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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 | // SPDX-License-Identifier: GPL-2.0 #include <stdio.h> #include <errno.h> #include <stdlib.h> #include "helpers/helpers.h" #include "helpers/sysfs.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) { struct cpupower_cpu_info cpu_info; int ret; unsigned long long val; *support = *active = *states = 0; ret = get_cpu_info(&cpu_info); if (ret) return ret; if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CBP) { *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 (cpu_info.family == 0x17 || cpu_info.family == 0x18) { 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_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; } #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")); } } |