Re-enable module build for POSIX semaphores.
Update the manual page describe loading the sem module. Approved by: silence on -arch and -standards
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=164189
@ -24,19 +24,26 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 14, 2003
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.Dd November 11, 2006
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.Dt SEM 4
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.Os
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.Sh NAME
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.Nm sem
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.Nd POSIX semaphores
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.Sh SYNOPSIS
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To link into the kernel:
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "options P1003_1B_SEMAPHORES"
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.Ed
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.Pp
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To load as a kernel loadable module:
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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sem_load="YES"
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.Ed
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.Pp
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.Dl "kldload sem"
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.Sh DESCRIPTION
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@ -47,6 +54,10 @@ facility provides system calls used by the standard C library
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to implement
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.Tn POSIX
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semaphores.
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This facility offers support for such functions as
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.Fn sem_init
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and
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.Fn sem_wait .
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It is available both as a kernel option for static inclusion and as a
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dynamic kernel module.
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.Sh SEE ALSO
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@ -219,6 +219,7 @@ SUBDIR= ${_3dfx} \
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scc \
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scd \
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${_scsi_low} \
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sem \
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sf \
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${_sio} \
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sis \
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