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=ham 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 F3DEEC433DB for ; Wed, 6 Jan 2021 17:18:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEBD523106 for ; Wed, 6 Jan 2021 17:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727910AbhAFRSg (ORCPT ); Wed, 6 Jan 2021 12:18:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:60800 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726740AbhAFRSe (ORCPT ); Wed, 6 Jan 2021 12:18:34 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 060D92313F; Wed, 6 Jan 2021 17:17:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1609953434; bh=w8IVjcpkGX23ZnvKB1fiGk04ow+NnO20l/fNzsdfXMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DyRG8lTxrWmfD1G11pUndjIHg+ibWVqWgBEQmWqvVDajw8N2coCZ201Ny0nZs6Lod 49/ORk42meizal5UN4Xg1rVUGvtVfehQQcTntYB0tW0QGBkWUy73AUcWpvD2dVmTTd hXPZNhnajdCCuGPSy8OJQpewnls5pBxxuf+7qHhIuSMGCXpEm4yKiF4V9hEf9YWAd9 1tEwWEF0DvqtA++lmRKMhtAnp5PPHoO2KIXwKAsz1Ktr/BUjw/O1ikMmFfHxVBo5Vn fZWbUF/n2JsAV7IB/WzfF4CSNGC5xUzyapLlmT7rXfpt6HsJaOsQUut+5yD1q1lAuH crhdWEc/DzKbA== 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 11/17] torture: Make refscale throttle high-rate printk()s Date: Wed, 6 Jan 2021 09:17:04 -0800 Message-Id: <20210106171710.22239-11-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20210106171532.GA20769@paulmck-ThinkPad-P72> References: <20210106171532.GA20769@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" This commit adds a short delay for verbose_batched-throttled printk()s to further decrease console flooding. Signed-off-by: Paul E. McKenney --- kernel/rcu/refscale.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 3da246f..02dd976 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -52,8 +52,10 @@ static atomic_t verbose_batch_ctr; do { \ if (verbose && \ (verbose_batched <= 0 || \ - !(atomic_inc_return(&verbose_batch_ctr) % verbose_batched))) \ + !(atomic_inc_return(&verbose_batch_ctr) % verbose_batched))) { \ + schedule_timeout_uninterruptible(1); \ pr_alert("%s" SCALE_FLAG s, scale_type, ## x); \ + } \ } while (0) #define VERBOSE_SCALEOUT_ERRSTRING(s, x...) \ -- 2.9.5