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[34.150.221.228]) by smtp.gmail.com with ESMTPSA id 1-20020ac85901000000b0035cf5edefa6sm11793875qty.56.2022.10.03.19.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Oct 2022 19:42:24 -0700 (PDT) From: "Joel Fernandes (Google)" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, rushikesh.s.kadam@intel.com, urezki@gmail.com, neeraj.iitr10@gmail.com, frederic@kernel.org, paulmck@kernel.org, rostedt@goodmis.org, youssefesmat@google.com, surenb@google.com, "Joel Fernandes (Google)" Subject: [PATCH v7 07/11] rcu/sync: Use call_rcu_flush() instead of call_rcu Date: Tue, 4 Oct 2022 02:41:53 +0000 Message-Id: <20221004024157.2470238-8-joel@joelfernandes.org> X-Mailer: git-send-email 2.38.0.rc1.362.ged0d419d3c-goog In-Reply-To: <20221004024157.2470238-1-joel@joelfernandes.org> References: <20221004024157.2470238-1-joel@joelfernandes.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 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 autolearn=ham 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: X-Mailing-List: linux-kernel@vger.kernel.org call_rcu() changes to save power will slow down rcu sync. Use the call_rcu_flush() API instead which reverts to the old behavior. Signed-off-by: Joel Fernandes (Google) --- kernel/rcu/sync.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/sync.c b/kernel/rcu/sync.c index 5cefc702158f..bdce3b5d7f71 100644 --- a/kernel/rcu/sync.c +++ b/kernel/rcu/sync.c @@ -44,7 +44,7 @@ static void rcu_sync_func(struct rcu_head *rhp); static void rcu_sync_call(struct rcu_sync *rsp) { - call_rcu(&rsp->cb_head, rcu_sync_func); + call_rcu_flush(&rsp->cb_head, rcu_sync_func); } /** -- 2.38.0.rc1.362.ged0d419d3c-goog