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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 D3E62C43600 for ; Tue, 20 Apr 2021 00:01:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BB7661354 for ; Tue, 20 Apr 2021 00:01:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232760AbhDTACI (ORCPT ); Mon, 19 Apr 2021 20:02:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232527AbhDTACH (ORCPT ); Mon, 19 Apr 2021 20:02:07 -0400 Received: from mail-qk1-x734.google.com (mail-qk1-x734.google.com [IPv6:2607:f8b0:4864:20::734]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E6EFC06174A; Mon, 19 Apr 2021 17:01:37 -0700 (PDT) Received: by mail-qk1-x734.google.com with SMTP id o5so37770336qkb.0; Mon, 19 Apr 2021 17:01:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2dNsqeGv2CjMAPvl9VxW5Vyc9Hyz/R+VIVig8yMnDck=; b=Z2ZTfD+JpoBTssxkLMiPLdClzlrctpjggkVNnx0dCA7dTToOxMZxNyOII8HB26xsq5 tLVtg/tlVgSKbLzl2THozeAu0WTSTk5N7Qkd3jS0uVsEvHLocrqKQB8YVFD7DAAI6EYG 14ZhLoPGyoOB8Or6GypLqg8L905dxpekkA2fhRxld0LX7YSKLj4N9PZdVXq7cFsXnhfI ZDvPW1zctUkCma2JwEv7z17tzmVMKYevyD4ylwq6jpuNlsWoY6Un2Srgrymx4yNwEn3h 4ux6SRYOECy52PPBka67LbQ+i6wTpp/hRAb3rdxSy+95z/0IeYpJXbzD+NYvV+g5H/Nt wBow== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=2dNsqeGv2CjMAPvl9VxW5Vyc9Hyz/R+VIVig8yMnDck=; b=dm7ij4opyCbkR7oDFtE0ghUyeSqkMeanhZ9625iQJWgPNt6itSZv/SOJd5j8jig7fE z/DIg7srLkPJooAJO4OpuDBuqJzIqc6FqQ01+nFvQybk4BjZA+xyn3rV91VduPNe8Xk2 H4xGjf7KtqLhewYvoakirHFEHIS74g4WcgE9eak2/Q2Sm4IzMQeLN+qkStWAprhXij1J kroxIVBpPULAYAgv+knQhu8O0wqi2TXpj7uS3UGbqK8hyy4dfZfwGxU+I3GCbbGXONGs FJIfsbn3ipD3h651Kt12Jajv7yCOno0PFDYyF1s2bsHx4PTM1GAy5xwz6EidDBIjLR8G rijg== X-Gm-Message-State: AOAM531mAAfNVukmBmc6hzzqGHw0xicGT93cYi1ty+jH/nLFsUxQnN3q y9r3Hnm8pH/G/hyGwX85gAi2cxJZXB0= X-Google-Smtp-Source: ABdhPJx7tyWynZK0k4yh68/qfQE4XWe9FMG5MBiP5D/eiR1cGPghkGtEfumVUhD2jFc/ILzy+a72Nw== X-Received: by 2002:a05:620a:a19:: with SMTP id i25mr2028337qka.416.1618876896413; Mon, 19 Apr 2021 17:01:36 -0700 (PDT) Received: from localhost ([207.98.216.60]) by smtp.gmail.com with ESMTPSA id b23sm229838qtp.17.2021.04.19.17.01.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 17:01:36 -0700 (PDT) From: Yury Norov To: linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-doc@vger.kernel.org, Andrew Morton , "Paul E. McKenney" Cc: Yury Norov , Andy Shevchenko , Joel Fernandes , Jonathan Corbet , Lai Jiangshan , Mathieu Desnoyers , Palmer Dabbelt , Paul Gortmaker , Randy Dunlap , Rasmus Villemoes , Steven Rostedt Subject: [PATCH 2/2] rcu/tree_plugin: don't handle the case of 'all' CPU range Date: Mon, 19 Apr 2021 17:01:31 -0700 Message-Id: <20210420000131.21038-3-yury.norov@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210420000131.21038-1-yury.norov@gmail.com> References: <20210420000131.21038-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org The 'all' semantics is now supported by the bitmap_parselist() so we can drop supporting it as a special case in RCU code. This patch does not add any functional changes for existing users. Signed-off-by: Yury Norov --- kernel/rcu/tree_plugin.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 464b16132866..334eaf4d561f 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1511,13 +1511,10 @@ static void rcu_cleanup_after_idle(void) static int __init rcu_nocb_setup(char *str) { alloc_bootmem_cpumask_var(&rcu_nocb_mask); - if (!strcasecmp(str, "all")) /* legacy: use "0-N" instead */ + if (cpulist_parse(str, rcu_nocb_mask)) { + pr_warn("rcu_nocbs= bad CPU range, all CPUs set\n"); cpumask_setall(rcu_nocb_mask); - else - if (cpulist_parse(str, rcu_nocb_mask)) { - pr_warn("rcu_nocbs= bad CPU range, all CPUs set\n"); - cpumask_setall(rcu_nocb_mask); - } + } return 1; } __setup("rcu_nocbs=", rcu_nocb_setup); -- 2.25.1