mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 17:54:13 +08:00
ee238e5ca6
This patch add provisions for time related functions so they
can be later replaced by paravirt versions.
it basically encloses {g,s}et_wallclock inside the
already existent functions update_persistent_clock and
read_persistent_clock, and defines {s,g}et_wallclock
to the core of such functions.
it also allow for a later-on-game time initialization, as done
by i386. Paravirt guests can set a function to do their own
initialization this way.
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
#ifndef _ASMX86_TIME_H
|
|
#define _ASMX86_TIME_H
|
|
|
|
extern void (*late_time_init)(void);
|
|
extern void hpet_time_init(void);
|
|
|
|
#include <asm/mc146818rtc.h>
|
|
#ifdef CONFIG_X86_32
|
|
#include <linux/efi.h>
|
|
|
|
static inline unsigned long native_get_wallclock(void)
|
|
{
|
|
unsigned long retval;
|
|
|
|
if (efi_enabled)
|
|
retval = efi_get_time();
|
|
else
|
|
retval = mach_get_cmos_time();
|
|
|
|
return retval;
|
|
}
|
|
|
|
static inline int native_set_wallclock(unsigned long nowtime)
|
|
{
|
|
int retval;
|
|
|
|
if (efi_enabled)
|
|
retval = efi_set_rtc_mmss(nowtime);
|
|
else
|
|
retval = mach_set_rtc_mmss(nowtime);
|
|
|
|
return retval;
|
|
}
|
|
|
|
#else
|
|
extern void native_time_init_hook(void);
|
|
|
|
static inline unsigned long native_get_wallclock(void)
|
|
{
|
|
return mach_get_cmos_time();
|
|
}
|
|
|
|
static inline int native_set_wallclock(unsigned long nowtime)
|
|
{
|
|
return mach_set_rtc_mmss(nowtime);
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_PARAVIRT
|
|
#include <asm/paravirt.h>
|
|
#else /* !CONFIG_PARAVIRT */
|
|
|
|
#define get_wallclock() native_get_wallclock()
|
|
#define set_wallclock(x) native_set_wallclock(x)
|
|
#define choose_time_init() hpet_time_init
|
|
|
|
#endif /* CONFIG_PARAVIRT */
|
|
|
|
#endif
|