[PATCH v3 3/5] PCI/AER: Add sysfs attributes to provide breakdown of AERs
From: Rajat Jain <hidden>
Date: 2018-06-20 01:13:11
Also in:
linux-pci, lkml
Subsystem:
pci enhanced error handling (eeh) for powerpc, pci subsystem, the rest · Maintainers:
Mahesh J Salgaonkar, Bjorn Helgaas, Linus Torvalds
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 <redacted> --- v3: Merge everything in aer.c, use "%llu" in place of "%llx" drivers/pci/pcie/aer.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index ce0d675d7bd3..876f03799810 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c@@ -587,10 +587,38 @@ 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]); \ + else if (stats[i]) \ + str += sprintf(str, #stats_array "bit[%d] = 0x%llx\n",\ + i, stats[i]); \ + } \ + return str-buf; \ +} \ +static DEVICE_ATTR_RO(field) + +aer_stats_breakdown_attr(dev_breakdown_correctable, dev_cor_errs, + aer_correctable_error_string); +aer_stats_breakdown_attr(dev_breakdown_uncorrectable, dev_uncor_errs, + aer_uncorrectable_error_string); + static struct attribute *aer_stats_attrs[] __ro_after_init = { &dev_attr_dev_total_cor_errs.attr, &dev_attr_dev_total_fatal_errs.attr, &dev_attr_dev_total_nonfatal_errs.attr, + &dev_attr_dev_breakdown_correctable.attr, + &dev_attr_dev_breakdown_uncorrectable.attr, NULL };
--
2.18.0.rc1.244.gcf134e6275-goog
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