Date: Tue, 5 Jun 2007 15:11:54 -0400 From: John Baldwin <jhb@freebsd.org> To: Attilio Rao <attilio@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/kern kern_mutex.c Message-ID: <200706051511.56553.jhb@freebsd.org> In-Reply-To: <200706051857.l55IvAYP094328@repoman.freebsd.org> References: <200706051857.l55IvAYP094328@repoman.freebsd.org>
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On Tuesday 05 June 2007 02:57:09 pm Attilio Rao wrote: > attilio 2007-06-05 18:57:09 UTC > > FreeBSD src repository > > Modified files: > sys/kern kern_mutex.c > Log: > Fix a problem with not-preemptive kernels caming from mis-merging of > existing code with the new thread_lock patch. > This also cleans up a bit unlock operation for mutexes. > > Approved by: jhb, jeff(mentor) Specifically, this retires the explicit preemption code in mtx_unlock() (inherited from BSD/OS) in the #ifndef PREEMPTION case. We now only do preemptions as a scheduling decision in the scheduler and only #ifdef PREEMPTION. -- John Baldwin
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