|  | /* | 
|  | * sched_clock.h: support for extending counters to full 64-bit ns counter | 
|  | * | 
|  | * This program is free software; you can redistribute it and/or modify | 
|  | * it under the terms of the GNU General Public License version 2 as | 
|  | * published by the Free Software Foundation. | 
|  | */ | 
|  | #ifndef LINUX_SCHED_CLOCK | 
|  | #define LINUX_SCHED_CLOCK | 
|  |  | 
|  | #ifdef CONFIG_GENERIC_SCHED_CLOCK | 
|  | extern void sched_clock_postinit(void); | 
|  |  | 
|  | extern void sched_clock_register(u64 (*read)(void), int bits, | 
|  | unsigned long rate); | 
|  | #else | 
|  | static inline void sched_clock_postinit(void) { } | 
|  |  | 
|  | static inline void sched_clock_register(u64 (*read)(void), int bits, | 
|  | unsigned long rate) | 
|  | { | 
|  | ; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #endif |