OSDN Git Service

(root) / uclinux-h8 / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 0937d04) | patch
rcu: Add WRITE_ONCE() to rcu_state ->gp_req_activity
authorPaul E. McKenney <paulmck@kernel.org>
Fri, 3 Jan 2020 23:17:12 +0000 (15:17 -0800)
committerPaul E. McKenney <paulmck@kernel.org>
Thu, 20 Feb 2020 23:58:22 +0000 (15:58 -0800)
commit2906d2154cd6ad6e4452cc25315d3cea7bb7f2d7
tree4cbf03a8df843b417949fd9fe4c3b7018f0fb9eftree | snapshot
parent0937d045732b5dd5e5df1fb6355d5f4e01f3c4d7commit | diff
rcu: Add WRITE_ONCE() to rcu_state ->gp_req_activity

The rcu_state structure's ->gp_req_activity field is read locklessly,
so this commit adds the WRITE_ONCE() to an update in order to provide
proper documentation and READ_ONCE()/WRITE_ONCE() pairing.

This data race was reported by KCSAN.  Not appropriate for backporting
due to failure being unlikely.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
kernel/rcu/tree.c diff | blob | history
About OSDN
Find Software
Develop Software
Help