kernel-fxtec-pro1x/drivers/edac/edac_device.c
Linus Torvalds 87a5af24e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC internal API changes from Mauro Carvalho Chehab:
 "This changeset is the first part of a series of patches that fixes the
  EDAC sybsystem.  On this set, it changes the Kernel EDAC API in order
  to properly represent the Intel i3/i5/i7, Xeon 3xxx/5xxx/7xxx, and
  Intel E5-xxxx memory controllers.

  The EDAC core used to assume that:

       - the DRAM chip select pin is directly accessed by the memory
         controller

       - when multiple channels are used, they're all filled with the
         same type of memory.

  None of the above premises is true on Intel memory controllers since
  2002, when RAMBUS and FB-DIMMs were introduced, and Advanced Memory
  Buffer or by some similar technologies hides the direct access to the
  DRAM pins.

  So, the existing drivers for those chipsets had to lie to the EDAC
  core, in general telling that just one channel is filled.  That
  produces some hard to understand error messages like:

       EDAC MC0: CE row 3, channel 0, label "DIMM1": 1 Unknown error(s): memory read error on FATAL area : cpu=0 Err=0008:00c2 (ch=2), addr = 0xad1f73480 => socket=0, Channel=0(mask=2), rank=1

  The location information there (row3 channel 0) is completely bogus:
  it has no physical meaning, and are just some random values that the
  driver uses to talk with the EDAC core.  The error actually happened
  at CPU socket 0, channel 0, slot 1, but this is not reported anywhere,
  as the EDAC core doesn't know anything about the memory layout.  So,
  only advanced users that know how the EDAC driver works and that tests
  their systems to see how DIMMs are mapped can actually benefit for
  such error logs.

  This patch series fixes the error report logic, in order to allow the
  EDAC to expose the memory architecture used by them to the EDAC core.
  So, as the EDAC core now understands how the memory is organized, it
  can provide an useful report:

       EDAC MC0: CE memory read error on DIMM1 (channel:0 slot:1 page:0x364b1b offset:0x600 grain:32 syndrome:0x0 - count:1 area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:4)

  The location of the DIMM where the error happened is reported by "MC0"
  (cpu socket #0), at "channel:0 slot:1" location, and matches the
  physical location of the DIMM.

  There are two remaining issues not covered by this patch series:

       - The EDAC sysfs API will still report bogus values.  So,
         userspace tools like edac-utils will still use the bogus data;

       - Add a new tracepoint-based way to get the binary information
         about the errors.

  Those are on a second series of patches (also at -next), but will
  probably miss the train for 3.5, due to the slow review process."

Fix up trivial conflict (due to spelling correction of removed code) in
drivers/edac/edac_device.c

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (42 commits)
  i7core: fix ranks information at the per-channel struct
  i5000: Fix the fatal error handling
  i5100_edac: Fix a warning when compiled with 32 bits
  i82975x_edac: Test nr_pages earlier to save a few CPU cycles
  e752x_edac: provide more info about how DIMMS/ranks are mapped
  i5000_edac: Fix the logic that retrieves memory information
  i5400_edac: improve debug messages to better represent the filled memory
  edac: Cleanup the logs for i7core and sb edac drivers
  edac: Initialize the dimm label with the known information
  edac: Remove the legacy EDAC ABI
  x38_edac: convert driver to use the new edac ABI
  tile_edac: convert driver to use the new edac ABI
  sb_edac: convert driver to use the new edac ABI
  r82600_edac: convert driver to use the new edac ABI
  ppc4xx_edac: convert driver to use the new edac ABI
  pasemi_edac: convert driver to use the new edac ABI
  mv64x60_edac: convert driver to use the new edac ABI
  mpc85xx_edac: convert driver to use the new edac ABI
  i82975x_edac: convert driver to use the new edac ABI
  i82875p_edac: convert driver to use the new edac ABI
  ...
2012-05-29 18:32:37 -07:00

718 lines
20 KiB
C

/*
* edac_device.c
* (C) 2007 www.douglaskthompson.com
*
* This file may be distributed under the terms of the
* GNU General Public License.
*
* Written by Doug Thompson <norsk5@xmission.com>
*
* edac_device API implementation
* 19 Jan 2007
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/sysctl.h>
#include <linux/highmem.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <linux/workqueue.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include "edac_core.h"
#include "edac_module.h"
/* lock for the list: 'edac_device_list', manipulation of this list
* is protected by the 'device_ctls_mutex' lock
*/
static DEFINE_MUTEX(device_ctls_mutex);
static LIST_HEAD(edac_device_list);
#ifdef CONFIG_EDAC_DEBUG
static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev)
{
debugf3("\tedac_dev = %p dev_idx=%d \n", edac_dev, edac_dev->dev_idx);
debugf4("\tedac_dev->edac_check = %p\n", edac_dev->edac_check);
debugf3("\tdev = %p\n", edac_dev->dev);
debugf3("\tmod_name:ctl_name = %s:%s\n",
edac_dev->mod_name, edac_dev->ctl_name);
debugf3("\tpvt_info = %p\n\n", edac_dev->pvt_info);
}
#endif /* CONFIG_EDAC_DEBUG */
/*
* edac_device_alloc_ctl_info()
* Allocate a new edac device control info structure
*
* The control structure is allocated in complete chunk
* from the OS. It is in turn sub allocated to the
* various objects that compose the structure
*
* The structure has a 'nr_instance' array within itself.
* Each instance represents a major component
* Example: L1 cache and L2 cache are 2 instance components
*
* Within each instance is an array of 'nr_blocks' blockoffsets
*/
struct edac_device_ctl_info *edac_device_alloc_ctl_info(
unsigned sz_private,
char *edac_device_name, unsigned nr_instances,
char *edac_block_name, unsigned nr_blocks,
unsigned offset_value, /* zero, 1, or other based offset */
struct edac_dev_sysfs_block_attribute *attrib_spec, unsigned nr_attrib,
int device_index)
{
struct edac_device_ctl_info *dev_ctl;
struct edac_device_instance *dev_inst, *inst;
struct edac_device_block *dev_blk, *blk_p, *blk;
struct edac_dev_sysfs_block_attribute *dev_attrib, *attrib_p, *attrib;
unsigned total_size;
unsigned count;
unsigned instance, block, attr;
void *pvt, *p;
int err;
debugf4("%s() instances=%d blocks=%d\n",
__func__, nr_instances, nr_blocks);
/* Calculate the size of memory we need to allocate AND
* determine the offsets of the various item arrays
* (instance,block,attrib) from the start of an allocated structure.
* We want the alignment of each item (instance,block,attrib)
* to be at least as stringent as what the compiler would
* provide if we could simply hardcode everything into a single struct.
*/
p = NULL;
dev_ctl = edac_align_ptr(&p, sizeof(*dev_ctl), 1);
/* Calc the 'end' offset past end of ONE ctl_info structure
* which will become the start of the 'instance' array
*/
dev_inst = edac_align_ptr(&p, sizeof(*dev_inst), nr_instances);
/* Calc the 'end' offset past the instance array within the ctl_info
* which will become the start of the block array
*/
count = nr_instances * nr_blocks;
dev_blk = edac_align_ptr(&p, sizeof(*dev_blk), count);
/* Calc the 'end' offset past the dev_blk array
* which will become the start of the attrib array, if any.
*/
/* calc how many nr_attrib we need */
if (nr_attrib > 0)
count *= nr_attrib;
dev_attrib = edac_align_ptr(&p, sizeof(*dev_attrib), count);
/* Calc the 'end' offset past the attributes array */
pvt = edac_align_ptr(&p, sz_private, 1);
/* 'pvt' now points to where the private data area is.
* At this point 'pvt' (like dev_inst,dev_blk and dev_attrib)
* is baselined at ZERO
*/
total_size = ((unsigned long)pvt) + sz_private;
/* Allocate the amount of memory for the set of control structures */
dev_ctl = kzalloc(total_size, GFP_KERNEL);
if (dev_ctl == NULL)
return NULL;
/* Adjust pointers so they point within the actual memory we
* just allocated rather than an imaginary chunk of memory
* located at address 0.
* 'dev_ctl' points to REAL memory, while the others are
* ZERO based and thus need to be adjusted to point within
* the allocated memory.
*/
dev_inst = (struct edac_device_instance *)
(((char *)dev_ctl) + ((unsigned long)dev_inst));
dev_blk = (struct edac_device_block *)
(((char *)dev_ctl) + ((unsigned long)dev_blk));
dev_attrib = (struct edac_dev_sysfs_block_attribute *)
(((char *)dev_ctl) + ((unsigned long)dev_attrib));
pvt = sz_private ? (((char *)dev_ctl) + ((unsigned long)pvt)) : NULL;
/* Begin storing the information into the control info structure */
dev_ctl->dev_idx = device_index;
dev_ctl->nr_instances = nr_instances;
dev_ctl->instances = dev_inst;
dev_ctl->pvt_info = pvt;
/* Default logging of CEs and UEs */
dev_ctl->log_ce = 1;
dev_ctl->log_ue = 1;
/* Name of this edac device */
snprintf(dev_ctl->name,sizeof(dev_ctl->name),"%s",edac_device_name);
debugf4("%s() edac_dev=%p next after end=%p\n",
__func__, dev_ctl, pvt + sz_private );
/* Initialize every Instance */
for (instance = 0; instance < nr_instances; instance++) {
inst = &dev_inst[instance];
inst->ctl = dev_ctl;
inst->nr_blocks = nr_blocks;
blk_p = &dev_blk[instance * nr_blocks];
inst->blocks = blk_p;
/* name of this instance */
snprintf(inst->name, sizeof(inst->name),
"%s%u", edac_device_name, instance);
/* Initialize every block in each instance */
for (block = 0; block < nr_blocks; block++) {
blk = &blk_p[block];
blk->instance = inst;
snprintf(blk->name, sizeof(blk->name),
"%s%d", edac_block_name, block+offset_value);
debugf4("%s() instance=%d inst_p=%p block=#%d "
"block_p=%p name='%s'\n",
__func__, instance, inst, block,
blk, blk->name);
/* if there are NO attributes OR no attribute pointer
* then continue on to next block iteration
*/
if ((nr_attrib == 0) || (attrib_spec == NULL))
continue;
/* setup the attribute array for this block */
blk->nr_attribs = nr_attrib;
attrib_p = &dev_attrib[block*nr_instances*nr_attrib];
blk->block_attributes = attrib_p;
debugf4("%s() THIS BLOCK_ATTRIB=%p\n",
__func__, blk->block_attributes);
/* Initialize every user specified attribute in this
* block with the data the caller passed in
* Each block gets its own copy of pointers,
* and its unique 'value'
*/
for (attr = 0; attr < nr_attrib; attr++) {
attrib = &attrib_p[attr];
/* populate the unique per attrib
* with the code pointers and info
*/
attrib->attr = attrib_spec[attr].attr;
attrib->show = attrib_spec[attr].show;
attrib->store = attrib_spec[attr].store;
attrib->block = blk; /* up link */
debugf4("%s() alloc-attrib=%p attrib_name='%s' "
"attrib-spec=%p spec-name=%s\n",
__func__, attrib, attrib->attr.name,
&attrib_spec[attr],
attrib_spec[attr].attr.name
);
}
}
}
/* Mark this instance as merely ALLOCATED */
dev_ctl->op_state = OP_ALLOC;
/*
* Initialize the 'root' kobj for the edac_device controller
*/
err = edac_device_register_sysfs_main_kobj(dev_ctl);
if (err) {
kfree(dev_ctl);
return NULL;
}
/* at this point, the root kobj is valid, and in order to
* 'free' the object, then the function:
* edac_device_unregister_sysfs_main_kobj() must be called
* which will perform kobj unregistration and the actual free
* will occur during the kobject callback operation
*/
return dev_ctl;
}
EXPORT_SYMBOL_GPL(edac_device_alloc_ctl_info);
/*
* edac_device_free_ctl_info()
* frees the memory allocated by the edac_device_alloc_ctl_info()
* function
*/
void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info)
{
edac_device_unregister_sysfs_main_kobj(ctl_info);
}
EXPORT_SYMBOL_GPL(edac_device_free_ctl_info);
/*
* find_edac_device_by_dev
* scans the edac_device list for a specific 'struct device *'
*
* lock to be held prior to call: device_ctls_mutex
*
* Return:
* pointer to control structure managing 'dev'
* NULL if not found on list
*/
static struct edac_device_ctl_info *find_edac_device_by_dev(struct device *dev)
{
struct edac_device_ctl_info *edac_dev;
struct list_head *item;
debugf0("%s()\n", __func__);
list_for_each(item, &edac_device_list) {
edac_dev = list_entry(item, struct edac_device_ctl_info, link);
if (edac_dev->dev == dev)
return edac_dev;
}
return NULL;
}
/*
* add_edac_dev_to_global_list
* Before calling this function, caller must
* assign a unique value to edac_dev->dev_idx.
*
* lock to be held prior to call: device_ctls_mutex
*
* Return:
* 0 on success
* 1 on failure.
*/
static int add_edac_dev_to_global_list(struct edac_device_ctl_info *edac_dev)
{
struct list_head *item, *insert_before;
struct edac_device_ctl_info *rover;
insert_before = &edac_device_list;
/* Determine if already on the list */
rover = find_edac_device_by_dev(edac_dev->dev);
if (unlikely(rover != NULL))
goto fail0;
/* Insert in ascending order by 'dev_idx', so find position */
list_for_each(item, &edac_device_list) {
rover = list_entry(item, struct edac_device_ctl_info, link);
if (rover->dev_idx >= edac_dev->dev_idx) {
if (unlikely(rover->dev_idx == edac_dev->dev_idx))
goto fail1;
insert_before = item;
break;
}
}
list_add_tail_rcu(&edac_dev->link, insert_before);
return 0;
fail0:
edac_printk(KERN_WARNING, EDAC_MC,
"%s (%s) %s %s already assigned %d\n",
dev_name(rover->dev), edac_dev_name(rover),
rover->mod_name, rover->ctl_name, rover->dev_idx);
return 1;
fail1:
edac_printk(KERN_WARNING, EDAC_MC,
"bug in low-level driver: attempt to assign\n"
" duplicate dev_idx %d in %s()\n", rover->dev_idx,
__func__);
return 1;
}
/*
* del_edac_device_from_global_list
*/
static void del_edac_device_from_global_list(struct edac_device_ctl_info
*edac_device)
{
list_del_rcu(&edac_device->link);
/* these are for safe removal of devices from global list while
* NMI handlers may be traversing list
*/
synchronize_rcu();
INIT_LIST_HEAD(&edac_device->link);
}
/*
* edac_device_workq_function
* performs the operation scheduled by a workq request
*
* this workq is embedded within an edac_device_ctl_info
* structure, that needs to be polled for possible error events.
*
* This operation is to acquire the list mutex lock
* (thus preventing insertation or deletion)
* and then call the device's poll function IFF this device is
* running polled and there is a poll function defined.
*/
static void edac_device_workq_function(struct work_struct *work_req)
{
struct delayed_work *d_work = to_delayed_work(work_req);
struct edac_device_ctl_info *edac_dev = to_edac_device_ctl_work(d_work);
mutex_lock(&device_ctls_mutex);
/* If we are being removed, bail out immediately */
if (edac_dev->op_state == OP_OFFLINE) {
mutex_unlock(&device_ctls_mutex);
return;
}
/* Only poll controllers that are running polled and have a check */
if ((edac_dev->op_state == OP_RUNNING_POLL) &&
(edac_dev->edac_check != NULL)) {
edac_dev->edac_check(edac_dev);
}
mutex_unlock(&device_ctls_mutex);
/* Reschedule the workq for the next time period to start again
* if the number of msec is for 1 sec, then adjust to the next
* whole one second to save timers firing all over the period
* between integral seconds
*/
if (edac_dev->poll_msec == 1000)
queue_delayed_work(edac_workqueue, &edac_dev->work,
round_jiffies_relative(edac_dev->delay));
else
queue_delayed_work(edac_workqueue, &edac_dev->work,
edac_dev->delay);
}
/*
* edac_device_workq_setup
* initialize a workq item for this edac_device instance
* passing in the new delay period in msec
*/
void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev,
unsigned msec)
{
debugf0("%s()\n", __func__);
/* take the arg 'msec' and set it into the control structure
* to used in the time period calculation
* then calc the number of jiffies that represents
*/
edac_dev->poll_msec = msec;
edac_dev->delay = msecs_to_jiffies(msec);
INIT_DELAYED_WORK(&edac_dev->work, edac_device_workq_function);
/* optimize here for the 1 second case, which will be normal value, to
* fire ON the 1 second time event. This helps reduce all sorts of
* timers firing on sub-second basis, while they are happy
* to fire together on the 1 second exactly
*/
if (edac_dev->poll_msec == 1000)
queue_delayed_work(edac_workqueue, &edac_dev->work,
round_jiffies_relative(edac_dev->delay));
else
queue_delayed_work(edac_workqueue, &edac_dev->work,
edac_dev->delay);
}
/*
* edac_device_workq_teardown
* stop the workq processing on this edac_dev
*/
void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev)
{
int status;
status = cancel_delayed_work(&edac_dev->work);
if (status == 0) {
/* workq instance might be running, wait for it */
flush_workqueue(edac_workqueue);
}
}
/*
* edac_device_reset_delay_period
*
* need to stop any outstanding workq queued up at this time
* because we will be resetting the sleep time.
* Then restart the workq on the new delay
*/
void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
unsigned long value)
{
/* cancel the current workq request, without the mutex lock */
edac_device_workq_teardown(edac_dev);
/* acquire the mutex before doing the workq setup */
mutex_lock(&device_ctls_mutex);
/* restart the workq request, with new delay value */
edac_device_workq_setup(edac_dev, value);
mutex_unlock(&device_ctls_mutex);
}
/*
* edac_device_alloc_index: Allocate a unique device index number
*
* Return:
* allocated index number
*/
int edac_device_alloc_index(void)
{
static atomic_t device_indexes = ATOMIC_INIT(0);
return atomic_inc_return(&device_indexes) - 1;
}
EXPORT_SYMBOL_GPL(edac_device_alloc_index);
/**
* edac_device_add_device: Insert the 'edac_dev' structure into the
* edac_device global list and create sysfs entries associated with
* edac_device structure.
* @edac_device: pointer to the edac_device structure to be added to the list
* 'edac_device' structure.
*
* Return:
* 0 Success
* !0 Failure
*/
int edac_device_add_device(struct edac_device_ctl_info *edac_dev)
{
debugf0("%s()\n", __func__);
#ifdef CONFIG_EDAC_DEBUG
if (edac_debug_level >= 3)
edac_device_dump_device(edac_dev);
#endif
mutex_lock(&device_ctls_mutex);
if (add_edac_dev_to_global_list(edac_dev))
goto fail0;
/* set load time so that error rate can be tracked */
edac_dev->start_time = jiffies;
/* create this instance's sysfs entries */
if (edac_device_create_sysfs(edac_dev)) {
edac_device_printk(edac_dev, KERN_WARNING,
"failed to create sysfs device\n");
goto fail1;
}
/* If there IS a check routine, then we are running POLLED */
if (edac_dev->edac_check != NULL) {
/* This instance is NOW RUNNING */
edac_dev->op_state = OP_RUNNING_POLL;
/*
* enable workq processing on this instance,
* default = 1000 msec
*/
edac_device_workq_setup(edac_dev, 1000);
} else {
edac_dev->op_state = OP_RUNNING_INTERRUPT;
}
/* Report action taken */
edac_device_printk(edac_dev, KERN_INFO,
"Giving out device to module '%s' controller "
"'%s': DEV '%s' (%s)\n",
edac_dev->mod_name,
edac_dev->ctl_name,
edac_dev_name(edac_dev),
edac_op_state_to_string(edac_dev->op_state));
mutex_unlock(&device_ctls_mutex);
return 0;
fail1:
/* Some error, so remove the entry from the lsit */
del_edac_device_from_global_list(edac_dev);
fail0:
mutex_unlock(&device_ctls_mutex);
return 1;
}
EXPORT_SYMBOL_GPL(edac_device_add_device);
/**
* edac_device_del_device:
* Remove sysfs entries for specified edac_device structure and
* then remove edac_device structure from global list
*
* @dev:
* Pointer to 'struct device' representing edac_device
* structure to remove.
*
* Return:
* Pointer to removed edac_device structure,
* OR NULL if device not found.
*/
struct edac_device_ctl_info *edac_device_del_device(struct device *dev)
{
struct edac_device_ctl_info *edac_dev;
debugf0("%s()\n", __func__);
mutex_lock(&device_ctls_mutex);
/* Find the structure on the list, if not there, then leave */
edac_dev = find_edac_device_by_dev(dev);
if (edac_dev == NULL) {
mutex_unlock(&device_ctls_mutex);
return NULL;
}
/* mark this instance as OFFLINE */
edac_dev->op_state = OP_OFFLINE;
/* deregister from global list */
del_edac_device_from_global_list(edac_dev);
mutex_unlock(&device_ctls_mutex);
/* clear workq processing on this instance */
edac_device_workq_teardown(edac_dev);
/* Tear down the sysfs entries for this instance */
edac_device_remove_sysfs(edac_dev);
edac_printk(KERN_INFO, EDAC_MC,
"Removed device %d for %s %s: DEV %s\n",
edac_dev->dev_idx,
edac_dev->mod_name, edac_dev->ctl_name, edac_dev_name(edac_dev));
return edac_dev;
}
EXPORT_SYMBOL_GPL(edac_device_del_device);
static inline int edac_device_get_log_ce(struct edac_device_ctl_info *edac_dev)
{
return edac_dev->log_ce;
}
static inline int edac_device_get_log_ue(struct edac_device_ctl_info *edac_dev)
{
return edac_dev->log_ue;
}
static inline int edac_device_get_panic_on_ue(struct edac_device_ctl_info
*edac_dev)
{
return edac_dev->panic_on_ue;
}
/*
* edac_device_handle_ce
* perform a common output and handling of an 'edac_dev' CE event
*/
void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
int inst_nr, int block_nr, const char *msg)
{
struct edac_device_instance *instance;
struct edac_device_block *block = NULL;
if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) {
edac_device_printk(edac_dev, KERN_ERR,
"INTERNAL ERROR: 'instance' out of range "
"(%d >= %d)\n", inst_nr,
edac_dev->nr_instances);
return;
}
instance = edac_dev->instances + inst_nr;
if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) {
edac_device_printk(edac_dev, KERN_ERR,
"INTERNAL ERROR: instance %d 'block' "
"out of range (%d >= %d)\n",
inst_nr, block_nr,
instance->nr_blocks);
return;
}
if (instance->nr_blocks > 0) {
block = instance->blocks + block_nr;
block->counters.ce_count++;
}
/* Propagate the count up the 'totals' tree */
instance->counters.ce_count++;
edac_dev->counters.ce_count++;
if (edac_device_get_log_ce(edac_dev))
edac_device_printk(edac_dev, KERN_WARNING,
"CE: %s instance: %s block: %s '%s'\n",
edac_dev->ctl_name, instance->name,
block ? block->name : "N/A", msg);
}
EXPORT_SYMBOL_GPL(edac_device_handle_ce);
/*
* edac_device_handle_ue
* perform a common output and handling of an 'edac_dev' UE event
*/
void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
int inst_nr, int block_nr, const char *msg)
{
struct edac_device_instance *instance;
struct edac_device_block *block = NULL;
if ((inst_nr >= edac_dev->nr_instances) || (inst_nr < 0)) {
edac_device_printk(edac_dev, KERN_ERR,
"INTERNAL ERROR: 'instance' out of range "
"(%d >= %d)\n", inst_nr,
edac_dev->nr_instances);
return;
}
instance = edac_dev->instances + inst_nr;
if ((block_nr >= instance->nr_blocks) || (block_nr < 0)) {
edac_device_printk(edac_dev, KERN_ERR,
"INTERNAL ERROR: instance %d 'block' "
"out of range (%d >= %d)\n",
inst_nr, block_nr,
instance->nr_blocks);
return;
}
if (instance->nr_blocks > 0) {
block = instance->blocks + block_nr;
block->counters.ue_count++;
}
/* Propagate the count up the 'totals' tree */
instance->counters.ue_count++;
edac_dev->counters.ue_count++;
if (edac_device_get_log_ue(edac_dev))
edac_device_printk(edac_dev, KERN_EMERG,
"UE: %s instance: %s block: %s '%s'\n",
edac_dev->ctl_name, instance->name,
block ? block->name : "N/A", msg);
if (edac_device_get_panic_on_ue(edac_dev))
panic("EDAC %s: UE instance: %s block %s '%s'\n",
edac_dev->ctl_name, instance->name,
block ? block->name : "N/A", msg);
}
EXPORT_SYMBOL_GPL(edac_device_handle_ue);