linux-kernel - [PATCH tip/core/rcu 0/4] RCU-sync updates for v5.3

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Date:   Thu, 30 May 2019 08:08:16 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org
Subject: [PATCH tip/core/rcu 0/4] RCU-sync updates for v5.3

Hello!

This series contains flavor-consolidation updates to RCU-sync:

1.	Kill rcu_sync_type/gp_type, courtesy of Oleg Nesterov.

2.	Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem in
	uprobes, courtesy of Oleg Nesterov.

3.	Add DEFINE_PERCPU_RWSEM(), use it to initialize
	cgroup_threadgroup_rwsem in percpu-rwsem, courtesy of Oleg Nesterov.

4.	Simplify the state machine, courtesy of Oleg Nesterov.

							Thanx, Paul

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

 include/linux/percpu-rwsem.h  |   10 +
 include/linux/rcu_sync.h      |   40 ++-----
 kernel/cgroup/cgroup.c        |    3 
 kernel/events/uprobes.c       |    4 
 kernel/locking/percpu-rwsem.c |    2 
 kernel/rcu/sync.c             |  220 +++++++++++++++++++-----------------------
 6 files changed, 121 insertions(+), 158 deletions(-)