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=-19.3 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 1679FC43381 for ; Wed, 6 Jan 2021 04:50:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D91BA22CE3 for ; Wed, 6 Jan 2021 04:50:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727126AbhAFEud (ORCPT ); Tue, 5 Jan 2021 23:50:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:33366 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727102AbhAFEuc (ORCPT ); Tue, 5 Jan 2021 23:50:32 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D5082230FC; Wed, 6 Jan 2021 04:48:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1609908539; bh=DIO0eY77jlMD4O2dMKMXcweDuDIG/CCwsKDWfgWKbkQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mRftl8KVPmN72nvp8w4f2Wqc9fNnVybCxuLCBxApslUGrgFEkRLiLCS9ONBlLn+3a Rn/bPg/UUcijbKjNo3yUEGlqFoHP9Da6Iyoq6Q+fehsno8bgWPIZ+eScTuO0bk32Vy l8HkmxwNJ4c+o6kJl1dOkwp5z/bPvC465t7771oFPVuB1D5RO++udge+Xy5pww9NMN 7DM6K+LZ8+AtVtBrMenQRD2TAuUPaqYN8tOWQDekYqpToHc5VCM0ZrCVpWRSnfEUxU jLEAwJ81aigPHEhvo/xEYz5GqUPgEXVu6467FvIv7QooJBGd+wi2RRXrnLpAaEAD/W yUU5WbKT8SLSA== 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 19/21] rcu/nocb: Add nocb CB kthread list to show_rcu_nocb_state() output Date: Tue, 5 Jan 2021 20:48:51 -0800 Message-Id: <20210106044853.20812-19-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20210106013950.GA14663@paulmck-ThinkPad-P72> References: <20210106013950.GA14663@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org From: "Paul E. McKenney" This commit improves debuggability by indicating laying out the order in which rcuoc kthreads appear in the ->nocb_next_cb_rdp list. Signed-off-by: Paul E. McKenney --- kernel/rcu/tree_plugin.h | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 5ee1113..bc63a6b 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -2730,6 +2730,7 @@ static void show_rcu_nocb_state(struct rcu_data *rdp) sprintf(bufr, "%ld", rsclp->gp_seq[RCU_NEXT_READY_TAIL]); pr_info(" CB %d^%d->%d %c%c%c%c%c%c F%ld L%ld C%d %c%c%s%c%s%c%c q%ld %c CPU %d%s\n", rdp->cpu, rdp->nocb_gp_rdp->cpu, + rdp->nocb_next_cb_rdp ? rdp->nocb_next_cb_rdp->cpu : -1, "kK"[!!rdp->nocb_cb_kthread], "bB"[raw_spin_is_locked(&rdp->nocb_bypass_lock)], "cC"[!!atomic_read(&rdp->nocb_lock_contended)], -- 2.9.5