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Date:      Wed, 29 Apr 2009 16:43:50 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
To:        Jeff Roberson <jeff@FreeBSD.org>
Cc:        svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org
Subject:   Re: svn commit: r191643 - in head/sys: kern sys
Message-ID:  <20090429164314.F15361@maildrop.int.zabbadoz.net>
In-Reply-To: <200904290315.n3T3FiJW067558@svn.freebsd.org>
References:  <200904290315.n3T3FiJW067558@svn.freebsd.org>

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On Wed, 29 Apr 2009, Jeff Roberson wrote:

> Author: jeff
> Date: Wed Apr 29 03:15:43 2009
> New Revision: 191643
> URL: http://svn.freebsd.org/changeset/base/191643
>
> Log:
>   - Remove the bogus idle thread state code.  This may have a race in it
>     and it only optimized out an ipi or mwait in very few cases.
>   - Skip the adaptive idle code when running on SMT or HTT cores.  This
>     just wastes cpu time that could be used on a busy thread on the same
>     core.
>   - Rename CG_FLAG_THREAD to CG_FLAG_SMT to be more descriptive.  Re-use
>     CG_FLAG_THREAD to mean SMT or HTT.
>
>  Sponsored by:   Nokia

I think it was this of your commits that broke various kernels on
ia64, arm, powerpc, ..


-- 
Bjoern A. Zeeb                      The greatest risk is not taking one.



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