linux-kernel - Re: [Xen-devel] [PATCH 4/5] xen/pciback: Expand the warning message to include domain id.

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Message-ID: <20120106221927.GA10248@phenom.dumpdata.com>
Date:	Fri, 6 Jan 2012 17:19:27 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
Cc:	Jan Beulich <JBeulich@...e.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>
Subject: Re: [Xen-devel] [PATCH 4/5] xen/pciback: Expand the warning message
 to include domain id.

> > I suppose you might want "Overriding ownership to dom%d".
> 
> OK. To the point and potentially can fit in 80 lines :-).

how about this?
> 
>From a3d4a80cdfd4274016522572148a89260b3f3de6 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Date: Wed, 4 Jan 2012 14:16:45 -0500
Subject: [PATCH] xen/pciback: Expand the warning message to include domain
 id.

When a PCI device is transferred to another domain and it is still
in usage (from the internal perspective), mention which other
domain is using it to aid in debugging.

[v2: Truncate the verbose message per Jan Beulich suggestion]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 drivers/xen/xen-pciback/xenbus.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 474d52e..2405a24 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -243,8 +243,8 @@ static int xen_pcibk_export_device(struct xen_pcibk_device *pdev,
 	dev_dbg(&dev->dev, "registering for %d\n", pdev->xdev->otherend_id);
 	if (xen_register_device_domain_owner(dev,
 					     pdev->xdev->otherend_id) != 0) {
-		dev_err(&dev->dev, "device has been assigned to another " \
-			"domain! Over-writting the ownership, but beware.\n");
+		dev_err(&dev->dev, "Overriding ownership to dom%d.\n",
+			xen_find_device_domain_owner(dev));
 		xen_unregister_device_domain_owner(dev);
 		xen_register_device_domain_owner(dev, pdev->xdev->otherend_id);
 	}
-- 
1.7.7.4

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