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Add documentation for CTLFLAG_MPSAFE.

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This commit is contained in:
Warner Losh 2018-03-04 03:13:13 +00:00
parent 337981bd89
commit 982a973ebe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=330368
1 changed files with 6 additions and 1 deletions
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7
share/man/man9/sysctl.9
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@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 10, 2017
.Dd March 3, 2018
.Dt SYSCTL 9
.Os
.Sh NAME
@ -662,6 +662,11 @@ this flag will prevent fetching the initial value from the system
environment.
Typically this flag should only be used for very early
low level system setup code, and not by common drivers and modules.
.It Dv CTLFLAG_MPSAFE
This
.Xr sysctl 9
handler is MP safe.
Do not grab Giant around calls to this handler.
.El
.Pp
Additionally, any of the following optional flags may also be specified: