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time.c
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /*
- * BK Id: %F% %I% %G% %U% %#%
- */
- #include <linux/config.h> /* CONFIG_HEARTBEAT */
- #include <linux/errno.h>
- #include <linux/sched.h>
- #include <linux/kernel.h>
- #include <linux/param.h>
- #include <linux/string.h>
- #include <linux/mm.h>
- #include <asm/machdep.h>
- #include <asm/io.h>
- #include <linux/timex.h>
- unsigned long m68k_get_rtc_time(void)
- {
- unsigned int year, mon, day, hour, min, sec;
- extern void arch_gettod(int *year, int *mon, int *day, int *hour,
- int *min, int *sec);
- arch_gettod (&year, &mon, &day, &hour, &min, &sec);
- if ((year += 1900) < 1970)
- year += 100;
- return mktime(year, mon, day, hour, min, sec);
- }
- int m68k_set_rtc_time(unsigned long nowtime)
- {
- if (mach_set_clock_mmss)
- return mach_set_clock_mmss (nowtime);
- return -1;
- }
- void apus_heartbeat (void)
- {
- #ifdef CONFIG_HEARTBEAT
- static unsigned cnt = 0, period = 0, dist = 0;
- if (cnt == 0 || cnt == dist)
- mach_heartbeat( 1 );
- else if (cnt == 7 || cnt == dist+7)
- mach_heartbeat( 0 );
- if (++cnt > period) {
- cnt = 0;
- /* The hyperbolic function below modifies the heartbeat period
- * length in dependency of the current (5min) load. It goes
- * through the points f(0)=126, f(1)=86, f(5)=51,
- * f(inf)->30. */
- period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
- dist = period / 4;
- }
- #endif
- }