diff options
| -rw-r--r-- | drivers/edac/edac_mc.c | 64 | ||||
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 19 | ||||
| -rw-r--r-- | drivers/edac/edac_module.h | 2 |
3 files changed, 62 insertions, 23 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 4471be36259..063a1bffe38 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -214,6 +214,13 @@ void edac_mc_free(struct mem_ctl_info *mci) } EXPORT_SYMBOL_GPL(edac_mc_free); + +/* + * find_mci_by_dev + * + * scan list of controllers looking for the one that manages + * the 'dev' device + */ static struct mem_ctl_info *find_mci_by_dev(struct device *dev) { struct mem_ctl_info *mci; @@ -268,12 +275,6 @@ static void edac_mc_workq_function(struct work_struct *work_req) if (edac_mc_assert_error_check_and_clear() && (mci->edac_check != NULL)) mci->edac_check(mci); - /* - * FIXME: temp place holder for PCI checks, - * goes away when we break out PCI - */ - edac_pci_do_parity_check(); - mutex_unlock(&mem_ctls_mutex); /* Reschedule */ @@ -314,36 +315,55 @@ static void edac_mc_workq_teardown(struct mem_ctl_info *mci) { int status; - /* if not running POLL, leave now */ - if (mci->op_state == OP_RUNNING_POLL) { - status = cancel_delayed_work(&mci->work); - if (status == 0) { - debugf0("%s() not canceled, flush the queue\n", - __func__); + status = cancel_delayed_work(&mci->work); + if (status == 0) { + debugf0("%s() not canceled, flush the queue\n", + __func__); - /* workq instance might be running, wait for it */ - flush_workqueue(edac_workqueue); - } + /* workq instance might be running, wait for it */ + flush_workqueue(edac_workqueue); } } /* - * edac_reset_delay_period + * edac_mc_reset_delay_period(unsigned long value) + * + * user space has updated our poll period value, need to + * reset our workq delays */ -static void edac_reset_delay_period(struct mem_ctl_info *mci, unsigned long value) +void edac_mc_reset_delay_period(int value) { - /* cancel the current workq request */ - edac_mc_workq_teardown(mci); + struct mem_ctl_info *mci; + struct list_head *item; - /* lock the list of devices for the new setup */ mutex_lock(&mem_ctls_mutex); - /* restart the workq request, with new delay value */ - edac_mc_workq_setup(mci, value); + /* scan the list and turn off all workq timers, doing so under lock + */ + list_for_each(item, &mc_devices) { + mci = list_entry(item, struct mem_ctl_info, link); + + if (mci->op_state == OP_RUNNING_POLL) + cancel_delayed_work(&mci->work); + } + + mutex_unlock(&mem_ctls_mutex); + + + /* re-walk the list, and reset the poll delay */ + mutex_lock(&mem_ctls_mutex); + + list_for_each(item, &mc_devices) { + mci = list_entry(item, struct mem_ctl_info, link); + + edac_mc_workq_setup(mci, (unsigned long) value); + } mutex_unlock(&mem_ctls_mutex); } + + /* Return 0 on success, 1 on failure. * Before calling this function, caller must * assign a unique value to mci->mc_idx. diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index cd090b0677a..4a0576bd06f 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -122,6 +122,23 @@ static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) return count; } +/* + * mc poll_msec time value + */ +static ssize_t poll_msec_int_store(void *ptr, const char *buffer, size_t count) +{ + int *value = (int *)ptr; + + if (isdigit(*buffer)) { + *value = simple_strtoul(buffer, NULL, 0); + + /* notify edac_mc engine to reset the poll period */ + edac_mc_reset_delay_period(*value); + } + + return count; +} + /* EDAC sysfs CSROW data structures and methods */ @@ -704,7 +721,7 @@ MEMCTRL_ATTR(edac_mc_log_ce, S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store); MEMCTRL_ATTR(edac_mc_poll_msec, - S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store); + S_IRUGO | S_IWUSR, memctrl_int_show, poll_msec_int_store); /* Base Attributes of the memory ECC object */ static struct memctrl_dev_attribute *memctrl_attr[] = { diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h index a2134dfc3cc..3664ae9ccd6 100644 --- a/drivers/edac/edac_module.h +++ b/drivers/edac/edac_module.h @@ -52,6 +52,8 @@ extern void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev, extern void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev); extern void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev, unsigned long value); +extern void edac_mc_reset_delay_period(int value); + extern void *edac_align_ptr(void *ptr, unsigned size); /* |