Release 4.17 kernel/time/timekeeping_internal.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _TIMEKEEPING_INTERNAL_H
#define _TIMEKEEPING_INTERNAL_H
/*
* timekeeping debug functions
*/
#include <linux/clocksource.h>
#include <linux/time.h>
#ifdef CONFIG_DEBUG_FS
extern void tk_debug_account_sleep_time(struct timespec64 *t);
#else
#define tk_debug_account_sleep_time(x)
#endif
#ifdef CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE
static inline u64 clocksource_delta(u64 now, u64 last, u64 mask)
{
u64 ret = (now - last) & mask;
/*
* Prevent time going backwards by checking the MSB of mask in
* the result. If set, return 0.
*/
return ret & ~(mask >> 1) ? 0 : ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Gleixner | 33 | 78.57% | 2 | 66.67% |
| Yang Yingliang | 9 | 21.43% | 1 | 33.33% |
| Total | 42 | 100.00% | 3 | 100.00% |
#else
static inline u64 clocksource_delta(u64 now, u64 last, u64 mask)
{
return (now - last) & mask;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Gleixner | 25 | 100.00% | 2 | 100.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
#endif
#endif /* _TIMEKEEPING_INTERNAL_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Gleixner | 68 | 59.65% | 3 | 42.86% |
| Colin Cross | 35 | 30.70% | 1 | 14.29% |
| Yang Yingliang | 9 | 7.89% | 1 | 14.29% |
| John Stultz | 1 | 0.88% | 1 | 14.29% |
| Greg Kroah-Hartman | 1 | 0.88% | 1 | 14.29% |
| Total | 114 | 100.00% | 7 | 100.00% |
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