From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0010C41620 for ; Thu, 4 Mar 2021 01:09:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A322864EC4 for ; Thu, 4 Mar 2021 01:09:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355386AbhCDBD5 (ORCPT ); Wed, 3 Mar 2021 20:03:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:48838 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1450980AbhCDA0u (ORCPT ); Wed, 3 Mar 2021 19:26:50 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5653D64E67; Thu, 4 Mar 2021 00:26:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1614817594; bh=wniLB1TxgvumUojHEAHMXuGZIzDZFhceB41We0iTPwI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=puY7oayPLWaX13rkWvOS8SGPyL5epEGzVV8CM64rFodTHzgtaZLgxRvshoFnUKjjU W0XIXVKcUfh7q+y+fSQHZQf2VI0mMzlpk51yAAM3dVsh0S/exZbAkLPo4iKMQf1y9Q 15vxQs0T5lIVh5mGElbJtCR4XNR9C3YtUhQOhIji0GCXvombXrnECwirPFiWPzl+aY p3rVHg80jgQaz1OHBN914sNrVfUIdx7qMslJarDGIcBffqtxZVBQFflOMyT+9yspR0 cME+2btPPSI81znZv0ZALxAGUsFZRoq+sgIp4E/MuGrjsJiDAGxB0RhBeggKdTgvdY x4OXhLUdywh0A== From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 3/3] rcutorture: Test start_poll_synchronize_rcu() and poll_state_synchronize_rcu() Date: Wed, 3 Mar 2021 16:26:32 -0800 Message-Id: <20210304002632.23870-3-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20210304002605.GA23785@paulmck-ThinkPad-P72> References: <20210304002605.GA23785@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" This commit causes rcutorture to test the new start_poll_synchronize_rcu() and poll_state_synchronize_rcu() functions. Because of the difficulty of determining the nature of a synchronous RCU grace (expedited or not), the test that insisted that poll_state_synchronize_rcu() detect an intervening synchronize_rcu() had to be dropped. Signed-off-by: Paul E. McKenney --- kernel/rcu/rcutorture.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 99657ff..956e6bf 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -494,6 +494,8 @@ static struct rcu_torture_ops rcu_ops = { .sync = synchronize_rcu, .exp_sync = synchronize_rcu_expedited, .get_gp_state = get_state_synchronize_rcu, + .start_gp_poll = start_poll_synchronize_rcu, + .poll_gp_state = poll_state_synchronize_rcu, .cond_sync = cond_synchronize_rcu, .call = call_rcu, .cb_barrier = rcu_barrier, @@ -1223,14 +1225,6 @@ rcu_torture_writer(void *arg) WARN_ON_ONCE(1); break; } - if (cur_ops->get_gp_state && cur_ops->poll_gp_state) - WARN_ONCE(rcu_torture_writer_state != RTWS_DEF_FREE && - !cur_ops->poll_gp_state(cookie), - "%s: Cookie check 2 failed %s(%d) %lu->%lu\n", - __func__, - rcu_torture_writer_state_getname(), - rcu_torture_writer_state, - cookie, cur_ops->get_gp_state()); } WRITE_ONCE(rcu_torture_current_version, rcu_torture_current_version + 1); @@ -1589,7 +1583,7 @@ static bool rcu_torture_one_read(struct torture_random_state *trsp, long myid) preempt_enable(); if (cur_ops->get_gp_state && cur_ops->poll_gp_state) WARN_ONCE(cur_ops->poll_gp_state(cookie), - "%s: Cookie check 3 failed %s(%d) %lu->%lu\n", + "%s: Cookie check 2 failed %s(%d) %lu->%lu\n", __func__, rcu_torture_writer_state_getname(), rcu_torture_writer_state, -- 2.9.5