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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.64.0704091144270.8783@schroedinger.engr.sgi.com>
Date:	Mon, 9 Apr 2007 11:46:14 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Andi Kleen <ak@...e.de>
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 Mon, 9 Apr 2007, Andi Kleen wrote:

> 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)?

It has to be done in sync with tlb flushing. Doing that on memory pressure 
would complicate things significantly. Also idling means that the cache 
grows cold.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/