Date: Tue, 23 Jun 2009 21:33:26 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern tty.c Message-ID: <200906232133.n5NLXgAT073386@repoman.freebsd.org>
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ed 2009-06-23 21:33:26 UTC
FreeBSD src repository
Modified files:
sys/kern tty.c
Log:
SVN rev 194769 on 2009-06-23 21:33:26Z by ed
Use dcdwait to block threads to serialize writes.
I suspect the usage of bgwait causes a lot of spurious wakeups when
threads are blocked in the background, because they will be woken up
each time a write() call is performed.
Also wakeup dcdwait when the TTY is abandoned.
Revision Changes Path
1.325 +3 -2 src/sys/kern/tty.c
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