2 messages, 2 authors, 2003-06-10 · open the first message on its own page
From: chas williams <hidden>
Date: 2003-06-10 17:29:54
In message [off-list ref],Jeff Garzik writes:
Making every IO a conditional branch? Ug.
you could just test once during driver init and setup an indirection to the appropriate function. its a little better than test and branch.
From: David S. Miller <hidden>
Date: 2003-06-10 17:31:11
From: chas williams [off-list ref] Date: Tue, 10 Jun 2003 13:29:54 -0400 In message [off-list ref],Jeff Garzik writes: >Making every IO a conditional branch? Ug. you could just test once during driver init and setup an indirection to the appropriate function. its a little better than test and branch. Function calls are actually more expensive, you eat an entry in the cpu's return address cache.