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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0F3DC433FE for ; Mon, 31 Jan 2022 01:46:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357311AbiAaBqu (ORCPT ); Sun, 30 Jan 2022 20:46:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230269AbiAaBqs (ORCPT ); Sun, 30 Jan 2022 20:46:48 -0500 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A1C2C061714; Sun, 30 Jan 2022 17:46:48 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id e16so10885668pgn.4; Sun, 30 Jan 2022 17:46:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2cW2Lx4AI8MPH4Bk7KXj4Vkw5vzZl1ppTAqKUBR+xkU=; b=di32sGTYWtFxvcNV7gCw2VmdXnsDRngMicftxh+8EjZE6gpb7tN6DJZMCuZRsEEbD/ JUdpGLJKHjdRbpzM0MWLnd1kPW03aNsegwJsWU0jIw1Yj6F5bdAd333iH9X+IwQuLOIf JT3z0BD0YIEc+a3Zusez0XBzJ0/dSTUs28POo6p9a6T81wXr8aX4Mz/ll8bb3lWlRne9 dNO/Bf5ex6mNBAXc12cpcX2UpV4NAvfPAypCx+lkEKSqLBf64MmYGJe8LDsFRhBGtDAu gE6LDBqVvwxucKPxGas8FnsWgUVBlI6OkBOjGhx54iknNXISVrATVWZwNmIT+R/UMs7r 9gsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2cW2Lx4AI8MPH4Bk7KXj4Vkw5vzZl1ppTAqKUBR+xkU=; b=QRfmts7w7D6qZutOA8BPbJhhdDN5zk/gpbc3C0MqS0jfE2ncWLpmQCr0X5+tA1mDmR CJkcBKfcAnxRxhL1og/1Zj/Ac6MXotvm9RyAr0Q7OT8qoyyFvEXswoX1Ab0M5BW5LuI5 +bKzEvNuVgKJjoXXxO0kUfQLzbtBCFHqusKqcyWp5Gnq0IfmYowKZtPQZzwaXV1Hnetb sMbs+YOsGWbBJ9iUDFvStKagqE5uAlvdMxpUVlORrI5pBk9datZ1MfmBscrpIkOz3hNm 6a0YOEazryt2KRAcwDVXsE/fhNO4KFQJoKBvylM9GjnV9OlQiYB0PuL99mIRQ2HqG5wb WuLw== X-Gm-Message-State: AOAM532qAlAf8ejkHutNPBhe4lDrruefyNBzamPyvnwfhY57ihQITYmQ AMjR69mXeOQptJD0vjXj6PY= X-Google-Smtp-Source: ABdhPJxjS7AM92NRmg0JyGGcwR5KFUYFuWzwtfbLZUdnNRXDZ2kOIuGTNdOkF67TRR1wqVEnmDYw7g== X-Received: by 2002:a05:6a00:1805:: with SMTP id y5mr18664694pfa.6.1643593607472; Sun, 30 Jan 2022 17:46:47 -0800 (PST) Received: from localhost (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id c20sm15361033pfn.190.2022.01.30.17.46.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 Jan 2022 17:46:47 -0800 (PST) From: Yury Norov To: Thomas Gleixner , Peter Zijlstra , Valentin Schneider , Vincent Donnefort , Ingo Molnar , YueHaibing , Yuan ZhaoXiong , Randy Dunlap , Mathieu Desnoyers , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Yury Norov Subject: [PATCH] kernel/cpu.c: fix init_cpu_online Date: Sun, 30 Jan 2022 17:46:48 -0800 Message-Id: <20220131014648.941629-1-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org cpu_online_mask has an associate counter of online cpus, which must be initialized in init_cpu_online(). Fixes: 0c09ab96fc82010 (cpu/hotplug: Cache number of online CPUs) Signed-off-by: Yury Norov --- kernel/cpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/cpu.c b/kernel/cpu.c index 407a2568f35e..cd7605204d4d 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -2616,6 +2616,7 @@ void init_cpu_possible(const struct cpumask *src) void init_cpu_online(const struct cpumask *src) { cpumask_copy(&__cpu_online_mask, src); + atomic_set(&__num_online_cpus, cpumask_weight(cpu_online_mask)); } void set_cpu_online(unsigned int cpu, bool online) -- 2.30.2