[vdr] [PATCH] rcu NPTL fix for 1.3.34

Andreas Share a.share at t-online.de
Sat Dec 17 21:18:05 CET 2005

> Andreas Share wrote:
>>> [ ... rcu.c vs. NPTL ... ]
>> no problem for me, and because i think most other user uses lirc or the
>> remote plugin to control vdr it is only a minor problem. So i still use
>> rcu without the locks and wait until you use a NPTL enabled linux;)
> Ok, so I finally switched to kernel 2.6 and the dvb-kernel driver
> for good, and now I get the problems with rcu.c, too.
> I have modified rcu.c so that it now does all actual data
> transmission in the Action() function, so no more locking
> is necessary. Simply dropping the locking caused lots of
> errors like
>  ERROR (rcu.c,188): Invalid argument
> when background and foreground thread tried to access the
> interface at the same time.
> Maybe you'd like to take a look at the attached patch.
> Klaus

I have had the same error messages here, but i have not seen any side effect 
the last month. But your solution is the better way, i have tested it with 
NPTL, including key-learnig, works fine:)

thank you


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