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Date:      Tue, 05 Mar 2002 10:51:52 -0500 (EST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Jeff Roberson <jeff@FreeBSD.org>
Cc:        cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject:   RE: cvs commit: src/sys/sys smp.h src/sys/kern subr_smp.c src/sy
Message-ID:  <XFMail.020305105152.jhb@FreeBSD.org>
In-Reply-To: <200203051001.g25A1kK87489@freefall.freebsd.org>

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On 05-Mar-02 Jeff Roberson wrote:
> jeff        2002/03/05 02:01:46 PST
> 
>   Modified files:
>     sys/sys              smp.h 
>     sys/kern             subr_smp.c 
>     sys/i386/i386        mp_machdep.c 
>     sys/alpha/alpha      mp_machdep.c 
>   Log:
>   Add a new variable mp_maxid.  This is used so that per cpu datastructures
> may
>   be allocated as arrays indexed by the cpu id.  Previously the only reliable
>   way to know the max cpu id was through MAXCPU. mp_ncpus isn't useful here
>   because cpu ids may be sparsely mapped, although x86 and alpha do not do
> this.

Actually, alpha ID's can be sparse as they are just phyiscal ID's which are
tied to the slots the CPU's are in.

>   Also, call cpu_mp_probe much earlier so the max cpu id is known before the
> VM
>   starts up.  This is intended to help support per cpu queues for the new
>   allocator, but may be useful elsewhere.
>   
>   Reviewed by:    jake
>   Approved by:    jake
>   
>   Revision  Changes    Path
>   1.34      +2 -0      src/sys/alpha/alpha/mp_machdep.c
>   1.179     +4 -1      src/sys/i386/i386/mp_machdep.c
>   1.163     +14 -2     src/sys/kern/subr_smp.c
>   1.70      +1 -0      src/sys/sys/smp.h

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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