voidhandle_edge_eoi_irq(unsignedintirq, struct irq_desc *desc){structirq_chip*chip=irq_desc_get_chip(desc);raw_spin_lock(&desc->lock); desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);if(unlikely(irqd_irq_disabled(&desc->irq_data) || irqd_irq_inprogress(&desc->irq_data) || !d...
handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq * Interrupt occures on the falling and/or rising edge of a hardware * signal. The occurence is latched into the irq controller hard...
handle_level_irq() { mask( irq ); ack( irq ); status |=IRQ_INPROGRESS; handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq * Interrupt occures on the falling and/or rising edge...
假定我们刚好处于调用handle_IRQ_event之后的位置上。在第一个IRQ的ISR处理程序正在运行时,可能同时有第二个IRQ请求发送过来,那么IRQ_PENDING置位,因此循环将从头开始。但是在这种情况下,IRQ已经被屏蔽,因而chip->unmask接触IRQ的屏蔽,并清除IRQ_MASKED标志。这确保在handle_IRQ_event执行期间只能发生一个中断。 我们首...
handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq * Interrupt occures on the falling and/or rising edge of a hardware * signal. The occurence is latched into the irq controller hard...
一般地说，句柄是一个固定的结构序号，你这里handle应该是一个指向结构的指针，这个结构中的乘以eventId是对应IRQ序号。你可以查一下handle的定义。
[ 122.041878] serial8250_rx_chars+0x25/0xb0 [ 122.041879] serial8250_handle_irq.part.15+0x142/0x1d0 [ 122.041879] serial8250_default_handle_irq+0x82/0xe0 [ 122.041880] serial8250_interrupt+0xdd/0x1b0 [ 122.041880] __handle_irq_event_percpu+0xfa/0x820 [ 122.041881] handle_irq_event_...
After the operating system boots, the kernel panics with the following call trace: Jan 5 13:28:21 snafubuild Call Trace: {:3w_9xxx:twa_interrupt+1323} {handle_IRQ_event+41} SolutionThe 3ware Software Suite includes the following core components: Controller firmware OS driver RAID management...
staticintgp_libusb1_check_int(GPPort *port,char*bytes,intsize,inttimeout){intret;structtimevaltv;C_PARAMS (port && port->pl->dh && timeout >=0);if(port->pl->nrofirqs)gotohandleirq; tv.tv_sec = timeout/1000; tv.tv_usec = (timeout%1000)*1000; ...
[ 609.439515] [<c0022114>] (omap2_gp_timer_interrupt+0x0/0x3c) from [<c0070328>] (handle_irq_event_percpu+0x54/0x1c0)[ 609.450505] [<c00702d4>] (handle_irq_event_percpu+0x0/0x1c0) from [<c00704c4>] (handle_irq_event+0x30/0x40)[ 609.460766] [<c0070494>] (handle_irq_...