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document the recent change to debug.witness.*

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fix spelling of debug.witness.kdb

MFC after:	5 days
This commit is contained in:
John-Mark Gurney 2004-09-06 23:37:17 +00:00
parent 80e6bbe95b
commit d698cdb301
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=134874
2 changed files with 9 additions and 4 deletions
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5
UPDATING
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@ -23,6 +23,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW:
developers choose to disable these features on build machines
to maximize performance.
20040906:
debug.witness_* has been renamed to debug.witness.*. There are
compatibility tunables left in for a few days. Update loader.conf
as necessary.
20040902:
The ifi_epoch change has been reverted because the ABI breakage
was too extensive. If you are running with a kernel/userland

8
share/man/man4/witness.4
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@ -68,9 +68,9 @@ specified, then the flag will default to on.
It can also be set from the
.Xr loader 8
via the
.Va debug.witness_ddb
.Va debug.witness.kdb
environment variable or after the kernel has booted via the
.Va debug.witness_ddb
.Va debug.witness.kdb
sysctl.
If the flag is set to zero, then the debugger will not be entered.
If the flag is non-zero, then the debugger will be entered.
@ -85,11 +85,11 @@ kernel option.
The flag can also be set via the
.Xr loader 8
environment variable
.Va debug.witness_skipspin .
.Va debug.witness.skipspin .
If the variable is set to a non-zero value, then spin mutexes are skipped.
Once the kernel has booted, the status of this flag can be examined but not
set via the read-only sysctl
.Va debug.witness_skipspin .
.Va debug.witness.skipspin .
.Pp
The
.Nm