linux-kernel - Re: [PATCH v4 2/5] PCI/ERR: Rename error reporting to generic pci naming

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Message-ID: <553ef73a25bbbd6e0211c9bc6867a4a7@codeaurora.org>
Date:   Wed, 17 Jan 2018 13:54:40 +0530
From:   poza@...eaurora.org
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Keith Busch <keith.busch@...el.com>, Wei Zhang <wzhang@...com>,
        Sinan Kaya <okaya@...eaurora.org>,
        Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v4 2/5] PCI/ERR: Rename error reporting to generic pci
 naming

On 2018-01-17 06:46, Bjorn Helgaas wrote:
> On Tue, Jan 16, 2018 at 03:28:40PM +0530, Oza Pawandeep wrote:
>> This patch renames error reporting to generic function with pci prefix
>> 
>> Signed-off-by: Oza Pawandeep <poza@...eaurora.org>
>> 
>> diff --git a/drivers/pci/pcie/aer/aerdrv_core.c 
>> b/drivers/pci/pcie/aer/aerdrv_core.c
>> index 4fda843..5ed9575 100644
>> --- a/drivers/pci/pcie/aer/aerdrv_core.c
>> +++ b/drivers/pci/pcie/aer/aerdrv_core.c
>> @@ -285,7 +285,7 @@ static void handle_error_source(struct pcie_device 
>> *aerdev,
>>  			pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
>>  					info->status);
>>  	} else
>> -		do_recovery(dev, info->severity);
>> +		pci_do_recovery(dev, info->severity);
>>  }
>> 
>>  #ifdef CONFIG_ACPI_APEI_PCIEAER
>> @@ -349,7 +349,7 @@ static void aer_recover_work_func(struct 
>> work_struct *work)
>>  			continue;
>>  		}
>>  		cper_print_aer(pdev, entry.severity, entry.regs);
>> -		do_recovery(pdev, entry.severity);
>> +		pci_do_recovery(pdev, entry.severity);
>>  		pci_dev_put(pdev);
>>  	}
>>  }
>> diff --git a/drivers/pci/pcie/pcie-err.c b/drivers/pci/pcie/pcie-err.c
>> index 76e66bb..5792a9f 100644
>> --- a/drivers/pci/pcie/pcie-err.c
>> +++ b/drivers/pci/pcie/pcie-err.c
>> @@ -20,12 +20,12 @@
>>  #include <linux/pcieport_if.h>
>>  #include "portdrv.h"
>> 
>> -struct aer_broadcast_data {
>> +struct pci_err_broadcast_data {
>>  	enum pci_channel_state state;
>>  	enum pci_ers_result result;
>>  };
>> 
>> -pci_ers_result_t merge_result(enum pci_ers_result orig,
>> +pci_ers_result_t pci_merge_result(enum pci_ers_result orig,
> 
> Most of these functions started out static in aerdrv_core.c and should
> remain static.  Therefore, they do not need to be renamed.  Same for
> the struct aer_broadcast_data.
> 
>> diff --git a/include/linux/pci.h b/include/linux/pci.h
>> index 46fd243..babcd89 100644
>> --- a/include/linux/pci.h
>> +++ b/include/linux/pci.h
>> @@ -1998,7 +1998,7 @@ static inline resource_size_t 
>> pci_iov_resource_size(struct pci_dev *dev, int res
>>  void pci_hp_remove_module_link(struct pci_slot *pci_slot);
>>  #endif
>> 
>> -void do_recovery(struct pci_dev *dev, int severity);
>> +void pci_do_recovery(struct pci_dev *dev, int severity);
> 
> This one started out static and now needs to be non-static so you can
> call it both from aerdrv_core.c and pcie-dpc.c.
> 
> But it should not be exposed outside the PCI core, so the declaration
> should go in drivers/pci/pcie/aer/aerdrv.h or at most
> drivers/pci/pci.h.
> 
> The rename should happen before the move out of aerdrv_core.c, i.e.,
> reorder patches 1 and 2.

ok so let me confirm. you would like to see renaming but that should 
happen right in patch1.
and then move all the error reporting to pcie_err.c
is that correct ?


besides, I am thinking to move
pci_do_recovery and removing everything from include/linux/pci.h  (which 
you suggested already)
but along with that....following defines will move in driver/pci/pci.h

#define PCI_ERR_AER_NONFATAL           0
#define PCI_ERR_AER_FATAL              1
#define PCI_ERR_AER_CORRECTABLE        2
#define PCI_ERR_DPC_NONFATAL           4

because, error codes have to be unified at one place.

will work on this and post the patch-set soon.

Regards,
Oza.

> 
>>  /**
>>   * pci_pcie_cap - get the saved PCIe capability offset
>> --
>> Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm 
>> Technologies, Inc.,
>> a Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a 
>> Linux Foundation Collaborative Project.
>>