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[PATCH v3 6/6] xen: pci: print reference counter when dumping pci_devs
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Tue, 14 Mar 2023 20:56:30 +0000
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- Cc: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 14 Mar 2023 20:57:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHZVrdzYEuAtB/tbEeKWg2MuafMXg==
- Thread-topic: [PATCH v3 6/6] xen: pci: print reference counter when dumping pci_devs
This can be handy during new reference counter approach evaluation.
Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
---
v3:
- Moved from another patch series
---
xen/drivers/passthrough/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index b32382aca0..1eb79e7d01 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -1275,7 +1275,8 @@ static int cf_check _dump_pci_devices(struct pci_seg
*pseg, void *arg)
else
#endif
printk("%pd", pdev->domain);
- printk(" - node %-3d", (pdev->node != NUMA_NO_NODE) ? pdev->node : -1);
+ printk(" - node %-3d refcnt %d", (pdev->node != NUMA_NO_NODE) ?
pdev->node : -1,
+ refcnt_read(&pdev->refcnt));
pdev_dump_msi(pdev);
printk("\n");
}
--
2.39.2
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