From: Frederic Weisbecker <frederic@kernel.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
"Paul E . McKenney" <paulmck@kernel.org>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Neeraj Upadhyay <neeraju@codeaurora.org>,
Joel Fernandes <joel@joelfernandes.org>,
Josh Triplett <josh@joshtriplett.org>
Subject: [PATCH 00/16] rcu/nocb: De-offload and re-offload support v3
Date: Fri, 23 Oct 2020 16:46:33 +0200 [thread overview]
Message-ID: <20201023144649.53046-1-frederic@kernel.org> (raw)
Hi,
This is the third attempt to make rcu-nocb mutable at runtime. See
v2 there: https://lwn.net/Articles/832031/
Many fixes included and rcutorture support:
03: Whitespace fix
04: Add "rcu/nocb: Always init segcblist on CPU up" (Thanks rcutorture!)
05: Add return value for failure on (de)offloading
06: Add "rcu/nocb: Don't deoffload an offline CPU with pending work" (Thanks Paul!)
12: Add "rcu/nocb: Only cond_resched() from actual offloaded batch processing" (Thanks rcutorture!)
14: Write a real and more self-confident changelog
15/16: Add rcutorture support (thanks Paul!)
My last remaining worry, as exposed in 13/16, is that __call_rcu_core()
isn't called during transition states. I need to see how I can handle
that.
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
rcu/nocb-toggle-v2
HEAD: 0247cd09fd48a38741e5cc6634810985b405baca
Thanks,
Frederic
---
Frederic Weisbecker (15):
rcu: Implement rcu_segcblist_is_offloaded() config dependent
rcu: Turn enabled/offload states into a common flag
rcu: Provide basic callback offloading state machine bits
rcu/nocb: Always init segcblist on CPU up
rcu: De-offloading CB kthread
rcu/nocb: Don't deoffload an offline CPU with pending work
rcu: De-offloading GP kthread
rcu: Re-offload support
rcu: Shutdown nocb timer on de-offloading
rcu: Flush bypass before setting SEGCBLIST_SOFTIRQ_ONLY
rcu: Set SEGCBLIST_SOFTIRQ_ONLY at the very last stage of de-offloading
rcu/nocb: Only cond_resched() from actual offloaded batch processing
rcu: Process batch locally as long as offloading isn't complete
rcu: Locally accelerate callbacks as long as offloading isn't complete
tools/rcutorture: Support nocb toggle in TREE01
Paul E. McKenney (1):
rcutorture: Test runtime toggling of CPUs' callback offloading
Documentation/admin-guide/kernel-parameters.txt | 8 +
include/linux/rcu_segcblist.h | 119 +++++++-
include/linux/rcupdate.h | 4 +
kernel/rcu/rcu_segcblist.c | 13 +-
kernel/rcu/rcu_segcblist.h | 45 ++-
kernel/rcu/rcutorture.c | 86 +++++-
kernel/rcu/tree.c | 47 +--
kernel/rcu/tree.h | 2 +
kernel/rcu/tree_plugin.h | 330 +++++++++++++++++++--
.../selftests/rcutorture/configs/rcu/TREE01.boot | 4 +-
10 files changed, 603 insertions(+), 55 deletions(-)
next reply other threads:[~2020-10-23 14:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-23 14:46 Frederic Weisbecker [this message]
2020-10-23 14:46 ` [PATCH 01/16] rcu: Implement rcu_segcblist_is_offloaded() config dependent Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 02/16] rcu: Turn enabled/offload states into a common flag Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 03/16] rcu: Provide basic callback offloading state machine bits Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 04/16] rcu/nocb: Always init segcblist on CPU up Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 05/16] rcu: De-offloading CB kthread Frederic Weisbecker
2020-11-02 13:38 ` Boqun Feng
2020-11-04 14:31 ` Frederic Weisbecker
2020-11-04 14:42 ` Boqun Feng
2020-11-04 14:45 ` Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 06/16] rcu/nocb: Don't deoffload an offline CPU with pending work Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 07/16] rcu: De-offloading GP kthread Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 08/16] rcu: Re-offload support Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 09/16] rcu: Shutdown nocb timer on de-offloading Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 10/16] rcu: Flush bypass before setting SEGCBLIST_SOFTIRQ_ONLY Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 11/16] rcu: Set SEGCBLIST_SOFTIRQ_ONLY at the very last stage of de-offloading Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 12/16] rcu/nocb: Only cond_resched() from actual offloaded batch processing Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 13/16] rcu: Process batch locally as long as offloading isn't complete Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 14/16] rcu: Locally accelerate callbacks " Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 15/16] rcutorture: Test runtime toggling of CPUs' callback offloading Frederic Weisbecker
2020-10-23 14:46 ` [PATCH 16/16] tools/rcutorture: Support nocb toggle in TREE01 Frederic Weisbecker
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