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+.\" Hey Emacs! This file is -*- nroff -*- source.
+.\"
+.\" This manpage is Copyright (C) 2003 Matthew Wilcox
+.\"
+.\" Permission is granted to make and distribute verbatim copies of this
+.\" manual provided the copyright notice and this permission notice are
+.\" preserved on all copies.
+.\"
+.\" Permission is granted to copy and distribute modified versions of this
+.\" manual under the conditions for verbatim copying, provided that the
+.\" entire resulting derived work is distributed under the terms of a
+.\" permission notice identical to this one.
+.\" 
+.\" Since the Linux kernel is constantly changing, this manual page may
+.\" be incorrect or out-of-date.  The author(s) assume no responsibility
+.\" for errors or omissions, or for damages resulting from the use of the
+.\" information contained herein.
+.\" 
+.\" Formatted or processed versions of this manual, if unaccompanied by
+.\" the source, must acknowledge the copyright and authors of this work.
+.\"
+.TH KSOFTIRQD 9 2003-08-24 "Linux 2.6.0" "Linux Programmer's Manual"
+.SH NAME
+ksoftirqd \- Softirq daemon
+.SH DESCRIPTION
+.B ksoftirqd
+is a per-cpu kernel thread that runs when the machine is under heavy
+soft-interrupt load.  Soft interrupts are normally serviced on return from
+a hard interrupt, but it's possible for soft interrupts to be triggered
+more quickly than they can be serviced.  If a soft interrupt is triggered
+for a second time while soft interrupts are being handled, the
+.B ksoftirq
+daemon is triggered to handle the soft interrupts in process context.
+If
+.B ksoftirqd
+is taking more than a tiny percentage of CPU time, this indicates the
+machine is under heavy soft interrupt load.
+.SH HISTORY
+.B ksoftirqd
+was introduced during the 2.3 development series as part of the
+softnet work by Alexey Kuznetsov and David Miller.