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Comparing trunk/share/man/man4/ktr.4 (file contents):
Revision 11733 by laffer1, Sat Dec 28 14:36:42 2013 UTC vs.
Revision 11734 by laffer1, Mon Jul 9 23:26:56 2018 UTC

# Line 1 | Line 1
1 + .\" $MidnightBSD$
2   .\" Copyright (c) 2001 John H. Baldwin <jhb@FreeBSD.org>
3   .\" All rights reserved.
4   .\"
# Line 22 | Line 23
23   .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24   .\" SUCH DAMAGE.
25   .\"
26 < .\" $MidnightBSD$
26 > .\" $FreeBSD: stable/10/share/man/man4/ktr.4 243437 2012-11-23 08:44:36Z kevlo $
27   .\"
28 < .Dd January 25, 2005
28 > .Dd October 20, 2012
29   .Dt KTR 4
30   .Os
31   .Sh NAME
# Line 52 | Line 53 | is
53   The
54   .Dv KTR_ENTRIES
55   option sets the size of the buffer of events.
55 – It must be a power of two.
56   The size of the buffer in the currently running kernel can be found via the
57 < read-only sysctl
57 > sysctl
58   .Va debug.ktr.entries .
59   By default the buffer contains 1024 entries.
60   .Ss Event Masking
# Line 78 | Line 78 | environment variable.
78   It can also be examined and set after booting via the
79   .Va debug.ktr.mask
80   sysctl.
81 < By default the run time mask is set to log only
82 < .Dv KTR_GEN
83 < events.
81 > By default the run time mask is set to block any tracing.
82   The definitions of the event mask bits can be found in
83   .In sys/ktr.h .
84   .Pp
# Line 88 | Line 86 | Furthermore, there is a CPU event mask whose default v
86   the
87   .Dv KTR_CPUMASK
88   option.
89 + When two or more parameters to
90 + .Dv KTR_CPUMASK ,
91 + are used, it is important they are not separated by whitespace.
92   A CPU must have the bit corresponding to its logical id set in this bitmask
93   for events that occur on it to be logged.
94   This mask can be set by the
# Line 98 | Line 99 | environment variable.
99   It can also be examined and set after booting via the
100   .Va debug.ktr.cpumask
101   sysctl.
102 < By default events on all CPUs are enabled.
102 > By default, only CPUs specified in
103 > .Dv KTR_CPUMASK
104 > will log events.
105 > See
106 > .Pa sys/conf/NOTES
107 > for more information.
108   .Ss Verbose Mode
109   By default, events are only logged to the internal buffer for examination
110   later, but if the verbose flag is set then they are dumped to the kernel

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