linux-kernel - Re: [QUICKLIST 3/4] Quicklist support for x86

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Message-Id: <200704092043.14335.ak@suse.de>
Date:	Mon, 9 Apr 2007 20:43:14 +0200
From:	Andi Kleen <ak@...e.de>
To:	Christoph Lameter <clameter@....com>
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [QUICKLIST 3/4] Quicklist support for x86_64

On Monday 09 April 2007 20:25:20 Christoph Lameter wrote:

>  #endif /* _X86_64_PGALLOC_H */
> Index: linux-2.6.21-rc5-mm4/arch/x86_64/kernel/process.c
> ===================================================================
> --- linux-2.6.21-rc5-mm4.orig/arch/x86_64/kernel/process.c	2007-04-07 18:07:47.000000000 -0700
> +++ linux-2.6.21-rc5-mm4/arch/x86_64/kernel/process.c	2007-04-07 18:09:30.000000000 -0700
> @@ -207,6 +207,7 @@
>  			if (__get_cpu_var(cpu_idle_state))
>  				__get_cpu_var(cpu_idle_state) = 0;
>  
> +			check_pgt_cache();

Wouldn't it be better to do that on memory pressure only (register
it as a shrinker)?

>  		rmb();
>  			idle = pm_idle;
>  			if (!idle)
> Index: linux-2.6.21-rc5-mm4/arch/x86_64/kernel/smp.c
> ===================================================================
> --- linux-2.6.21-rc5-mm4.orig/arch/x86_64/kernel/smp.c	2007-04-07 18:07:47.000000000 -0700
> +++ linux-2.6.21-rc5-mm4/arch/x86_64/kernel/smp.c	2007-04-07 18:09:30.000000000 -0700
> @@ -241,7 +241,7 @@
>  	}
>  	if (!cpus_empty(cpu_mask))
>  		flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
> -
> +	check_pgt_cache();

Why is that here?

>  	preempt_enable();
>  }


-Andi
-
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