GFS2: Support for I/O barriers
[pandora-kernel.git] / arch / blackfin / include / asm / timex.h
1 /*
2  * asm-blackfin/timex.h: cpu cycles!
3  *
4  * Copyright 2004-2008 Analog Devices Inc.
5  *
6  * Licensed under the GPL-2 or later.
7  */
8
9 #ifndef _ASM_BLACKFIN_TIMEX_H
10 #define _ASM_BLACKFIN_TIMEX_H
11
12 #define CLOCK_TICK_RATE 1000000 /* Underlying HZ */
13
14 typedef unsigned long long cycles_t;
15
16 static inline cycles_t get_cycles(void)
17 {
18         unsigned long tmp, tmp2;
19         __asm__("%0 = cycles; %1 = cycles2;" : "=d"(tmp), "=d"(tmp2));
20         return tmp | ((cycles_t)tmp2 << 32);
21 }
22
23 #endif