From: Andi Kleen <andi@firstfloor.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <andi@firstfloor.org>,
andreas.herrmann3@amd.com, mingo@elte.hu,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [7/7] CPA: Add statistics about state of direct mapping v2
Date: Fri, 21 Mar 2008 18:55:38 +0100 [thread overview]
Message-ID: <20080321175538.GI2346@one.firstfloor.org> (raw)
In-Reply-To: <alpine.LFD.1.00.0803211822220.3781@apollo.tec.linutronix.de>
On Fri, Mar 21, 2008 at 06:41:59PM +0100, Thomas Gleixner wrote:
> On Wed, 12 Mar 2008, Andi Kleen wrote:
> > Add information about the mapping state of the direct mapping to
> > /proc/meminfo.
>
> Please use debugfs for this.
But it's not debugging. Or are you saying all memory state information
in /proc/meminfo is debugging information? I would say it is generic
memory state tracking, similar to VmallocUsed or Slab: or NFS_Unstable:
e.g. I would expect a machine to go slower if all direct mapping pages
are split due to increase TLB misses and that information is generally
useful and should not be forced into some debugging ghetto.
-Andi
next prev parent reply other threads:[~2008-03-21 17:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-12 2:53 [PATCH] [1/7] Implement true end_pfn_mapped for 32bit Andi Kleen
2008-03-12 2:53 ` [PATCH] [2/7] Account overlapped mappings in end_pfn_map Andi Kleen
2008-03-12 2:53 ` [PATCH] [3/7] Add set_memory_4k to pageattr.c Andi Kleen
2008-03-12 2:53 ` [PATCH] [4/7] Don't use large pages to map the first 2/4MB of memory Andi Kleen
2008-03-12 5:38 ` Eric Dumazet
2008-03-12 9:19 ` Andi Kleen
2008-03-21 17:45 ` Thomas Gleixner
2008-03-21 17:59 ` Andi Kleen
2008-03-21 18:03 ` Thomas Gleixner
2008-03-21 18:44 ` Andi Kleen
2008-03-25 11:31 ` Joerg Roedel
2008-03-25 11:39 ` Andi Kleen
2008-03-12 2:53 ` [PATCH] [5/7] Readd rdmsrl_safe Andi Kleen
2008-03-21 17:06 ` Thomas Gleixner
2008-03-21 17:16 ` Andi Kleen
2008-03-21 17:58 ` Thomas Gleixner
2008-03-21 18:06 ` Andi Kleen
2008-03-21 18:14 ` Thomas Gleixner
2008-03-21 18:46 ` Andi Kleen
2008-03-21 18:48 ` [PATCH] [5/7] Readd rdmsrl_safe II Andi Kleen
2008-03-22 9:59 ` [PATCH] Readd rdmsrl_safe v2 Andi Kleen
2008-03-12 2:53 ` [PATCH] [6/7] Split large page mapping for AMD TSEG Andi Kleen
2008-03-21 17:55 ` Thomas Gleixner
2008-03-25 11:56 ` Joerg Roedel
2008-03-25 16:44 ` Thomas Gleixner
2008-03-25 16:54 ` Andi Kleen
2008-03-12 2:53 ` [PATCH] [7/7] CPA: Add statistics about state of direct mapping v2 Andi Kleen
2008-03-21 17:41 ` Thomas Gleixner
2008-03-21 17:55 ` Andi Kleen [this message]
2008-03-22 9:50 ` [PATCH] CPA: Add statistics about state of direct mapping v3 Andi Kleen
2008-03-25 15:40 ` Thomas Gleixner
2008-03-25 16:14 ` Andi Kleen
2008-03-25 16:16 ` Thomas Gleixner
2008-03-25 17:01 ` [PATCH] CPA: Add statistics about state of direct mapping v4 Andi Kleen
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