From: Frederic Weisbecker <frederic@kernel.org>
To: "Paul E . McKenney" <paulmck@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Boqun Feng <boqun.feng@gmail.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Neeraj Upadhyay <neeraju@codeaurora.org>,
Josh Triplett <josh@joshtriplett.org>,
Stable <stable@vger.kernel.org>,
Joel Fernandes <joel@joelfernandes.org>
Subject: [PATCH 10/13] rcu/nocb: Delete bypass_timer upon nocb_gp wakeup
Date: Tue, 23 Feb 2021 01:10:08 +0100 [thread overview]
Message-ID: <20210223001011.127063-11-frederic@kernel.org> (raw)
In-Reply-To: <20210223001011.127063-1-frederic@kernel.org>
A NOCB-gp wake up can safely delete the nocb_bypass_timer. nocb_gp_wait()
is going to check again the bypass state and rearm the bypass timer if
necessary.
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>
Cc: Boqun Feng <boqun.feng@gmail.com>
---
kernel/rcu/tree_plugin.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index b62ad79bbda5..9da67b0d3997 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1711,6 +1711,8 @@ 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;
--
2.25.1
next prev parent reply other threads:[~2021-02-23 0:14 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-23 0:09 [PATCH 00/13] rcu/nocb updates v2 Frederic Weisbecker
2021-02-23 0:09 ` [PATCH 01/13] rcu/nocb: Fix potential missed nocb_timer rearm Frederic Weisbecker
2021-02-24 18:37 ` Paul E. McKenney
2021-02-24 22:06 ` Frederic Weisbecker
2021-02-25 0:14 ` Paul E. McKenney
2021-02-25 0:48 ` Frederic Weisbecker
2021-02-25 1:07 ` Paul E. McKenney
2021-03-02 1:48 ` Paul E. McKenney
2021-03-02 12:34 ` Frederic Weisbecker
2021-03-02 18:17 ` Paul E. McKenney
2021-03-03 1:35 ` Frederic Weisbecker
2021-03-03 2:06 ` Paul E. McKenney
2021-03-03 2:17 ` Frederic Weisbecker
2021-03-03 11:15 ` Neeraj Upadhyay
2021-02-23 0:10 ` [PATCH 02/13] rcu/nocb: Disable bypass when CPU isn't completely offloaded Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 03/13] rcu/nocb: Remove stale comment above rcu_segcblist_offload() Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 04/13] rcu/nocb: Move trace_rcu_nocb_wake() calls outside nocb_lock when possible Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 05/13] rcu/nocb: Merge nocb_timer to the rdp leader Frederic Weisbecker
2021-03-03 1:15 ` [PATCH 05/13] rcu/nocb: Use the rcuog CPU's ->nocb_timer Paul E. McKenney
2021-03-10 22:05 ` Frederic Weisbecker
2021-03-16 0:02 ` Paul E. McKenney
2021-02-23 0:10 ` [PATCH 06/13] timer: Revert "timer: Add timer_curr_running()" Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 07/13] rcu/nocb: Directly call __wake_nocb_gp() from bypass timer Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 08/13] rcu/nocb: Allow de-offloading rdp leader Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 09/13] rcu/nocb: Cancel nocb_timer upon nocb_gp wakeup Frederic Weisbecker
2021-02-23 0:10 ` Frederic Weisbecker [this message]
2021-03-03 1:24 ` [PATCH 10/13] rcu/nocb: Delete bypass_timer " Paul E. McKenney
2021-03-10 22:17 ` Frederic Weisbecker
2021-03-15 14:53 ` Boqun Feng
2021-03-15 22:56 ` Frederic Weisbecker
2021-03-16 0:02 ` Paul E. McKenney
2021-02-23 0:10 ` [PATCH 11/13] rcu/nocb: Only cancel nocb timer if not polling Frederic Weisbecker
2021-03-03 1:22 ` Paul E. McKenney
2021-03-10 22:08 ` Frederic Weisbecker
2021-02-23 0:10 ` [PATCH 12/13] rcu/nocb: Prepare for finegrained deferred wakeup Frederic Weisbecker
2021-03-16 3:02 ` Paul E. McKenney
2021-03-16 11:45 ` Frederic Weisbecker
2021-03-16 14:02 ` Paul E. McKenney
2021-02-23 0:10 ` [PATCH 13/13] rcu/nocb: Unify timers Frederic Weisbecker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210223001011.127063-11-frederic@kernel.org \
--to=frederic@kernel.org \
--cc=boqun.feng@gmail.com \
--cc=jiangshanlai@gmail.com \
--cc=joel@joelfernandes.org \
--cc=josh@joshtriplett.org \
--cc=linux-kernel@vger.kernel.org \
--cc=neeraju@codeaurora.org \
--cc=paulmck@kernel.org \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.