On 02/26/13 10:17, poma wrote:
On 02/26/13 09:54, Antti Palosaari wrote:
[…]
>> I want just know if I could reproduce that AF9015 error message or was
>> it just warning. Is it something I have to fix for Kernel 3.10 or
>> earlier. I am running Fedora 17 AMD64 and could surely compile any
>> Kernel needed.
>
> OK, found it finally.
> Kernel hacking ---> Enable debugging of DMA-API usage
On /boot/vmlinuz-3.9.0-0.rc0.git7.1.NONE_DMA_API_DEBUG.fc18.x86_64
with 'CONFIG_DMA_API_DEBUG is not set',
"WARNING(S): at lib/dma-debug.c…" are masked.
Thanks for pointing out.
True.
grep CONFIG_DMA_API_DEBUG /boot/config-3.*
/boot/config-3.7.8-202.fc18.x86_64:# CONFIG_DMA_API_DEBUG is not set
/boot/config-3.7.9-201.fc18.x86_64:# CONFIG_DMA_API_DEBUG is not set
/boot/config-3.8.0-1.fc18.x86_64:# CONFIG_DMA_API_DEBUG is not set
/boot/config-3.9.0-0.rc0.git5.1.fc18.x86_64:CONFIG_DMA_API_DEBUG=y
/boot/config-3.9.0-0.rc0.git6.1.fc19.x86_64:CONFIG_DMA_API_DEBUG=y
/boot/config-3.9.0-0.rc0.git7.1.fc19.x86_64:CONFIG_DMA_API_DEBUG=y
>
> There was rather many DVB USB drivers using USB bulk buffers from the
> stack. I will fix at least some of those, lets say for 3.10.
>
After applying
http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/dvb_usb_...
on '7d180f91eaabfbb813f1eda9e39e4445bfb826fc branch 'master' of
git://linuxtv.org/media_build';, all clear. :)
Tested on 3.9.0-0.rc0.git7.1.fc19.x86_64 with mplayer and mythbackend.
Even so,
on /boot/vmlinuz-3.9.0-0.rc0.git7.1.NONE_DEBUG.fc18.x86_64
with disabled debugging options, none of those warnings exist, including
skge's and solved ivtv's locking issue.
Besides there is no speed reduction regarding network part - skge.
Josh was right.
OK, Antti, Mauro, Josh thank you again. ;)
poma