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	.\" SUCH DAMAGE.			.\" SUCH DAMAGE.
	.\"			.\"
	.Dd November 23, 2020			.Dd November 23, 2020
	.Dt _UMTX_OP 2			.Dt _UMTX_OP 2
	.Os			.Os
	.Sh NAME			.Sh NAME
	.Nm _umtx_op			.Nm _umtx_op
	.Nd interface for implementation of userspace threading synchronization primitives			.Nd interface for implementation of userspace threading synchronization primitives
	.Sh LIBRARY
	.Lb libc
	.Sh SYNOPSIS			.Sh SYNOPSIS
				.Lb libc
	.In sys/types.h			.In sys/types.h
	.In sys/umtx.h			.In sys/umtx.h
	.Ft int			.Ft int
	.Fn _umtx_op "void obj" "int op" "u_long val" "void uaddr" "void *uaddr2"			.Fn _umtx_op "void obj" "int op" "u_long val" "void uaddr" "void *uaddr2"
	.Sh DESCRIPTION			.Sh DESCRIPTION
	The			The
	.Fn _umtx_op			.Fn _umtx_op
	system call provides kernel support for userspace implementation of			system call provides kernel support for userspace implementation of
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