static void start_softclock(void *dummy) { struct callout_cpu *cc; #ifdef SMP int cpu; #endif cc = CC_CPU(timeout_cpu); if (swi_add(&clk_intr_event, "clock", softclock, cc, SWI_CLOCK, INTR_MPSAFE, &softclock_ih)) panic("died while creating standard software ithreads"); cc->cc_cookie = softclock_ih; #ifdef SMP for (cpu = 0; cpu <= mp_maxid; cpu++) { if (cpu == timeout_cpu) continue; if (CPU_ABSENT(cpu)) continue; cc = CC_CPU(cpu); if (swi_add(NULL, "clock", softclock, cc, SWI_CLOCK, INTR_MPSAFE, &cc->cc_cookie)) panic("died while creating standard software ithreads"); cc->cc_callout = NULL; /* Only cpu0 handles timeout(). */ cc->cc_callwheel = malloc( sizeof(struct callout_tailq) * callwheelsize, M_CALLOUT, M_WAITOK); callout_cpu_init(cc); } #endif }
/* * kern_timeout_callwheel_init() - initialize previously reserved callwheel * space. * * This code is called just once, after the space reserved for the * callout wheel has been finalized. */ void kern_timeout_callwheel_init(void) { callout_cpu_init(CC_CPU(V_timeout_cpu)); }