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PCI/LINK: Print IRQ number used by port 

Print the IRQ used by PCIe Link Bandwidth Notification services port as
AER, PME and DPC do.  It provides convenience to track PCIe BW notification
interrupt counts of certain port from /proc/interrupts.

The dmesg log is as below:

  pcieport 0000:00:00.0: bw_notification: enabled with IRQ 1166

Link: https://lore.kernel.org/r/1599737055-73624-1-git-send-email-liudongdong3@huawei.com
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Dongdong Liu 2020-09-10 19:24:15 +08:00 committed by Bjorn Helgaas
parent 462bd2fdf5
commit 7b6f224088
1 changed files with 3 additions and 0 deletions
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3
drivers/pci/pcie/bw_notification.c
View File

@ -14,6 +14,8 @@
* and warns when links become degraded in operation.
*/
#define dev_fmt(fmt) "bw_notification: " fmt
#include "../pci.h"
#include "portdrv.h"
@ -97,6 +99,7 @@ static int pcie_bandwidth_notification_probe(struct pcie_device *srv)
return ret;
pcie_enable_link_bandwidth_notification(srv->port);
pci_info(srv->port, "enabled with IRQ %d\n", srv->irq);
return 0;
}