.\" Copyright (C) 1994, 1995, Daniel Quinlan .\" Copyright (C) 2002-2008, 2017, Michael Kerrisk .\" Copyright (C) 2023, Alejandro Colomar .\" .\" SPDX-License-Identifier: GPL-3.0-or-later .\" .TH proc_pid_wchan 5 2023-08-15 "Linux man-pages 6.06" .SH NAME /proc/pid/wchan \- wait channel .SH DESCRIPTION .TP .IR /proc/ pid /wchan " (since Linux 2.6.0)" The symbolic name corresponding to the location in the kernel where the process is sleeping. .IP Permission to access this file is governed by a ptrace access mode .B PTRACE_MODE_READ_FSCREDS check; see .BR ptrace (2). .SH SEE ALSO .BR proc (5)