Driver core: implement uevent suppress in kobject
This patch implements uevent suppress in kobject and removes it
from struct device, based on the following ideas:
1,Uevent sending should be one attribute of kobject, so suppressing it
in kobject layer is more natural than in device layer. By this way,
we can do it for other objects embedded with kobject.
2,It may save several bytes for each instance of struct device.(On my
omap3(32bit ARM) based box, can save 8bytes per device object)
This patch also introduces dev_set|get_uevent_suppress() helpers to
set and query uevent_suppress attribute in case to help kobject
as private part of struct device in future.
[This version is against the latest driver-core patch set of Greg,please
ignore the last version.]
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/device.h b/include/linux/device.h
index 4bea53f..914c101 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -373,7 +373,6 @@
struct device_private *p;
struct kobject kobj;
- unsigned uevent_suppress:1;
const char *init_name; /* initial name of the device */
struct device_type *type;
@@ -465,6 +464,16 @@
dev->driver_data = data;
}
+static inline unsigned int dev_get_uevent_suppress(const struct device *dev)
+{
+ return dev->kobj.uevent_suppress;
+}
+
+static inline void dev_set_uevent_suppress(struct device *dev, int val)
+{
+ dev->kobj.uevent_suppress = val;
+}
+
static inline int device_is_registered(struct device *dev)
{
return dev->kobj.state_in_sysfs;