On Thu, Mar 31, 2016 at 08:54:19AM +0200, Ingo Molnar wrote: > Sounds good to me! I also volunteer the x86 architecture to be the guinea pig > to > convert thread_info::flags to atomic_t ;-) [*]
So I'm not sure we can do this one arch at a time; all the TIF manipulators live in include/linux/thread_info.h and are shared across all archs. Another thing to look out for is that set_bit() uses LOCK BTS when the bit is not a compile time constant, we do not have an atomic_*() version of that. Now I'm not sure if this matters, we might never end up triggering that code path for TIF flags.
