rcu.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH tip/core/rcu 0/4] Fix RCU priority boosting
@ 2021-01-20  4:31 Paul E. McKenney
  2021-01-20  4:32 ` [PATCH tip/core/rcu 1/4] rcu: Expedite deboost in case of deferred quiescent state paulmck
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: Paul E. McKenney @ 2021-01-20  4:31 UTC (permalink / raw)
  To: rcu
  Cc: linux-kernel, kernel-team, mingo, jiangshanlai, akpm,
	mathieu.desnoyers, josh, tglx, peterz, rostedt, dhowells,
	edumazet, fweisbec, oleg, joel, bigeasy, swood

Hello!

This series fixes a bug in which an RCU-priority-boosted task can stay
boosted for some time after it has exited its RCU read-side critical
section.  This bug arose during the RCU flavor consolidation effort.
The patches are as follows:

1.	Expedite deboost in case of deferred quiescent state.

2.	Make TREE03 use real-time tree.use_softirq setting.

3.	Run rcuo kthreads at elevated priority in CONFIG_RCU_BOOST
	kernels.

4.	Fix testing of RCU priority boosting.

						Thanx, Paul

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

 kernel/rcu/rcutorture.c                                    |   36 +++++++------
 kernel/rcu/tree_plugin.h                                   |   28 +++++-----
 tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot |    1 
 3 files changed, 39 insertions(+), 26 deletions(-)

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2021-01-28  1:29 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-20  4:31 [PATCH tip/core/rcu 0/4] Fix RCU priority boosting Paul E. McKenney
2021-01-20  4:32 ` [PATCH tip/core/rcu 1/4] rcu: Expedite deboost in case of deferred quiescent state paulmck
2021-01-27  2:42   ` Boqun Feng
2021-01-27  4:40     ` Paul E. McKenney
2021-01-27  7:05       ` Boqun Feng
2021-01-27 19:18         ` Paul E. McKenney
2021-01-28  1:11           ` Boqun Feng
2021-01-28  1:28             ` Paul E. McKenney
2021-01-20  4:32 ` [PATCH tip/core/rcu 2/4] rcutorture: Make TREE03 use real-time tree.use_softirq setting paulmck
2021-01-20  4:32 ` [PATCH tip/core/rcu 3/4] rcu: Run rcuo kthreads at elevated priority in CONFIG_RCU_BOOST kernels paulmck
2021-01-20  4:32 ` [PATCH tip/core/rcu 4/4] rcutorture: Fix testing of RCU priority boosting paulmck

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).