LCOV - code coverage report
Current view: top level - arch/arm/include/asm - bL_switcher.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2014-02-18 Functions: 0 0 -
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * arch/arm/include/asm/bL_switcher.h
       3                 :            :  *
       4                 :            :  * Created by:  Nicolas Pitre, April 2012
       5                 :            :  * Copyright:   (C) 2012-2013  Linaro Limited
       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                 :            : #ifndef ASM_BL_SWITCHER_H
      13                 :            : #define ASM_BL_SWITCHER_H
      14                 :            : 
      15                 :            : #include <linux/compiler.h>
      16                 :            : #include <linux/types.h>
      17                 :            : 
      18                 :            : typedef void (*bL_switch_completion_handler)(void *cookie);
      19                 :            : 
      20                 :            : int bL_switch_request_cb(unsigned int cpu, unsigned int new_cluster_id,
      21                 :            :                          bL_switch_completion_handler completer,
      22                 :            :                          void *completer_cookie);
      23                 :            : static inline int bL_switch_request(unsigned int cpu, unsigned int new_cluster_id)
      24                 :            : {
      25                 :       4878 :         return bL_switch_request_cb(cpu, new_cluster_id, NULL, NULL);
      26                 :            : }
      27                 :            : 
      28                 :            : /*
      29                 :            :  * Register here to be notified about runtime enabling/disabling of
      30                 :            :  * the switcher.
      31                 :            :  *
      32                 :            :  * The notifier chain is called with the switcher activation lock held:
      33                 :            :  * the switcher will not be enabled or disabled during callbacks.
      34                 :            :  * Callbacks must not call bL_switcher_{get,put}_enabled().
      35                 :            :  */
      36                 :            : #define BL_NOTIFY_PRE_ENABLE    0
      37                 :            : #define BL_NOTIFY_POST_ENABLE   1
      38                 :            : #define BL_NOTIFY_PRE_DISABLE   2
      39                 :            : #define BL_NOTIFY_POST_DISABLE  3
      40                 :            : 
      41                 :            : #ifdef CONFIG_BL_SWITCHER
      42                 :            : 
      43                 :            : int bL_switcher_register_notifier(struct notifier_block *nb);
      44                 :            : int bL_switcher_unregister_notifier(struct notifier_block *nb);
      45                 :            : 
      46                 :            : /*
      47                 :            :  * Use these functions to temporarily prevent enabling/disabling of
      48                 :            :  * the switcher.
      49                 :            :  * bL_switcher_get_enabled() returns true if the switcher is currently
      50                 :            :  * enabled.  Each call to bL_switcher_get_enabled() must be followed
      51                 :            :  * by a call to bL_switcher_put_enabled().  These functions are not
      52                 :            :  * recursive.
      53                 :            :  */
      54                 :            : bool bL_switcher_get_enabled(void);
      55                 :            : void bL_switcher_put_enabled(void);
      56                 :            : 
      57                 :            : int bL_switcher_trace_trigger(void);
      58                 :            : int bL_switcher_get_logical_index(u32 mpidr);
      59                 :            : 
      60                 :            : #else
      61                 :            : static inline int bL_switcher_register_notifier(struct notifier_block *nb)
      62                 :            : {
      63                 :            :         return 0;
      64                 :            : }
      65                 :            : 
      66                 :            : static inline int bL_switcher_unregister_notifier(struct notifier_block *nb)
      67                 :            : {
      68                 :            :         return 0;
      69                 :            : }
      70                 :            : 
      71                 :            : static inline bool bL_switcher_get_enabled(void) { return false; }
      72                 :            : static inline void bL_switcher_put_enabled(void) { }
      73                 :            : static inline int bL_switcher_trace_trigger(void) { return 0; }
      74                 :            : static inline int bL_switcher_get_logical_index(u32 mpidr) { return -EUNATCH; }
      75                 :            : #endif /* CONFIG_BL_SWITCHER */
      76                 :            : 
      77                 :            : #endif

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