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      1 /*
      2  * Copyright (c) 2012, The Linux Foundation. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  * *    * Redistributions of source code must retain the above copyright
      8  *       notice, this list of conditions and the following disclaimer.
      9  *     * Redistributions in binary form must reproduce the above
     10  *       copyright notice, this list of conditions and the following
     11  *       disclaimer in the documentation and/or other materials provided
     12  *       with the distribution.
     13  *     * Neither the name of The Linux Foundation nor the names of its
     14  *       contributors may be used to endorse or promote products derived
     15  *       from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <cutils/properties.h>
     31 
     32 extern int launch_handle;
     33 extern int launch_mode;
     34 extern int sustained_performance_mode;
     35 extern int vr_mode;
     36 
     37 int sysfs_read(char *path, char *s, int num_bytes);
     38 int sysfs_write(char *path, char *s);
     39 int sysfs_get_size_in_bytes(char *path);
     40 int get_scaling_governor(char governor[], int size);
     41 int get_scaling_governor_check_cores(char governor[], int size,int core_num);
     42 
     43 void vote_ondemand_io_busy_off();
     44 void unvote_ondemand_io_busy_off();
     45 void vote_ondemand_sdf_low();
     46 void unvote_ondemand_sdf_low();
     47 void perform_hint_action(int hint_id, int resource_values[],
     48     int num_resources);
     49 void undo_hint_action(int hint_id);
     50 void release_request(int lock_handle);
     51 int interaction_with_handle(int lock_handle, int duration, int num_args, int opt_list[]);
     52