1.\" 2.\" Copyright (c) 2003,2004 The DragonFly Project. All rights reserved. 3.\" 4.\" This code is derived from software contributed to The DragonFly Project 5.\" by Matthew Dillon <dillon@backplane.com> 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in 15.\" the documentation and/or other materials provided with the 16.\" distribution. 17.\" 3. Neither the name of The DragonFly Project nor the names of its 18.\" contributors may be used to endorse or promote products derived 19.\" from this software without specific, prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" $DragonFly: src/usr.bin/pctrack/pctrack.8,v 1.4 2006/07/22 18:49:25 swildner Exp $ 35.\" 36.Dd June 8, 2006 37.Dt PCTRACK 8 38.Os 39.Sh NAME 40.Nm pctrack 41.Nd print kernel system/interrupt PC sampling history 42.Sh SYNOPSIS 43.Nm 44.Op Fl fnsi 45.Op Fl c Ar cpu 46.Op Fl N Ar execfile 47.Op Fl M Ar corefile 48.Op Ar interval 49.Sh DESCRIPTION 50Kernels compiled with 51.Dv DEBUG_PCTRACK 52record the program counter (PC) of 53the code interrupted by the statistics clock interrupt. 54This information can be dumped with the 55.Nm 56utility 57.Pp 58The following options are available: 59.Bl -tag -width ".Fl N Ar execfile" 60.It Fl c Ar cpu 61Specify which CPU to dump. If not specified, all CPUs will be dumped. 62.It Fl f 63If a single CPU and either 64.Fl i 65or 66.Fl s 67is specified, this option will use the repeat interval to detect changes 68and dump them as they occur. 69.It Fl i 70Dump the interrupt tracking buffer. 71.It Fl s 72Dump the kernel tracking buffer. 73If neither 74.Fl i 75or 76.Fl s 77is specified, both tracking buffers will be dumped. 78.It Fl n 79.Nm 80normally tries to translate the PC into symbols. This option forces hex 81values to be displayed instead. 82.It Fl N Ar execfile 83The kernel image to resolve symbols from. 84The default is the value returned via 85.Xr getbootfile 3 . 86.It Fl M Ar corefile 87The core file or memory image to read from. 88The default is 89.Pa /dev/mem . 90.El 91.\".Sh OPERATIONAL NOTES 92.Sh HISTORY 93The 94.Nm 95utility first appeared in 96.Dx 1.5 . 97.Sh AUTHORS 98.An -nosplit 99The 100.Nm 101utility was originally implemented by 102.An Matthew Dillon 103for 104.Dx . 105