From: Arthur Kepner <akepner@sgi.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH] mlx4_core: module param to limit msix vec allocation
Date: Fri, 3 Sep 2010 13:30:44 -0700 [thread overview]
Message-ID: <20100903203044.GN2464@sgi.com> (raw)
In-Reply-To: <20100826.122407.260097270.davem@davemloft.net>
On Thu, Aug 26, 2010 at 12:24:07PM -0700, David Miller wrote:
> ....
> And what the heck happens if every single device driver tries to
> handle this problem in the same way? It makes no sense to make
> the user specify N special module parameters just to get a working
> system using MSI-X.
>
> This must be fixed in a centralized way that allows coordination
> between devices which compete for MSI-X vector resources, rather than
> in a way that is specific to each and every device type.
>
OK, how about this. Each time the kernel assigns a default
affinity for an interrupt, it generates a netlink message,
and a user-level interrupt balancer can decide whether and
how to reassign the interrupt?
I have that running on a (very small) system and it seems to
work OK. Will send out the patch in just a minute.
--
Arthur
next prev parent reply other threads:[~2010-09-03 20:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-26 17:06 [PATCH] mlx4_core: module param to limit msix vec allocation Arthur Kepner
2010-08-26 19:24 ` David Miller
2010-09-03 20:30 ` Arthur Kepner [this message]
2010-09-03 21:46 ` David Miller
2010-09-03 22:13 ` Arthur Kepner
2010-09-04 2:30 ` David Miller
2010-09-06 17:42 ` Arthur Kepner
2010-09-06 19:51 ` David Miller
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