kernel/sched: Remove remaining irq_lock use
The k_sleep() locking was actually to protect the _current state from
preemption before the context switch, so document that and replace
with a spinlock. Should probably unify this with the rather cleaner
logic in pend_curr(), but right now "sleeping" and "pended" are
needlessly distinct states.
And we can remove the locking entirely from k_wakeup(). There's no
reason for any of that to need to be synchronized. Even if we're
racing with other thread modifiations, the state on exit will be a
runnable thread without a timeout, or whatever timeout/pend state the
other side was requesting (i.e. it's a bug, but not one solved by
synhronization).
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
1 file changed
