9 #include "mem-events.h"
13 unsigned int perf_mem_events__loads_ldlat = 30;
15 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
17 struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
18 E("ldlat-loads", "cpu/mem-loads,ldlat=%u/P", "mem-loads"),
19 E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"),
25 static char mem_loads_name[100];
26 static bool mem_loads_name__init;
28 char *perf_mem_events__name(int i)
30 if (i == PERF_MEM_EVENTS__LOAD) {
31 if (!mem_loads_name__init) {
32 mem_loads_name__init = true;
33 scnprintf(mem_loads_name, sizeof(mem_loads_name),
34 perf_mem_events[i].name,
35 perf_mem_events__loads_ldlat);
37 return mem_loads_name;
40 return (char *)perf_mem_events[i].name;
43 int perf_mem_events__parse(const char *str)
45 char *tok, *saveptr = NULL;
50 /* We need buffer that we know we can write to. */
51 buf = malloc(strlen(str) + 1);
57 tok = strtok_r((char *)buf, ",", &saveptr);
60 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
61 struct perf_mem_event *e = &perf_mem_events[j];
63 if (strstr(e->tag, tok))
64 e->record = found = true;
67 tok = strtok_r(NULL, ",", &saveptr);
75 pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
79 int perf_mem_events__init(void)
81 const char *mnt = sysfs__mount();
88 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
90 struct perf_mem_event *e = &perf_mem_events[j];
93 scnprintf(path, PATH_MAX, "%s/devices/cpu/events/%s",
97 e->supported = found = true;
100 return found ? 0 : -ENOENT;
103 static const char * const tlb_access[] = {
113 int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
116 u64 m = PERF_MEM_TLB_NA;
119 sz -= 1; /* -1 for null termination */
123 m = mem_info->data_src.mem_dtlb;
125 hit = m & PERF_MEM_TLB_HIT;
126 miss = m & PERF_MEM_TLB_MISS;
128 /* already taken care of */
129 m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
131 for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
138 l += scnprintf(out + l, sz - l, tlb_access[i]);
141 l += scnprintf(out, sz - l, "N/A");
143 l += scnprintf(out + l, sz - l, " hit");
145 l += scnprintf(out + l, sz - l, " miss");
150 static const char * const mem_lvl[] = {
159 "Remote RAM (1 hop)",
160 "Remote RAM (2 hops)",
161 "Remote Cache (1 hop)",
162 "Remote Cache (2 hops)",
167 int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
170 u64 m = PERF_MEM_LVL_NA;
174 m = mem_info->data_src.mem_lvl;
176 sz -= 1; /* -1 for null termination */
179 hit = m & PERF_MEM_LVL_HIT;
180 miss = m & PERF_MEM_LVL_MISS;
182 /* already taken care of */
183 m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
185 for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
192 l += scnprintf(out + l, sz - l, mem_lvl[i]);
195 l += scnprintf(out, sz - l, "N/A");
197 l += scnprintf(out + l, sz - l, " hit");
199 l += scnprintf(out + l, sz - l, " miss");
204 static const char * const snoop_access[] = {
212 int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
215 u64 m = PERF_MEM_SNOOP_NA;
217 sz -= 1; /* -1 for null termination */
221 m = mem_info->data_src.mem_snoop;
223 for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
230 l += scnprintf(out + l, sz - l, snoop_access[i]);
234 l += scnprintf(out, sz - l, "N/A");
239 int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
241 u64 mask = PERF_MEM_LOCK_NA;
245 mask = mem_info->data_src.mem_lock;
247 if (mask & PERF_MEM_LOCK_NA)
248 l = scnprintf(out, sz, "N/A");
249 else if (mask & PERF_MEM_LOCK_LOCKED)
250 l = scnprintf(out, sz, "Yes");
252 l = scnprintf(out, sz, "No");
257 int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
261 i += perf_mem__lvl_scnprintf(out, sz, mem_info);
262 i += scnprintf(out + i, sz - i, "|SNP ");
263 i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
264 i += scnprintf(out + i, sz - i, "|TLB ");
265 i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info);
266 i += scnprintf(out + i, sz - i, "|LCK ");
267 i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info);