linux-kernel - Re: [PATCH 4/4] x86/gart: Tidy messages and add bridge device info

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Message-ID: <20140507180040.GA17329@gmail.com>
Date:	Wed, 7 May 2014 20:00:40 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	David Airlie <airlied@...ux.ie>, Bodo Eggert <7eggert@....de>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] x86/gart: Tidy messages and add bridge device info


* Bjorn Helgaas <bhelgaas@...gle.com> wrote:

> On Sat, Apr 26, 2014 at 12:01 AM, Ingo Molnar <mingo@...nel.org> wrote:
> >
> > * Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> >
> >> Print the AGP bridge info the same way as the rest of the kernel, e.g.,
> >> "0000:00:04.0" instead of "00:04:00".
> >>
> >> Also print the AGP aperture address range the same way we print resources,
> >> and label it explicitly as a bus address range.
> >>
> >> No functional change.
> >>
> >> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
> >> ---
> >>  arch/x86/kernel/aperture_64.c |   20 ++++++++++++--------
> >>  1 file changed, 12 insertions(+), 8 deletions(-)
> >>
> >> diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
> >> index 9fa8aa051f54..4dd76d3df056 100644
> >> --- a/arch/x86/kernel/aperture_64.c
> >> +++ b/arch/x86/kernel/aperture_64.c
> >> @@ -126,10 +126,12 @@ static u32 __init read_agp(int bus, int slot, int func, int cap, u32 *order)
> >>       u64 aper;
> >>       u32 old_order;
> >>
> >> -     printk(KERN_INFO "AGP bridge at %02x:%02x:%02x\n", bus, slot, func);
> >> +     printk(KERN_INFO "pci 0000:%02x:%02x.%d: AGP bridge\n", bus, slot,
> >> +            func);
> >
> > Please leave it on a single line - checkpatch warning nonwithstanding.
> > pr_info() is also useful.
> > ...
> 
> > Also, you could add:
> >
> > #define PREFIX "PCI/gart: "
> >
> > or something like that, to define a standard prefix for these
> > messages.
> 
> I converted to pr_info(), etc. and added pr_fmt for an "AGP: " prefix.
> 
> > Btw., this file could be moved to arch/x86/pci/?
> 
> Yes, I'd be glad to do this.  It looks like all the following files
> might be candidates:
> 
>   amd_gart_64.c  (CONFIG_GART_IOMMU)
>   aperture_64.c  (CONFIG_GART_IOMMU)
>   pci-calgary_64.c  (CONFIG_CALGARY_IOMMU)
>   tce_64.c  (CONFIG_CALGARY_IOMMU)
>   mmconf-fam10h_64.c  (CONFIG_PCI_MMCONFIG)
> 
> What do you think?  Move all, move none, move only aperture_64.c?
> 
> Thanks for your comments!

Please move all of them, they are really 95% PCI bits:

  Acked-by: Ingo Molnar <mingo@...nel.org>

Thanks,

	Ingo
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