On Thu, Dec 16, 2004 at 04:06:12PM +0800, zhan rongkai wrote: > hi all, > > I am a little confused about the task_struct member 'used_math', and > thread_info flag TIF_USEDFPU. > > What are their meaning, and what is the difference between them? > used_math is used to indicate whether a process has ever used FPU since it is created (which typically is true due to the glibc using FPU at the beginning of each program). TIF_USEDFPU indicates whether a _running_ process has used FPU since it is context-switched on. Jun
