Loading...
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | // SPDX-License-Identifier: GPL-2.0 #include <stdio.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "helpers/helpers.h" #include "helpers/sysfs.h" #include "cpufreq.h" #if defined(__i386__) || defined(__x86_64__) #include "cpupower_intern.h" #define MSR_AMD_HWCR 0xc0010015 int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active, int *states) { int ret; unsigned long long val; *support = *active = *states = 0; if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB) { *support = 1; /* AMD Family 0x17 does not utilize PCI D18F4 like prior * families and has no fixed discrete boost states but * has Hardware determined variable increments instead. */ if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB_MSR) { if (!read_msr(cpu, MSR_AMD_HWCR, &val)) { if (!(val & CPUPOWER_AMD_CPBDIS)) *active = 1; } } else { ret = amd_pci_get_num_boost_states(active, states); if (ret) return ret; } } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATE) { amd_pstate_boost_init(cpu, support, active); } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA) *support = *active = 1; return 0; } int cpupower_intel_get_perf_bias(unsigned int cpu) { char linebuf[MAX_LINE_LEN]; char path[SYSFS_PATH_MAX]; unsigned long val; char *endp; if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) return -1; snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/power/energy_perf_bias", cpu); if (cpupower_read_sysfs(path, linebuf, MAX_LINE_LEN) == 0) return -1; val = strtol(linebuf, &endp, 0); if (endp == linebuf || errno == ERANGE) return -1; return val; } int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) { char path[SYSFS_PATH_MAX]; char linebuf[3] = {}; if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) return -1; snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/power/energy_perf_bias", cpu); snprintf(linebuf, sizeof(linebuf), "%d", val); if (cpupower_write_sysfs(path, linebuf, 3) <= 0) return -1; return 0; } bool cpupower_amd_pstate_enabled(void) { char *driver = cpufreq_get_driver(0); bool ret = false; if (!driver) return ret; if (!strcmp(driver, "amd-pstate")) ret = true; cpufreq_put_driver(driver); return ret; } #endif /* #if defined(__i386__) || defined(__x86_64__) */ /* get_cpustate * * Gather the information of all online CPUs into bitmask struct */ void get_cpustate(void) { unsigned int cpu = 0; bitmask_clearall(online_cpus); bitmask_clearall(offline_cpus); for (cpu = bitmask_first(cpus_chosen); cpu <= bitmask_last(cpus_chosen); cpu++) { if (cpupower_is_cpu_online(cpu) == 1) bitmask_setbit(online_cpus, cpu); else bitmask_setbit(offline_cpus, cpu); continue; } } /* print_online_cpus * * Print the CPU numbers of all CPUs that are online currently */ void print_online_cpus(void) { int str_len = 0; char *online_cpus_str = NULL; str_len = online_cpus->size * 5; online_cpus_str = (void *)malloc(sizeof(char) * str_len); if (!bitmask_isallclear(online_cpus)) { bitmask_displaylist(online_cpus_str, str_len, online_cpus); printf(_("Following CPUs are online:\n%s\n"), online_cpus_str); } } /* print_offline_cpus * * Print the CPU numbers of all CPUs that are offline currently */ void print_offline_cpus(void) { int str_len = 0; char *offline_cpus_str = NULL; str_len = offline_cpus->size * 5; offline_cpus_str = (void *)malloc(sizeof(char) * str_len); if (!bitmask_isallclear(offline_cpus)) { bitmask_displaylist(offline_cpus_str, str_len, offline_cpus); printf(_("Following CPUs are offline:\n%s\n"), offline_cpus_str); printf(_("cpupower set operation was not performed on them\n")); } } /* * print_speed * * Print the exact CPU frequency with appropriate unit */ void print_speed(unsigned long speed, int no_rounding) { unsigned long tmp; if (no_rounding) { if (speed > 1000000) printf("%u.%06u GHz", ((unsigned int)speed / 1000000), ((unsigned int)speed % 1000000)); else if (speed > 1000) printf("%u.%03u MHz", ((unsigned int)speed / 1000), (unsigned int)(speed % 1000)); else printf("%lu kHz", speed); } else { if (speed > 1000000) { tmp = speed % 10000; if (tmp >= 5000) speed += 10000; printf("%u.%02u GHz", ((unsigned int)speed / 1000000), ((unsigned int)(speed % 1000000) / 10000)); } else if (speed > 100000) { tmp = speed % 1000; if (tmp >= 500) speed += 1000; printf("%u MHz", ((unsigned int)speed / 1000)); } else if (speed > 1000) { tmp = speed % 100; if (tmp >= 50) speed += 100; printf("%u.%01u MHz", ((unsigned int)speed / 1000), ((unsigned int)(speed % 1000) / 100)); } } } |