1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
15 #include <sys/sysinfo.h>
16 #include <sys/types.h>
19 #include <rte_power.h>
20 #include <rte_spinlock.h>
22 #include "channel_manager.h"
23 #include "power_manager.h"
24 #include "oob_monitor.h"
26 #define POWER_SCALE_CORE(DIRECTION, core_num , ret) do { \
27 if (core_num >= ci.core_count) \
29 if (!(ci.cd[core_num].global_enabled_cpus)) \
31 rte_spinlock_lock(&global_core_freq_info[core_num].power_sl); \
32 ret = rte_power_freq_##DIRECTION(core_num); \
33 rte_spinlock_unlock(&global_core_freq_info[core_num].power_sl); \
37 rte_spinlock_t power_sl
;
38 uint32_t freqs
[RTE_MAX_LCORE_FREQS
];
40 } __rte_cache_aligned
;
42 static struct freq_info global_core_freq_info
[RTE_MAX_LCORE
];
46 #define SYSFS_CPU_PATH "/sys/devices/system/cpu/cpu%u/topology/core_id"
62 ci
->core_count
= get_nprocs_conf();
63 ci
->branch_ratio_threshold
= BRANCH_RATIO_THRESHOLD
;
64 ci
->cd
= malloc(ci
->core_count
* sizeof(struct core_details
));
66 RTE_LOG(ERR
, POWER_MANAGER
, "Failed to allocate memory for core info.");
69 for (i
= 0; i
< ci
->core_count
; i
++) {
70 ci
->cd
[i
].global_enabled_cpus
= 1;
71 ci
->cd
[i
].oob_enabled
= 0;
74 printf("%d cores in system\n", ci
->core_count
);
79 power_manager_init(void)
81 unsigned int i
, num_cpus
= 0, num_freqs
= 0;
84 unsigned int max_core_num
;
86 rte_power_set_env(PM_ENV_NOT_SET
);
90 RTE_LOG(ERR
, POWER_MANAGER
,
91 "Failed to get core info!\n");
95 if (ci
->core_count
> RTE_MAX_LCORE
)
96 max_core_num
= RTE_MAX_LCORE
;
98 max_core_num
= ci
->core_count
;
100 for (i
= 0; i
< max_core_num
; i
++) {
101 if (ci
->cd
[i
].global_enabled_cpus
) {
102 if (rte_power_init(i
) < 0)
103 RTE_LOG(ERR
, POWER_MANAGER
,
104 "Unable to initialize power manager "
107 num_freqs
= rte_power_freqs(i
,
108 global_core_freq_info
[i
].freqs
,
109 RTE_MAX_LCORE_FREQS
);
110 if (num_freqs
== 0) {
111 RTE_LOG(ERR
, POWER_MANAGER
,
112 "Unable to get frequency list for core %u\n",
114 ci
->cd
[i
].oob_enabled
= 0;
117 global_core_freq_info
[i
].num_freqs
= num_freqs
;
119 rte_spinlock_init(&global_core_freq_info
[i
].power_sl
);
121 if (ci
->cd
[i
].oob_enabled
)
122 add_core_to_monitor(i
);
124 RTE_LOG(INFO
, POWER_MANAGER
, "Managing %u cores out of %u available host cores\n",
125 num_cpus
, ci
->core_count
);
131 power_manager_get_current_frequency(unsigned core_num
)
133 uint32_t freq
, index
;
135 if (core_num
>= RTE_MAX_LCORE
) {
136 RTE_LOG(ERR
, POWER_MANAGER
, "Core(%u) is out of range 0...%d\n",
137 core_num
, RTE_MAX_LCORE
-1);
140 if (!(ci
.cd
[core_num
].global_enabled_cpus
))
143 rte_spinlock_lock(&global_core_freq_info
[core_num
].power_sl
);
144 index
= rte_power_get_freq(core_num
);
145 rte_spinlock_unlock(&global_core_freq_info
[core_num
].power_sl
);
146 if (index
>= RTE_MAX_LCORE_FREQS
)
149 freq
= global_core_freq_info
[core_num
].freqs
[index
];
155 power_manager_exit(void)
159 struct core_info
*ci
;
160 unsigned int max_core_num
;
162 ci
= get_core_info();
164 RTE_LOG(ERR
, POWER_MANAGER
,
165 "Failed to get core info!\n");
169 if (ci
->core_count
> RTE_MAX_LCORE
)
170 max_core_num
= RTE_MAX_LCORE
;
172 max_core_num
= ci
->core_count
;
174 for (i
= 0; i
< max_core_num
; i
++) {
175 if (ci
->cd
[i
].global_enabled_cpus
) {
176 if (rte_power_exit(i
) < 0) {
177 RTE_LOG(ERR
, POWER_MANAGER
, "Unable to shutdown power manager "
181 ci
->cd
[i
].global_enabled_cpus
= 0;
183 remove_core_from_monitor(i
);
189 power_manager_scale_core_up(unsigned core_num
)
193 POWER_SCALE_CORE(up
, core_num
, ret
);
198 power_manager_scale_core_down(unsigned core_num
)
202 POWER_SCALE_CORE(down
, core_num
, ret
);
207 power_manager_scale_core_min(unsigned core_num
)
211 POWER_SCALE_CORE(min
, core_num
, ret
);
216 power_manager_scale_core_max(unsigned core_num
)
220 POWER_SCALE_CORE(max
, core_num
, ret
);
225 power_manager_enable_turbo_core(unsigned int core_num
)
229 POWER_SCALE_CORE(enable_turbo
, core_num
, ret
);
234 power_manager_disable_turbo_core(unsigned int core_num
)
238 POWER_SCALE_CORE(disable_turbo
, core_num
, ret
);
243 power_manager_scale_core_med(unsigned int core_num
)
246 struct core_info
*ci
;
248 ci
= get_core_info();
249 if (core_num
>= RTE_MAX_LCORE
)
251 if (!(ci
->cd
[core_num
].global_enabled_cpus
))
253 rte_spinlock_lock(&global_core_freq_info
[core_num
].power_sl
);
254 ret
= rte_power_set_freq(core_num
,
255 global_core_freq_info
[core_num
].num_freqs
/ 2);
256 rte_spinlock_unlock(&global_core_freq_info
[core_num
].power_sl
);