LXR dpdk/examples/vm_power_manager/channel

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2010-2014 Intel Corporation
   3 */
   4
   5#ifndef CHANNEL_MONITOR_H_
   6#define CHANNEL_MONITOR_H_
   7
   8#include <rte_power.h>
   9
  10#include "channel_manager.h"
  11
  12struct core_share {
  13        unsigned int pcpu;
  14        /*
  15         * 1 CORE SHARE
  16         * 0 NOT SHARED
  17         */
  18        int status;
  19};
  20
  21struct policy {
  22        struct rte_power_channel_packet pkt;
  23        uint32_t pfid[RTE_POWER_MAX_VFS];
  24        uint32_t port[RTE_POWER_MAX_VFS];
  25        unsigned int enabled;
  26        struct core_share core_share[RTE_POWER_MAX_VCPU_PER_VM];
  27};
  28
  29#ifdef __cplusplus
  30extern "C" {
  31#endif
  32
  33/**
  34 * Setup the Channel Monitor resources required to initialize epoll.
  35 * Must be called first before calling other functions.
  36 *
  37 * @return
  38 *  - 0 on success.
  39 *  - Negative on error.
  40 */
  41int channel_monitor_init(void);
  42
  43/**
  44 * Run the channel monitor, loops forever on on epoll_wait.
  45 *
  46 *
  47 * @return
  48 *  None
  49 */
  50void run_channel_monitor(void);
  51
  52/**
  53 * Exit the Channel Monitor, exiting the epoll_wait loop and events processing.
  54 *
  55 * @return
  56 *  - 0 on success.
  57 *  - Negative on error.
  58 */
  59void channel_monitor_exit(void);
  60
  61/**
  62 * Add an open channel to monitor via epoll. A pointer to struct channel_info
  63 * will be registered with epoll for event processing.
  64 * It is thread-safe.
  65 *
  66 * @param chan_info
  67 *  Pointer to struct channel_info pointer.
  68 *
  69 * @return
  70 *  - 0 on success.
  71 *  - Negative on error.
  72 */
  73int add_channel_to_monitor(struct channel_info **chan_info);
  74
  75/**
  76 * Remove a previously added channel from epoll control.
  77 *
  78 * @param chan_info
  79 *  Pointer to struct channel_info.
  80 *
  81 * @return
  82 *  - 0 on success.
  83 *  - Negative on error.
  84 */
  85int remove_channel_from_monitor(struct channel_info *chan_info);
  86
  87#ifdef __cplusplus
  88}
  89#endif
  90
  91
  92#endif /* CHANNEL_MONITOR_H_ */
  93