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Update ktr(4) to reflect changes from r239923.

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Reviewed by:	attilio
This commit is contained in:
Glen Barber 2012-10-20 23:13:09 +00:00
parent 9e0a344174
commit 16a7f9e2bd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=241791
1 changed files with 10 additions and 2 deletions
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12
share/man/man4/ktr.4
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 19, 2012
.Dd October 20, 2012
.Dt KTR 4
.Os
.Sh NAME
@ -85,6 +85,9 @@ Furthermore, there is a CPU event mask whose default value can be changed via
the
.Dv KTR_CPUMASK
option.
When two or more parameters to
.Dv KTR_CPUMASK ,
are used, it is important they are not separated by whitespace.
A CPU must have the bit corresponding to its logical id set in this bitmask
for events that occur on it to be logged.
This mask can be set by the
@ -95,7 +98,12 @@ environment variable.
It can also be examined and set after booting via the
.Va debug.ktr.cpumask
sysctl.
By default events on all CPUs are enabled.
By default, only CPUs specified in
.Dv KTR_CPUMASK
will log events.
See
.Pa sys/conf/NOTES
for more information.
.Ss Verbose Mode
By default, events are only logged to the internal buffer for examination
later, but if the verbose flag is set then they are dumped to the kernel