sched: Report local wake up on resched blind zone within idle loop
The idle loop has several need_resched() checks that make sure we don't
miss a rescheduling request. This means that any wake up performed on
the local runqueue after the last generic need_resched() check is going
to have its rescheduling silently ignored. This has happened in the
past with rcu kthreads awaken from rcu_idle_enter() for example.
Perform sanity checks to report these situations.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar<mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
4 files changed
