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 | case 'e': |
45 | if (param) { |
46 | param = -1; |
47 | cont = 0; |
48 | break; |
49 | } |
50 | param = ret; |
51 | strtol(optarg, &endptr, 10); |
52 | if (*endptr != '\0') { |
53 | printf(_("Bad value: %s, Integer expected\n" ), optarg); |
54 | exit(EXIT_FAILURE); |
55 | } else { |
56 | idlestate = atoi(optarg); |
57 | } |
58 | break; |
59 | case 'D': |
60 | if (param) { |
61 | param = -1; |
62 | cont = 0; |
63 | break; |
64 | } |
65 | param = ret; |
66 | latency = strtoull(optarg, &endptr, 10); |
67 | if (*endptr != '\0') { |
68 | printf(_("Bad latency value: %s\n" ), optarg); |
69 | exit(EXIT_FAILURE); |
70 | } |
71 | break; |
72 | case 'E': |
73 | if (param) { |
74 | param = -1; |
75 | cont = 0; |
76 | break; |
77 | } |
78 | param = ret; |
79 | break; |
80 | case -1: |
81 | cont = 0; |
82 | break; |
83 | } |
84 | } while (cont); |
85 | |
86 | switch (param) { |
87 | case -1: |
88 | printf(_("You can't specify more than one " |
89 | "output-specific argument\n" )); |
90 | exit(EXIT_FAILURE); |
91 | case '?': |
92 | printf(_("invalid or unknown argument\n" )); |
93 | exit(EXIT_FAILURE); |
94 | } |
95 | |
96 | get_cpustate(); |
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 | |
185 | print_offline_cpus(); |
186 | return EXIT_SUCCESS; |
187 | } |
188 | |