| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* | 
|  | 2 | * This file is subject to the terms and conditions of the GNU General Public | 
|  | 3 | * License.  See the file "COPYING" in the main directory of this archive | 
|  | 4 | * for more details. | 
|  | 5 | * | 
|  | 6 | * Copyright (C) 1998, 1999, 2003 by Ralf Baechle | 
|  | 7 | */ | 
|  | 8 | #ifndef _ASM_TIMEX_H | 
|  | 9 | #define _ASM_TIMEX_H | 
|  | 10 |  | 
| Atsushi Nemoto | 8f9a2b3 | 2006-09-07 01:00:22 +0900 | [diff] [blame] | 11 | #ifdef __KERNEL__ | 
|  | 12 |  | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <asm/mipsregs.h> | 
|  | 14 |  | 
|  | 15 | /* | 
| Ralf Baechle | 72fc19f | 2007-11-01 15:45:37 +0000 | [diff] [blame] | 16 | * This is the clock rate of the i8253 PIT.  A MIPS system may not have | 
|  | 17 | * a PIT by the symbol is used all over the kernel including some APIs. | 
|  | 18 | * So keeping it defined to the number for the PIT is the only sane thing | 
|  | 19 | * for now. | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | */ | 
| Ralf Baechle | 72fc19f | 2007-11-01 15:45:37 +0000 | [diff] [blame] | 21 | #define CLOCK_TICK_RATE 1193182 | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 |  | 
|  | 23 | /* | 
|  | 24 | * Standard way to access the cycle counter. | 
|  | 25 | * Currently only used on SMP for scheduling. | 
|  | 26 | * | 
|  | 27 | * Only the low 32 bits are available as a continuously counting entity. | 
|  | 28 | * But this only means we'll force a reschedule every 8 seconds or so, | 
|  | 29 | * which isn't an evil thing. | 
|  | 30 | * | 
|  | 31 | * We know that all SMP capable CPUs have cycle counters. | 
|  | 32 | */ | 
|  | 33 |  | 
|  | 34 | typedef unsigned int cycles_t; | 
|  | 35 |  | 
| Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 36 | static inline cycles_t get_cycles(void) | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | { | 
| Ralf Baechle | efb9ca0 | 2007-11-08 11:37:47 +0000 | [diff] [blame] | 38 | return 0; | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | } | 
|  | 40 |  | 
| Atsushi Nemoto | 8f9a2b3 | 2006-09-07 01:00:22 +0900 | [diff] [blame] | 41 | #endif /* __KERNEL__ */ | 
|  | 42 |  | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #endif /*  _ASM_TIMEX_H */ |