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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152/* 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>
/* * 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);
#endif /* _TIMEKEEPING_INTERNAL_H */