asmlinkage long sys32_adjtimex(struct timex32 __user *utp) { struct timex txc; int ret; memset(&txc, 0, sizeof(struct timex)); if(get_user(txc.modes, &utp->modes) || __get_user(txc.offset, &utp->offset) || __get_user(txc.freq, &utp->freq) || __get_user(txc.maxerror, &utp->maxerror) || __get_user(txc.esterror, &utp->esterror) || __get_user(txc.status, &utp->status) || __get_user(txc.constant, &utp->constant) || __get_user(txc.precision, &utp->precision) || __get_user(txc.tolerance, &utp->tolerance) || __get_user(txc.time.tv_sec, &utp->time.tv_sec) || __get_user(txc.time.tv_usec, &utp->time.tv_usec) || __get_user(txc.tick, &utp->tick) || __get_user(txc.ppsfreq, &utp->ppsfreq) || __get_user(txc.jitter, &utp->jitter) || __get_user(txc.shift, &utp->shift) || __get_user(txc.stabil, &utp->stabil) || __get_user(txc.jitcnt, &utp->jitcnt) || __get_user(txc.calcnt, &utp->calcnt) || __get_user(txc.errcnt, &utp->errcnt) || __get_user(txc.stbcnt, &utp->stbcnt)) return -EFAULT; ret = do_adjtimex(&txc); /* adjust the conversion of TB to time of day to track adjtimex */ ppc_adjtimex(); if(put_user(txc.modes, &utp->modes) || __put_user(txc.offset, &utp->offset) || __put_user(txc.freq, &utp->freq) || __put_user(txc.maxerror, &utp->maxerror) || __put_user(txc.esterror, &utp->esterror) || __put_user(txc.status, &utp->status) || __put_user(txc.constant, &utp->constant) || __put_user(txc.precision, &utp->precision) || __put_user(txc.tolerance, &utp->tolerance) || __put_user(txc.time.tv_sec, &utp->time.tv_sec) || __put_user(txc.time.tv_usec, &utp->time.tv_usec) || __put_user(txc.tick, &utp->tick) || __put_user(txc.ppsfreq, &utp->ppsfreq) || __put_user(txc.jitter, &utp->jitter) || __put_user(txc.shift, &utp->shift) || __put_user(txc.stabil, &utp->stabil) || __put_user(txc.jitcnt, &utp->jitcnt) || __put_user(txc.calcnt, &utp->calcnt) || __put_user(txc.errcnt, &utp->errcnt) || __put_user(txc.stbcnt, &utp->stbcnt)) ret = -EFAULT; return ret; }
/* * timer_interrupt - gets called when the decrementer overflows, * with interrupts disabled. */ int timer_interrupt(struct pt_regs * regs) { int next_dec; unsigned long cur_tb; struct paca_struct *lpaca = get_paca(); unsigned long cpu = lpaca->xPacaIndex; irq_enter(); #ifndef CONFIG_PPC_ISERIES ppc64_do_profile(regs); #endif lpaca->xLpPaca.xIntDword.xFields.xDecrInt = 0; while (lpaca->next_jiffy_update_tb <= (cur_tb = get_tb())) { #ifdef CONFIG_SMP smp_local_timer_interrupt(regs); #endif if (cpu == boot_cpuid) { write_seqlock(&xtime_lock); tb_last_stamp = lpaca->next_jiffy_update_tb; do_timer(regs); timer_sync_xtime( cur_tb ); timer_check_rtc(); write_sequnlock(&xtime_lock); if ( adjusting_time && (time_adjust == 0) ) ppc_adjtimex(); } lpaca->next_jiffy_update_tb += tb_ticks_per_jiffy; } next_dec = lpaca->next_jiffy_update_tb - cur_tb; if (next_dec > lpaca->default_decr) next_dec = lpaca->default_decr; set_dec(next_dec); #ifdef CONFIG_PPC_ISERIES { struct ItLpQueue *lpq = lpaca->lpQueuePtr; if (lpq && ItLpQueue_isLpIntPending(lpq)) lpEvent_count += ItLpQueue_process(lpq, regs); } #endif irq_exit(); return 1; }