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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-03-21 17:13:24 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-06-11 13:23:43 -0300
commit8ad6c78a69ac5c74e8f4e8c78cdb86772face433 (patch)
tree902da8ecdd71ee842645f1c0d1b009e79ce2065f /drivers
parent199747106934c4dc9cf90d37538f989e29420833 (diff)
downloadlinux-linaro-stable-8ad6c78a69ac5c74e8f4e8c78cdb86772face433.tar.gz
edac: add a sysfs node to report the maximum location for the system
The userspace tools need to know what's the maximum location on each system, as it helps to create nice maps showing how the memory was filled at the system. Reviewed-by: Aristeu Rozanski <arozansk@redhat.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/edac/edac_mc_sysfs.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 86da1767f86e..87fb396bc550 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -766,6 +766,23 @@ static ssize_t mci_size_mb_show(struct device *dev,
return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
}
+static ssize_t mci_max_location_show(struct device *dev,
+ struct device_attribute *mattr,
+ char *data)
+{
+ struct mem_ctl_info *mci = to_mci(dev);
+ int i;
+ char *p = data;
+
+ for (i = 0; i < mci->n_layers; i++) {
+ p += sprintf(p, "%s %d ",
+ edac_layer_name[mci->layers[i].type],
+ mci->layers[i].size - 1);
+ }
+
+ return p - data;
+}
+
/* default Control file */
DEVICE_ATTR(reset_counters, S_IWUSR, NULL, mci_reset_counters_store);
@@ -777,6 +794,7 @@ DEVICE_ATTR(ue_noinfo_count, S_IRUGO, mci_ue_noinfo_show, NULL);
DEVICE_ATTR(ce_noinfo_count, S_IRUGO, mci_ce_noinfo_show, NULL);
DEVICE_ATTR(ue_count, S_IRUGO, mci_ue_count_show, NULL);
DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
+DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
/* memory scrubber attribute file */
DEVICE_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show,
@@ -792,6 +810,7 @@ static struct attribute *mci_attrs[] = {
&dev_attr_ue_count.attr,
&dev_attr_ce_count.attr,
&dev_attr_sdram_scrub_rate.attr,
+ &dev_attr_max_location.attr,
NULL
};