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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | // SPDX-License-Identifier: GPL-2.0 #include <unistd.h> #include <stdio.h> #include <errno.h> #include <stdlib.h> #include <limits.h> #include <string.h> #include <ctype.h> #include <getopt.h> #include <cpufreq.h> #include <cpuidle.h> #include "helpers/helpers.h" static struct option info_opts[] = { {"disable", required_argument, NULL, 'd'}, {"enable", required_argument, NULL, 'e'}, {"disable-by-latency", required_argument, NULL, 'D'}, {"enable-all", no_argument, NULL, 'E'}, { }, }; int cmd_idle_set(int argc, char **argv) { extern char *optarg; extern int optind, opterr, optopt; int ret = 0, cont = 1, param = 0, disabled; unsigned long long latency = 0, state_latency; unsigned int cpu = 0, idlestate = 0, idlestates = 0; char *endptr; do { ret = getopt_long(argc, argv, "d:e:ED:", info_opts, NULL); if (ret == -1) break; switch (ret) { case '?': param = '?'; cont = 0; break; case 'd': if (param) { param = -1; cont = 0; break; } param = ret; idlestate = atoi(optarg); break; case 'e': if (param) { param = -1; cont = 0; break; } param = ret; idlestate = atoi(optarg); break; case 'D': if (param) { param = -1; cont = 0; break; } param = ret; latency = strtoull(optarg, &endptr, 10); if (*endptr != '\0') { printf(_("Bad latency value: %s\n"), optarg); exit(EXIT_FAILURE); } break; case 'E': if (param) { param = -1; cont = 0; break; } param = ret; break; case -1: cont = 0; break; } } while (cont); switch (param) { case -1: printf(_("You can't specify more than one " "output-specific argument\n")); exit(EXIT_FAILURE); case '?': printf(_("invalid or unknown argument\n")); exit(EXIT_FAILURE); } get_cpustate(); /* Default is: set all CPUs */ if (bitmask_isallclear(cpus_chosen)) bitmask_setall(cpus_chosen); for (cpu = bitmask_first(cpus_chosen); cpu <= bitmask_last(cpus_chosen); cpu++) { if (!bitmask_isbitset(cpus_chosen, cpu)) continue; if (cpupower_is_cpu_online(cpu) != 1) continue; idlestates = cpuidle_state_count(cpu); if (idlestates <= 0) continue; switch (param) { case 'd': ret = cpuidle_state_disable(cpu, idlestate, 1); if (ret == 0) printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); else if (ret == -1) printf(_("Idlestate %u not available on CPU %u\n"), idlestate, cpu); else if (ret == -2) printf(_("Idlestate disabling not supported by kernel\n")); else printf(_("Idlestate %u not disabled on CPU %u\n"), idlestate, cpu); break; case 'e': ret = cpuidle_state_disable(cpu, idlestate, 0); if (ret == 0) printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); else if (ret == -1) printf(_("Idlestate %u not available on CPU %u\n"), idlestate, cpu); else if (ret == -2) printf(_("Idlestate enabling not supported by kernel\n")); else printf(_("Idlestate %u not enabled on CPU %u\n"), idlestate, cpu); break; case 'D': for (idlestate = 0; idlestate < idlestates; idlestate++) { disabled = cpuidle_is_state_disabled (cpu, idlestate); state_latency = cpuidle_state_latency (cpu, idlestate); if (disabled == 1) { if (latency > state_latency){ ret = cpuidle_state_disable (cpu, idlestate, 0); if (ret == 0) printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); } continue; } if (latency <= state_latency){ ret = cpuidle_state_disable (cpu, idlestate, 1); if (ret == 0) printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); } } break; case 'E': for (idlestate = 0; idlestate < idlestates; idlestate++) { disabled = cpuidle_is_state_disabled (cpu, idlestate); if (disabled == 1) { ret = cpuidle_state_disable (cpu, idlestate, 0); if (ret == 0) printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); } } break; default: /* Not reachable with proper args checking */ printf(_("Invalid or unknown argument\n")); exit(EXIT_FAILURE); break; } } print_offline_cpus(); return EXIT_SUCCESS; } |