1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
#ifndef _LINUX_DELAY_H
|
|
#define _LINUX_DELAY_H
|
|
|
|
/*
|
|
* Copyright (C) 1993 Linus Torvalds
|
|
*
|
|
* Delay routines, using a pre-computed "loops_per_jiffy" value.
|
|
*/
|
|
|
|
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
|
|
|
|
#ifdef notdef
|
|
#define mdelay(n) (\
|
|
{unsigned long __ms=(n); while (__ms--) udelay(1000);})
|
|
#else
|
|
#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
|
|
#define ndelay(x) udelay(((x)+999)/1000)
|
|
#endif
|
|
|
|
void calibrate_delay(void);
|
|
void msleep(unsigned int msecs);
|
|
unsigned long msleep_interruptible(unsigned int msecs);
|
|
|
|
static inline void ssleep(unsigned int seconds)
|
|
{
|
|
msleep(seconds * 1000);
|
|
}
|
|
|
|
#endif /* defined(_LINUX_DELAY_H) */
|