edac: core fix redundant sysfs controls to parameters

/sys/devices/system/edac/mc has a few files which are duplicated in
/sys/module/edac_core/parameters.  Now that all the functionality is
duplicated between these two locations, we remove the former kobject
attributes and update the documentation.

Signed-off-by: Arthur Jones <ajones@riverbed.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/edac.txt b/Documentation/edac.txt
index a5c3684..ced5273 100644 (file)
--- a/Documentation/edac.txt
+++ b/Documentation/edac.txt
@@ -222,74 +222,9 @@ both csrow2 and csrow3 are populated, this indicates a dual ranked
 set of DIMMs for channels 0 and 1.
 
 
-Within each of the 'mc','mcX' and 'csrowX' directories are several
+Within each of the 'mcX' and 'csrowX' directories are several
 EDAC control and attribute files.
 
-
-============================================================================
-DIRECTORY 'mc'
-
-In directory 'mc' are EDAC system overall control and attribute files:
-
-
-Panic on UE control file:
-
-       'edac_mc_panic_on_ue'
-
-       An uncorrectable error will cause a machine panic.  This is usually
-       desirable.  It is a bad idea to continue when an uncorrectable error
-       occurs - it is indeterminate what was uncorrected and the operating
-       system context might be so mangled that continuing will lead to further
-       corruption. If the kernel has MCE configured, then EDAC will never
-       notice the UE.
-
-       LOAD TIME: module/kernel parameter: panic_on_ue=[0|1]
-
-       RUN TIME:  echo "1" >/sys/devices/system/edac/mc/edac_mc_panic_on_ue
-
-
-Log UE control file:
-
-       'edac_mc_log_ue'
-
-       Generate kernel messages describing uncorrectable errors.  These errors
-       are reported through the system message log system.  UE statistics
-       will be accumulated even when UE logging is disabled.
-
-       LOAD TIME: module/kernel parameter: log_ue=[0|1]
-
-       RUN TIME: echo "1" >/sys/devices/system/edac/mc/edac_mc_log_ue
-
-
-Log CE control file:
-
-       'edac_mc_log_ce'
-
-       Generate kernel messages describing correctable errors.  These
-       errors are reported through the system message log system.
-       CE statistics will be accumulated even when CE logging is disabled.
-
-       LOAD TIME: module/kernel parameter: log_ce=[0|1]
-
-       RUN TIME: echo "1" >/sys/devices/system/edac/mc/edac_mc_log_ce
-
-
-Polling period control file:
-
-       'edac_mc_poll_msec'
-
-       The time period, in milliseconds, for polling for error information.
-       Too small a value wastes resources.  Too large a value might delay
-       necessary handling of errors and might loose valuable information for
-       locating the error.  1000 milliseconds (once each second) is the current
-       default. Systems which require all the bandwidth they can get, may
-       increase this.
-
-       LOAD TIME: module/kernel parameter: poll_msec=[0|1]
-
-       RUN TIME: echo "1000" >/sys/devices/system/edac/mc/edac_mc_poll_msec
-
-
 ============================================================================
 'mcX' DIRECTORIES
 
@@ -537,7 +472,6 @@ Channel 1 DIMM Label control file:
        motherboard specific and determination of this information
        must occur in userland at this time.
 
-
 ============================================================================
 SYSTEM LOGGING
 
@@ -570,7 +504,6 @@ error type, a notice of "no info" and then an optional,
 driver-specific error message.
 
 
-
 ============================================================================
 PCI Bus Parity Detection
 
@@ -604,6 +537,74 @@ Enable/Disable PCI Parity checking control file:
        echo "0" >/sys/devices/system/edac/pci/check_pci_parity
 
 
+Parity Count:
+
+       'pci_parity_count'
+
+       This attribute file will display the number of parity errors that
+       have been detected.
+
+
+============================================================================
+MODULE PARAMETERS
+
+Panic on UE control file:
+
+       'edac_mc_panic_on_ue'
+
+       An uncorrectable error will cause a machine panic.  This is usually
+       desirable.  It is a bad idea to continue when an uncorrectable error
+       occurs - it is indeterminate what was uncorrected and the operating
+       system context might be so mangled that continuing will lead to further
+       corruption. If the kernel has MCE configured, then EDAC will never
+       notice the UE.
+
+       LOAD TIME: module/kernel parameter: edac_mc_panic_on_ue=[0|1]
+
+       RUN TIME:  echo "1" > /sys/module/edac_core/parameters/edac_mc_panic_on_ue
+
+
+Log UE control file:
+
+       'edac_mc_log_ue'
+
+       Generate kernel messages describing uncorrectable errors.  These errors
+       are reported through the system message log system.  UE statistics
+       will be accumulated even when UE logging is disabled.
+
+       LOAD TIME: module/kernel parameter: edac_mc_log_ue=[0|1]
+
+       RUN TIME: echo "1" > /sys/module/edac_core/parameters/edac_mc_log_ue
+
+
+Log CE control file:
+
+       'edac_mc_log_ce'
+
+       Generate kernel messages describing correctable errors.  These
+       errors are reported through the system message log system.
+       CE statistics will be accumulated even when CE logging is disabled.
+
+       LOAD TIME: module/kernel parameter: edac_mc_log_ce=[0|1]
+
+       RUN TIME: echo "1" > /sys/module/edac_core/parameters/edac_mc_log_ce
+
+
+Polling period control file:
+
+       'edac_mc_poll_msec'
+
+       The time period, in milliseconds, for polling for error information.
+       Too small a value wastes resources.  Too large a value might delay
+       necessary handling of errors and might loose valuable information for
+       locating the error.  1000 milliseconds (once each second) is the current
+       default. Systems which require all the bandwidth they can get, may
+       increase this.
+
+       LOAD TIME: module/kernel parameter: edac_mc_poll_msec=[0|1]
+
+       RUN TIME: echo "1000" > /sys/module/edac_core/parameters/edac_mc_poll_msec
+
 
 Panic on PCI PARITY Error:
 
@@ -614,21 +615,13 @@ Panic on PCI PARITY Error:
        error has been detected.
 
 
-       module/kernel parameter: panic_on_pci_parity=[0|1]
+       module/kernel parameter: edac_panic_on_pci_pe=[0|1]
 
        Enable:
-       echo "1" >/sys/devices/system/edac/pci/panic_on_pci_parity
+       echo "1" > /sys/module/edac_core/parameters/edac_panic_on_pci_pe
 
        Disable:
-       echo "0" >/sys/devices/system/edac/pci/panic_on_pci_parity
-
-
-Parity Count:
-
-       'pci_parity_count'
-
-       This attribute file will display the number of parity errors that
-       have been detected.
+       echo "0" > /sys/module/edac_core/parameters/edac_panic_on_pci_pe
 
 
 

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 7bb9c15..cbe1a17 100644 (file)
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -123,16 +123,6 @@ static const char *edac_caps[] = {
 
 
 
-/*
- * /sys/devices/system/edac/mc;
- *     data structures and methods
- */
-static ssize_t memctrl_int_show(void *ptr, char *buffer)
-{
-       int *value = (int *)ptr;
-       return sprintf(buffer, "%u\n", *value);
-}
-
 static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count)
 {
        int *value = (int *)ptr;
@@ -143,23 +133,6 @@ 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
  */
@@ -669,98 +642,10 @@ static struct kobj_type ktype_mci = {
        .default_attrs = (struct attribute **)mci_attr,
 };
 
-/* show/store, tables, etc for the MC kset */
-
-
-struct memctrl_dev_attribute {
-       struct attribute attr;
-       void *value;
-        ssize_t(*show) (void *, char *);
-        ssize_t(*store) (void *, const char *, size_t);
-};
-
-/* Set of show/store abstract level functions for memory control object */
-static ssize_t memctrl_dev_show(struct kobject *kobj,
-                               struct attribute *attr, char *buffer)
-{
-       struct memctrl_dev_attribute *memctrl_dev;
-       memctrl_dev = (struct memctrl_dev_attribute *)attr;
-
-       if (memctrl_dev->show)
-               return memctrl_dev->show(memctrl_dev->value, buffer);
-
-       return -EIO;
-}
-
-static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr,
-                                const char *buffer, size_t count)
-{
-       struct memctrl_dev_attribute *memctrl_dev;
-       memctrl_dev = (struct memctrl_dev_attribute *)attr;
-
-       if (memctrl_dev->store)
-               return memctrl_dev->store(memctrl_dev->value, buffer, count);
-
-       return -EIO;
-}
-
-static struct sysfs_ops memctrlfs_ops = {
-       .show = memctrl_dev_show,
-       .store = memctrl_dev_store
-};
-
-#define MEMCTRL_ATTR(_name, _mode, _show, _store)                      \
-static struct memctrl_dev_attribute attr_##_name = {                   \
-       .attr = {.name = __stringify(_name), .mode = _mode },   \
-       .value  = &_name,                                       \
-       .show   = _show,                                        \
-       .store  = _store,                                       \
-};
-
-#define MEMCTRL_STRING_ATTR(_name, _data, _mode, _show, _store)        \
-static struct memctrl_dev_attribute attr_##_name = {                   \
-       .attr = {.name = __stringify(_name), .mode = _mode },   \
-       .value  = _data,                                        \
-       .show   = _show,                                        \
-       .store  = _store,                                       \
-};
-
-/* csrow<id> control files */
-MEMCTRL_ATTR(edac_mc_panic_on_ue,
-       S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-MEMCTRL_ATTR(edac_mc_log_ue,
-       S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-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, poll_msec_int_store);
-
-/* Base Attributes of the memory ECC object */
-static struct memctrl_dev_attribute *memctrl_attr[] = {
-       &attr_edac_mc_panic_on_ue,
-       &attr_edac_mc_log_ue,
-       &attr_edac_mc_log_ce,
-       &attr_edac_mc_poll_msec,
-       NULL,
-};
-
-
-/* the ktype for the mc_kset internal kobj */
-static struct kobj_type ktype_mc_set_attribs = {
-       .sysfs_ops = &memctrlfs_ops,
-       .default_attrs = (struct attribute **)memctrl_attr,
-};
-
 /* EDAC memory controller sysfs kset:
  *     /sys/devices/system/edac/mc
  */
-static struct kset mc_kset = {
-       .kobj = {.ktype = &ktype_mc_set_attribs },
-};
-
+static struct kset mc_kset;
 
 /*
  * edac_mc_register_sysfs_main_kobj