Commit | Line | Data |
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ce1e22b0 JO |
1 | #include <stddef.h> |
2 | #include <stdlib.h> | |
3 | #include <string.h> | |
4 | #include <errno.h> | |
54fbad54 JO |
5 | #include <sys/types.h> |
6 | #include <sys/stat.h> | |
7 | #include <unistd.h> | |
8 | #include <api/fs/fs.h> | |
acbe613e | 9 | #include "mem-events.h" |
ce1e22b0 | 10 | #include "debug.h" |
0c877d75 | 11 | #include "symbol.h" |
acbe613e | 12 | |
54fbad54 | 13 | #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s } |
acbe613e JO |
14 | |
15 | struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = { | |
54fbad54 JO |
16 | E("ldlat-loads", "cpu/mem-loads,ldlat=30/P", "mem-loads"), |
17 | E("ldlat-stores", "cpu/mem-stores/P", "mem-stores"), | |
acbe613e | 18 | }; |
54fbad54 | 19 | #undef E |
acbe613e JO |
20 | |
21 | #undef E | |
ce1e22b0 | 22 | |
2ba7ac58 JO |
23 | char *perf_mem_events__name(int i) |
24 | { | |
25 | return (char *)perf_mem_events[i].name; | |
26 | } | |
27 | ||
ce1e22b0 JO |
28 | int perf_mem_events__parse(const char *str) |
29 | { | |
30 | char *tok, *saveptr = NULL; | |
31 | bool found = false; | |
32 | char *buf; | |
33 | int j; | |
34 | ||
35 | /* We need buffer that we know we can write to. */ | |
36 | buf = malloc(strlen(str) + 1); | |
37 | if (!buf) | |
38 | return -ENOMEM; | |
39 | ||
40 | strcpy(buf, str); | |
41 | ||
42 | tok = strtok_r((char *)buf, ",", &saveptr); | |
43 | ||
44 | while (tok) { | |
45 | for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { | |
46 | struct perf_mem_event *e = &perf_mem_events[j]; | |
47 | ||
48 | if (strstr(e->tag, tok)) | |
49 | e->record = found = true; | |
50 | } | |
51 | ||
52 | tok = strtok_r(NULL, ",", &saveptr); | |
53 | } | |
54 | ||
55 | free(buf); | |
56 | ||
57 | if (found) | |
58 | return 0; | |
59 | ||
60 | pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str); | |
61 | return -1; | |
62 | } | |
54fbad54 JO |
63 | |
64 | int perf_mem_events__init(void) | |
65 | { | |
66 | const char *mnt = sysfs__mount(); | |
67 | bool found = false; | |
68 | int j; | |
69 | ||
70 | if (!mnt) | |
71 | return -ENOENT; | |
72 | ||
73 | for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { | |
74 | char path[PATH_MAX]; | |
75 | struct perf_mem_event *e = &perf_mem_events[j]; | |
76 | struct stat st; | |
77 | ||
78 | scnprintf(path, PATH_MAX, "%s/devices/cpu/events/%s", | |
79 | mnt, e->sysfs_name); | |
80 | ||
81 | if (!stat(path, &st)) | |
82 | e->supported = found = true; | |
83 | } | |
84 | ||
85 | return found ? 0 : -ENOENT; | |
86 | } | |
0c877d75 JO |
87 | |
88 | static const char * const tlb_access[] = { | |
89 | "N/A", | |
90 | "HIT", | |
91 | "MISS", | |
92 | "L1", | |
93 | "L2", | |
94 | "Walker", | |
95 | "Fault", | |
96 | }; | |
97 | ||
b1a5fbea | 98 | int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info) |
0c877d75 JO |
99 | { |
100 | size_t l = 0, i; | |
101 | u64 m = PERF_MEM_TLB_NA; | |
102 | u64 hit, miss; | |
103 | ||
104 | sz -= 1; /* -1 for null termination */ | |
105 | out[0] = '\0'; | |
106 | ||
107 | if (mem_info) | |
108 | m = mem_info->data_src.mem_dtlb; | |
109 | ||
110 | hit = m & PERF_MEM_TLB_HIT; | |
111 | miss = m & PERF_MEM_TLB_MISS; | |
112 | ||
113 | /* already taken care of */ | |
114 | m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS); | |
115 | ||
116 | for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) { | |
117 | if (!(m & 0x1)) | |
118 | continue; | |
119 | if (l) { | |
120 | strcat(out, " or "); | |
121 | l += 4; | |
122 | } | |
b1a5fbea | 123 | l += scnprintf(out + l, sz - l, tlb_access[i]); |
0c877d75 JO |
124 | } |
125 | if (*out == '\0') | |
b1a5fbea | 126 | l += scnprintf(out, sz - l, "N/A"); |
0c877d75 | 127 | if (hit) |
b1a5fbea | 128 | l += scnprintf(out + l, sz - l, " hit"); |
0c877d75 | 129 | if (miss) |
b1a5fbea JO |
130 | l += scnprintf(out + l, sz - l, " miss"); |
131 | ||
132 | return l; | |
0c877d75 | 133 | } |
071e9a1e JO |
134 | |
135 | static const char * const mem_lvl[] = { | |
136 | "N/A", | |
137 | "HIT", | |
138 | "MISS", | |
139 | "L1", | |
140 | "LFB", | |
141 | "L2", | |
142 | "L3", | |
143 | "Local RAM", | |
144 | "Remote RAM (1 hop)", | |
145 | "Remote RAM (2 hops)", | |
146 | "Remote Cache (1 hop)", | |
147 | "Remote Cache (2 hops)", | |
148 | "I/O", | |
149 | "Uncached", | |
150 | }; | |
151 | ||
96907563 | 152 | int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info) |
071e9a1e JO |
153 | { |
154 | size_t i, l = 0; | |
155 | u64 m = PERF_MEM_LVL_NA; | |
156 | u64 hit, miss; | |
157 | ||
158 | if (mem_info) | |
159 | m = mem_info->data_src.mem_lvl; | |
160 | ||
161 | sz -= 1; /* -1 for null termination */ | |
162 | out[0] = '\0'; | |
163 | ||
164 | hit = m & PERF_MEM_LVL_HIT; | |
165 | miss = m & PERF_MEM_LVL_MISS; | |
166 | ||
167 | /* already taken care of */ | |
168 | m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS); | |
169 | ||
170 | for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) { | |
171 | if (!(m & 0x1)) | |
172 | continue; | |
173 | if (l) { | |
174 | strcat(out, " or "); | |
175 | l += 4; | |
176 | } | |
96907563 | 177 | l += scnprintf(out + l, sz - l, mem_lvl[i]); |
071e9a1e JO |
178 | } |
179 | if (*out == '\0') | |
96907563 | 180 | l += scnprintf(out, sz - l, "N/A"); |
071e9a1e | 181 | if (hit) |
96907563 | 182 | l += scnprintf(out + l, sz - l, " hit"); |
071e9a1e | 183 | if (miss) |
96907563 JO |
184 | l += scnprintf(out + l, sz - l, " miss"); |
185 | ||
186 | return l; | |
071e9a1e | 187 | } |
2c07af13 JO |
188 | |
189 | static const char * const snoop_access[] = { | |
190 | "N/A", | |
191 | "None", | |
192 | "Miss", | |
193 | "Hit", | |
194 | "HitM", | |
195 | }; | |
196 | ||
149d7507 | 197 | int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info) |
2c07af13 JO |
198 | { |
199 | size_t i, l = 0; | |
200 | u64 m = PERF_MEM_SNOOP_NA; | |
201 | ||
202 | sz -= 1; /* -1 for null termination */ | |
203 | out[0] = '\0'; | |
204 | ||
205 | if (mem_info) | |
206 | m = mem_info->data_src.mem_snoop; | |
207 | ||
208 | for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) { | |
209 | if (!(m & 0x1)) | |
210 | continue; | |
211 | if (l) { | |
212 | strcat(out, " or "); | |
213 | l += 4; | |
214 | } | |
149d7507 | 215 | l += scnprintf(out + l, sz - l, snoop_access[i]); |
2c07af13 JO |
216 | } |
217 | ||
218 | if (*out == '\0') | |
149d7507 JO |
219 | l += scnprintf(out, sz - l, "N/A"); |
220 | ||
221 | return l; | |
2c07af13 | 222 | } |
69a77275 | 223 | |
8b0819c8 | 224 | int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info) |
69a77275 JO |
225 | { |
226 | u64 mask = PERF_MEM_LOCK_NA; | |
8b0819c8 | 227 | int l; |
69a77275 JO |
228 | |
229 | if (mem_info) | |
230 | mask = mem_info->data_src.mem_lock; | |
231 | ||
232 | if (mask & PERF_MEM_LOCK_NA) | |
8b0819c8 | 233 | l = scnprintf(out, sz, "N/A"); |
69a77275 | 234 | else if (mask & PERF_MEM_LOCK_LOCKED) |
8b0819c8 | 235 | l = scnprintf(out, sz, "Yes"); |
69a77275 | 236 | else |
8b0819c8 JO |
237 | l = scnprintf(out, sz, "No"); |
238 | ||
239 | return l; | |
69a77275 | 240 | } |
c19ac912 JO |
241 | |
242 | int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info) | |
243 | { | |
244 | int i = 0; | |
245 | ||
246 | i += perf_mem__lvl_scnprintf(out, sz, mem_info); | |
247 | i += scnprintf(out + i, sz - i, "|SNP "); | |
248 | i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info); | |
249 | i += scnprintf(out + i, sz - i, "|TLB "); | |
250 | i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info); | |
251 | i += scnprintf(out + i, sz - i, "|LCK "); | |
252 | i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info); | |
253 | ||
254 | return i; | |
255 | } |