751227a08d
A previous change removed the limit of 64 cores by
moving away from 64-bit masks to char arrays. However
this left a buffer overrun issue, where the max channels
was defined as 64, and max cores was defined as 256. These
should all be consistently set to RTE_MAX_LCORE.
The #defines being removed are CHANNEL_CMDS_MAX_CPUS,
CHANNEL_CMDS_MAX_CHANNELS, POWER_MGR_MAX_CPUS, and
CHANNEL_CMDS_MAX_VM_CHANNELS, and are being replaced
with RTE_MAX_LCORE for consistency and simplicity.
Coverity issue: 337672, 337673, 337678
Fixes: fd73630e95c1 ("examples/power: change 64-bit masks to arrays")
Cc: stable@dpdk.org
Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
246 lines
5.0 KiB
C
246 lines
5.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef POWER_MANAGER_H_
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#define POWER_MANAGER_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct core_details {
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uint64_t last_branches;
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uint64_t last_branch_misses;
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uint16_t global_enabled_cpus;
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uint16_t oob_enabled;
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int msr_fd;
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};
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struct core_info {
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uint16_t core_count;
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struct core_details *cd;
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float branch_ratio_threshold;
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};
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#define BRANCH_RATIO_THRESHOLD 0.1
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struct core_info *
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get_core_info(void);
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int
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core_info_init(void);
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#define RTE_LOGTYPE_POWER_MANAGER RTE_LOGTYPE_USER1
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/**
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* Initialize power management.
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* Initializes resources and verifies the number of CPUs on the system.
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* Wraps librte_power int rte_power_init(unsigned lcore_id);
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*
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* @return
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* - 0 on success.
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* - Negative on error.
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*/
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int power_manager_init(void);
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/**
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* Exit power management. Must be called prior to exiting the application.
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*
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* @return
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* - 0 on success.
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* - Negative on error.
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*/
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int power_manager_exit(void);
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/**
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* Scale up the frequency of the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_scale_mask_up(uint64_t core_mask);
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/**
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* Scale down the frequency of the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_scale_mask_down(uint64_t core_mask);
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/**
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* Scale to the minimum frequency of the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_scale_mask_min(uint64_t core_mask);
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/**
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* Scale to the maximum frequency of the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_scale_mask_max(uint64_t core_mask);
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/**
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* Enable Turbo Boost on the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_enable_turbo_mask(uint64_t core_mask);
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/**
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* Disable Turbo Boost on the cores specified in core_mask.
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* It is thread-safe.
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*
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* @param core_mask
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* The uint64_t bit-mask of cores to change frequency.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_disable_turbo_mask(uint64_t core_mask);
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/**
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* Scale up frequency for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to change frequency
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_scale_core_up(unsigned core_num);
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/**
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* Scale down frequency for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to change frequency
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*
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* @return
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* - 1 on success.
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* - 0 if frequency not changed.
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* - Negative on error.
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*/
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int power_manager_scale_core_down(unsigned core_num);
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/**
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* Scale to minimum frequency for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to change frequency
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*
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* @return
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* - 1 on success.
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* - 0 if frequency not changed.
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* - Negative on error.
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*/
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int power_manager_scale_core_min(unsigned core_num);
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/**
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* Scale to maximum frequency for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to change frequency
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*
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* @return
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* - 1 on success.
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* - 0 if frequency not changed.
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* - Negative on error.
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*/
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int power_manager_scale_core_max(unsigned core_num);
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/**
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* Enable Turbo Boost for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to boost
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_enable_turbo_core(unsigned int core_num);
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/**
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* Disable Turbo Boost for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to boost
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_manager_disable_turbo_core(unsigned int core_num);
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/**
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* Get the current freuency of the core specified by core_num
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*
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* @param core_num
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* The core number to get the current frequency
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*
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* @return
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* - 0 on error
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* - >0 for current frequency.
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*/
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uint32_t power_manager_get_current_frequency(unsigned core_num);
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/**
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* Scale to medium frequency for the core specified by core_num.
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* It is thread-safe.
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*
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* @param core_num
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* The core number to change frequency
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*
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* @return
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* - 1 on success.
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* - 0 if frequency not changed.
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* - Negative on error.
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*/
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int power_manager_scale_core_med(unsigned int core_num);
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#ifdef __cplusplus
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}
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#endif
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#endif /* POWER_MANAGER_H_ */
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