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x86: move native_read_tsc() offline

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move native_read_tsc() offline.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar
2008-01-30 13:32:39 +01:00
parent fde1b3fa94
commit cdc7957d19
2 changed files with 11 additions and 7 deletions
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10
arch/x86/kernel/rtc.c
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@@ -6,6 +6,7 @@
#include <linux/mc146818rtc.h>
#include <asm/time.h>
#include <asm/vsyscall.h>
#ifdef CONFIG_X86_32
# define CMOS_YEARS_OFFS 1900
@@ -194,3 +195,12 @@ int update_persistent_clock(struct timespec now)
{
return set_rtc_mmss(now.tv_sec);
}
unsigned long long __vsyscall_fn native_read_tsc(void)
{
DECLARE_ARGS(val, low, high);
asm volatile("rdtsc" : EAX_EDX_RET(val, low, high));
return EAX_EDX_VAL(val, low, high);
}
EXPORT_SYMBOL_GPL(native_read_tsc);