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=-6.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 64EF8C07E99 for ; Fri, 9 Jul 2021 14:06:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 400606138C for ; Fri, 9 Jul 2021 14:06:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232230AbhGIOJQ (ORCPT ); Fri, 9 Jul 2021 10:09:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:57516 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231857AbhGIOJP (ORCPT ); Fri, 9 Jul 2021 10:09:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625839589; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uLtl/5oDqf8PcrF9UEzAhu9HDJICTavDVle2PbyDR/4=; b=Mdc9VT2vEx1NIxuXYr33L1gDYymRixBs5CunJWmy8Dk6KlGYET0ls3c5t5N9Phh5AER0Va ch1UU1FYMLZ6zWT9zteFC3HKbK5bqFMzzCrkoWeBo7DWUaqYoWzCnjwZ1PKoEbBVeJ2F5Z 8u523+wkAyYgtqxEbkNjw9xqHj7iDJA= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-94-nb3E8i1eNgedJPEVt0RucQ-1; Fri, 09 Jul 2021 10:06:26 -0400 X-MC-Unique: nb3E8i1eNgedJPEVt0RucQ-1 Received: by mail-wm1-f69.google.com with SMTP id v25-20020a1cf7190000b0290197a4be97b7so4072551wmh.9 for ; Fri, 09 Jul 2021 07:06:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=uLtl/5oDqf8PcrF9UEzAhu9HDJICTavDVle2PbyDR/4=; b=tfaxAQRjiE656nM6Q1BS2ToTpNoRiJ2tU9Yl5JQun2BjWIj7eSKxcl3b8COdzu/2SV 4GxfHOt/2mGbq/1ctpo3aA40vO7fJHlnikzvOTixy//0RV17dLd1pvwJrRccf7F70rtB hw1W/oHzFFIl5OU5BBkmXyPcuTc1BMaSSp6KHD1UXBGxD46DYQeRXQj0mAbuV2uDuYwh XGB8KCBTtWZ+jGNH9rdR2cGuFRfMh/0YVeWrO/c7g/gbVOhGEvpsmI9uBqc5xfB2UXsF rRQ2sV9JWYJCfkz5E6S3eVS6i8/fT7jbhrb0QqNSEq2LPkSbRAQzTfgWTiHQsmZimUpp qXgQ== X-Gm-Message-State: AOAM533aJI8guDJ7CZZQLlpk6kFTGJ/9DIkQhpH3iX8Ux8jf7KDELgBM ruj1UjNcxj63DZEkK7/o6sf6FgOnFoP8bPbxPzreje+UiktdmBjh7OY5W4DE2f/G0Lbd7I6tJt+ CuBtJfgxmw5KU4JRPV5YAp7tl X-Received: by 2002:adf:eb43:: with SMTP id u3mr42287717wrn.83.1625839566973; Fri, 09 Jul 2021 07:06:06 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzpWcE5dh0IytYK877PjYOYMVLad+vBaNwXr7nhI1jGzSpEVmKBe+hQ/WRrn5DS63kTML60BQ== X-Received: by 2002:adf:eb43:: with SMTP id u3mr42287698wrn.83.1625839566857; Fri, 09 Jul 2021 07:06:06 -0700 (PDT) Received: from [192.168.1.136] ([79.116.5.179]) by smtp.gmail.com with ESMTPSA id z11sm5410723wru.65.2021.07.09.07.06.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Jul 2021 07:06:06 -0700 (PDT) Message-ID: Subject: Re: [PATCH v2] timers: Recalculate next timer interrupt only when necessary From: Nicolas Saenz Julienne To: He Zhe , Frederic Weisbecker Cc: anna-maria@linutronix.de, linux-kernel@vger.kernel.org, tglx@linutronix.de, Nicolas Saenz Julienne Date: Fri, 09 Jul 2021 16:06:05 +0200 In-Reply-To: <11e85cd8-40ac-09fe-e1fe-0eafa351072c@windriver.com> References: <20200723151641.12236-1-frederic@kernel.org> <20210708153620.GA6716@lothringen> <20210709084303.GA17239@lothringen> <11e85cd8-40ac-09fe-e1fe-0eafa351072c@windriver.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.40.2 (3.40.2-1.fc34) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Frederic, Zhe, I've stumbled upon an issue on my x86_64 nohz_full setups which looks a lot like Zhe's. I've got a potential fix, I'll post it as a reply to this mail. Regards, Nicolas