On Fri, Jan 3, 2014 at 4:35 PM, Miles MH Chen <[email protected]> wrote: > Hi MJ, > > The switch_to(prev, next) function stores the registers of task "prev" to > its kernel stack, than restores registers > of task "next" from its kernel stack than resumes task "next" in kernel > mode. How is the switch_to() function called from schedule ? or what is the umberella function which calls switch_to
What is the flow in which schedule and switch_to is called > If the selected task is a user process, it just takes the "return to user" > path to user space. > > Regards, > MH > > > On Fri, Jan 3, 2014 at 6:31 PM, Mj Embd <[email protected]> wrote: >> >> Hi, >> >> A very basic question. >> AFAIK schedule() selects the next process to run. >> Now once it has selected the process, and say if the process is a user >> space or kernel space one. how does the switch to user happens, >> >> a) Is it in schedule function . it has to be a arch level function >> called from schedule() >> >> b) or Else where, so is there a umberlla function like >> >> somefunc() >> { >> task_ptr = schedule(); >> switch_to(task_ptr) >> >> ... >> >> } >> >> Can someone explain this >> >> _______________________________________________ >> Kernelnewbies mailing list >> [email protected] >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > -- -mj _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
