diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh.c | 65 |
1 files changed, 38 insertions, 27 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 9b1fd0c0929..1d08cd76e68 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -102,14 +102,22 @@ static DEFINE_RAW_SPINLOCK(confirm_error_lock); #define EEH_PCI_REGS_LOG_LEN 4096 static unsigned char pci_regs_buf[EEH_PCI_REGS_LOG_LEN]; -/* System monitoring statistics */ -static unsigned long no_device; -static unsigned long no_dn; -static unsigned long no_cfg_addr; -static unsigned long ignored_check; -static unsigned long total_mmio_ffs; -static unsigned long false_positives; -static unsigned long slot_resets; +/* + * The struct is used to maintain the EEH global statistic + * information. Besides, the EEH global statistics will be + * exported to user space through procfs + */ +struct eeh_stats { + u64 no_device; /* PCI device not found */ + u64 no_dn; /* OF node not found */ + u64 no_cfg_addr; /* Config address not found */ + u64 ignored_check; /* EEH check skipped */ + u64 total_mmio_ffs; /* Total EEH checks */ + u64 false_positives; /* Unnecessary EEH checks */ + u64 slot_resets; /* PE reset */ +}; + +static struct eeh_stats eeh_stats; #define IS_BRIDGE(class_code) (((class_code)<<16) == PCI_BASE_CLASS_BRIDGE) @@ -392,13 +400,13 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) int rc = 0; const char *location; - total_mmio_ffs++; + eeh_stats.total_mmio_ffs++; if (!eeh_subsystem_enabled) return 0; if (!dn) { - no_dn++; + eeh_stats.no_dn++; return 0; } dn = eeh_find_device_pe(dn); @@ -407,14 +415,14 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) /* Access to IO BARs might get this far and still not want checking. */ if (!(edev->mode & EEH_MODE_SUPPORTED) || edev->mode & EEH_MODE_NOCHECK) { - ignored_check++; + eeh_stats.ignored_check++; pr_debug("EEH: Ignored check (%x) for %s %s\n", edev->mode, eeh_pci_name(dev), dn->full_name); return 0; } if (!edev->config_addr && !edev->pe_config_addr) { - no_cfg_addr++; + eeh_stats.no_cfg_addr++; return 0; } @@ -460,13 +468,13 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) (ret == EEH_STATE_NOT_SUPPORT) || (ret & (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE)) == (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE)) { - false_positives++; + eeh_stats.false_positives++; edev->false_positives ++; rc = 0; goto dn_unlock; } - slot_resets++; + eeh_stats.slot_resets++; /* Avoid repeated reports of this failure, including problems * with other functions on this device, and functions under @@ -513,7 +521,7 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon addr = eeh_token_to_phys((unsigned long __force) token); dev = pci_addr_cache_get_device(addr); if (!dev) { - no_device++; + eeh_stats.no_device++; return val; } @@ -1174,21 +1182,24 @@ static int proc_eeh_show(struct seq_file *m, void *v) { if (0 == eeh_subsystem_enabled) { seq_printf(m, "EEH Subsystem is globally disabled\n"); - seq_printf(m, "eeh_total_mmio_ffs=%ld\n", total_mmio_ffs); + seq_printf(m, "eeh_total_mmio_ffs=%llu\n", eeh_stats.total_mmio_ffs); } else { seq_printf(m, "EEH Subsystem is enabled\n"); seq_printf(m, - "no device=%ld\n" - "no device node=%ld\n" - "no config address=%ld\n" - "check not wanted=%ld\n" - "eeh_total_mmio_ffs=%ld\n" - "eeh_false_positives=%ld\n" - "eeh_slot_resets=%ld\n", - no_device, no_dn, no_cfg_addr, - ignored_check, total_mmio_ffs, - false_positives, - slot_resets); + "no device=%llu\n" + "no device node=%llu\n" + "no config address=%llu\n" + "check not wanted=%llu\n" + "eeh_total_mmio_ffs=%llu\n" + "eeh_false_positives=%llu\n" + "eeh_slot_resets=%llu\n", + eeh_stats.no_device, + eeh_stats.no_dn, + eeh_stats.no_cfg_addr, + eeh_stats.ignored_check, + eeh_stats.total_mmio_ffs, + eeh_stats.false_positives, + eeh_stats.slot_resets); } return 0; |