linux-kernel - Re: [PATCH] mm: vmstats: tlb flush counters

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Message-ID: <51E5DABC.3060104@sr71.net>
Date:	Tue, 16 Jul 2013 16:43:56 -0700
From:	Dave Hansen <dave@...1.net>
To:	Wanpeng Li <liwanp@...ux.vnet.ibm.com>
CC:	linux-kernel@...r.kernel.org, x86@...nel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: vmstats: tlb flush counters

On 07/16/2013 04:36 PM, Wanpeng Li wrote:
> On Tue, Jul 16, 2013 at 08:53:04AM -0700, Dave Hansen wrote:
>> I was investigating some TLB flush scaling issues and realized
>> that we do not have any good methods for figuring out how many
>> TLB flushes we are doing.
>>
>> It would be nice to be able to do these in generic code, but the
>> arch-independent calls don't explicitly specify whether we
>> actually need to do remote flushes or not.  In the end, we really
>> need to know if we actually _did_ global vs. local invalidations,
>> so that leaves us with few options other than to muck with the
>> counters from arch-specific code.
>>
>> Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
>>
> There is no context in the patch?

Weird.  I've attached another copy and I'll resent to the mailing list.

View attachment "tlb-vmstats.patch" of type "text/x-patch" (4666 bytes)