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drm: reorder struct drm_ioctl_desc to save space on 64 bit builds 

shrinks drm_ioctl_desc from 24 bytes to 16 bytes by reordering members
to remove padding.

updates DRM_IOCTL_DEF macro to initialise structure members by name to
handle the structure reorder.

The applied patch reduces data used in drm.ko from 10440 to 9032

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Richard Kennedy 2009-03-18 17:26:44 +00:00 committed by Dave Airlie
parent 40fc6eab59
commit c972d750e4
1 changed files with 3 additions and 3 deletions
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6
include/drm/drmP.h
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@ -281,16 +281,16 @@ typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
struct drm_ioctl_desc {
unsigned int cmd;
drm_ioctl_t *func;
int flags;
drm_ioctl_t *func;
};
/**
* Creates a driver or general drm_ioctl_desc array entry for the given
* ioctl, for use by drm_ioctl().
*/
#define DRM_IOCTL_DEF(ioctl, func, flags) \
[DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
#define DRM_IOCTL_DEF(ioctl, _func, _flags) \
[DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags}
struct drm_magic_entry {
struct list_head head;