core.c

/**
 * @file kernel/sched/core.c
 *
 * @brief the core scheduling code
 */



#include <kernel/err.h>
#include <kernel/kthread.h>
#include <kernel/sched.h>
#include <kernel/init.h>
#include <kernel/tick.h>
#include <asm-generic/irqflags.h>
#include <asm-generic/spinlock.h>
#include <asm/switch_to.h>
#include <string.h>

#include <asm/leon.h>


#define MSG "SCHEDULER: "

static LIST_HEAD(kernel_schedulers);


/* XXX: per-cpu */
extern struct thread_info *current_set[];

ktime sched_last_time;
uint32_t sched_ev;

 void kthread_lock(void);
 void kthread_unlock(void);
void schedule(void)
{
	struct scheduler *sched;

	struct task_struct *next = NULL;
	struct task_struct *prev = NULL;

	struct task_struct *current;
	int64_t slot_ns = 1000000LL;
	int64_t wake_ns = 1000000000;

	ktime rt;
	ktime now;


	static int once[2];
	if (!once[leon3_cpuid()]) {

//	tick_set_mode(TICK_MODE_PERIODIC);
	tick_set_next_ns(1e9);	/* XXX default to 1s ticks initially */
	once[leon3_cpuid()] = 1;
	return;
	}



	arch_local_irq_disable();
//	if (leon3_cpuid() != 0)
//	printk("cpu %d\n", leon3_cpuid());

	/* get the current task for this CPU */
	/* XXX leon3_cpuid() should be smp_cpu_id() arch call*/
	current = current_set[leon3_cpuid()]->task;


//	if (leon3_cpuid() != 0)