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🔧 改用local apic定时器进行进程时间片更新

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This commit is contained in:
fslongjin
2022-07-11 21:47:28 +08:00
parent 594aeadf65
commit defb9e769c
9 changed files with 220 additions and 51 deletions
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50
kernel/exception/irq.c
View File

@ -1,4 +1,5 @@
#include "irq.h"
#include <common/errno.h>
// 对进行
#if _INTR_8259A_
@ -148,6 +149,31 @@ void (*SMP_interrupt_table[SMP_IRQ_NUM])(void) =
IRQ0xd1interrupt,
};
// 初始化local apic中断服务程序数组
Build_IRQ(0x96);
Build_IRQ(0x97);
Build_IRQ(0x98);
Build_IRQ(0x99);
Build_IRQ(0x9a);
Build_IRQ(0x9b);
Build_IRQ(0x9c);
Build_IRQ(0x9d);
Build_IRQ(0x9e);
Build_IRQ(0x9f);
void (*local_apic_interrupt_table[LOCAL_APIC_IRQ_NUM])(void) =
{
IRQ0x96interrupt,
IRQ0x97interrupt,
IRQ0x98interrupt,
IRQ0x99interrupt,
IRQ0x9ainterrupt,
IRQ0x9binterrupt,
IRQ0x9cinterrupt,
IRQ0x9dinterrupt,
IRQ0x9einterrupt,
IRQ0x9finterrupt,
};
/**
* @brief 中断注册函数
*
@ -162,14 +188,24 @@ void (*SMP_interrupt_table[SMP_IRQ_NUM])(void) =
int irq_register(ul irq_num, void *arg, void (*handler)(ul irq_num, ul parameter, struct pt_regs *regs), ul paramater, hardware_intr_controller *controller, char *irq_name)
{
// 由于为I/O APIC分配的中断向量号是从32开始的，因此要减去32才是对应的interrupt_desc的元素
irq_desc_t *p = &interrupt_desc[irq_num - 32];
irq_desc_t *p = NULL;
if (irq_num >= 32 && irq_num < 0x80)
p = &interrupt_desc[irq_num - 32];
else if (irq_num >= 150 && irq_num < 160)
p = &local_apic_interrupt_desc[irq_num - 150];
else
{
kerror("irq_register(): invalid irq num: %ld.", irq_num);
return -EINVAL;
}
p->controller = controller;
int namelen = sizeof(strlen(irq_name)+1);
p->irq_name = (char *)kmalloc(namelen,0);
memset(p->irq_name, 0, namelen);
strncpy(p->irq_name, irq_name, namelen);
if (p->irq_name == NULL)
{
int namelen = sizeof(strlen(irq_name) + 1);
p->irq_name = (char *)kmalloc(namelen, 0);
memset(p->irq_name, 0, namelen);
strncpy(p->irq_name, irq_name, namelen);
}
p->parameter = paramater;
p->flags = 0;

5
kernel/exception/irq.h
View File

@ -16,6 +16,7 @@
#include "../process/ptrace.h"
#define SMP_IRQ_NUM 10
#define LOCAL_APIC_IRQ_NUM 10
extern void (*interrupt_table[24])(void);
extern void do_IRQ(struct pt_regs *regs, ul number);
@ -23,6 +24,7 @@ extern void do_IRQ(struct pt_regs *regs, ul number);
extern void (*SMP_interrupt_table[SMP_IRQ_NUM])(void);
extern void (*syscall_intr_table[1])(void);
extern void (*local_apic_interrupt_table[LOCAL_APIC_IRQ_NUM])(void);
/* ========= 中断向量分配表 ==========
@ -128,9 +130,10 @@ typedef struct
#define IRQ_NUM 24
// 这两个表一定要放在这里，否则在HPET初始化后收到中断，会产生page fault
irq_desc_t interrupt_desc[IRQ_NUM] = {0};
irq_desc_t local_apic_interrupt_desc[20] = {0};
irq_desc_t SMP_IPI_desc[SMP_IRQ_NUM] = {0};
/**
* @brief 中断注册函数
*