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// 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;
}
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