linux-kernel - RE: [PATCH 19/28] Drivers: hv: Add code to distribute channel interrupt load

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Date:	Thu, 17 Jan 2013 21:28:55 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>
Subject: RE: [PATCH 19/28] Drivers: hv: Add code to distribute channel
 interrupt load



> -----Original Message-----
> From: Greg KH [mailto:gregkh@...uxfoundation.org]
> Sent: Thursday, January 17, 2013 2:39 PM
> To: KY Srinivasan
> Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org; olaf@...fle.de;
> apw@...onical.com; jasowang@...hat.com
> Subject: Re: [PATCH 19/28] Drivers: hv: Add code to distribute channel interrupt
> load
> 
> On Sat, Dec 01, 2012 at 06:46:50AM -0800, K. Y. Srinivasan wrote:
> > +/*
> > + * This is an array of channels (devices) that are performance critical.
> > + * We attempt to distribute the interrupt load for these devices across
> > + * all available CPUs.
> > + */
> > +static const uuid_le hp_devs[] = {
> > +	/* {32412632-86cb-44a2-9b5c-50d1417354f5} */
> > +	/* IDE */
> > +	{
> > +		.b = {
> > +			0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
> > +			0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5
> > +		}
> > +	},
> > +	/* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */
> > +	/* Storage - SCSI */
> > +	{
> > +		.b  = {
> > +			0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d,
> > +			0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f
> > +		}
> > +	},
> > +	/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
> > +	/* Network */
> > +	{
> > +		.b = {
> > +			0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46,
> > +			0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E
> > +		}
> > +	},
> > +
> > +};
> 
> You are now duplicating these "ids" in different places in the kernel,
> perhaps you should put them in one place (hyperv.h?) and then reference
> them that way?  It's like a device id for pci, once you use it in two
> places, it goes into pci_ids.h.
> 
> I'm not going to reject this patch, but can you please do this in a
> follow-on patch?

Thanks Greg. Will do.

Regards,

K. Y

> 
> thanks,
> 
> greg k-h
> 


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