threads/89262: [kernel] [patch] multi-threaded process hangs
in kernel in fork()
David Xu
davidxu at freebsd.org
Mon Feb 13 21:00:34 PST 2006
The following reply was made to PR threads/89262; it has been noted by GNATS.
From: David Xu <davidxu at freebsd.org>
To: John Baldwin <jhb at freebsd.org>
Cc: bug-followup at freebsd.org, garry at networkphysics.com
Subject: Re: threads/89262: [kernel] [patch] multi-threaded process hangs
in kernel in fork()
Date: Tue, 14 Feb 2006 12:51:56 +0800
John Baldwin wrote:
> Only thing I would prefer is that you keep sleepq_catch_signals() but make it
> an internal function that sleepq_waitsig() and sleepq_timed_waitsig() call
> before sleepq_switch() so that sleepq_switch() doesn't get so long. Also, it
> would be good. Also, in sleepq_switch() you are using sleepq_release() and
> sleepq_lock() even though you already have a sleepqueue_chain pointer, and
> you do mtx operations on sc->sc_lock explicitly in some other places. It
> would be best to consistently just do mutex ops on sc->sc_lock instead of
> redoing the hash-lookup several times.
>
patch updated:
http://people.freebsd.org/~davidxu/patch/slpq_susp5.patch
More information about the freebsd-threads
mailing list