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Date: Fri, 4 Jan 2013 15:07:30 -0700
From: Bjorn Helgaas <bhelgaas@...gle.com>
To: Lance Ortiz <lance.ortiz@...com>
Cc: lance_ortiz@...mail.com, jiang.liu@...wei.com, tony.luck@...el.com,
bp@...en8.de, rostedt@...dmis.org, mchehab@...hat.com,
linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 3/3] aerdrv: Cleanup log output for AER
On Thu, Jan 3, 2013 at 3:34 PM, Lance Ortiz <lance.ortiz@...com> wrote:
> These changes make cper_print_aer more consistent with aer_print_error
> and clean things up by elimiating the use of the prefix variable and
> replacing it with dev_printk.
>
> v1-v2 fix some compile errors withinn the #ifdef
> v3-v4 remove agent id stuff and kept print the same to avoid
> compatibility issues
> v7-v8 Updated to use dev_printk instated of prefix. Changed
> log levels to KERN_ERR as per Mauro's suggestion.
> v8-v9 Changed dev_printk to dev_err since all log levels are KERN_ERR.
>
> Signed-off-by: Lance Ortiz <lance.ortiz@...com>
> Acked-by: Tony Luck <tony.luck@...el.com>
Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
Nits (no need to fix them unless you have other reasons to touch this patch):
s/elimiating/eliminating/ above.
I remove the "v1-v2" notes when I merge patches because I don't think
they're useful any more. But if Tony applies these, he can use his
judgment.
And a couple more below.
> ---
>
> drivers/pci/pcie/aer/aerdrv_errprint.c | 54 +++++++++++++++-----------------
> 1 files changed, 26 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
> index d3e5fc5..5ab1425 100644
> --- a/drivers/pci/pcie/aer/aerdrv_errprint.c
> +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
> @@ -124,12 +124,11 @@ static const char *aer_agent_string[] = {
> "Transmitter ID"
> };
>
> -static void __aer_print_error(const char *prefix,
> +static void __aer_print_error(struct pci_dev *dev,
> struct aer_err_info *info)
This looks like it would fit on one line.
> {
> int i, status;
> const char *errmsg = NULL;
> -
Don't remove this blank line.
> status = (info->status & ~info->mask);
>
> for (i = 0; i < 32; i++) {
> @@ -144,26 +143,22 @@ static void __aer_print_error(const char *prefix,
> aer_uncorrectable_error_string[i] : NULL;
>
> if (errmsg)
> - printk("%s"" [%2d] %-22s%s\n", prefix, i, errmsg,
> + dev_err(&dev->dev, " [%2d] %-22s%s\n", i, errmsg,
> info->first_error == i ? " (First)" : "");
> else
> - printk("%s"" [%2d] Unknown Error Bit%s\n", prefix, i,
> - info->first_error == i ? " (First)" : "");
> + dev_err(&dev->dev, " [%2d] Unknown Error Bit%s\n",
> + i, info->first_error == i ? " (First)" : "");
> }
> }
>
> void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
> {
> int id = ((dev->bus->number << 8) | dev->devfn);
> - char prefix[44];
> -
> - snprintf(prefix, sizeof(prefix), "%s%s %s: ",
> - (info->severity == AER_CORRECTABLE) ? KERN_WARNING : KERN_ERR,
> - dev_driver_string(&dev->dev), dev_name(&dev->dev));
>
> if (info->status == 0) {
> - printk("%s""PCIe Bus Error: severity=%s, type=Unaccessible, "
> - "id=%04x(Unregistered Agent ID)\n", prefix,
> + dev_err(&dev->dev,
> + "PCIe Bus Error: severity=%s, type=Unaccessible, "
> + "id=%04x(Unregistered Agent ID)\n",
> aer_error_severity_string[info->severity], id);
This means these messages will all be KERN_ERR, when they used to be
KERN_WARNING or KERN_ERR depending on the severity. That's OK with
me, but mentioning in the changelog would make clear that this is what
you intended.
> } else {
> int layer, agent;
> @@ -171,22 +166,24 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
> layer = AER_GET_LAYER_ERROR(info->severity, info->status);
> agent = AER_GET_AGENT(info->severity, info->status);
>
> - printk("%s""PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n",
> - prefix, aer_error_severity_string[info->severity],
> + dev_err(&dev->dev,
> + "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n",
> + aer_error_severity_string[info->severity],
> aer_error_layer[layer], id, aer_agent_string[agent]);
>
> - printk("%s"" device [%04x:%04x] error status/mask=%08x/%08x\n",
> - prefix, dev->vendor, dev->device,
> + dev_err(&dev->dev,
> + " device [%04x:%04x] error status/mask=%08x/%08x\n",
> + dev->vendor, dev->device,
> info->status, info->mask);
>
> - __aer_print_error(prefix, info);
> + __aer_print_error(dev, info);
>
> if (info->tlp_header_valid) {
> unsigned char *tlp = (unsigned char *) &info->tlp;
> - printk("%s"" TLP Header:"
> + dev_err(&dev->dev, " TLP Header:"
> " %02x%02x%02x%02x %02x%02x%02x%02x"
> " %02x%02x%02x%02x %02x%02x%02x%02x\n",
> - prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> + *(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),
> @@ -195,8 +192,9 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
> }
>
> if (info->id && info->error_dev_num > 1 && info->id == id)
> - printk("%s"" Error of this Agent(%04x) is reported first\n",
> - prefix, id);
> + dev_err(&dev->dev,
> + " Error of this Agent(%04x) is reported first\n",
> + id);
> trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask),
> info->severity);
> }
> @@ -244,21 +242,21 @@ void cper_print_aer(const char *prefix, struct pci_dev *dev, int cper_severity,
> }
> layer = AER_GET_LAYER_ERROR(aer_severity, status);
> agent = AER_GET_AGENT(aer_severity, status);
> - printk("%s""aer_status: 0x%08x, aer_mask: 0x%08x\n",
> - prefix, status, mask);
> + dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n",
> + status, mask);
> cper_print_bits(prefix, status, status_strs, status_strs_size);
> - printk("%s""aer_layer=%s, aer_agent=%s\n", prefix,
> + dev_err(&dev->dev, "aer_layer=%s, aer_agent=%s\n",
> aer_error_layer[layer], aer_agent_string[agent]);
> if (aer_severity != AER_CORRECTABLE)
> - printk("%s""aer_uncor_severity: 0x%08x\n",
> - prefix, aer->uncor_severity);
> + 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;
> - printk("%s""aer_tlp_header:"
> + dev_err(&dev->dev, "aer_tlp_header:"
> " %02x%02x%02x%02x %02x%02x%02x%02x"
> " %02x%02x%02x%02x %02x%02x%02x%02x\n",
> - prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp,
> + *(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),
>
--
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