On Sat, Jun 15, 2024 at 03:28:14AM +0200, Peter Zijlstra wrote: > On Fri, Jun 14, 2024 at 12:48:37PM +0200, Vincent Guittot wrote: > > The main problem is that need_resched becomes somewhat meaningless > > because it doesn't only mean "I need to resched a task" and we have > > to add more tests around even for those not using polling > > True, however we already had some of that by having the wakeup list, > that made nr_running less 'reliable'. Doesn't using !idle_cpu() instead of need_resched() in those balance paths already do the right thing? Checking need_resched() as an indicator of it getting work is already a bit an assumption. Also, Ingo, idle_cpu() and friends don't really belong in syscalls.c...
