diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-02-20 19:13:30 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-20 19:13:30 +0000 |
| commit | 5a84d159061d914c8dd4aa372ac6e9529c2be453 (patch) | |
| tree | 9b08af78085334af44414adafe0096276f8fe0ff /include/asm-i386/tsc.h | |
| parent | e80a0e6e7ccdf64575d4384cb4172860422f5b81 (diff) | |
| parent | 7d477a04a619e90ee08724e8f2d8803c6bdfcef8 (diff) | |
Merge ARM fixes
Diffstat (limited to 'include/asm-i386/tsc.h')
| -rw-r--r-- | include/asm-i386/tsc.h | 49 |
1 files changed, 1 insertions, 48 deletions
diff --git a/include/asm-i386/tsc.h b/include/asm-i386/tsc.h index c13933185c1..e997891cc7c 100644 --- a/include/asm-i386/tsc.h +++ b/include/asm-i386/tsc.h @@ -1,48 +1 @@ -/* - * linux/include/asm-i386/tsc.h - * - * i386 TSC related functions - */ -#ifndef _ASM_i386_TSC_H -#define _ASM_i386_TSC_H - -#include <asm/processor.h> - -/* - * Standard way to access the cycle counter on i586+ CPUs. - * Currently only used on SMP. - * - * If you really have a SMP machine with i486 chips or older, - * compile for that, and this will just always return zero. - * That's ok, it just means that the nicer scheduling heuristics - * won't work for you. - * - * We only use the low 32 bits, and we'd simply better make sure - * that we reschedule before that wraps. Scheduling at least every - * four billion cycles just basically sounds like a good idea, - * regardless of how fast the machine is. - */ -typedef unsigned long long cycles_t; - -extern unsigned int cpu_khz; -extern unsigned int tsc_khz; - -static inline cycles_t get_cycles(void) -{ - unsigned long long ret = 0; - -#ifndef CONFIG_X86_TSC - if (!cpu_has_tsc) - return 0; -#endif - -#if defined(CONFIG_X86_GENERIC) || defined(CONFIG_X86_TSC) - rdtscll(ret); -#endif - return ret; -} - -extern void tsc_init(void); -extern void mark_tsc_unstable(void); - -#endif +#include <asm-x86_64/tsc.h> |