diff options
Diffstat (limited to 'tools/power/cpupower/utils/cpuidle-set.c')
| -rw-r--r-- | tools/power/cpupower/utils/cpuidle-set.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/cpuidle-set.c b/tools/power/cpupower/utils/cpuidle-set.c new file mode 100644 index 000000000..569f268f4 --- /dev/null +++ b/tools/power/cpupower/utils/cpuidle-set.c @@ -0,0 +1,185 @@ +// 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); + } + + /* 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; + } + } + return EXIT_SUCCESS; +} |