From: Peter Zijlstra <peterz@infradead.org>
To: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, mingo@elte.hu, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de,
rostedt@goodmis.org, Valdis.Kletnieks@vt.edu,
dhowells@redhat.com, eric.dumazet@gmail.com, darren@dvhart.com,
fweisbec@gmail.com, patches@linaro.org
Subject: Re: [RFC PATCH 5/6] implement per-cpu&per-domain state machine call_srcu()
Date: Tue, 06 Mar 2012 11:47:25 +0100 [thread overview]
Message-ID: <1331030845.11248.272.camel@twins> (raw)
In-Reply-To: <1331027858-7648-5-git-send-email-laijs@cn.fujitsu.com>
On Tue, 2012-03-06 at 17:57 +0800, Lai Jiangshan wrote:
> o The srcu callback is new thing, I hope it is completely preemptible,
> even sleepable. It does in this implemetation, I use work_struct
> to stand for every srcu callback.
I didn't need the callbacks to sleep too, I just needed the read-side
srcu bit.
There's an argument against making the callbacks able to sleep like that
in that you typically want to minimize the amount of work done in the
callbacks, allowing them to sleep invites to callbacks that do _way_ too
much work.
I haven't made my mind up if I care yet.. :-)
next prev parent reply other threads:[~2012-03-06 10:48 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-13 2:09 [PATCH RFC tip/core/rcu] rcu: direct algorithmic SRCU implementation Paul E. McKenney
2012-02-15 12:59 ` Peter Zijlstra
2012-02-16 6:35 ` Paul E. McKenney
2012-02-16 10:50 ` Mathieu Desnoyers
2012-02-16 10:52 ` Peter Zijlstra
2012-02-16 11:14 ` Mathieu Desnoyers
2012-02-15 14:31 ` Mathieu Desnoyers
2012-02-15 14:51 ` Mathieu Desnoyers
2012-02-16 6:38 ` Paul E. McKenney
2012-02-16 11:00 ` Mathieu Desnoyers
2012-02-16 11:51 ` Peter Zijlstra
2012-02-16 12:18 ` Mathieu Desnoyers
2012-02-16 12:44 ` Peter Zijlstra
2012-02-16 14:52 ` Mathieu Desnoyers
2012-02-16 14:58 ` Peter Zijlstra
2012-02-16 15:13 ` Paul E. McKenney
2012-02-20 7:15 ` Lai Jiangshan
2012-02-20 17:44 ` Paul E. McKenney
2012-02-21 1:11 ` Lai Jiangshan
2012-02-21 1:50 ` Paul E. McKenney
2012-02-21 8:44 ` Lai Jiangshan
2012-02-21 17:24 ` Paul E. McKenney
2012-02-22 9:29 ` [PATCH 1/3 RFC paul/rcu/srcu] srcu: Remove fast check path Lai Jiangshan
2012-02-22 9:29 ` [PATCH 2/3 RFC paul/rcu/srcu] srcu: only increase the upper bit for srcu_read_lock() Lai Jiangshan
2012-02-22 9:50 ` Peter Zijlstra
2012-02-22 21:20 ` Paul E. McKenney
2012-02-22 21:26 ` Paul E. McKenney
2012-02-22 21:39 ` Steven Rostedt
2012-02-23 1:01 ` Paul E. McKenney
2012-02-22 9:29 ` [PATCH 3/3 RFC paul/rcu/srcu] srcu: flip only once for every grace period Lai Jiangshan
2012-02-23 1:01 ` Paul E. McKenney
2012-02-24 8:06 ` Lai Jiangshan
2012-02-24 20:01 ` Paul E. McKenney
2012-02-27 8:01 ` [PATCH 1/2 RFC] srcu: change the comments of the wait algorithm Lai Jiangshan
2012-02-27 8:01 ` [PATCH 2/2 RFC] srcu: implement Peter's checking algorithm Lai Jiangshan
2012-02-27 18:30 ` Paul E. McKenney
2012-02-28 1:51 ` Lai Jiangshan
2012-02-28 13:47 ` Paul E. McKenney
2012-02-29 10:07 ` Lai Jiangshan
2012-02-29 13:55 ` Paul E. McKenney
2012-03-01 2:31 ` Lai Jiangshan
2012-03-01 13:20 ` Paul E. McKenney
2012-03-10 3:41 ` Lai Jiangshan
2012-03-06 8:42 ` [RFC PATCH 0/6 paul/rcu/srcu] srcu: implement call_srcu() Lai Jiangshan
2012-03-06 9:57 ` [PATCH 1/6] remove unused srcu_barrier() Lai Jiangshan
2012-03-06 9:57 ` [PATCH 2/6] Don't touch the snap in srcu_readers_active() Lai Jiangshan
2012-03-08 19:14 ` Paul E. McKenney
2012-03-06 9:57 ` [PATCH 3/6] use "int trycount" instead of "bool expedited" Lai Jiangshan
2012-03-08 19:25 ` Paul E. McKenney
2012-03-06 9:57 ` [PATCH 4/6] remove flip_idx_and_wait() Lai Jiangshan
2012-03-06 10:41 ` Peter Zijlstra
2012-03-07 3:54 ` [RFC PATCH 5/5 single-thread-version] implement per-domain single-thread state machine call_srcu() Lai Jiangshan
2012-03-08 13:04 ` Peter Zijlstra
2012-03-08 14:17 ` Lai Jiangshan
2012-03-08 13:08 ` Peter Zijlstra
2012-03-08 20:35 ` Paul E. McKenney
2012-03-10 3:16 ` Lai Jiangshan
2012-03-12 18:03 ` Paul E. McKenney
2012-03-14 7:47 ` Lai Jiangshan
2012-04-10 20:15 ` Paul E. McKenney
2012-03-06 9:57 ` [RFC PATCH 5/6] implement per-cpu&per-domain " Lai Jiangshan
2012-03-06 10:47 ` Peter Zijlstra [this message]
2012-03-08 19:44 ` Paul E. McKenney
2012-03-06 10:58 ` Peter Zijlstra
2012-03-06 15:17 ` Lai Jiangshan
2012-03-06 15:38 ` Peter Zijlstra
2012-03-08 19:49 ` Paul E. McKenney
2012-03-10 10:12 ` Peter Zijlstra
2012-03-12 17:52 ` Paul E. McKenney
2012-03-06 11:16 ` Peter Zijlstra
2012-03-06 15:12 ` Lai Jiangshan
2012-03-06 15:34 ` Peter Zijlstra
2012-03-08 19:58 ` Paul E. McKenney
2012-03-10 3:32 ` Lai Jiangshan
2012-03-10 10:09 ` Peter Zijlstra
2012-03-12 17:54 ` Paul E. McKenney
2012-03-12 17:58 ` Peter Zijlstra
2012-03-12 18:32 ` Paul E. McKenney
2012-03-12 20:25 ` Peter Zijlstra
2012-03-12 23:15 ` Paul E. McKenney
2012-03-12 23:18 ` Peter Zijlstra
2012-03-12 23:38 ` Paul E. McKenney
2012-03-06 15:26 ` Lai Jiangshan
2012-03-06 15:37 ` Peter Zijlstra
2012-03-06 11:17 ` Peter Zijlstra
2012-03-06 11:22 ` Peter Zijlstra
2012-03-06 11:35 ` Peter Zijlstra
2012-03-06 11:36 ` Peter Zijlstra
2012-03-06 11:39 ` Peter Zijlstra
2012-03-06 14:50 ` Lai Jiangshan
2012-03-06 11:52 ` Peter Zijlstra
2012-03-06 14:44 ` Lai Jiangshan
2012-03-06 15:31 ` Peter Zijlstra
2012-03-06 15:32 ` Peter Zijlstra
2012-03-07 6:44 ` Lai Jiangshan
2012-03-07 8:10 ` Gilad Ben-Yossef
2012-03-07 9:21 ` Lai Jiangshan
2012-03-06 14:47 ` Lai Jiangshan
2012-03-06 9:57 ` [PATCH 6/6] add srcu torture test Lai Jiangshan
2012-03-08 19:03 ` [PATCH 1/6] remove unused srcu_barrier() Paul E. McKenney
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