From: Arnaldo Carvalho de Melo <acme@redhat.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Matthew Wilcox <matthew@wil.cx>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-rt-users@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH][PCI]: Introduce pci_find_capability_cached and make MSI use it
Date: Fri, 16 May 2008 16:10:15 -0300 [thread overview]
Message-ID: <20080516191015.GB8111@ghostprotocols.net> (raw)
In-Reply-To: <200805161201.48644.jbarnes@virtuousgeek.org>
Em Fri, May 16, 2008 at 12:01:48PM -0700, Jesse Barnes escreveu:
> On Friday, May 16, 2008 11:33 am Arnaldo Carvalho de Melo wrote:
> > > There are a few other common cap checks, but I don't think they compare
> > > to MSI in terms of latency sensitivity (though I didn't audit all the
> > > CAP_ID_EXP checks, there are quite a few of those).
> > >
> > > Since we know MSI is a problem, let's just go with fixing that for now.
> > > If we find that other caps are also causing problems we can revisit
> > > caching all of them; the patch is simple enough.
> >
> > Do you want me to submit another patch or can you cook up one?
>
> I can hack it up, probably not until Monday though (I'll be out of town this
> weekend).
OK, for now this patch should be in the next rt patchset, we'll drop it
when you get The Right Thing merged 8)
- Arnaldo
next prev parent reply other threads:[~2008-05-16 19:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-15 16:04 [PATCH][PCI]: Introduce pci_find_capability_cached and make MSI use it Arnaldo Carvalho de Melo
2008-05-15 17:02 ` Arnaldo Carvalho de Melo
2008-05-15 17:04 ` Matthew Wilcox
2008-05-15 17:10 ` Arnaldo Carvalho de Melo
2008-05-16 17:44 ` Jesse Barnes
2008-05-16 18:33 ` Arnaldo Carvalho de Melo
2008-05-16 19:01 ` Jesse Barnes
2008-05-16 19:10 ` Arnaldo Carvalho de Melo [this message]
2008-05-19 4:48 ` [PATCH] msi: skip calling pci_find_capability from msi_set_mask_bits Hidetoshi Seto
2008-05-19 20:11 ` Jesse Barnes
2008-05-19 20:26 ` Arnaldo Carvalho de Melo
2008-05-20 19:56 ` Arnaldo Carvalho de Melo
2008-05-20 20:06 ` Jesse Barnes
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