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* [PATCH RFC tip/core/rcu 0/2] Fix RCU idle-exit problem and comment
@ 2020-03-13  2:40 Paul E. McKenney
  2020-03-13  2:40 ` [PATCH RFC tip/core/rcu 1/2] rcu: Don't acquire lock in NMI handler in rcu_nmi_enter_common() paulmck
  2020-03-13  2:40 ` [PATCH RFC tip/core/rcu 2/2] rcu: Add comments marking transitions between RCU watching and not paulmck
  0 siblings, 2 replies; 5+ messages in thread
From: Paul E. McKenney @ 2020-03-13  2:40 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, dipankar, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel

Hello!

This series fixes a brown-paper-bag NMI self-deadlock bug located by
Thomas Gleixner and adds comments:

1.	Don't acquire lock in NMI handler in rcu_nmi_enter_common().

2.	Add comments marking transitions between RCU watching and not.

These pass light rcutorture testing, and seem like v5.8 material.

							Thanx, Paul

------------------------------------------------------------------------

 tree.c |   31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2020-03-13 21:47 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-13  2:40 [PATCH RFC tip/core/rcu 0/2] Fix RCU idle-exit problem and comment Paul E. McKenney
2020-03-13  2:40 ` [PATCH RFC tip/core/rcu 1/2] rcu: Don't acquire lock in NMI handler in rcu_nmi_enter_common() paulmck
2020-03-13  3:52   ` Joel Fernandes
2020-03-13 21:47     ` Paul E. McKenney
2020-03-13  2:40 ` [PATCH RFC tip/core/rcu 2/2] rcu: Add comments marking transitions between RCU watching and not paulmck

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