'\" t
.\"     Title: schedule_hrtimeout_range
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Driver Basics
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SCHEDULE_HRTIMEOUT_R" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Driver Basics"
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.SH "NAME"
schedule_hrtimeout_range \- sleep until timeout
.SH "SYNOPSIS"
.HP \w'int\ __sched\ schedule_hrtimeout_range('u
.BI "int __sched schedule_hrtimeout_range(ktime_t\ *\ " "expires" ", u64\ " "delta" ", const\ enum\ hrtimer_mode\ " "mode" ");"
.SH "ARGUMENTS"
.PP
\fIexpires\fR
.RS 4
timeout value (ktime_t)
.RE
.PP
\fIdelta\fR
.RS 4
slack in expires timeout (ktime_t)
.RE
.PP
\fImode\fR
.RS 4
timer mode, HRTIMER_MODE_ABS or HRTIMER_MODE_REL
.RE
.SH "DESCRIPTION"
.PP
Make the current task sleep until the given expiry time has elapsed\&. The routine will return immediately unless the current task state has been set (see
\fBset_current_state\fR)\&.
.PP
The
\fIdelta\fR
argument gives the kernel the freedom to schedule the actual wakeup to a time that is both power and performance friendly\&. The kernel give the normal best effort behavior for
\(lq\fIexpires\fR+\fIdelta\fR\(rq, but may decide to fire the timer earlier, but no earlier than
\fIexpires\fR\&.
.PP
You can set the task state as follows \-
.PP
\fBTASK_UNINTERRUPTIBLE\fR
\- at least
\fItimeout\fR
time is guaranteed to pass before the routine returns\&.
.PP
\fBTASK_INTERRUPTIBLE\fR
\- the routine may return early if a signal is delivered to the current task\&.
.PP
The current task state is guaranteed to be TASK_RUNNING when this routine returns\&.
.PP
Returns 0 when the timer has expired otherwise \-EINTR
.SH "COPYRIGHT"
.br