include/linux/cpuacct.h

   1 /* include/linux/cpuacct.h
   2  *
   3  * Copyright (C) 2010 Google, Inc.
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  */
  15
  16 #ifndef _CPUACCT_H_
  17 #define _CPUACCT_H_
  18
  19 #include <linux/cgroup.h>
  20
  21 #ifdef CONFIG_CGROUP_CPUACCT
  22
  23 /*
  24  * Platform specific CPU frequency hooks for cpuacct. These functions are
  25  * called from the scheduler.
  26  */
  27 struct cpuacct_charge_calls {
  28         /*
  29          * Platforms can take advantage of this data and use
  30          * per-cpu allocations if necessary.
  31          */
  32         void (*init) (void **cpuacct_data);
  33         void (*charge) (void *cpuacct_data,  u64 cputime, unsigned int cpu);
  34         void (*cpufreq_show) (void *cpuacct_data, struct cgroup_map_cb *cb);
  35         /* Returns power consumed in milliWatt seconds */
  36         u64 (*power_usage) (void *cpuacct_data);
  37 };
  38
  39 int cpuacct_charge_register(struct cpuacct_charge_calls *fn);
  40
  41 #endif /* CONFIG_CGROUP_CPUACCT */
  42
  43 #endif // _CPUACCT_H_