linux-kernel - Re: [PATCH 0/8] cpumask: Replace/optimize cpumask_of_cpu & cpumask

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Date:	Fri, 18 Jul 2008 22:04:58 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Jack Steiner <steiner@....com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/8] cpumask: Replace/optimize cpumask_of_cpu &
	cpumask_t operations


* Mike Travis <travis@....com> wrote:

>   * Patch 1 replaces the dangerous lvalue version of cpumask_of_cpu
>     with new cpumask_of_cpu_ptr macros.  These are patterned after the
>     node_to_cpumask_ptr macros.
> 
>   * Patches 2..6 optimizes various places where a pointer to the cpumask_of_cpu
>     value will result in reducing stack pressure.
> 
>   * Patch 7 provides a generic set of CPUMASK_ALLOC macros patterned after
>     the SCHED_CPUMASK_ALLOC macros.  This is used where multiple cpumask_t
>     variables are declared on the stack to reduce the amount of stack space
>     required.
> 
>   * Patch 8 uses the CPUMASK_ALLOC macros in the centrino_target() function.

applied to tip/cpus4096 for more testing, thanks Mike.

	Ingo
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