Re: [PATCH] rcu: avoid checking for constant

[Eric Dumazet]

Le jeudi 12 janvier 2012 Ã 17:08 +0100, Jan Engelhardt a Ãcrit :

> Maybe, maybe naah. The kernel relying on gcc's -O2 mode to do constant 
> value analysis through and into inline functions does not sound too 
> great. The compiler could change on the next moonphase. In fact, one 
> can't use clang -O2 because of this. With my patch, one can again use 
> clang -O2 [with respect to kfree_rcu].

Unless whole kernel can be compiled with -O0, its really some noise.



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