1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f97d0dbb59fa..ddad16148bd6 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -70,6 +70,8 @@ struct attribute_group {
  * for examples..
  */
 
+#define SYSFS_PREALLOC 010000
+
 #define __ATTR(_name, _mode, _show, _store) {                           \
         .attr = {.name = __stringify(_name),                            \
                  .mode = VERIFY_OCTAL_PERMISSIONS(_mode) },             \
@@ -77,6 +79,13 @@ struct attribute_group {
         .store  = _store,                                               \
 }
 
+#define __ATTR_PREALLOC(_name, _mode, _show, _store) {                  \
+        .attr = {.name = __stringify(_name),                            \
+                 .mode = SYSFS_PREALLOC | VERIFY_OCTAL_PERMISSIONS(_mode) },\
+        .show   = _show,                                                \
+        .store  = _store,                                               \
+}
+
 #define __ATTR_RO(_name) {                                              \
         .attr   = { .name = __stringify(_name), .mode = S_IRUGO },      \
         .show   = _name##_show,                                         \