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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 5651AC2D0B1 for ; Tue, 10 Dec 2019 03:42:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 220F220828 for ; Tue, 10 Dec 2019 03:42:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575949371; bh=PHgTb/RVqf6ABHSGW+fZhTKijJ/W01npBRaDZhWCjIY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yTYsTharPdGZCcGfIvOTg3TP9SMy/PzghhJnHdh2A05xGLsT5OHG2nkxoOWYQTNqA XGbeZLKW/OmD6a4cW8mnf3f6XGXzflSrRX9ynATpGhIS155Cn4MHs3WUTcqZMzc+1j x6a5J0iggKPgXONFoBHKU6fxkG8ydhEtElsqWPoM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727076AbfLJDm0 (ORCPT ); Mon, 9 Dec 2019 22:42:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:60854 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727063AbfLJDm0 (ORCPT ); Mon, 9 Dec 2019 22:42:26 -0500 Received: from paulmck-ThinkPad-P72.home (199-192-87-166.static.wiline.com [199.192.87.166]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3987A214D8; Tue, 10 Dec 2019 03:42:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575949345; bh=PHgTb/RVqf6ABHSGW+fZhTKijJ/W01npBRaDZhWCjIY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=13qQ+ydDBDxSJ9hdsKPHXcjlHGEdHewQxzZ2ja/D7/+YUMKJVXkGzST9gu1VhAyRu 3U4Buea3V/bptzfZ0hPrRF9o4NAer9UffDz+bfu8cPiaHuv3cVSZrm0Be1tBpgMnie 2ce1HcJK87vcAym3vl1yDYX4SYCDz3a7fLkXa5BU= 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, dipankar@in.ibm.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 08/12] rcutorture: Move to dynamic initialization of rcu_fwds Date: Mon, 9 Dec 2019 19:42:13 -0800 Message-Id: <20191210034217.405-8-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191210034119.GA32711@paulmck-ThinkPad-P72> References: <20191210034119.GA32711@paulmck-ThinkPad-P72> Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org From: "Paul E. McKenney" In order to add multiple call_rcu() forward-progress kthreads, it will be necessary to dynamically allocate and initialize. This commit therefore moves the initialization from compile time to instead immediately precede thread-creation time. Signed-off-by: Paul E. McKenney --- kernel/rcu/rcutorture.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index cc88ce9..6f540fe 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1686,11 +1686,7 @@ struct rcu_fwd { unsigned long rcu_launder_gp_seq_start; }; -struct rcu_fwd rcu_fwds = { - .rcu_fwd_lock = __SPIN_LOCK_UNLOCKED(rcu_fwds.rcu_fwd_lock), - .rcu_fwd_cb_tail = &rcu_fwds.rcu_fwd_cb_head, -}; - +struct rcu_fwd rcu_fwds; bool rcu_fwd_emergency_stop; static void rcu_torture_fwd_cb_hist(struct rcu_fwd *rfp) @@ -2026,6 +2022,8 @@ static int __init rcu_torture_fwd_prog_init(void) WARN_ON(1); /* Make sure rcutorture notices conflict. */ return 0; } + spin_lock_init(&rcu_fwds.rcu_fwd_lock); + rcu_fwds.rcu_fwd_cb_tail = &rcu_fwds.rcu_fwd_cb_head; if (fwd_progress_holdoff <= 0) fwd_progress_holdoff = 1; if (fwd_progress_div <= 0) -- 2.9.5