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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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