Thread View: cn.bbs.comp.unix.programming.kernel
1 messages
1 total messages
Started by f
Wed, 13 Mar 2002 09:11
Re: һ��do_IRQ()������
Author: f
Date: Wed, 13 Mar 2002 09:11
Date: Wed, 13 Mar 2002 09:11
27 lines
2000 bytes
2000 bytes
�����й�ϵ��
pending��ʾ���ڻ����жϵȴ�����
inprogress��ʾ�˳��˴�����
����ûʲô������
�� �� xianai (xianai) �Ĵ������ᵽ: ��
: 1: for (;;) {
: 2: spin_unlock(&desc->lock);
: 3: handle_IRQ_event(irq, ®s, action);
: 4: spin_lock(&desc->lock);
: 5: if (!(desc->status & IRQ_PENDING))
: 6: break;
: 7: desc->status &= ~IRQ_PENDING;
: }
: 9: desc->status &= ~IRQ_INPROGRESS;
: /*��Ȼ��5:�жϺ�break�����ģ�9:�б�Ҫ����һ��ô��*/
: out:
: ...................
--
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