From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
rostedt@goodmis.org,
"Joel Fernandes (Google)" <joel@joelfernandes.org>,
"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH v2 rcu 10/16] rcu/rcuscale: Use call_rcu_flush() for async reader test
Date: Mon, 21 Nov 2022 17:04:15 -0800 [thread overview]
Message-ID: <20221122010421.3799681-10-paulmck@kernel.org> (raw)
In-Reply-To: <20221122010408.GA3799268@paulmck-ThinkPad-P17-Gen-1>
From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
rcuscale uses call_rcu() to queue async readers. With recent changes to
save power, the test will have fewer async readers in flight. Use the
call_rcu_flush() API instead to revert to the old behavior.
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/rcuscale.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c
index 3baded807a616..3b149e745a0f6 100644
--- a/kernel/rcu/rcuscale.c
+++ b/kernel/rcu/rcuscale.c
@@ -176,7 +176,7 @@ static struct rcu_scale_ops rcu_ops = {
.get_gp_seq = rcu_get_gp_seq,
.gp_diff = rcu_seq_diff,
.exp_completed = rcu_exp_batches_completed,
- .async = call_rcu,
+ .async = call_rcu_flush,
.gp_barrier = rcu_barrier,
.sync = synchronize_rcu,
.exp_sync = synchronize_rcu_expedited,
--
2.31.1.189.g2e36527f23
next prev parent reply other threads:[~2022-11-22 1:05 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 1:04 [PATCH rcu 0/16 Lazy call_rcu() updates for v6.2 Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 01/16] rcu: Simplify rcu_init_nohz() cpumask handling Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 02/16] rcu: Fix late wakeup when flush of bypass cblist happens Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 03/16] rcu: Fix missing nocb gp wake on rcu_barrier() Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 04/16] rcu: Make call_rcu() lazy to save power Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 05/16] rcu: Refactor code a bit in rcu_nocb_do_flush_bypass() Paul E. McKenney
2022-11-23 15:59 ` Frederic Weisbecker
2022-11-23 17:54 ` Paul E. McKenney
2022-11-24 1:00 ` Joel Fernandes
2022-11-22 1:04 ` [PATCH v2 rcu 06/16] rcu: Shrinker for lazy rcu Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 07/16] rcuscale: Add laziness and kfree tests Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 08/16] percpu-refcount: Use call_rcu_flush() for atomic switch Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 09/16] rcu/sync: Use call_rcu_flush() instead of call_rcu Paul E. McKenney
2022-11-22 1:04 ` Paul E. McKenney [this message]
2022-11-22 1:04 ` [PATCH v2 rcu 11/16] rcu/rcutorture: Use call_rcu_flush() where needed Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 12/16] scsi/scsi_error: Use call_rcu_flush() instead of call_rcu() Paul E. McKenney
2022-11-26 0:11 ` Bart Van Assche
2022-11-28 21:39 ` Paul E. McKenney
2022-11-26 2:42 ` Martin K. Petersen
2022-11-22 1:04 ` [PATCH v2 rcu 13/16] workqueue: Make queue_rcu_work() use call_rcu_flush() Paul E. McKenney
2022-11-22 1:09 ` Tejun Heo
2022-11-22 1:23 ` Paul E. McKenney
2022-11-22 1:37 ` Tejun Heo
2022-11-22 1:52 ` Paul E. McKenney
2022-11-22 21:30 ` Tejun Heo
2022-11-22 1:04 ` [PATCH v2 rcu 14/16] rxrpc: Use call_rcu_flush() instead of call_rcu() Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 15/16] net: Use call_rcu_flush() for dst_release() Paul E. McKenney
2022-11-22 1:04 ` [PATCH v2 rcu 16/16] net: devinet: Reduce refcount before grace period Paul E. McKenney
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=20221122010421.3799681-10-paulmck@kernel.org \
--to=paulmck@kernel.org \
--cc=joel@joelfernandes.org \
--cc=kernel-team@meta.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox