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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
View file

@ -6,6 +6,7 @@
#include <linux/mc146818rtc.h> #include <linux/mc146818rtc.h>
#include <asm/time.h> #include <asm/time.h>
#include <asm/vsyscall.h>
#ifdef CONFIG_X86_32 #ifdef CONFIG_X86_32
# define CMOS_YEARS_OFFS 1900 # define CMOS_YEARS_OFFS 1900
@ -194,3 +195,12 @@ int update_persistent_clock(struct timespec now)
{ {
return set_rtc_mmss(now.tv_sec); 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);

8
include/asm-x86/msr.h
View file

@ -91,13 +91,7 @@ static inline int native_write_msr_safe(unsigned int msr,
return err; return err;
} }
static inline unsigned long long native_read_tsc(void) extern unsigned long long 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);
}
static inline unsigned long long native_read_pmc(int counter) static inline unsigned long long native_read_pmc(int counter)
{ {