diff options
| -rw-r--r-- | arch/powerpc/include/asm/eeh.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 24 | ||||
| -rw-r--r-- | arch/powerpc/kernel/eeh_driver.c | 2 |
3 files changed, 26 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 3e4dd34f2bd2..55abfd09e47f 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -218,6 +218,7 @@ struct eeh_ops { }; extern int eeh_subsystem_flags; +extern int eeh_max_freezes; extern struct eeh_ops *eeh_ops; extern raw_spinlock_t confirm_error_lock; @@ -255,12 +256,6 @@ static inline void eeh_serialize_unlock(unsigned long flags) raw_spin_unlock_irqrestore(&confirm_error_lock, flags); } -/* - * Max number of EEH freezes allowed before we consider the device - * to be permanently disabled. - */ -#define EEH_MAX_ALLOWED_FREEZES 5 - typedef void *(*eeh_traverse_func)(void *data, void *flag); void eeh_set_pe_aux_size(int size); int eeh_phb_pe_create(struct pci_controller *phb); diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index e1b6d8e17289..3b2252e7731b 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -104,6 +104,13 @@ int eeh_subsystem_flags; EXPORT_SYMBOL(eeh_subsystem_flags); +/* + * EEH allowed maximal frozen times. If one particular PE's + * frozen count in last hour exceeds this limit, the PE will + * be forced to be offline permanently. + */ +int eeh_max_freezes = 5; + /* Platform dependent EEH operations */ struct eeh_ops *eeh_ops = NULL; @@ -1652,8 +1659,22 @@ static int eeh_enable_dbgfs_get(void *data, u64 *val) return 0; } +static int eeh_freeze_dbgfs_set(void *data, u64 val) +{ + eeh_max_freezes = val; + return 0; +} + +static int eeh_freeze_dbgfs_get(void *data, u64 *val) +{ + *val = eeh_max_freezes; + return 0; +} + DEFINE_SIMPLE_ATTRIBUTE(eeh_enable_dbgfs_ops, eeh_enable_dbgfs_get, eeh_enable_dbgfs_set, "0x%llx\n"); +DEFINE_SIMPLE_ATTRIBUTE(eeh_freeze_dbgfs_ops, eeh_freeze_dbgfs_get, + eeh_freeze_dbgfs_set, "0x%llx\n"); #endif static int __init eeh_init_proc(void) @@ -1664,6 +1685,9 @@ static int __init eeh_init_proc(void) debugfs_create_file("eeh_enable", 0600, powerpc_debugfs_root, NULL, &eeh_enable_dbgfs_ops); + debugfs_create_file("eeh_max_freezes", 0600, + powerpc_debugfs_root, NULL, + &eeh_freeze_dbgfs_ops); #endif } diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index ac00672af7d1..d099540c0f56 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -667,7 +667,7 @@ static void eeh_handle_normal_event(struct eeh_pe *pe) eeh_pe_update_time_stamp(pe); pe->freeze_count++; - if (pe->freeze_count > EEH_MAX_ALLOWED_FREEZES) + if (pe->freeze_count > eeh_max_freezes) goto excess_failures; pr_warn("EEH: This PCI device has failed %d times in the last hour\n", pe->freeze_count); |