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From: Mike Travis <travis@sgi.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	rpurdie@rpsys.net, Jack Steiner <steiner@sgi.com>,
	linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 1/1] SGI X86 UV: Provide a System Activity Indicator	driver
Date: Mon, 22 Sep 2008 07:47:37 -0700	[thread overview]
Message-ID: <48D7B009.7090700@sgi.com> (raw)
In-Reply-To: <20080922114820.GA13990@elte.hu>

Ingo Molnar wrote:
> * Mike Travis <travis@sgi.com> wrote:
> 
>>  arch/x86/kernel/genx2apic_uv_x.c |  138 +++++++++++++++++++++++++++++++++++++++
>>  include/asm-x86/uv/uv_hub.h      |   62 +++++++++++++++++
> 
> hm, why is this in genx2apic_uv_x.c, not a separate file?

This keeps it in the uv_hub percpu area, a chunk of memory that is accessed
quite often for many of the basic UV operations.  This should increase the
probability that the data is already located in the cpu's cache.

Thanks,
Mike


  parent reply	other threads:[~2008-09-22 14:47 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-19 14:37 [PATCH 0/1] SGI X86 UV: Provide a System Activity Indicator driver Mike Travis
2008-09-19 14:37 ` [PATCH 1/1] " Mike Travis
2008-09-22 11:48   ` Ingo Molnar
2008-09-22 14:42     ` Mike Travis
2008-09-28 19:42       ` Pavel Machek
2008-10-01 18:15         ` Mike Travis
2008-10-01 19:41           ` Mike Travis
2008-10-02  8:37           ` Pavel Machek
2008-10-02 14:33             ` Mike Travis
2008-09-22 14:47     ` Mike Travis [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-10-24 11:19 Mike Travis
2008-10-24 12:01 ` Pavel Machek
2008-10-24 12:05   ` Ingo Molnar
2008-10-24 12:27     ` Mike Travis
2008-10-24 18:12       ` Andi Kleen
2008-10-24 22:18         ` Mike Travis
2008-10-24 22:24           ` Mike Travis
2008-10-27 11:42             ` Ingo Molnar
2008-10-27 14:38               ` Mike Travis
2008-10-25  6:56           ` Andi Kleen
2008-10-27 15:12             ` Mike Travis
2008-10-27 11:36           ` Ingo Molnar
2008-10-27 11:43       ` Ingo Molnar
2008-10-24 12:14   ` Mike Travis

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