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 struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
21 E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "mem-loads"),
22 E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"),
28 static char mem_loads_name[100];
29 static bool mem_loads_name__init;
31 char * __weak perf_mem_events__name(int i)
33 if (i == PERF_MEM_EVENTS__LOAD) {
34 if (!mem_loads_name__init) {
35 mem_loads_name__init = true;
36 scnprintf(mem_loads_name, sizeof(mem_loads_name),
37 perf_mem_events[i].name,
38 perf_mem_events__loads_ldlat);
40 return mem_loads_name;
43 return (char *)perf_mem_events[i].name;
46 int perf_mem_events__parse(const char *str)
48 char *tok, *saveptr = NULL;
53 /* We need buffer that we know we can write to. */
54 buf = malloc(strlen(str) + 1);
60 tok = strtok_r((char *)buf, ",", &saveptr);
63 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
64 struct perf_mem_event *e = &perf_mem_events[j];
66 if (strstr(e->tag, tok))
67 e->record = found = true;
70 tok = strtok_r(NULL, ",", &saveptr);
78 pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
82 int perf_mem_events__init(void)
84 const char *mnt = sysfs__mount();
91 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
93 struct perf_mem_event *e = &perf_mem_events[j];
96 scnprintf(path, PATH_MAX, "%s/devices/cpu/events/%s",
100 e->supported = found = true;
103 return found ? 0 : -ENOENT;
106 void perf_mem_events__list(void)
110 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
111 struct perf_mem_event *e = &perf_mem_events[j];
113 fprintf(stderr, "%-13s%-*s%s\n",
115 verbose > 0 ? 25 : 0,
116 verbose > 0 ? perf_mem_events__name(j) : "",
117 e->supported ? ": available" : "");
121 static const char * const tlb_access[] = {
131 int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
134 u64 m = PERF_MEM_TLB_NA;
137 sz -= 1; /* -1 for null termination */
141 m = mem_info->data_src.mem_dtlb;
143 hit = m & PERF_MEM_TLB_HIT;
144 miss = m & PERF_MEM_TLB_MISS;
146 /* already taken care of */
147 m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
149 for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
156 l += scnprintf(out + l, sz - l, tlb_access[i]);
159 l += scnprintf(out, sz - l, "N/A");
161 l += scnprintf(out + l, sz - l, " hit");
163 l += scnprintf(out + l, sz - l, " miss");
168 static const char * const mem_lvl[] = {
177 "Remote RAM (1 hop)",
178 "Remote RAM (2 hops)",
179 "Remote Cache (1 hop)",
180 "Remote Cache (2 hops)",
185 static const char * const mem_lvlnum[] = {
186 [PERF_MEM_LVLNUM_ANY_CACHE] = "Any cache",
187 [PERF_MEM_LVLNUM_LFB] = "LFB",
188 [PERF_MEM_LVLNUM_RAM] = "RAM",
189 [PERF_MEM_LVLNUM_PMEM] = "PMEM",
190 [PERF_MEM_LVLNUM_NA] = "N/A",
193 int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
196 u64 m = PERF_MEM_LVL_NA;
201 m = mem_info->data_src.mem_lvl;
203 sz -= 1; /* -1 for null termination */
206 hit = m & PERF_MEM_LVL_HIT;
207 miss = m & PERF_MEM_LVL_MISS;
209 /* already taken care of */
210 m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
213 if (mem_info && mem_info->data_src.mem_remote) {
214 strcat(out, "Remote ");
219 for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
226 l += scnprintf(out + l, sz - l, mem_lvl[i]);
229 if (mem_info && mem_info->data_src.mem_lvl_num) {
230 int lvl = mem_info->data_src.mem_lvl_num;
236 l += scnprintf(out + l, sz - l, mem_lvlnum[lvl]);
238 l += scnprintf(out + l, sz - l, "L%d", lvl);
242 l += scnprintf(out + l, sz - l, "N/A");
244 l += scnprintf(out + l, sz - l, " hit");
246 l += scnprintf(out + l, sz - l, " miss");
251 static const char * const snoop_access[] = {
259 int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
262 u64 m = PERF_MEM_SNOOP_NA;
264 sz -= 1; /* -1 for null termination */
268 m = mem_info->data_src.mem_snoop;
270 for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
277 l += scnprintf(out + l, sz - l, snoop_access[i]);
280 (mem_info->data_src.mem_snoopx & PERF_MEM_SNOOPX_FWD)) {
285 l += scnprintf(out + l, sz - l, "Fwd");
289 l += scnprintf(out, sz - l, "N/A");
294 int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
296 u64 mask = PERF_MEM_LOCK_NA;
300 mask = mem_info->data_src.mem_lock;
302 if (mask & PERF_MEM_LOCK_NA)
303 l = scnprintf(out, sz, "N/A");
304 else if (mask & PERF_MEM_LOCK_LOCKED)
305 l = scnprintf(out, sz, "Yes");
307 l = scnprintf(out, sz, "No");
312 int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
316 i += perf_mem__lvl_scnprintf(out, sz, mem_info);
317 i += scnprintf(out + i, sz - i, "|SNP ");
318 i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
319 i += scnprintf(out + i, sz - i, "|TLB ");
320 i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info);
321 i += scnprintf(out + i, sz - i, "|LCK ");
322 i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info);
327 int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)
329 union perf_mem_data_src *data_src = &mi->data_src;
330 u64 daddr = mi->daddr.addr;
331 u64 op = data_src->mem_op;
332 u64 lvl = data_src->mem_lvl;
333 u64 snoop = data_src->mem_snoop;
334 u64 lock = data_src->mem_lock;
336 * Skylake might report unknown remote level via this
337 * bit, consider it when evaluating remote HITMs.
339 bool mrem = data_src->mem_remote;
342 #define HITM_INC(__f) \
348 #define P(a, b) PERF_MEM_##a##_##b
352 if (lock & P(LOCK, LOCKED)) stats->locks++;
354 if (op & P(OP, LOAD)) {
363 if (lvl & P(LVL, HIT)) {
364 if (lvl & P(LVL, UNC)) stats->ld_uncache++;
365 if (lvl & P(LVL, IO)) stats->ld_io++;
366 if (lvl & P(LVL, LFB)) stats->ld_fbhit++;
367 if (lvl & P(LVL, L1 )) stats->ld_l1hit++;
368 if (lvl & P(LVL, L2 )) stats->ld_l2hit++;
369 if (lvl & P(LVL, L3 )) {
370 if (snoop & P(SNOOP, HITM))
376 if (lvl & P(LVL, LOC_RAM)) {
378 if (snoop & P(SNOOP, HIT))
384 if ((lvl & P(LVL, REM_RAM1)) ||
385 (lvl & P(LVL, REM_RAM2)) ||
388 if (snoop & P(SNOOP, HIT))
395 if ((lvl & P(LVL, REM_CCE1)) ||
396 (lvl & P(LVL, REM_CCE2)) ||
398 if (snoop & P(SNOOP, HIT))
400 else if (snoop & P(SNOOP, HITM))
404 if ((lvl & P(LVL, MISS)))
407 } else if (op & P(OP, STORE)) {
416 if (lvl & P(LVL, HIT)) {
417 if (lvl & P(LVL, UNC)) stats->st_uncache++;
418 if (lvl & P(LVL, L1 )) stats->st_l1hit++;
420 if (lvl & P(LVL, MISS))
421 if (lvl & P(LVL, L1)) stats->st_l1miss++;
423 /* unparsable data_src? */
428 if (!mi->daddr.ms.map || !mi->iaddr.ms.map) {
438 void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
440 stats->nr_entries += add->nr_entries;
442 stats->locks += add->locks;
443 stats->store += add->store;
444 stats->st_uncache += add->st_uncache;
445 stats->st_noadrs += add->st_noadrs;
446 stats->st_l1hit += add->st_l1hit;
447 stats->st_l1miss += add->st_l1miss;
448 stats->load += add->load;
449 stats->ld_excl += add->ld_excl;
450 stats->ld_shared += add->ld_shared;
451 stats->ld_uncache += add->ld_uncache;
452 stats->ld_io += add->ld_io;
453 stats->ld_miss += add->ld_miss;
454 stats->ld_noadrs += add->ld_noadrs;
455 stats->ld_fbhit += add->ld_fbhit;
456 stats->ld_l1hit += add->ld_l1hit;
457 stats->ld_l2hit += add->ld_l2hit;
458 stats->ld_llchit += add->ld_llchit;
459 stats->lcl_hitm += add->lcl_hitm;
460 stats->rmt_hitm += add->rmt_hitm;
461 stats->tot_hitm += add->tot_hitm;
462 stats->rmt_hit += add->rmt_hit;
463 stats->lcl_dram += add->lcl_dram;
464 stats->rmt_dram += add->rmt_dram;
465 stats->nomap += add->nomap;
466 stats->noparse += add->noparse;