Contributors: 16
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| SeongJae Park |
56 |
22.22% |
1 |
4.55% |
| Heiner Kallweit |
50 |
19.84% |
1 |
4.55% |
| Linus Torvalds (pre-git) |
36 |
14.29% |
5 |
22.73% |
| Andrew Morton |
24 |
9.52% |
1 |
4.55% |
| Jeff Garzik |
18 |
7.14% |
1 |
4.55% |
| Valdis Kletnieks |
12 |
4.76% |
1 |
4.55% |
| Patrick Pannuto |
11 |
4.37% |
1 |
4.55% |
| Linus Torvalds |
11 |
4.37% |
1 |
4.55% |
| Maximilian Attems |
9 |
3.57% |
1 |
4.55% |
| Greg Kroah-Hartman |
9 |
3.57% |
2 |
9.09% |
| David Howells |
6 |
2.38% |
1 |
4.55% |
| Alok N Kataria |
5 |
1.98% |
2 |
9.09% |
| Anton Blanchard |
2 |
0.79% |
1 |
4.55% |
| Benjamin Herrenschmidt |
1 |
0.40% |
1 |
4.55% |
| Andy Shevchenko |
1 |
0.40% |
1 |
4.55% |
| Alexander A. Klimov |
1 |
0.40% |
1 |
4.55% |
| Total |
252 |
|
22 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_DELAY_H
#define _LINUX_DELAY_H
/*
* Copyright (C) 1993 Linus Torvalds
*
* Delay routines, using a pre-computed "loops_per_jiffy" value.
*
* Please note that ndelay(), udelay() and mdelay() may return early for
* several reasons:
* 1. computed loops_per_jiffy too low (due to the time taken to
* execute the timer interrupt.)
* 2. cache behaviour affecting the time it takes to execute the
* loop function.
* 3. CPU clock rate changes.
*
* Please see this thread:
* https://lists.openwall.net/linux-kernel/2011/01/09/56
*/
#include <linux/math.h>
#include <linux/sched.h>
extern unsigned long loops_per_jiffy;
#include <asm/delay.h>
/*
* Using udelay() for intervals greater than a few milliseconds can
* risk overflow for high loops_per_jiffy (high bogomips) machines. The
* mdelay() provides a wrapper to prevent this. For delays greater
* than MAX_UDELAY_MS milliseconds, the wrapper is used. Architecture
* specific values can be defined in asm-???/delay.h as an override.
* The 2nd mdelay() definition ensures GCC will optimize away the
* while loop for the common cases where n <= MAX_UDELAY_MS -- Paul G.
*/
#ifndef MAX_UDELAY_MS
#define MAX_UDELAY_MS 5
#endif
#ifndef mdelay
#define mdelay(n) (\
(__builtin_constant_p(n) && (n)<=MAX_UDELAY_MS) ? udelay((n)*1000) : \
({unsigned long __ms=(n); while (__ms--) udelay(1000);}))
#endif
#ifndef ndelay
static inline void ndelay(unsigned long x)
{
udelay(DIV_ROUND_UP(x, 1000));
}
#define ndelay(x) ndelay(x)
#endif
extern unsigned long lpj_fine;
void calibrate_delay(void);
void __attribute__((weak)) calibration_delay_done(void);
void msleep(unsigned int msecs);
unsigned long msleep_interruptible(unsigned int msecs);
void usleep_range_state(unsigned long min, unsigned long max,
unsigned int state);
static inline void usleep_range(unsigned long min, unsigned long max)
{
usleep_range_state(min, max, TASK_UNINTERRUPTIBLE);
}
static inline void usleep_idle_range(unsigned long min, unsigned long max)
{
usleep_range_state(min, max, TASK_IDLE);
}
static inline void ssleep(unsigned int seconds)
{
msleep(seconds * 1000);
}
/* see Documentation/timers/timers-howto.rst for the thresholds */
static inline void fsleep(unsigned long usecs)
{
if (usecs <= 10)
udelay(usecs);
else if (usecs <= 20000)
usleep_range(usecs, 2 * usecs);
else
msleep(DIV_ROUND_UP(usecs, 1000));
}
#endif /* defined(_LINUX_DELAY_H) */