Date: Wed, 1 Sep 2010 19:50:03 +0000 (UTC) From: Max Laier <mlaier@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/share/man/man9 Makefile locking.9 rmlock.9 src/sys/kern kern_rmlock.c src/sys/sys _rmlock.h rmlock.h Message-ID: <201009011950.o81JouTn029257@repoman.freebsd.org>
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mlaier 2010-09-01 19:50:03 UTC
FreeBSD src repository
Modified files:
share/man/man9 Makefile locking.9 rmlock.9
sys/kern kern_rmlock.c
sys/sys _rmlock.h rmlock.h
Log:
SVN rev 212112 on 2010-09-01 19:50:03Z by mlaier
rmlock(9) two additions and one change/fix:
- add rm_try_rlock().
- add RM_SLEEPABLE to use sx(9) as the back-end lock in order to sleep while
holding the write lock.
- change rm_noreadtoken to a cpu bitmask to indicate which CPUs need to go
through the lock/unlock in order to synchronize. As a side effect, this
also avoids IPI to CPUs without any readers during rm_wlock.
Discussed with: ups@, rwatson@ on arch@
Sponsored by: Isilon Systems, Inc.
Revision Changes Path
1.373 +1 -0 src/share/man/man9/Makefile
1.22 +8 -1 src/share/man/man9/locking.9
1.6 +28 -2 src/share/man/man9/rmlock.9
1.12 +90 -37 src/sys/kern/kern_rmlock.c
1.2 +7 -3 src/sys/sys/_rmlock.h
1.5 +14 -8 src/sys/sys/rmlock.h
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