On Thu, Jul 18, 2019 at 10:41:10AM -0700, Nadav Amit wrote: > The current_task is supposed to be constant in each thread and therefore > does not need to be reread. There is already an attempt to cache it > using inline assembly, using this_cpu_read_stable(), which hides the > dependency on the read memory address.
Is that what it does?!, I never quite could understand percpu_stable_op().