'\" t
.\"     Title: request_percpu_irq
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Public Functions Provided
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "REQUEST_PERCPU_IRQ" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Public Functions Provided"
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.SH "NAME"
request_percpu_irq \- allocate a percpu interrupt line
.SH "SYNOPSIS"
.HP \w'int\ request_percpu_irq('u
.BI "int request_percpu_irq(unsigned\ int\ " "irq" ", irq_handler_t\ " "handler" ", const\ char\ *\ " "devname" ", void\ __percpu\ *\ " "dev_id" ");"
.SH "ARGUMENTS"
.PP
\fIirq\fR
.RS 4
Interrupt line to allocate
.RE
.PP
\fIhandler\fR
.RS 4
Function to be called when the IRQ occurs\&.
.RE
.PP
\fIdevname\fR
.RS 4
An ascii name for the claiming device
.RE
.PP
\fIdev_id\fR
.RS 4
A percpu cookie passed back to the handler function
.RE
.SH "DESCRIPTION"
.PP
This call allocates interrupt resources and enables the interrupt on the local CPU\&. If the interrupt is supposed to be enabled on other CPUs, it has to be done on each CPU using
\fBenable_percpu_irq\fR\&.
.PP
Dev_id must be globally unique\&. It is a per\-cpu variable, and the handler gets called with the interrupted CPU\*(Aqs instance of that variable\&.
.SH "AUTHORS"
.PP
\fBThomas Gleixner\fR <\&tglx@linutronix.de\&>
.RS 4
Author.
.RE
.PP
\fBIngo Molnar\fR <\&mingo@elte.hu\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br