Messages in this thread | | | Date | Thu, 31 Jul 2008 23:37:26 +0100 | From | Simon Arlott <> | Subject | Re: [patch 5/3] fastboot: sync the async execution before late_initcall and move level 6s (sync) first |
| |
On 31/07/08 23:12, Simon Arlott wrote: > On 31/07/08 22:56, Greg KH wrote: >> On Thu, Jul 31, 2008 at 07:29:21PM +0100, Simon Arlott wrote: >>>>> There is nothing else to run between 1-2 and 3, so there is no >>>>> opportunity >>>>> to initialise devices in the background and usblp_init blocks for a >>>>> while. >>>> If it were a module then it would block in a separate thread and >>>> wouldn't hold up the main init process. >>> >>> Right, but I want to compile all of this into the kernel. >> >> Why? It sounds like a trivial solution for you is to actually use >> modules. Why go through a lot of extra work to solve something in a >> different way that is already solved for you? > > Because it looks like doing HCD init early enough is a simple way to > speed up boot time if there are any compiled-in usb device drivers, > without running the HCD init itself from a separate thread. > > Arjan, are you able to test this? > I'll try doing what I've suggested later tonight if I have time.
I've tested this with fastboot disabled, the hcd initcalls changed back to module_init, all my drivers changed to late_initcall to force them to be later while usb/ is before net/ in the drivers/ Makefile.
-- Simon Arlott [unhandled content-type:application/x-bzip] | |