out + l, sz - l, mem_lvl[i]);
257 if (mem_info && mem_info->data_src.mem_lvl_num) {
258 int lvl = mem_info->data_src.mem_lvl_num;
264 l += scnprintf(out + l, sz - l, mem_lvlnum[lvl]);
266 l += scnprintf(out + l, sz - l, "L%d", lvl);
270 l += scnprintf(out + l, sz - l, "N/A");
272 l += scnprintf(out + l, sz - l, " hit");
274 l += scnprintf(out + l, sz - l, " miss");
279 static const char * const snoop_access[] = {
287 int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
290 u64 m = PERF_MEM_SNOOP_NA;
292 sz -= 1; /* -1 for null termination */
296 m = mem_info->data_src.mem_snoop;
298 for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
305 l += scnprintf(out + l, sz - l, snoop_access[i]);
308 (mem_info->data_src.mem_snoopx & PERF_MEM_SNOOPX_FWD)) {
313 l += scnprintf(out + l, sz - l, "Fwd");
317 l += scnprintf(out, sz - l, "N/A");
322 int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
324 u64 mask = PERF_MEM_LOCK_NA;
328 mask = mem_info->data_src.mem_lock;
330 if (mask & PERF_MEM_LOCK_NA)
331 l = scnprintf(out, sz, "N/A");
332 else if (mask & PERF_MEM_LOCK_LOCKED)
333 l = scnprintf(out, sz, "Yes");
335 l = scnprintf(out, sz, "No");
340 int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
343 u64 mask = PERF_MEM_BLK_NA;
345 sz -= 1; /* -1 for null termination */
349 mask = mem_info->data_src.mem_blk;
351 if (!mask || (mask & PERF_MEM_BLK_NA)) {
352 l += scnprintf(out + l, sz - l, " N/A");
355 if (mask & PERF_MEM_BLK_DATA)
356 l += scnprintf(out + l, sz - l, " Data");
357 if (mask & PERF_MEM_BLK_ADDR)
358 l += scnprintf(out + l, sz - l, " Addr");
363 int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
367 i += perf_mem__lvl_scnprintf(out, sz, mem_info);
368 i += scnprintf(out + i, sz - i, "|SNP ");
369 i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
370 i += scnprintf(out + i, sz - i, "|TLB ");
371 i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info);
372 i += scnprintf(out + i, sz - i, "|LCK ");
373 i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info);
374 i += scnprintf(out + i, sz - i, "|BLK ");
375 i += perf_mem__blk_scnprintf(out + i, sz - i, mem_info);
380 int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)
382 union perf_mem_data_src *data_src = &mi->data_src;
383 u64 daddr = mi->daddr.addr;
384 u64 op = data_src->mem_op;
385 u64 lvl = data_src->mem_lvl;
386 u64 snoop = data_src->mem_snoop;
387 u64 lock = data_src->mem_lock;
388 u64 blk = data_src->mem_blk;
390 * Skylake might report unknown remote level via this
391 * bit, consider it when evaluating remote HITMs.
393 bool mrem = data_src->mem_remote;
396 #define HITM_INC(__f) \
402 #define P(a, b) PERF_MEM_##a##_##b
406 if (lock & P(LOCK, LOCKED)) stats->locks++;
408 if (blk & P(BLK, DATA)) stats->blk_data++;
409 if (blk & P(BLK, ADDR)) stats->blk_addr++;
411 if (op & P(OP, LOAD)) {
420 if (lvl & P(LVL, HIT)) {
421 if (lvl & P(LVL, UNC)) stats->ld_uncache++;
422 if (lvl & P(LVL, IO)) stats->ld_io++;
423 if (lvl & P(LVL, LFB)) stats->ld_fbhit++;
424 if (lvl & P(LVL, L1 )) stats->ld_l1hit++;
425 if (lvl & P(LVL, L2 )) stats->ld_l2hit++;
426 if (lvl & P(LVL, L3 )) {
427 if (snoop & P(SNOOP, HITM))
433 if (lvl & P(LVL, LOC_RAM)) {
435 if (snoop & P(SNOOP, HIT))
441 if ((lvl & P(LVL, REM_RAM1)) ||
442 (lvl & P(LVL, REM_RAM2)) ||
445 if (snoop & P(SNOOP, HIT))
452 if ((lvl & P(LVL, REM_CCE1)) ||
453 (lvl & P(LVL, REM_CCE2)) ||
455 if (snoop & P(SNOOP, HIT))
457 else if (snoop & P(SNOOP, HITM))
461 if ((lvl & P(LVL, MISS)))
464 } else if (op & P(OP, STORE)) {
473 if (lvl & P(LVL, HIT)) {
474 if (lvl & P(LVL, UNC)) stats->st_uncache++;
475 if (lvl & P(LVL, L1 )) stats->st_l1hit++;
477 if (lvl & P(LVL, MISS))
478 if (lvl & P(LVL, L1)) stats->st_l1miss++;
480 /* unparsable data_src? */
485 if (!mi->daddr.ms.map || !mi->iaddr.ms.map) {
495 void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
497 stats->nr_entries += add->nr_entries;
499 stats->locks += add->locks;
500 stats->store += add->store;
501 stats->st_uncache += add->st_uncache;
502 stats->st_noadrs += add->st_noadrs;
503 stats->st_l1hit += add->st_l1hit;
504 stats->st_l1miss += add->st_l1miss;
505 stats->load += add->load;
506 stats->ld_excl += add->ld_excl;
507 stats->ld_shared += add->ld_shared;
508 stats->ld_uncache += add->ld_uncache;
509 stats->ld_io += add->ld_io;
510 stats->ld_miss += add->ld_miss;
511 stats->ld_noadrs += add->ld_noadrs;
512 stats->ld_fbhit += add->ld_fbhit;
513 stats->ld_l1hit += add->ld_l1hit;
514 stats->ld_l2hit += add->ld_l2hit;
515 stats->ld_llchit += add->ld_llchit;
516 stats->lcl_hitm += add->lcl_hitm;
517 stats->rmt_hitm += add->rmt_hitm;
518 stats->tot_hitm += add->tot_hitm;
519 stats->rmt_hit += add->rmt_hit;
520 stats->lcl_dram += add->lcl_dram;
521 stats->rmt_dram += add->rmt_dram;
522 stats->blk_data += add->blk_data;
523 stats->blk_addr += add->blk_addr;
524 stats->nomap += add->nomap;
525 stats->noparse += add->noparse;