oldspl 87 kern/thread/spl.c splraise(int oldspl, int newspl) oldspl 92 kern/thread/spl.c KASSERT(oldspl == IPL_NONE); oldspl 107 kern/thread/spl.c spllower(int oldspl, int newspl) oldspl 112 kern/thread/spl.c KASSERT(oldspl == IPL_HIGH);