1 // SPDX-License-Identifier: GPL-2.0
2 #include "util/pmu.h"
3 #include "util/env.h"
4 #include "map_symbol.h"
5 #include "mem-events.h"
6 #include "linux/string.h"
7
8 static char mem_loads_name[100];
9 static bool mem_loads_name__init;
10 static char mem_stores_name[100];
11
12 #define MEM_LOADS_AUX 0x8203
13 #define MEM_LOADS_AUX_NAME "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P"
14
15 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
16
17 static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
18 E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "%s/events/mem-loads"),
19 E("ldlat-stores", "%s/mem-stores/P", "%s/events/mem-stores"),
20 E(NULL, NULL, NULL),
21 };
22
23 static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
24 E(NULL, NULL, NULL),
25 E(NULL, NULL, NULL),
26 E("mem-ldst", "ibs_op//", "ibs_op"),
27 };
28
perf_mem_is_amd_cpu(void)29 static int perf_mem_is_amd_cpu(void)
30 {
31 struct perf_env env = { .total_mem = 0, };
32
33 perf_env__cpuid(&env);
34 if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD"))
35 return 1;
36 return -1;
37 }
38
perf_mem_events__ptr(int i)39 struct perf_mem_event *perf_mem_events__ptr(int i)
40 {
41 /* 0: Uninitialized, 1: Yes, -1: No */
42 static int is_amd;
43
44 if (i >= PERF_MEM_EVENTS__MAX)
45 return NULL;
46
47 if (!is_amd)
48 is_amd = perf_mem_is_amd_cpu();
49
50 if (is_amd == 1)
51 return &perf_mem_events_amd[i];
52
53 return &perf_mem_events_intel[i];
54 }
55
is_mem_loads_aux_event(struct evsel * leader)56 bool is_mem_loads_aux_event(struct evsel *leader)
57 {
58 if (perf_pmu__find("cpu")) {
59 if (!pmu_have_event("cpu", "mem-loads-aux"))
60 return false;
61 } else if (perf_pmu__find("cpu_core")) {
62 if (!pmu_have_event("cpu_core", "mem-loads-aux"))
63 return false;
64 }
65
66 return leader->core.attr.config == MEM_LOADS_AUX;
67 }
68
perf_mem_events__name(int i,char * pmu_name)69 char *perf_mem_events__name(int i, char *pmu_name)
70 {
71 struct perf_mem_event *e = perf_mem_events__ptr(i);
72
73 if (!e)
74 return NULL;
75
76 if (i == PERF_MEM_EVENTS__LOAD) {
77 if (mem_loads_name__init && !pmu_name)
78 return mem_loads_name;
79
80 if (!pmu_name) {
81 mem_loads_name__init = true;
82 pmu_name = (char *)"cpu";
83 }
84
85 if (pmu_have_event(pmu_name, "mem-loads-aux")) {
86 scnprintf(mem_loads_name, sizeof(mem_loads_name),
87 MEM_LOADS_AUX_NAME, pmu_name, pmu_name,
88 perf_mem_events__loads_ldlat);
89 } else {
90 scnprintf(mem_loads_name, sizeof(mem_loads_name),
91 e->name, pmu_name,
92 perf_mem_events__loads_ldlat);
93 }
94 return mem_loads_name;
95 }
96
97 if (i == PERF_MEM_EVENTS__STORE) {
98 if (!pmu_name)
99 pmu_name = (char *)"cpu";
100
101 scnprintf(mem_stores_name, sizeof(mem_stores_name),
102 e->name, pmu_name);
103 return mem_stores_name;
104 }
105
106 return (char *)e->name;
107 }
108