From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
bobby.prani@gmail.com, luto@amacapital.net
Subject: [PATCH RFC tip/core/rcu 0/5] Consolidate RCU dyntick-idle counter manipulation
Date: Mon, 14 Nov 2016 10:30:00 -0800 [thread overview]
Message-ID: <20161114183000.GA27133@linux.vnet.ibm.com> (raw)
Hello!
The first four patches of this series consolidate RCU's dyntick-idle
counter manipulations into a set of access functions. These are currently
queued for 4.12 (merge window after next). The last patch in this series
uses the bottom bit of RCU's dyntick-idle counter to track a CPU's state,
and has been proposed to track the need to flush the local CPU's TLB.
This last patch will not be pushed until it has a use.
The patches are as follows:
1. Abstract the dynticks momentary-idle operation.
2. Abstract the dynticks snapshot operation.
3. Abstract dynticks extended quiescent state enter/exit operations.
4. Abstract extended quiescent state determination.
5. Maintain special bits at bottom of ->dynticks counter, which
might be used to track a given CPU's need to flush TLBs.
Thanx, Paul
------------------------------------------------------------------------
include/linux/rcutiny.h | 11 +
kernel/rcu/tree.c | 263 ++++++++++++++++++++++++++++++++++-------------
kernel/rcu/tree.h | 3
kernel/rcu/tree_exp.h | 12 --
kernel/rcu/tree_plugin.h | 2
kernel/rcu/tree_trace.c | 2
6 files changed, 216 insertions(+), 77 deletions(-)
next reply other threads:[~2016-11-14 18:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-14 18:30 Paul E. McKenney [this message]
2016-11-14 18:30 ` [PATCH tip/core/rcu 1/5] rcu: Abstract the dynticks momentary-idle operation Paul E. McKenney
2016-11-14 18:30 ` [PATCH tip/core/rcu 2/5] rcu: Abstract the dynticks snapshot operation Paul E. McKenney
2016-11-14 18:30 ` [PATCH tip/core/rcu 3/5] rcu: Abstract dynticks extended quiescent state enter/exit operations Paul E. McKenney
2016-11-15 1:13 ` Boqun Feng
2016-11-14 18:30 ` [PATCH tip/core/rcu 4/5] rcu: Abstract extended quiescent state determination Paul E. McKenney
2016-11-14 18:30 ` [PATCH tip/core/rcu 5/5] rcu: Maintain special bits at bottom of ->dynticks counter Paul E. McKenney
2016-11-15 1:29 ` Boqun Feng
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