kernel/sched/walt.h

   1 /*
   2  * Copyright (c) 2016, The Linux Foundation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 and
   6  * only version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef __WALT_H
  15 #define __WALT_H
  16
  17 #ifdef CONFIG_SCHED_WALT
  18
  19 void walt_update_task_ravg(struct task_struct *p, struct rq *rq, int event,
  20                 u64 wallclock, u64 irqtime);
  21 void walt_inc_cumulative_runnable_avg(struct rq *rq, struct task_struct *p);
  22 void walt_dec_cumulative_runnable_avg(struct rq *rq, struct task_struct *p);
  23
  24 void walt_fixup_busy_time(struct task_struct *p, int new_cpu);
  25 void walt_init_new_task_load(struct task_struct *p);
  26 void walt_mark_task_starting(struct task_struct *p);
  27 void walt_set_window_start(struct rq *rq, struct rq_flags *rf);
  28 void walt_migrate_sync_cpu(int cpu);
  29 u64 walt_ktime_clock(void);
  30 void walt_account_irqtime(int cpu, struct task_struct *curr, u64 delta,
  31                                   u64 wallclock);
  32
  33 u64 walt_irqload(int cpu);
  34 int walt_cpu_high_irqload(int cpu);
  35
  36 #else /* CONFIG_SCHED_WALT */
  37
  38 static inline void walt_update_task_ravg(struct task_struct *p, struct rq *rq,
  39                 int event, u64 wallclock, u64 irqtime) { }
  40 static inline void walt_inc_cumulative_runnable_avg(struct rq *rq, struct task_struct *p) { }
  41 static inline void walt_dec_cumulative_runnable_avg(struct rq *rq, struct task_struct *p) { }
  42 static inline void walt_fixup_busy_time(struct task_struct *p, int new_cpu) { }
  43 static inline void walt_init_new_task_load(struct task_struct *p) { }
  44 static inline void walt_mark_task_starting(struct task_struct *p) { }
  45 static inline void walt_set_window_start(struct rq *rq, struct rq_flags *rf) { }
  46 static inline void walt_migrate_sync_cpu(int cpu) { }
  47 static inline u64 walt_ktime_clock(void) { return 0; }
  48
  49 #define walt_cpu_high_irqload(cpu) false
  50
  51 #endif /* CONFIG_SCHED_WALT */
  52
  53 #if defined(CONFIG_CFS_BANDWIDTH) && defined(CONFIG_SCHED_WALT)
  54 void walt_inc_cfs_cumulative_runnable_avg(struct cfs_rq *rq,
  55                 struct task_struct *p);
  56 void walt_dec_cfs_cumulative_runnable_avg(struct cfs_rq *rq,
  57                 struct task_struct *p);
  58 #else
  59 static inline void walt_inc_cfs_cumulative_runnable_avg(struct cfs_rq *rq,
  60                 struct task_struct *p) { }
  61 static inline void walt_dec_cfs_cumulative_runnable_avg(struct cfs_rq *rq,
  62                 struct task_struct *p) { }
  63 #endif
  64
  65 extern bool walt_disabled;
  66
  67 #endif