Re: [PATCH] udevd: fix WAIT_FOR_SYSFS

[Alan Jenkins <alan-jenkins@tuffmail.co.uk>]

Kay Sievers wrote:
> On Thu, Oct 23, 2008 at 21:03, Kay Sievers <kay.sievers@vrfy.org> wrote:
>   
>> On Thu, Oct 23, 2008 at 20:37, Alan Jenkins <alan-jenkins@tuffmail.co.uk> wrote:
>>     
>>> The wait should be ordered after matching KERNEL, ENV, etc.
>>> but before ATTR.
>>>
>>> Without this, WAIT_FOR_SYSFS rules will be applied unconditionally
>>> to all events.
>>>       
>> Ah, nice! Thanks for finding that out. I do not have any of theses
>> rules left, as there are currently no know issues with recent kernels.
>> :) Applied.
>>     
>
> Oh, now that I expect it works for you without the long delay. :) How
> does is compare? Is it still slower?
>
> Thanks,
> Kay
>   

No, that fixed it.  The network interface rename problem seems to have
gone as well (!).

I just tested it on my desktop.  oprofile says it now _reduces_ cpu
cycles in udevd by 10%.  Not big enough to show up in time(1), but not
bad!  And it should help more on the EeePC, which has a less lavish cpu
cache.

Alan