e2701da5a9
- APIC timer always reprogrammed if expired - timer tick never happens when in kernel => never immediate return from userspace to kernel because of a buffered interrupt - renamed argument to lapic_set_timer_one_shot() - removed arch_ prefix from timer functions
54 lines
940 B
C
54 lines
940 B
C
#include "smp.h"
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#include "interrupt.h"
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unsigned ncpus;
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unsigned ht_per_core;
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unsigned bsp_cpu_id;
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struct cpu cpus[CONFIG_MAX_CPUS];
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static volatile unsigned ap_cpus_booted;
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SPINLOCK_DEFINE(big_kernel_lock)
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SPINLOCK_DEFINE(boot_lock)
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PUBLIC void wait_for_APs_to_finish_booting(void)
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{
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/* we must let the other CPUs to run in kernel mode first */
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BKL_UNLOCK();
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while (ap_cpus_booted != (ncpus - 1))
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arch_pause();
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/* now we have to take the lock again as we continu execution */
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BKL_LOCK();
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}
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PUBLIC void ap_boot_finished(unsigned cpu)
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{
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ap_cpus_booted++;
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}
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PUBLIC void smp_ipi_halt_handler(void)
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{
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ipi_ack();
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stop_local_timer();
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arch_smp_halt_cpu();
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}
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PUBLIC void smp_schedule(unsigned cpu)
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{
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arch_send_smp_schedule_ipi(cpu);
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}
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PUBLIC void smp_ipi_sched_handler(void)
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{
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struct proc * p;
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ipi_ack();
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p = get_cpulocal_var(proc_ptr);
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if (p->p_endpoint != IDLE)
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RTS_SET(p, RTS_PREEMPTED); /* calls dequeue() */
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}
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