linux-kernel - Re: [PATCH RFC] USB: Add HCD fastboot

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Date:	Fri, 08 Aug 2008 16:30:14 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Simon Arlott <simon@...e.lp0.eu>
CC:	Alan Stern <stern@...land.harvard.edu>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, mingo@...e.hu,
	Daniel Walker <dwalker@...sta.com>,
	USB list <linux-usb@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH RFC] USB: Add HCD fastboot

On 08-08-08 13:29, Simon Arlott wrote:

> I suggest adding initcall_debug=1, it'll show how long the usb and other
> initcalls take to run. You should see the first usb device driver initcall
> take a second or two to run (without the patch). Maybe I'm just badly
> affected by having HCDs with 10 ports (of which only 4 are physically
> usable...).
> 
> dmesg|grep initcall\
> |sed -e 's/.*initcall \([^ ]\+\( \(\[[^]]\+\]\)\)\?\) returned [^ ]\+ after \([^ ]\+\) secs/\4 \1/'\
> |sort -n

Thanks, but that specific expression doesn't work work me,since there's 
not a single one that takes ' secs', only ' msecs'.

Here's the USB related ones here:

> [    1.198751] initcall ehci_hcd_init+0x0/0x11 returned 0 after 123 msecs
> [    1.818688] initcall ohci_hcd_mod_init+0x0/0x31 returned 0 after 591 msecs
> [    2.537756] initcall usb_stor_init+0x0/0x32 returned 0 after 685 msecs

[ ... ]

> [    2.619477] initcall hid_init+0x0/0x3 returned 0 after 0 msecs
> [    2.629667] initcall hid_init+0x0/0x3e returned 0 after 9 msecs

685 isn't nice but better then 2000...

Rene.

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