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Date:      Fri, 20 Oct 2000 01:10:49 -0700 (PDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        John Baldwin <jhb@FreeBSD.org>, alpha@FreeBSD.org, ia64@FreeBSD.org
Cc:        cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject:   RE: cvs commit: src/sys/sys mutex.h src/sys/kern kern_mutex.c sr
Message-ID:  <XFMail.001020011049.jhb@FreeBSD.org>
In-Reply-To: <200010200726.AAA40906@freefall.freebsd.org>

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On 20-Oct-00 John Baldwin wrote:
> jhb         2000/10/20 00:26:37 PDT
> 
>   Modified files:
>     sys/kern             kern_mutex.c 
>     sys/i386/include     mutex.h 
>     sys/alpha/include    mutex.h 
>     sys/ia64/include     mutex.h 
>     sys/conf             files.alpha files.i386 files.ia64 
>                          files.pc98 options 
>   Added files:
>     sys/sys              mutex.h 
>   Removed files:
>     sys/i386/i386        synch_machdep.c 
>     sys/alpha/alpha      synch_machdep.c 
>     sys/ia64/ia64        synch_machdep.c 
>   Log:
>   - Make the mutex code almost completely machine independent.  This greatly
>     reducues the maintenance load for the mutex code.  The only MD portions
>     of the mutex code are in machine/mutex.h now, which include the assembly
>     macros for handling mutexes as well as optionally overriding the mutex
>     micro-operations.  For example, we use optimized micro-ops on the x86
>     platform #ifndef I386_CPU.

WARNING: I haven't directly tested this on the alpha, or on the ia64,
although it has been running for the past week or so on x86.  However,
I did test to make sure that the atomic.h changes that make all this
possible did compile fine on the alpha.  Also, the code is MI, so in
theory the architecture shouldn't matter.  I'll be testing a remote
alpha kernel build in the very near future, but this is just a heads up
to watch your step on non-x86. :)

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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