On 07/21/2010 11:22 AM, Christian Dietrich wrote: > Hi all! > > As part of the VAMOS[0] research project at the University of > Erlangen we are looking at multiple integrity errors in linux' > configuration system. > > I've been running a check on the mm/ sourcetree for > config Items not defined in Kconfig and found 1 such case. Sourcecode > blocks depending on these Items are not reachable from a vanilla > kernel -- dead code. I've seen such dead blocks made on purpose > e.g. while integrating new features into the kernel but generally > they're just useless. > > We found, that CONFIG_NEED_PER_CPU_KM is a dead symbol, so it isn't defined > anywhere. Cause of that the percpu_km.c is never included anywhere. Is > this a intended dead symbol, for use in out of tree development, or is > this just an error? Oh, it's new code waiting to be used. It's for cases where SMP is used w/o MMU. IIRC, it was blackfin. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>