'\" t
.\"     Title: enum probe_type
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Device drivers infrastructure
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ENUM PROBE_TYPE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
enum_probe_type \- device driver probe type to try Device drivers may opt in for special handling of their respective probe routines\&. This tells the core what to expect and prefer\&.
.SH "SYNOPSIS"
.sp
.nf
enum probe_type {
  PROBE_DEFAULT_STRATEGY,
  PROBE_PREFER_ASYNCHRONOUS,
  PROBE_FORCE_SYNCHRONOUS
};  
.fi
.SH "CONSTANTS"
.PP
PROBE_DEFAULT_STRATEGY
.RS 4
Used by drivers that work equally well whether probed synchronously or asynchronously\&.
.RE
.PP
PROBE_PREFER_ASYNCHRONOUS
.RS 4
Drivers for
\(lqslow\(rq
devices which probing order is not essential for booting the system may opt into executing their probes asynchronously\&.
.RE
.PP
PROBE_FORCE_SYNCHRONOUS
.RS 4
Use this to annotate drivers that need their probe routines to run synchronously with driver and device registration (with the exception of \-EPROBE_DEFER handling \- re\-probing always ends up being done asynchronously)\&.
.RE
.SH "DESCRIPTION"
.PP
Note that the end goal is to switch the kernel to use asynchronous probing by default, so annotating drivers with
\fBPROBE_PREFER_ASYNCHRONOUS\fR
is a temporary measure that allows us to speed up boot process while we are validating the rest of the drivers\&.
.SH "COPYRIGHT"
.br