diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2008-02-13 17:02:33 +0900 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-02-22 11:51:09 +1100 |
| commit | b726faae715eaa4864888c4a6d0b769ea466601f (patch) | |
| tree | 4187bd958174b4093418c62353f6aabbd4bc8e7e | |
| parent | d287aee10eacca119b269ee83de283fe918fff8c (diff) | |
USB: m66592-udc: reduce size of data structure.
Poking around with pahole, we see that m66592 handily shoves a u16 in
between larger types on 2 separate occasions leaving us with 2 2-byte
holes:
struct m66592 {
...
/* size: 1196, cachelines: 38 */
/* sum members: 1192, holes: 2, sum holes: 4 */
/* last cacheline: 12 bytes */
}; /* definitions: 1 */
Pairing them gets back 4-bytes:
struct m66592 {
...
/* size: 1192, cachelines: 38 */
/* last cacheline: 8 bytes */
}; /* definitions: 1 */
Unfortunately it's not enough to save a cacheline with this massive
structure, but every byte helps.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/gadget/m66592-udc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h index 17b792b7f6bf..be0a4c1f80a2 100644 --- a/drivers/usb/gadget/m66592-udc.h +++ b/drivers/usb/gadget/m66592-udc.h @@ -486,10 +486,10 @@ struct m66592 { struct usb_request *ep0_req; /* for internal request */ u16 ep0_data; /* for internal request */ + u16 old_vbus; struct timer_list timer; - u16 old_vbus; int scount; int old_dvsq; |