Linux Kernel  3.7.1
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governor_performance.c
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1 /*
2  * linux/drivers/devfreq/governor_performance.c
3  *
4  * Copyright (C) 2011 Samsung Electronics
5  * MyungJoo Ham <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #include <linux/devfreq.h>
13 #include "governor.h"
14 
15 static int devfreq_performance_func(struct devfreq *df,
16  unsigned long *freq)
17 {
18  /*
19  * target callback should be able to get floor value as
20  * said in devfreq.h
21  */
22  if (!df->max_freq)
23  *freq = UINT_MAX;
24  else
25  *freq = df->max_freq;
26  return 0;
27 }
28 
29 static int performance_init(struct devfreq *devfreq)
30 {
31  return update_devfreq(devfreq);
32 }
33 
35  .name = "performance",
36  .init = performance_init,
37  .get_target_freq = devfreq_performance_func,
38  .no_central_polling = true,
39 };