linuxaudio.org

Esben Stien wrote:

quoted text
> Susan Cragin  writes:

>

>> It's stuck at 2.6.24-19, and the generic kernel is up to 2.6.26-4

>

> http://kerneltrap.org/Linux/Removing_the_Big_Kernel_Lock

>

> It seems like we're stuck with 2.6.25. (I'm stuck with 2.6.23 cause of

> some weird audio problems with xmms2 on 2.6.24 and 2.6.25).

>

> Anyone know what the foreseeable future holds?

2.6.24 was very stable for audio, at least over here more so than

2.6.25!   I've got a 2.6.26-rt1 working from

git://git.kernel.org/pub/scm/linux/kernel/git/clrkwllms/rt-linux.git
It supports Rui's rtirq setup and jackd/USB-UA25 ran >5 mins without

xruns at 128frames/period, wifi working, it suspends to RAM and

everything. BUT I did not yet try any longer since it spits out the

following message once per second:
 =======================

BUG: sleeping function called from invalid context swapper(0) at

kernel/rtmutex.c:743

in_atomic():1 [00000001], irqs_disabled():0

Pid: 0, comm: swapper Not tainted 2.6.26-rt1 #2

 [] __might_sleep+0xeb/0xf0

 [] __rt_spin_lock+0x5f/0x70

 [] rt_spin_lock+0x8/0x10

 [] pm_qos_requirement+0x10/0x30

 [] acpi_processor_idle+0x407/0x530 [processor]

 [] ? acpi_processor_idle+0x0/0x530 [processor]

 [] cpu_idle+0x68/0xf0

 [] rest_init+0x6c/0x70

 =======================
It does not seem to be a real Bug.. but it's an annoying /mosquito/. I

guess it's related to NO_HZ or some ACPI_XXX config. I could not get the

-tip branch to boot at all, but I did not try too hard just yet.
stay tuned,

robin

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