linux-kernel - Re: [RFC] Log PCIe service info with pci_dev, not pcie

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Date:   Fri, 8 Mar 2019 11:24:38 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     linux-pci@...r.kernel.org, Lukas Wunner <lukas@...ner.de>,
        Russell Currey <ruscur@...sell.cc>,
        Sam Bobroff <sbobroff@...ux.ibm.com>,
        Oliver O'Halloran <oohall@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Sinan Kaya <okaya@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Matthew Wilcox <willy@...radead.org>,
        Frederick Lawler <fred@...dlawl.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC] Log PCIe service info with pci_dev, not pcie_device

On Fri, Mar 08, 2019 at 12:01:49PM -0600, Bjorn Helgaas wrote:
> Changing that would be a big project that I don't want to tackle right
> now, but I think a small step would be to simplify the dmesg logging
> by doing it with the underlying pci_dev instead of the pcie_device.
> For example, we could do something like the patch below, which would
> change the dmesg output like this:
> 
>   - pciehp 0000:80:10.0:pcie004: Slot #36 AttnBtn- PwrCtrl- MRL- AttnInd+ PwrInd+ HotPlug+ Surprise+ Interlock- NoCompl- LLActRep+
>   + pcieport 0000:80:10.0: pciehp: Slot #36 AttnBtn- PwrCtrl- MRL- AttnInd+ PwrInd+ HotPlug+ Surprise+ Interlock- NoCompl- LLActRep+
 

Acked-by: Keith Busch <keith.busch@...el.com>
 
> diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
> index 7dd443aea5a5..2761778f2ecc 100644
> --- a/drivers/pci/hotplug/pciehp_hpc.c
> +++ b/drivers/pci/hotplug/pciehp_hpc.c
> @@ -868,7 +868,7 @@ struct controller *pcie_init(struct pcie_device *dev)
>  		PCI_EXP_SLTSTA_MRLSC | PCI_EXP_SLTSTA_CC |
>  		PCI_EXP_SLTSTA_DLLSC | PCI_EXP_SLTSTA_PDC);
>  
> -	ctrl_info(ctrl, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interlock%c NoCompl%c LLActRep%c%s\n",
> +	pci_info(pdev, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interlock%c NoCompl%c LLActRep%c%s\n",
>  		(slot_cap & PCI_EXP_SLTCAP_PSN) >> 19,
>  		FLAG(slot_cap, PCI_EXP_SLTCAP_ABP),
>  		FLAG(slot_cap, PCI_EXP_SLTCAP_PCP),