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From: David Mosberger <davidm@napali.hpl.hp.com>
To: Jack Steiner <steiner@sgi.com>
Cc: davidm@hpl.hp.com, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] - Reduce TLB flushing during process migration
Date: Wed, 7 Jul 2004 11:30:01 -0700	[thread overview]
Message-ID: <16620.16681.811228.597631@napali.hpl.hp.com> (raw)
In-Reply-To: <20040707154800.GA17818@sgi.com>

>>>>> On Wed, 7 Jul 2004 10:48:00 -0500, Jack Steiner <steiner@sgi.com> said:

  Jack> As far as the tlb_migrate patch is concerned, the change to
  Jack> the way machvec noop functions are implemented is mostly
  Jack> unrelated to the tlb_migrate patch. We can apply the patches
  Jack> in 2 ways:

  Jack> - change machvec noop functions
  Jack> - rework the tlb_migrate patch on top of that change

  Jack> OR

  Jack> - apply the tlb_migrate patch in it's current form
  Jack> - change the machvec noop functions including the tlb_migrate noop

  Jack> Either works. I'm partial to #2 (easier) but will do either....

I'd be ok with #2 except that if we do it that way, I bet that we'll
forget about changing the machvec noop functions... ;-)

  Jack> Note: calling a noop function after an explicit process
  Jack> migration is untidy but is not a measurable performance
  Jack> problem. I agree, however, that the noop function should be
  Jack> improved. At some point in the future, other noop functions
  Jack> may be added that ARE performance sensitive. It is good to
  Jack> have the correct infrastructure implemented.

Precisely.

	--david

  reply	other threads:[~2004-07-07 18:30 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-23 14:38 [PATCH] - Reduce TLB flushing during process migration Jack Steiner
2004-06-23 21:33 ` Andrew Morton
2004-06-24 12:55   ` Jack Steiner
2004-06-24 18:44     ` Andrew Morton
2004-06-25 14:23       ` Jack Steiner
2004-06-26  5:10   ` David Mosberger
2004-07-02 17:39     ` Jack Steiner
2004-07-07  0:01       ` David Mosberger
2004-07-07 13:52         ` John Richard Moser
2004-07-07 15:48         ` Jack Steiner
2004-07-07 18:30           ` David Mosberger [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-07-11 13:47 Jack Steiner
2004-07-12 21:28 ` David Mosberger

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