1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* Copyright (c) 2016-2018, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <odp_sysinfo_internal.h>
#include "cpu_flags.h"
#include <string.h>
int _odp_cpuinfo_parser(FILE *file, system_info_t *sysinfo)
{
char str[1024];
char *pos, *pos_end;
double ghz = 0.0;
double mhz = 0.0;
uint64_t hz;
int id = 0;
bool freq_set = false;
sysinfo->cpu_arch = ODP_CPU_ARCH_X86;
sysinfo->cpu_isa_sw.x86 = ODP_CPU_ARCH_X86_UNKNOWN;
sysinfo->cpu_isa_hw.x86 = ODP_CPU_ARCH_X86_UNKNOWN;
#if defined __x86_64 || defined __x86_64__
sysinfo->cpu_isa_sw.x86 = ODP_CPU_ARCH_X86_64;
#elif defined __i686 || defined __i686__
sysinfo->cpu_isa_sw.x86 = ODP_CPU_ARCH_X86_I686;
#endif
strcpy(sysinfo->cpu_arch_str, "x86");
while (fgets(str, sizeof(str), file) != NULL && id < CONFIG_NUM_CPU_IDS) {
pos = strstr(str, "model name");
if (pos) {
freq_set = false;
/* Copy model name between : and @ characters */
pos = strchr(str, ':');
pos_end = strchr(str, '@');
if (pos == NULL)
continue;
if (pos_end != NULL)
*(pos_end - 1) = '\0';
strncpy(sysinfo->model_str[id], pos + 2,
MODEL_STR_SIZE - 1);
if (sysinfo->cpu_hz_max[id]) {
freq_set = true;
id++;
continue;
}
/* max frequency needs to be set */
if (pos_end != NULL &&
sscanf(pos_end, "@ %lfGHz", &ghz) == 1) {
hz = (uint64_t)(ghz * 1000000000.0);
sysinfo->cpu_hz_max[id++] = hz;
freq_set = true;
}
} else if (!freq_set &&
strstr(str, "bogomips") != NULL) {
pos = strchr(str, ':');
if (pos == NULL)
continue;
if (sscanf(pos + 2, "%lf", &mhz) == 1) {
/* On typical x86 BogoMIPS is freq * 2 */
hz = (uint64_t)(mhz * 1000000.0 / 2);
sysinfo->cpu_hz_max[id++] = hz;
freq_set = true;
}
}
}
return 0;
}
void _odp_sys_info_print_arch(void)
{
_odp_cpu_flags_print_all();
}
uint64_t odp_cpu_arch_hz_current(int id)
{
char str[1024];
FILE *file;
int cpu;
char *pos;
double mhz = 0.0;
file = fopen("/proc/cpuinfo", "rt");
if (!file)
return 0;
/* find the correct processor instance */
while (fgets(str, sizeof(str), file) != NULL) {
pos = strstr(str, "processor");
if (pos) {
if (sscanf(pos, "processor : %d", &cpu) == 1)
if (cpu == id)
break;
}
}
/* extract the cpu current speed */
while (fgets(str, sizeof(str), file) != NULL) {
pos = strstr(str, "cpu MHz");
if (pos) {
if (sscanf(pos, "cpu MHz : %lf", &mhz) == 1)
break;
}
}
fclose(file);
if (mhz)
return (uint64_t)(mhz * 1000000.0);
return 0;
}
|
