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| author | Frederic Weisbecker <frederic@kernel.org> | 2021-02-23 01:10:08 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-05-12 12:10:23 -0700 |
| commit | 3b2348e2fdf403b25a317b394db605257f321966 (patch) | |
| tree | 8058bc90bca85c10637d441d05f3d63e4d3b062b /kernel/rcu | |
| parent | b6e2c4ed35c33d7e55197aa26d99645a690ca467 (diff) | |
| download | lwn-3b2348e2fdf403b25a317b394db605257f321966.tar.gz lwn-3b2348e2fdf403b25a317b394db605257f321966.zip | |
rcu/nocb: Delete bypass_timer upon nocb_gp wakeup
A NOCB-gp wake p can safely delete the ->nocb_bypass_timer because
nocb_gp_wait() will recheck again the bypass state and rearm the bypass
timer if necessary. This commit therefore deletes this timer.
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index a667551a5501..4253a0ecc14f 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1701,6 +1701,8 @@ static bool __wake_nocb_gp(struct rcu_data *rdp_gp, del_timer(&rdp_gp->nocb_timer); } + del_timer(&rdp_gp->nocb_bypass_timer); + if (force || READ_ONCE(rdp_gp->nocb_gp_sleep)) { WRITE_ONCE(rdp_gp->nocb_gp_sleep, false); needwake = true; |