param: Fix duplicate module prefixes
Instead of insisting each new module_param sysfs entry is unique,
handle the case where it already exists (for builtin modules).
The current code assumes that all identical prefixes are together in
the section: true for normal uses, but not necessarily so if someone
overrides MODULE_PARAM_PREFIX. More importantly, it's not true with
the new "core_param()" code which uses "kernel" as a prefix.
This simplifies the caller for the builtin case, at a slight loss of
efficiency (we do the lookup every time to see if the directory
exists).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/module.h b/include/linux/module.h
index 196b499..3bfed01 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -60,6 +60,7 @@
struct kobject kobj;
struct module *mod;
struct kobject *drivers_dir;
+ struct module_param_attrs *mp;
};
/* These are either module local, or the kernel's dummy ones. */
@@ -242,7 +243,6 @@
/* Sysfs stuff. */
struct module_kobject mkobj;
- struct module_param_attrs *param_attrs;
struct module_attribute *modinfo_attrs;
const char *version;
const char *srcversion;