[mythtv-users] Linux kernel 2.6.30 released (PVR-1212 driver now officially supported)

Nick Rout nick.rout at gmail.com
Wed Jun 10 21:05:03 UTC 2009

On Thu, Jun 11, 2009 at 6:06 AM, Larry Finger<Larry.Finger at lwfinger.net> wrote:
> Patrick Davila wrote:
>> Linux kernel 2.6.30 is officially out:
>> http://www.h-online.com/open/Linux-Kernel-2-6-30-released--/news/113492
>> I searched through the source code and can confirm the hdpvr driver is in
>> there. Now all we need is for Myth 0.22 to be finished.
> I have been running 2.6.30 since -rc1 and it has been stable, even in
> the early versions.
> There is one problem. On my x86_64 system, I have been getting memory
> allocation failures of order 1. See kernel bugzilla entry #13319 for
> details. Just this morning, we discovered that when using SLUB with
> CONFIG_SLUB_DEBUG enabled, the allocator thinks that a request for
> 4096 bytes is of order 1, not order 0 as it should! The problem arises
> when memory gets badly fragmented, with a lot of 4K pieces that cannot
> satisfy the request. If I try hard with lots of kernel compiles, etc.,
> it takes about 24 hours before the failures start. I'm currently
> testing a patch for the problem that should be in, it it works.
> AFAIK, this problem does not affect systems using SLAB or SLOB, nor if
> SLUB_DEBUG is off.

slub, slab, slob: you really are John Cleese posing as Larry aren't you?

> Larry

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