minix/kernel/smp.c
2010-09-15 14:10:54 +00:00

34 lines
640 B
C

#include "smp.h"
unsigned ncpus;
unsigned ht_per_core;
unsigned bsp_cpu_id;
struct cpu cpus[CONFIG_MAX_CPUS];
static volatile unsigned ap_cpus_booted;
SPINLOCK_DEFINE(big_kernel_lock)
SPINLOCK_DEFINE(boot_lock)
PUBLIC void wait_for_APs_to_finish_booting(void)
{
/* we must let the other CPUs to run in kernel mode first */
BKL_UNLOCK();
while (ap_cpus_booted != (ncpus - 1))
arch_pause();
/* now we have to take the lock again as we continu execution */
BKL_LOCK();
}
PUBLIC void ap_boot_finished(unsigned cpu)
{
ap_cpus_booted++;
}
PUBLIC void smp_ipi_halt_handler(void)
{
arch_stop_local_timer();
arch_smp_halt_cpu();
}