9 #include "mem-events.h"
13 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
15 struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
16 E("ldlat-loads", "cpu/mem-loads,ldlat=30/P", "mem-loads"),
17 E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"),
23 char *perf_mem_events__name(int i)
25 return (char *)perf_mem_events[i].name;
28 int perf_mem_events__parse(const char *str)
30 char *tok, *saveptr = NULL;
35 /* We need buffer that we know we can write to. */
36 buf = malloc(strlen(str) + 1);
42 tok = strtok_r((char *)buf, ",", &saveptr);
45 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
46 struct perf_mem_event *e = &perf_mem_events[j];
48 if (strstr(e->tag, tok))
49 e->record = found = true;
52 tok = strtok_r(NULL, ",", &saveptr);
60 pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
64 int perf_mem_events__init(void)
66 const char *mnt = sysfs__mount();
73 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
75 struct perf_mem_event *e = &perf_mem_events[j];
78 scnprintf(path, PATH_MAX, "%s/devices/cpu/events/%s",
82 e->supported = found = true;
85 return found ? 0 : -ENOENT;
88 static const char * const tlb_access[] = {
98 void perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
101 u64 m = PERF_MEM_TLB_NA;
104 sz -= 1; /* -1 for null termination */
108 m = mem_info->data_src.mem_dtlb;
110 hit = m & PERF_MEM_TLB_HIT;
111 miss = m & PERF_MEM_TLB_MISS;
113 /* already taken care of */
114 m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
116 for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
123 strncat(out, tlb_access[i], sz - l);
124 l += strlen(tlb_access[i]);
129 strncat(out, " hit", sz - l);
131 strncat(out, " miss", sz - l);
134 static const char * const mem_lvl[] = {
143 "Remote RAM (1 hop)",
144 "Remote RAM (2 hops)",
145 "Remote Cache (1 hop)",
146 "Remote Cache (2 hops)",
151 void perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
154 u64 m = PERF_MEM_LVL_NA;
158 m = mem_info->data_src.mem_lvl;
160 sz -= 1; /* -1 for null termination */
163 hit = m & PERF_MEM_LVL_HIT;
164 miss = m & PERF_MEM_LVL_MISS;
166 /* already taken care of */
167 m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
169 for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
176 strncat(out, mem_lvl[i], sz - l);
177 l += strlen(mem_lvl[i]);
182 strncat(out, " hit", sz - l);
184 strncat(out, " miss", sz - l);
187 static const char * const snoop_access[] = {
195 void perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
198 u64 m = PERF_MEM_SNOOP_NA;
200 sz -= 1; /* -1 for null termination */
204 m = mem_info->data_src.mem_snoop;
206 for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
213 strncat(out, snoop_access[i], sz - l);
214 l += strlen(snoop_access[i]);