From: Joel Fernandes <joel@joelfernandes.org>
To: lsf-pc@lists.linux-foundation.org
Cc: Boqun Feng <boqun.feng@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-mm <linux-mm@kvack.org>, rcu <rcu@vger.kernel.org>
Subject: LSFMMBPF proposal [General/MM]: SRCU: a case study in memory ordering
Date: Wed, 11 Jan 2023 06:32:08 -0500 [thread overview]
Message-ID: <CAEXW_YQSkai0-oeZVmWjMr3vZF-uvq-S=6Dxx_BueMOkNHGutw@mail.gmail.com> (raw)
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Title: SRCU: a case study in memory ordering
Description:
Memory ordering guarantees are the backbone of SRCU, an important RCU
synchronization mechanism in the kernel. Can we use the Linux kernel memory
model to understand complex concurrent code better?
In this talk, we will go over:
- SRCU internals overview and why it works
- in detail, all the 8 or so memory barriers in SRCU and why they are
needed.
- comparable access patterns to each barrier (LB, MP etc)
- Linux kernel memory model (LKMM) experiments on studying effects of each
memory barrier, along with execution candidate graphs generated by herd7.
- possible formal methods / models.
- discuss both correctness and forward progress issues tackled by these
memory barriers
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next reply other threads:[~2023-01-11 11:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-11 11:32 Joel Fernandes [this message]
2023-01-11 14:43 Joel Fernandes
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