diff options
| author |   Samuel Ortiz <samuel@sortiz.org> | 2007-01-15 19:37:25 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2007-01-23 20:25:49 -0800 |
| commit | 3958fb34ef18529c1e4a3eca44b7aaf94d4f4697 (patch) | |
| tree | e7ed13bfae551ed43e530148293e889998768c35 /drivers/net/irda/irda-usb.h | |
| parent | [X.25]: Add missing sock_put in x25_receive_data (diff) | |
| download | linux-dev-3958fb34ef18529c1e4a3eca44b7aaf94d4f4697.tar.xz linux-dev-3958fb34ef18529c1e4a3eca44b7aaf94d4f4697.zip | |
[IrDA]: irda-usb TX path optimization (was Re: IrDA spams logfiles - since 2.6.19)
Since we stop using dev_alloc_skb on the IrDA TX frame, we constantly run
into the case of the skb headroom being 0, and thus we call skb_cow for
every IrDA TX frame.
This patch uses a local buffer and memcpy the skb to it, saving us a
kmalloc for each of those IrDA TX frames.
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/irda/irda-usb.h')
| -rw-r--r-- | drivers/net/irda/irda-usb.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/irda/irda-usb.h b/drivers/net/irda/irda-usb.h index 6b2271f18e77..e846c38224a3 100644 --- a/drivers/net/irda/irda-usb.h +++ b/drivers/net/irda/irda-usb.h @@ -156,6 +156,7 @@ struct irda_usb_cb { struct irlap_cb *irlap; /* The link layer we are binded to */ struct qos_info qos; char *speed_buff; /* Buffer for speed changes */ + char *tx_buff; struct timeval stamp; struct timeval now; |