diff mbox

[1/2] PCI, AER: Add a TLP header print helper

Message ID 1386515571-23252-1-git-send-email-bp@alien8.de (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Borislav Petkov Dec. 8, 2013, 3:12 p.m. UTC
From: Borislav Petkov <bp@suse.de>

... and call it instead of duplicating the large printk format
statement.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
 drivers/pci/pcie/aer/aerdrv_errprint.c | 44 ++++++++++++++++------------------
 1 file changed, 21 insertions(+), 23 deletions(-)

Comments

Joe Perches Dec. 8, 2013, 4:05 p.m. UTC | #1
On Sun, 2013-12-08 at 16:12 +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
> 
> ... and call it instead of duplicating the large printk format
> statement.
> 
> No functionality change.

You do change the output.
Perhaps it'd be better to pass the header prefix too.

> diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
[]
> @@ -124,6 +124,21 @@ static const char *aer_agent_string[] = {

> +static void __print_tlp_header(struct pci_dev *dev,
> +			       struct aer_header_log_regs *t)
> +{
> +	unsigned char *tlp = (unsigned char *)&t;
> +
> +	dev_err(&dev->dev, "  TLP Header:"

Always indents and emits "  TLP Header:"

> @@ -250,18 +256,10 @@ void cper_print_aer(struct pci_dev *dev, int cper_severity,
>  	if (aer_severity != AER_CORRECTABLE)
>  		dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n",
>  		       aer->uncor_severity);
> -	if (tlp_header_valid) {
> -		const unsigned char *tlp;
> -		tlp = (const unsigned char *)&aer->header_log;
> -		dev_err(&dev->dev, "aer_tlp_header:"

vs removing this "aer_tlp_header:"


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Borislav Petkov Dec. 8, 2013, 4:13 p.m. UTC | #2
On Sun, Dec 08, 2013 at 08:05:24AM -0800, Joe Perches wrote:
> On Sun, 2013-12-08 at 16:12 +0100, Borislav Petkov wrote:
> > From: Borislav Petkov <bp@suse.de>
> > 
> > ... and call it instead of duplicating the large printk format
> > statement.
> > 
> > No functionality change.
> 
> You do change the output.

That's ok. "TLP Header:" is the proper way to print it anyway.
Joe Perches Dec. 8, 2013, 8:59 p.m. UTC | #3
On Sun, 2013-12-08 at 16:12 +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
> 
> ... and call it instead of duplicating the large printk format
> statement.
[]
> diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
[]
> @@ -124,6 +124,21 @@ static const char *aer_agent_string[] = {

> +static void __print_tlp_header(struct pci_dev *dev,
> +			       struct aer_header_log_regs *t)
> +{
> +	unsigned char *tlp = (unsigned char *)&t;
> +
> +	dev_err(&dev->dev, "  TLP Header:"
> +		" %02x%02x%02x%02x %02x%02x%02x%02x"
> +		" %02x%02x%02x%02x %02x%02x%02x%02x\n",
> +		*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> +		*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
> +		*(tlp + 11), *(tlp + 10), *(tlp + 9),
> +		*(tlp + 8), *(tlp + 15), *(tlp + 14),
> +		*(tlp + 13), *(tlp + 12));
> +}

Hey again Borislav:

Come to think of it, given this struct:

include/linux/aer.h:struct aer_header_log_regs {
include/linux/aer.h-    unsigned int dw0;
include/linux/aer.h-    unsigned int dw1;
include/linux/aer.h-    unsigned int dw2;
include/linux/aer.h-    unsigned int dw3;
include/linux/aer.h-};

this would be a lot more readable as:

static void __print_tlp_header(struct pci_dev *dev,
			       struct aer_header_log_regs *t)
{
	dev_err(&dev->dev, "  TLP Header: %08x %08x %08x %08x\n",
		tlp->dw0, tlp->dw1, tlp->dw2, tlp->dw3);
}

though if the desire really is to show le output,
maybe these should use:

	dev_err(&dev->dev, "  TLP Header: %08x %08x %08x %08x\n",
		cpu_to_le32(tlp->dw0), cpu_to_le32(tlp->dw1),
		cpu_to_le32(tlp->dw2), cpu_to_le32(tlp->dw3));


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Bjorn Helgaas Dec. 16, 2013, 9:03 p.m. UTC | #4
On Sun, Dec 08, 2013 at 04:12:50PM +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
> 
> ... and call it instead of duplicating the large printk format
> statement.
> 
> No functionality change.
> 
> Signed-off-by: Borislav Petkov <bp@suse.de>

I applied both of these to my pci/aer branch for v3.14, thanks!

Bjorn

> ---
>  drivers/pci/pcie/aer/aerdrv_errprint.c | 44 ++++++++++++++++------------------
>  1 file changed, 21 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
> index 2c7c9f5f592c..32efc5e0d2eb 100644
> --- a/drivers/pci/pcie/aer/aerdrv_errprint.c
> +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
> @@ -124,6 +124,21 @@ static const char *aer_agent_string[] = {
>  	"Transmitter ID"
>  };
>  
> +static void __print_tlp_header(struct pci_dev *dev,
> +			       struct aer_header_log_regs *t)
> +{
> +	unsigned char *tlp = (unsigned char *)&t;
> +
> +	dev_err(&dev->dev, "  TLP Header:"
> +		" %02x%02x%02x%02x %02x%02x%02x%02x"
> +		" %02x%02x%02x%02x %02x%02x%02x%02x\n",
> +		*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> +		*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
> +		*(tlp + 11), *(tlp + 10), *(tlp + 9),
> +		*(tlp + 8), *(tlp + 15), *(tlp + 14),
> +		*(tlp + 13), *(tlp + 12));
> +}
> +
>  static void __aer_print_error(struct pci_dev *dev,
>  			      struct aer_err_info *info)
>  {
> @@ -178,17 +193,8 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
>  
>  		__aer_print_error(dev, info);
>  
> -		if (info->tlp_header_valid) {
> -			unsigned char *tlp = (unsigned char *) &info->tlp;
> -			dev_err(&dev->dev, "  TLP Header:"
> -				" %02x%02x%02x%02x %02x%02x%02x%02x"
> -				" %02x%02x%02x%02x %02x%02x%02x%02x\n",
> -				*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> -				*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
> -				*(tlp + 11), *(tlp + 10), *(tlp + 9),
> -				*(tlp + 8), *(tlp + 15), *(tlp + 14),
> -				*(tlp + 13), *(tlp + 12));
> -		}
> +		if (info->tlp_header_valid)
> +			__print_tlp_header(dev, &info->tlp);
>  	}
>  
>  	if (info->id && info->error_dev_num > 1 && info->id == id)
> @@ -250,18 +256,10 @@ void cper_print_aer(struct pci_dev *dev, int cper_severity,
>  	if (aer_severity != AER_CORRECTABLE)
>  		dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n",
>  		       aer->uncor_severity);
> -	if (tlp_header_valid) {
> -		const unsigned char *tlp;
> -		tlp = (const unsigned char *)&aer->header_log;
> -		dev_err(&dev->dev, "aer_tlp_header:"
> -			" %02x%02x%02x%02x %02x%02x%02x%02x"
> -			" %02x%02x%02x%02x %02x%02x%02x%02x\n",
> -			*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> -			*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
> -			*(tlp + 11), *(tlp + 10), *(tlp + 9),
> -			*(tlp + 8), *(tlp + 15), *(tlp + 14),
> -			*(tlp + 13), *(tlp + 12));
> -	}
> +
> +	if (tlp_header_valid)
> +		__print_tlp_header(dev, &aer->header_log);
> +
>  	trace_aer_event(dev_name(&dev->dev), (status & ~mask),
>  			aer_severity);
>  }
> -- 
> 1.8.4
> 
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diff mbox

Patch

diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
index 2c7c9f5f592c..32efc5e0d2eb 100644
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
@@ -124,6 +124,21 @@  static const char *aer_agent_string[] = {
 	"Transmitter ID"
 };
 
+static void __print_tlp_header(struct pci_dev *dev,
+			       struct aer_header_log_regs *t)
+{
+	unsigned char *tlp = (unsigned char *)&t;
+
+	dev_err(&dev->dev, "  TLP Header:"
+		" %02x%02x%02x%02x %02x%02x%02x%02x"
+		" %02x%02x%02x%02x %02x%02x%02x%02x\n",
+		*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
+		*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
+		*(tlp + 11), *(tlp + 10), *(tlp + 9),
+		*(tlp + 8), *(tlp + 15), *(tlp + 14),
+		*(tlp + 13), *(tlp + 12));
+}
+
 static void __aer_print_error(struct pci_dev *dev,
 			      struct aer_err_info *info)
 {
@@ -178,17 +193,8 @@  void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
 
 		__aer_print_error(dev, info);
 
-		if (info->tlp_header_valid) {
-			unsigned char *tlp = (unsigned char *) &info->tlp;
-			dev_err(&dev->dev, "  TLP Header:"
-				" %02x%02x%02x%02x %02x%02x%02x%02x"
-				" %02x%02x%02x%02x %02x%02x%02x%02x\n",
-				*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
-				*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
-				*(tlp + 11), *(tlp + 10), *(tlp + 9),
-				*(tlp + 8), *(tlp + 15), *(tlp + 14),
-				*(tlp + 13), *(tlp + 12));
-		}
+		if (info->tlp_header_valid)
+			__print_tlp_header(dev, &info->tlp);
 	}
 
 	if (info->id && info->error_dev_num > 1 && info->id == id)
@@ -250,18 +256,10 @@  void cper_print_aer(struct pci_dev *dev, int cper_severity,
 	if (aer_severity != AER_CORRECTABLE)
 		dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n",
 		       aer->uncor_severity);
-	if (tlp_header_valid) {
-		const unsigned char *tlp;
-		tlp = (const unsigned char *)&aer->header_log;
-		dev_err(&dev->dev, "aer_tlp_header:"
-			" %02x%02x%02x%02x %02x%02x%02x%02x"
-			" %02x%02x%02x%02x %02x%02x%02x%02x\n",
-			*(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
-			*(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4),
-			*(tlp + 11), *(tlp + 10), *(tlp + 9),
-			*(tlp + 8), *(tlp + 15), *(tlp + 14),
-			*(tlp + 13), *(tlp + 12));
-	}
+
+	if (tlp_header_valid)
+		__print_tlp_header(dev, &aer->header_log);
+
 	trace_aer_event(dev_name(&dev->dev), (status & ~mask),
 			aer_severity);
 }