On Thu, Feb 6, 2020 at 2:24 PM Greg KH <greg@xxxxxxxxx> wrote: > > On Thu, Feb 06, 2020 at 12:25:27PM -0500, William Tambe wrote: > > Since voluntary preemption is used during kernel booting, is it safe > > to disable timer interrupt until (system_state >= SYSTEM_RUNNING) ? > > > > Wouldn't it speed up booting ? > > Try it and see! > > :) > > Seriously, think about what needs to be done by the system during boot > time. Hardware is initialized, threads are spawned, lots of other > things are going on. It's not just one single process until that system > state change happens by any means. I am doing kernel porting work and I am able to see Linux booting all the way to init without timer interrupt; despite kernel thread being spawned during booting. Perhaps I may start seeing issues if a module spawn a thread that never voluntarily preempt itself ? > > thanks, > > greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
