From patchwork Wed Oct 9 12:51:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neeraj Upadhyay X-Patchwork-Id: 13828398 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 493DC19D075; Wed, 9 Oct 2024 12:51:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728478313; cv=none; b=mkMDNztwM/kJMw74fbwbVHg3Nb3GEij55Bqyr8T/K5Cml1N+u8Cl23hf2Zaa0UKDsXBrJn3n1bghQu0hk5m4GO1LE8OULQb52fOQAg36TYEIrx4YkCkqaGOPKSPU62fXrnb5wrH1R2R79M+w3qfxtN/HkE2ZF4x8p+la3r2Ehlk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728478313; c=relaxed/simple; bh=8qSnsgM8LhMwsfqVBK36j4HZgFG548kSvr6lIkRispo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=pmgnEksddVpX49mh4cKBH5bVnv9yguKcjgHLvaD6mYfMe1n0kxS/KpQbjUScxGQNP+aH2pT56tSF14evKB+XXc+KTyZGckBdywwrPGcdKzRm6d+nIvBTF83mFBctXdcvJ8T9Vj/FrtNL+C55xgVRjM3/Gin9yBtxRI5P4IkYkEM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OEEd2bL6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OEEd2bL6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8227CC4CEC5; Wed, 9 Oct 2024 12:51:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728478312; bh=8qSnsgM8LhMwsfqVBK36j4HZgFG548kSvr6lIkRispo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OEEd2bL6J6Yh6YBsyCq5m+LGHBJwL1tXjnrk7zssZzMyP59806bkeUfg2fH6FJ1nd aONa9hiDlTdYipD61Gc3YoEou7VDEd9L5b8nD9R8eUi0BkcnTDjBDcX5x8e3oRK5uw MEye2dbo1oq3MWZlGUpE5NJwCeTMghGq2+D7R0R+UozOEXr6PXCi7hnLlEDlIhryBC 99SafEdlZpV1azA9O9dOZxGImxH5GSf5IN7mdGf6sR9mgmhRaNJxWR4ZoWA8nDEo4J rO1xSxAOIkzDS66GODK3oVyP+EWfM55tjYmlubGKLoZ+r0oK+JvpB9TZFuFXog26lU /uObIQnhEidIg== From: neeraj.upadhyay@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, paulmck@kernel.org, joel@joelfernandes.org, frederic@kernel.org, boqun.feng@gmail.com, urezki@gmail.com, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang1211@gmail.com, peterz@infradead.org, neeraj.upadhyay@amd.com, Neeraj Upadhyay Subject: [PATCH v2 02/10] rcu: Make some rcu_watching_* functions global Date: Wed, 9 Oct 2024 18:21:19 +0530 Message-Id: <20241009125127.18902-3-neeraj.upadhyay@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20241009125127.18902-1-neeraj.upadhyay@kernel.org> References: <20241009125127.18902-1-neeraj.upadhyay@kernel.org> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Neeraj Upadhyay rcu_watching_snap_in_eqs() and rcu_watching_snap_stopped_since() will be used in subsequent commits by RCU-tasks to check rcu_watching state of idle tasks. So, make these functions global. Signed-off-by: Neeraj Upadhyay --- kernel/rcu/rcu.h | 4 ++++ kernel/rcu/tree.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index feb3ac1dc5d5..5fec1b52039c 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -609,6 +609,8 @@ void srcutorture_get_gp_data(struct srcu_struct *sp, int *flags, #ifdef CONFIG_TINY_RCU static inline bool rcu_watching_zero_in_eqs(int cpu, int *vp) { return false; } +static inline bool rcu_watching_snap_in_eqs(int snap) { return false; } +static inline bool rcu_watching_snap_stopped_since(int cpu, int snap) { return false; } static inline unsigned long rcu_get_gp_seq(void) { return 0; } static inline unsigned long rcu_exp_batches_completed(void) { return 0; } static inline unsigned long @@ -622,6 +624,8 @@ static inline void rcu_gp_slow_register(atomic_t *rgssp) { } static inline void rcu_gp_slow_unregister(atomic_t *rgssp) { } #else /* #ifdef CONFIG_TINY_RCU */ bool rcu_watching_zero_in_eqs(int cpu, int *vp); +bool rcu_watching_snap_in_eqs(int snap); +bool rcu_watching_snap_stopped_since(int cpu, int snap); unsigned long rcu_get_gp_seq(void); unsigned long rcu_exp_batches_completed(void); unsigned long srcu_batches_completed(struct srcu_struct *sp); diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index ea17dd2d0344..5ecbf85f157d 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -303,7 +303,7 @@ static void rcu_watching_online(void) * Return true if the snapshot returned from ct_rcu_watching() * indicates that RCU is in an extended quiescent state. */ -static bool rcu_watching_snap_in_eqs(int snap) +bool rcu_watching_snap_in_eqs(int snap) { return !(snap & CT_RCU_WATCHING); } @@ -321,7 +321,7 @@ static bool rcu_watching_snap_in_eqs(int snap) * * This is meant to be used in a loop waiting for a CPU to go through an EQS. */ -static bool rcu_watching_snap_stopped_since(int cpu, int snap) +bool rcu_watching_snap_stopped_since(int cpu, int snap) { /* * The first failing snapshot is already ordered against the accesses