From 3958fb34ef18529c1e4a3eca44b7aaf94d4f4697 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Mon, 15 Jan 2007 19:37:25 -0800 Subject: [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 Signed-off-by: David S. Miller --- drivers/net/irda/irda-usb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/irda/irda-usb.h') 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; -- cgit