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SubjectRe: [PATCH 3/5] PCP/AER: Add sysfs attributes to provide breakdown of AERs
On Tue, May 22, 2018 at 03:28:03PM -0700, Rajat Jain wrote:
> Add sysfs attributes to provide breakdown of the AERs seen,
> into different type of correctable or uncorrectable errors:
>
> dev_breakdown_correctable
> dev_breakdown_uncorrectable
>
> Signed-off-by: Rajat Jain <rajatj@google.com>
> ---
> drivers/pci/pcie/aer/aerdrv.h | 6 ++++++
> drivers/pci/pcie/aer/aerdrv_errprint.c | 6 ++++--
> drivers/pci/pcie/aer/aerdrv_stats.c | 25 +++++++++++++++++++++++++
> 3 files changed, 35 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
> index b5d5ad6f2c03..048fbd7c9633 100644
> --- a/drivers/pci/pcie/aer/aerdrv.h
> +++ b/drivers/pci/pcie/aer/aerdrv.h
> @@ -89,6 +89,12 @@ int pci_aer_stats_init(struct pci_dev *pdev);
> void pci_aer_stats_exit(struct pci_dev *pdev);
> void pci_dev_aer_stats_incr(struct pci_dev *pdev, struct aer_err_info *info);
>
> +extern const char
> +*aer_correctable_error_string[AER_MAX_TYPEOF_CORRECTABLE_ERRS];
> +
> +extern const char
> +*aer_uncorrectable_error_string[AER_MAX_TYPEOF_UNCORRECTABLE_ERRS];
> +
> #ifdef CONFIG_ACPI_APEI
> int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
> #else
> diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
> index 5e8b98deda08..5585f309f1a8 100644
> --- a/drivers/pci/pcie/aer/aerdrv_errprint.c
> +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c
> @@ -68,7 +68,8 @@ static const char *aer_error_layer[] = {
> "Transaction Layer"
> };
>
> -static const char *aer_correctable_error_string[] = {
> +const char
> +*aer_correctable_error_string[AER_MAX_TYPEOF_CORRECTABLE_ERRS] = {
> "Receiver Error", /* Bit Position 0 */
> NULL,
> NULL,
> @@ -87,7 +88,8 @@ static const char *aer_correctable_error_string[] = {
> "Header Log Overflow", /* Bit Position 15 */
> };
>
> -static const char *aer_uncorrectable_error_string[] = {
> +const char
> +*aer_uncorrectable_error_string[AER_MAX_TYPEOF_UNCORRECTABLE_ERRS] = {
> "Undefined", /* Bit Position 0 */
> NULL,
> NULL,
> diff --git a/drivers/pci/pcie/aer/aerdrv_stats.c b/drivers/pci/pcie/aer/aerdrv_stats.c
> index 87b7119d0a86..5f0a6e144f56 100644
> --- a/drivers/pci/pcie/aer/aerdrv_stats.c
> +++ b/drivers/pci/pcie/aer/aerdrv_stats.c
> @@ -61,10 +61,35 @@ aer_stats_aggregate_attr(dev_total_cor_errs);
> aer_stats_aggregate_attr(dev_total_fatal_errs);
> aer_stats_aggregate_attr(dev_total_nonfatal_errs);
>
> +#define aer_stats_breakdown_attr(field, stats_array, strings_array) \
> + static ssize_t \
> + field##_show(struct device *dev, struct device_attribute *attr, \
> + char *buf) \
> +{ \
> + unsigned int i; \
> + char *str = buf; \
> + struct pci_dev *pdev = to_pci_dev(dev); \
> + u64 *stats = pdev->aer_stats->stats_array; \
> + for (i = 0; i < ARRAY_SIZE(strings_array); i++) { \
> + if (strings_array[i]) \
> + str += sprintf(str, "%s = 0x%llx\n", \
> + strings_array[i], stats[i]); \
> + } \
> + return str-buf; \
> +} \

Again with the tabs instead of spaces please.

thanks,

greg k-h

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