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=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 B610BC18E5B for ; Mon, 16 Mar 2020 16:32:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8AF50206C0 for ; Mon, 16 Mar 2020 16:32:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=joelfernandes.org header.i=@joelfernandes.org header.b="BZFrWGdL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732140AbgCPQcf (ORCPT ); Mon, 16 Mar 2020 12:32:35 -0400 Received: from mail-qv1-f67.google.com ([209.85.219.67]:45649 "EHLO mail-qv1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732044AbgCPQcf (ORCPT ); Mon, 16 Mar 2020 12:32:35 -0400 Received: by mail-qv1-f67.google.com with SMTP id h20so5255269qvr.12 for ; Mon, 16 Mar 2020 09:32:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=R+EJ0NlYqKDTdXP5FIK6OXNmAa652KgdhB+MYl0wXpU=; b=BZFrWGdL8/GnNyd7hwSMmMklvJmb6Va5pJ/PE02Eh8fvKGMxfLvo13T3DctcEMQAUr Nfouqu26mWmQyNmvm48wTg3ZY43KQH20dH49t/A1xBDx/UB191/kQw9wIWy4RuuWTV6B gbeyymWhmNd6weREuQiT2NvvShO75hbAyiync= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=R+EJ0NlYqKDTdXP5FIK6OXNmAa652KgdhB+MYl0wXpU=; b=Mg7q4qhIrU4oGmxq1aKA6qKgqOP6wzg+LWMy+CjFdm7295A4UFetvteO+K5gTKxrUj 6kFo9ZxIYF2+PZChG7smynzUdBW51KKxQATEywnQNTMRiAsm9dCxBISj9ZuOi7Vsb4+m wLkki8N9Xes8Wc4dvPDpXCAuYUxsoqeOZiB4QTuoYDavCJZEon+SY6ocTbsoX8CdJrVH WjogiEmD/wQRlUYEnTWECbX0Bo5JpbCp05yzoGhywFBpQ20XyLkRTc341ANcHT2ZoCK7 HDl3/0skh6TN7PNdI7LQfTP9ADKENVQAiRJok8fTlwavXlaXD9UOqih/matF4vnqcGmy hgaw== X-Gm-Message-State: ANhLgQ1JyWENiJBw3GSmsTXKTNtcXRcMDH84l83AHvfoXzEmBlheab3I zAqrXtPwPOz372P/niWSKW0Kig== X-Google-Smtp-Source: ADFU+vuuX+NpDcguWehotUOXD5p8DVgzSaAjvOlrBERaveVbuKnU0fKd19hdYfQTfniLZs6BJ9fN4Q== X-Received: by 2002:ad4:4802:: with SMTP id g2mr584866qvy.95.1584376353712; Mon, 16 Mar 2020 09:32:33 -0700 (PDT) Received: from joelaf.cam.corp.google.com ([2620:15c:6:12:9c46:e0da:efbf:69cc]) by smtp.gmail.com with ESMTPSA id y127sm84139qkb.76.2020.03.16.09.32.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Mar 2020 09:32:33 -0700 (PDT) From: "Joel Fernandes (Google)" To: linux-kernel@vger.kernel.org Cc: "Joel Fernandes (Google)" , Davidlohr Bueso , Josh Triplett , Lai Jiangshan , Mathieu Desnoyers , "Paul E. McKenney" , rcu@vger.kernel.org, Steven Rostedt , urezki@gmail.com Subject: [PATCH v2 rcu-dev 1/3] rcuperf: Add ability to increase object allocation size Date: Mon, 16 Mar 2020 12:32:26 -0400 Message-Id: <20200316163228.62068-1-joel@joelfernandes.org> X-Mailer: git-send-email 2.25.1.481.gfbce0eb801-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org This allows us to increase memory pressure dynamically using a new rcuperf boot command line parameter called 'rcumult'. Signed-off-by: Joel Fernandes (Google) --- The Series v1->v2 only has added a new patch (3/3). kernel/rcu/rcuperf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/rcuperf.c b/kernel/rcu/rcuperf.c index a4a8d097d84d9..16dd1e6b7c09f 100644 --- a/kernel/rcu/rcuperf.c +++ b/kernel/rcu/rcuperf.c @@ -88,6 +88,7 @@ torture_param(bool, shutdown, RCUPERF_SHUTDOWN, torture_param(int, verbose, 1, "Enable verbose debugging printk()s"); torture_param(int, writer_holdoff, 0, "Holdoff (us) between GPs, zero to disable"); torture_param(int, kfree_rcu_test, 0, "Do we run a kfree_rcu() perf test?"); +torture_param(int, kfree_mult, 1, "Multiple of kfree_obj size to allocate."); static char *perf_type = "rcu"; module_param(perf_type, charp, 0444); @@ -635,7 +636,7 @@ kfree_perf_thread(void *arg) } for (i = 0; i < kfree_alloc_num; i++) { - alloc_ptr = kmalloc(sizeof(struct kfree_obj), GFP_KERNEL); + alloc_ptr = kmalloc(kfree_mult * sizeof(struct kfree_obj), GFP_KERNEL); if (!alloc_ptr) return -ENOMEM; @@ -722,6 +723,8 @@ kfree_perf_init(void) schedule_timeout_uninterruptible(1); } + pr_alert("kfree object size=%lu\n", kfree_mult * sizeof(struct kfree_obj)); + kfree_reader_tasks = kcalloc(kfree_nrealthreads, sizeof(kfree_reader_tasks[0]), GFP_KERNEL); if (kfree_reader_tasks == NULL) { -- 2.25.1.481.gfbce0eb801-goog