linux-kernel - [RFC 0/5] RCU fixes for rcu_assign

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Message-Id: <20190220040827.136184-1-joel@joelfernandes.org>
Date:   Tue, 19 Feb 2019 23:08:22 -0500
From:   "Joel Fernandes (Google)" <joel@...lfernandes.org>
To:     linux-kernel@...r.kernel.org, rcu@...r.kernel.org
Cc:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        paulmck@...ux.ibm.com
Subject: [RFC 0/5] RCU fixes for rcu_assign_pointer usage

These patches fix various RCU API usage issues found due to sparse errors as a
result of the recent check to add rcu_check_sparse() to rcu_assign_pointer().

This is very early RFC stage, and is only build tested. I am also only sending
to the RCU group for initial review before sending to LKML. Thanks for any feedback!

There are still more usages that cause errors such as rbtree which I am
looking into.

Joel Fernandes (5):
net: rtnetlink: Fix incorrect RCU API usage
ixgbe: Fix incorrect RCU API usage
sched/cpufreq: Fix incorrect RCU API usage
sched/toplogy: Use smp_store_release() instead of rcu_assign_pointer
rcuwait: Replace rcu_assign_pointer with smp_store_release

drivers/net/ethernet/intel/ixgbe/ixgbe.h      |  4 ++--
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 16 +++++++++++-----
include/linux/rcuwait.h                       |  2 +-
kernel/sched/cpufreq.c                        |  8 ++++++--
kernel/sched/sched.h                          |  2 +-
kernel/sched/topology.c                       | 16 ++++++++--------
net/core/rtnetlink.c                          |  4 ++--
7 files changed, 31 insertions(+), 21 deletions(-)

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2.21.0.rc0.258.g878e2cd30e-goog