| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <unistd.h> |
| 3 | #include <stdio.h> |
| 4 | #include <errno.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <limits.h> |
| 7 | #include <string.h> |
| 8 | #include <ctype.h> |
| 9 | #include <getopt.h> |
| 10 | |
| 11 | #include <cpufreq.h> |
| 12 | #include <cpuidle.h> |
| 13 | |
| 14 | #include "helpers/helpers.h" |
| 15 | |
| 16 | static struct option info_opts[] = { |
| 17 | {"disable", required_argument, NULL, 'd'}, |
| 18 | {"enable", required_argument, NULL, 'e'}, |
| 19 | {"disable-by-latency", required_argument, NULL, 'D'}, |
| 20 | {"enable-all", no_argument, NULL, 'E'}, |
| 21 | { }, |
| 22 | }; |
| 23 | |
| 24 | |
| 25 | int cmd_idle_set(int argc, char **argv) |
| 26 | { |
| 27 | extern char *optarg; |
| 28 | extern int optind, opterr, optopt; |
| 29 | int ret = 0, cont = 1, param = 0, disabled; |
| 30 | unsigned long long latency = 0, state_latency; |
| 31 | unsigned int cpu = 0, idlestate = 0, idlestates = 0; |
| 32 | char *endptr; |
| 33 | |
| 34 | do { |
| 35 | ret = getopt_long(argc, argv, "d:e:ED:", info_opts, NULL); |
| 36 | if (ret == -1) |
| 37 | break; |
| 38 | switch (ret) { |
| 39 | case '?': |
| 40 | param = '?'; |
| 41 | cont = 0; |
| 42 | break; |
| 43 | case 'd': |
| 44 | if (param) { |
| 45 | param = -1; |
| 46 | cont = 0; |
| 47 | break; |
| 48 | } |
| 49 | param = ret; |
| 50 | idlestate = atoi(optarg); |
| 51 | break; |
| 52 | case 'e': |
| 53 | if (param) { |
| 54 | param = -1; |
| 55 | cont = 0; |
| 56 | break; |
| 57 | } |
| 58 | param = ret; |
| 59 | idlestate = atoi(optarg); |
| 60 | break; |
| 61 | case 'D': |
| 62 | if (param) { |
| 63 | param = -1; |
| 64 | cont = 0; |
| 65 | break; |
| 66 | } |
| 67 | param = ret; |
| 68 | latency = strtoull(optarg, &endptr, 10); |
| 69 | if (*endptr != '\0') { |
| 70 | printf(_("Bad latency value: %s\n"), optarg); |
| 71 | exit(EXIT_FAILURE); |
| 72 | } |
| 73 | break; |
| 74 | case 'E': |
| 75 | if (param) { |
| 76 | param = -1; |
| 77 | cont = 0; |
| 78 | break; |
| 79 | } |
| 80 | param = ret; |
| 81 | break; |
| 82 | case -1: |
| 83 | cont = 0; |
| 84 | break; |
| 85 | } |
| 86 | } while (cont); |
| 87 | |
| 88 | switch (param) { |
| 89 | case -1: |
| 90 | printf(_("You can't specify more than one " |
| 91 | "output-specific argument\n")); |
| 92 | exit(EXIT_FAILURE); |
| 93 | case '?': |
| 94 | printf(_("invalid or unknown argument\n")); |
| 95 | exit(EXIT_FAILURE); |
| 96 | } |
| 97 | |
| 98 | /* Default is: set all CPUs */ |
| 99 | if (bitmask_isallclear(cpus_chosen)) |
| 100 | bitmask_setall(cpus_chosen); |
| 101 | |
| 102 | for (cpu = bitmask_first(cpus_chosen); |
| 103 | cpu <= bitmask_last(cpus_chosen); cpu++) { |
| 104 | |
| 105 | if (!bitmask_isbitset(cpus_chosen, cpu)) |
| 106 | continue; |
| 107 | |
| 108 | if (cpupower_is_cpu_online(cpu) != 1) |
| 109 | continue; |
| 110 | |
| 111 | idlestates = cpuidle_state_count(cpu); |
| 112 | if (idlestates <= 0) |
| 113 | continue; |
| 114 | |
| 115 | switch (param) { |
| 116 | case 'd': |
| 117 | ret = cpuidle_state_disable(cpu, idlestate, 1); |
| 118 | if (ret == 0) |
| 119 | printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); |
| 120 | else if (ret == -1) |
| 121 | printf(_("Idlestate %u not available on CPU %u\n"), |
| 122 | idlestate, cpu); |
| 123 | else if (ret == -2) |
| 124 | printf(_("Idlestate disabling not supported by kernel\n")); |
| 125 | else |
| 126 | printf(_("Idlestate %u not disabled on CPU %u\n"), |
| 127 | idlestate, cpu); |
| 128 | break; |
| 129 | case 'e': |
| 130 | ret = cpuidle_state_disable(cpu, idlestate, 0); |
| 131 | if (ret == 0) |
| 132 | printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); |
| 133 | else if (ret == -1) |
| 134 | printf(_("Idlestate %u not available on CPU %u\n"), |
| 135 | idlestate, cpu); |
| 136 | else if (ret == -2) |
| 137 | printf(_("Idlestate enabling not supported by kernel\n")); |
| 138 | else |
| 139 | printf(_("Idlestate %u not enabled on CPU %u\n"), |
| 140 | idlestate, cpu); |
| 141 | break; |
| 142 | case 'D': |
| 143 | for (idlestate = 0; idlestate < idlestates; idlestate++) { |
| 144 | disabled = cpuidle_is_state_disabled |
| 145 | (cpu, idlestate); |
| 146 | state_latency = cpuidle_state_latency |
| 147 | (cpu, idlestate); |
| 148 | if (disabled == 1) { |
| 149 | if (latency > state_latency){ |
| 150 | ret = cpuidle_state_disable |
| 151 | (cpu, idlestate, 0); |
| 152 | if (ret == 0) |
| 153 | printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); |
| 154 | } |
| 155 | continue; |
| 156 | } |
| 157 | if (latency <= state_latency){ |
| 158 | ret = cpuidle_state_disable |
| 159 | (cpu, idlestate, 1); |
| 160 | if (ret == 0) |
| 161 | printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); |
| 162 | } |
| 163 | } |
| 164 | break; |
| 165 | case 'E': |
| 166 | for (idlestate = 0; idlestate < idlestates; idlestate++) { |
| 167 | disabled = cpuidle_is_state_disabled |
| 168 | (cpu, idlestate); |
| 169 | if (disabled == 1) { |
| 170 | ret = cpuidle_state_disable |
| 171 | (cpu, idlestate, 0); |
| 172 | if (ret == 0) |
| 173 | printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); |
| 174 | } |
| 175 | } |
| 176 | break; |
| 177 | default: |
| 178 | /* Not reachable with proper args checking */ |
| 179 | printf(_("Invalid or unknown argument\n")); |
| 180 | exit(EXIT_FAILURE); |
| 181 | break; |
| 182 | } |
| 183 | } |
| 184 | return EXIT_SUCCESS; |
| 185 | } |