linux/arch/x86/include/asm/vgtod.h
Andy Lutomirski 98d0ac38ca x86-64: Move vread_tsc and vread_hpet into the vDSO
The vsyscall page now consists entirely of trap instructions.

Cc: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/637648f303f2ef93af93bae25186e9a1bea093f5.1310639973.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-14 17:57:05 -07:00

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561 B
C

#ifndef _ASM_X86_VGTOD_H
#define _ASM_X86_VGTOD_H
#include <asm/vsyscall.h>
#include <linux/clocksource.h>
struct vsyscall_gtod_data {
seqlock_t lock;
/* open coded 'struct timespec' */
time_t wall_time_sec;
u32 wall_time_nsec;
struct timezone sys_tz;
struct { /* extract of a clocksource struct */
int vclock_mode;
cycle_t cycle_last;
cycle_t mask;
u32 mult;
u32 shift;
} clock;
struct timespec wall_to_monotonic;
struct timespec wall_time_coarse;
};
extern struct vsyscall_gtod_data vsyscall_gtod_data;
#endif /* _ASM_X86_VGTOD_H */