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Subject[PATCH 03/60] driver core: Rearrange struct device for better packing
Date
From: Matthew Wilcox <matthew@wil.cx>

This minor rearrangement saves 16 bytes from sizeof(struct device)
according to pahole.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
include/linux/device.h | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/device.h b/include/linux/device.h
index 4a52005..4e14fad 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -373,9 +373,9 @@ struct device {

struct kobject kobj;
char bus_id[BUS_ID_SIZE]; /* position on parent bus */
+ unsigned uevent_suppress:1;
const char *init_name; /* initial name of the device */
struct device_type *type;
- unsigned uevent_suppress:1;

struct semaphore sem; /* semaphore to synchronize calls to
* its driver.
@@ -408,12 +408,13 @@ struct device {
/* arch specific additions */
struct dev_archdata archdata;

+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+
spinlock_t devres_lock;
struct list_head devres_head;

struct klist_node knode_class;
struct class *class;
- dev_t devt; /* dev_t, creates the sysfs "dev" */
struct attribute_group **groups; /* optional groups */

void (*release)(struct device *dev);
--
1.6.0.4


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