From mboxrd@z Thu Jan 1 00:00:00 1970 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 CAB8C2BDC15; Mon, 3 Nov 2025 07:19:13 +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=1762154353; cv=none; b=EgooI0OwDCPfWrJWYPq1HmUskypYz8/V0xcJRJJP1rR5vw8XnHFUfFspQT101vGSmEj8LorzTv2g8plm3JPQUwH3Mghng7QGNk4s9RCxud38MNgt736ef+oxEF5MIGm01j87TcC/Pg2OggBHAeJwdkae32cs+cnhYAOtpXhxeJI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762154353; c=relaxed/simple; bh=wzU2Qnm2GHt6DLOx5HoozrHwNMWUtEvwOpzlAH8V7/A=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Jn3xUt6bGrbZYx8q6WfkAf+6Zn1advPiQjf9oq+mHncUudr4BRF7/hT0cIFDEhrd8jLhuKYenjzQ4wcqZwNiIr9a7R7Ats+JvjZtLos73qlcsoYytO7asKBVh65dhkDpO2ORMqu5G//2hthdxf6nkdmGsAQFrkq3cfvDW7qlLjc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cwySrBey; 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="cwySrBey" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41B58C19424; Mon, 3 Nov 2025 07:19:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762154353; bh=wzU2Qnm2GHt6DLOx5HoozrHwNMWUtEvwOpzlAH8V7/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cwySrBeyrHwqMf9to0lO3sOlJKkPtKOMXAsK6+2zva43tRL6JRWPA3UnfMxLCnmE+ Edx9nSmuQSQER9WZndKlYUGLPDB+K0dgFASq+JHOxPdAitsazq1mGU3689YehQNeIF bqDGfBR15LIjiGtgxU6MJ4UMcPyPiAAF6OZuO3G1mu1o+/NhEzpTas1oxfd1XsLFTS 2ksjoLtHJ/QzN3bT/LKhkVEF4prpJW/XIRH/rZSi6EuZC5BuhW4Z7ShsgF8ixl+fa+ TND3OMU8XUYiIVz86s12iGvQVfP34HqWw2uMKfAEpknNoggqoCy8jv4+5gthttbT5+ f7HgD/XHcVwCA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id E60B4CE0F65; Sun, 2 Nov 2025 14:49:49 -0800 (PST) From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org, "Paul E. McKenney" , Mathieu Desnoyers , Sebastian Andrzej Siewior , bpf@vger.kernel.org Subject: [PATCH 1/8] refscale: Exercise DEFINE_STATIC_SRCU_FAST() and init_srcu_struct_fast() Date: Sun, 2 Nov 2025 14:49:41 -0800 Message-Id: <20251102224948.3906224-1-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <19fae851-0c49-43d2-9bbf-913424641ff4@paulmck-laptop> References: <19fae851-0c49-43d2-9bbf-913424641ff4@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This commit updates the initialization for the "srcu-fast" scale type to use DEFINE_STATIC_SRCU_FAST() when reader_flavor is equal to SRCU_READ_FLAVOR_FAST. Signed-off-by: Paul E. McKenney Cc: Mathieu Desnoyers Cc: Steven Rostedt Cc: Sebastian Andrzej Siewior Cc: --- kernel/rcu/refscale.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 19841704d8f5..ece77f6d055b 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -184,6 +184,7 @@ static const struct ref_scale_ops rcu_ops = { // Definitions for SRCU ref scale testing. DEFINE_STATIC_SRCU(srcu_refctl_scale); +DEFINE_STATIC_SRCU_FAST(srcu_fast_refctl_scale); static struct srcu_struct *srcu_ctlp = &srcu_refctl_scale; static void srcu_ref_scale_read_section(const int nloops) @@ -216,6 +217,12 @@ static const struct ref_scale_ops srcu_ops = { .name = "srcu" }; +static bool srcu_fast_sync_scale_init(void) +{ + srcu_ctlp = &srcu_fast_refctl_scale; + return true; +} + static void srcu_fast_ref_scale_read_section(const int nloops) { int i; @@ -240,7 +247,7 @@ static void srcu_fast_ref_scale_delay_section(const int nloops, const int udl, c } static const struct ref_scale_ops srcu_fast_ops = { - .init = rcu_sync_scale_init, + .init = srcu_fast_sync_scale_init, .readsection = srcu_fast_ref_scale_read_section, .delaysection = srcu_fast_ref_scale_delay_section, .name = "srcu-fast" -- 2.40.1