/* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick */ static irqreturn_t timer_interrupt(int irq, void *dummy) { do_timer(1); #ifndef CONFIG_SMP update_process_times(user_mode(get_irq_regs())); #endif profile_tick(CPU_PROFILING); #ifdef CONFIG_HEARTBEAT /* use power LED as a heartbeat instead -- much more useful for debugging -- based on the version for PReP by Cort */ /* acts like an actual heart beat -- ie thump-thump-pause... */ if (mach_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 /* CONFIG_HEARTBEAT */ return IRQ_HANDLED; }
static irqreturn_t timer_interrupt(int irq, void *dummy) { xtime_update(1); update_process_times(user_mode(get_irq_regs())); profile_tick(CPU_PROFILING); #ifdef CONFIG_HEARTBEAT /* */ /* */ if (mach_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; /* */ period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; dist = period / 4; } } #endif /* */ return IRQ_HANDLED; }
/* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick */ static irqreturn_t timer_interrupt(int irq, void *dummy) { /* last time the cmos clock got updated */ static long last_rtc_update=0; /* may need to kick the hardware timer */ if (mach_tick) mach_tick(); write_seqlock(&xtime_lock); do_timer(1); #ifndef CONFIG_SMP update_process_times(user_mode(get_irq_regs())); #endif if (current->pid) profile_tick(CPU_PROFILING); /* * If we have an externally synchronized Linux clock, then update * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be * called as close as possible to 500 ms before the new second starts. */ if (ntp_synced() && xtime.tv_sec > last_rtc_update + 660 && (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 && (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) { if (set_rtc_mmss(xtime.tv_sec) == 0) last_rtc_update = xtime.tv_sec; else last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */ } #ifdef CONFIG_HEARTBEAT /* use power LED as a heartbeat instead -- much more useful for debugging -- based on the version for PReP by Cort */ /* acts like an actual heart beat -- ie thump-thump-pause... */ if (mach_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 /* CONFIG_HEARTBEAT */ write_sequnlock(&xtime_lock); return(IRQ_HANDLED); }
/* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick */ static void timer_interrupt(int irq, void *dummy, struct pt_regs * regs) { /* last time the cmos clock got updated */ static long last_rtc_update=0; /* may need to kick the hardware timer */ #if 0 if (mach_tick) mach_tick(); #endif do_timer(regs); #if 0 if (!user_mode(regs)) do_profile(regs->pc); #endif /* * If we have an externally synchronized Linux clock, then update * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be * called as close as possible to 500 ms before the new second starts. */ if ((time_status & STA_UNSYNC) == 0 && xtime.tv_sec > last_rtc_update + 660 && xtime.tv_usec >= 500000 - ((unsigned) tick) / 2 && xtime.tv_usec <= 500000 + ((unsigned) tick) / 2) { if (set_rtc_mmss(xtime.tv_sec) == 0) last_rtc_update = xtime.tv_sec; else last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */ } #if 0 #ifdef CONFIG_HEARTBEAT /* use power LED as a heartbeat instead -- much more useful for debugging -- based on the version for PReP by Cort */ /* acts like an actual heart beat -- ie thump-thump-pause... */ if (mach_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 /* CONFIG_HEARTBEAT */ #endif }
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 }