On Fri, Sep 28, 2018 at 11:02 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > There may be a much nicer solution. Unless I missed something, only > mips and xtensa even have the possibility of cmpxchg being missing. > We could just make those arches supply a futex-detecting helper. In case of xtensa availability of cmpxchg is known at build time. -- Thanks. -- Max
