From: Christoph Hellwig <hch@infradead.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] arch/ia64/sn: SGI Altix hardware performance monitoring API
Date: Fri, 10 Sep 2004 07:42:07 +0000 [thread overview]
Message-ID: <20040910084207.D21519@infradead.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0409101641020.17255-100000@woolami.melbourne.sgi.com>
On Fri, Sep 10, 2004 at 05:05:31PM +1000, Mark Goodwin wrote:
>
> The SGI Altix PROM supports a SAL call for performance monitoring and for
> exporting NUMA topology. We need this in community kernels for diagnostic
> and performance tools to use, especially on very large machines.
>
> This patch registers a dynamic misc device "sn_hwperf" that supports an
> ioctl interface for reading/writing memory mapped registers on Altix
> nodes and routers via the new SAL call. It also creates a read-only
> procfs file "/proc/sgi_sn/sn_topology" to export NUMA topology and Altix
> hardware inventory.
>
> Any review/comments most welcome .. thanks
What tools are using this? Might be worse to put an url to the source
package into the Kconfig entry.
next prev parent reply other threads:[~2004-09-10 7:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-10 7:05 [PATCH] arch/ia64/sn: SGI Altix hardware performance monitoring API Mark Goodwin
2004-09-10 7:42 ` Christoph Hellwig [this message]
2004-09-10 9:40 ` [PATCH] arch/ia64/sn: SGI Altix hardware performance monitoring Mark Goodwin
2004-09-20 15:16 ` [PATCH] arch/ia64/sn: SGI Altix hardware performance monitoring API Christoph Hellwig
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