Message ID | 20221016162305.2489629-9-joel@joelfernandes.org |
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State | New |
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[34.150.221.228]) by smtp.gmail.com with ESMTPSA id x19-20020ac87ed3000000b003436103df40sm6001207qtj.8.2022.10.16.09.23.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Oct 2022 09:23:39 -0700 (PDT) From: "Joel Fernandes (Google)" <joel@joelfernandes.org> To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, frederic@kernel.org, paulmck@kernel.org, "Joel Fernandes (Google)" <joel@joelfernandes.org> Subject: [PATCH v9 08/13] rcu/rcuscale: Use call_rcu_flush() for async reader test Date: Sun, 16 Oct 2022 16:23:00 +0000 Message-Id: <20221016162305.2489629-9-joel@joelfernandes.org> X-Mailer: git-send-email 2.38.0.413.g74048e4d9e-goog In-Reply-To: <20221016162305.2489629-1-joel@joelfernandes.org> References: <20221016162305.2489629-1-joel@joelfernandes.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,URIBL_BLACK autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1746862109576523767?= X-GMAIL-MSGID: =?utf-8?q?1746862109576523767?= |
Series |
rcu: call_rcu() power improvements
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Commit Message
Joel Fernandes
Oct. 16, 2022, 4:23 p.m. UTC
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>
---
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 bbdcac1804ec..0385e9b12399 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,