mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-08-30 08:45:18 -04:00
79bd39c58f
All architectures are now fully using the generic vDSO infrastructure. They don't need these declarations anymore to implement the functions in architecture-specific code. Move them to the private header. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260707-timekeeping-header-cleanup-v1-2-e85ad96409a9@linutronix.de
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _TIMEKEEPING_INTERNAL_H
|
|
#define _TIMEKEEPING_INTERNAL_H
|
|
|
|
#include <linux/clocksource.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/time.h>
|
|
|
|
struct timekeeper;
|
|
|
|
/*
|
|
* timekeeping debug functions
|
|
*/
|
|
#ifdef CONFIG_DEBUG_FS
|
|
|
|
DECLARE_PER_CPU(unsigned long, timekeeping_mg_floor_swaps);
|
|
|
|
static inline void timekeeping_inc_mg_floor_swaps(void)
|
|
{
|
|
this_cpu_inc(timekeeping_mg_floor_swaps);
|
|
}
|
|
|
|
extern void tk_debug_account_sleep_time(const struct timespec64 *t);
|
|
|
|
#else
|
|
|
|
#define tk_debug_account_sleep_time(x)
|
|
|
|
static inline void timekeeping_inc_mg_floor_swaps(void)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
static inline u64 clocksource_delta(u64 now, u64 last, u64 mask, u64 max_delta)
|
|
{
|
|
u64 ret = (now - last) & mask;
|
|
|
|
/*
|
|
* Prevent time going backwards by checking the result against
|
|
* @max_delta. If greater, return 0.
|
|
*/
|
|
return ret > max_delta ? 0 : ret;
|
|
}
|
|
|
|
/* Semi public for serialization of non timekeeper VDSO updates. */
|
|
unsigned long timekeeper_lock_irqsave(void);
|
|
void timekeeper_unlock_irqrestore(unsigned long flags);
|
|
|
|
/* NTP specific interface to access the current seconds value */
|
|
long ktime_get_ntp_seconds(unsigned int id);
|
|
|
|
#ifdef CONFIG_GENERIC_GETTIMEOFDAY
|
|
|
|
extern void update_vsyscall(struct timekeeper *tk);
|
|
extern void update_vsyscall_tz(void);
|
|
extern void vdso_time_update_aux(struct timekeeper *tk);
|
|
|
|
#else
|
|
|
|
static inline void update_vsyscall(struct timekeeper *tk)
|
|
{
|
|
}
|
|
static inline void update_vsyscall_tz(void)
|
|
{
|
|
}
|
|
static inline void vdso_time_update_aux(struct timekeeper *tk)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _TIMEKEEPING_INTERNAL_H */
|