select_smp_affinity(irq); retval = setup_irq(irq, action); /* 调用setup_irq注册该中断的irqaction结构体 */ if (retval) kfree(action); return retval; } 由上可以看出,request_irq的大致流程为先对申请的中断线进行安全检测,然后根据request_irq传进来的参数,动态创建该中断对应的irqaction结构体,最后...
This is * important for shared interrupt handlers as we do * not invoke setup_affinity() for the secondary * handlers as everything is already set up. Even for * interrupts marked with IRQF_NO_BALANCE this is * correct as we want the thread to move to the cpu(s) * on which the ...
IRQ(中断请求)是硬件设备发送给CPU的一种信号,用于通知CPU某种事件(如数据接收、数据传输等)。在Linux中,IRQ设置可以通过irq_set_affinity函数来实现。irq_set_affinity函数可以用来设置IRQ处理程序所在的CPU核心,能够实现对中断的控制。可以指定一个或多个CPU核心,这样IR...
initcnt,node=first_online_node;232structirq_desc*desc;233234init_irq_default_affinity();//默认的...
IRQ(中断请求)是硬件设备发送给CPU的一种信号,用于通知CPU某种事件(如数据接收、数据传输等)。在Linux中,IRQ设置可以通过irq_set_affinity函数来实现。irq_set_affinity函数可以用来设置IRQ处理程序所在的CPU核心,能够实现对中断的控制。可以指定一个或多个CPU核心,这样IR...
select_smp_affinity(irq); retval = setup_irq(irq, action); /*调用setup_irq注册该中断的irqaction结构体*/ if (retval) kfree(action); return retval; } 由上可以看出,request_irq的大致流程为先对申请的中断线进行安全检测,然后根据request_irq传进来的参数,动态创建该中断对应的irqaction结构体,最后通过...
I wanted to set IRQ affinity to some CPU for a particular GPIO interrupt. Please let me know how can I do it. I wanted to do it from my own kernel module. First I tried to do it from sysfs, but it did not work. I tried to use FUNC2 (GPIO138) for gen...
Setup 1. In the example below CentOS 7 was use 2. MLNX_OFED 2.4 For basic users it is recommended to usemlnx_tuneperformance tool that tunes all performance related parameters (fast and easy). To view and tune IRQ Affinity specifically, follow the next steps. ...
select_smp_affinity(irq); ... ... retval= setup_irq(irq, action);//进入setup_irq(irq, action),设置irq_ desc[irq]->action if(retval) kfree(action);returnretval; } 从上面分析,request_irq()函数主要注册了一个irqaction型action,然后把参数都赋给这个action,最后进入setup_irq(irq, action)设...
select_smp_affinity(irq); retval=setup_irq(irq,action);/*调用setup_irq注册该中断的irqaction结构体*/ if(retval) kfree(action); returnretval; } 由上可以看出,request_irq的大致流程为先对申请的中断线进行安全检测,然后根据request_irq传进来的参数,动态创建该中断对应的irqaction结构体,最后通过setup_irq...