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=-1.1 required=3.0 tests=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 C9202C433E1 for ; Mon, 29 Jun 2020 18:55:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A7008206A5 for ; Mon, 29 Jun 2020 18:55:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="X8x6aysV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728686AbgF2Szo (ORCPT ); Mon, 29 Jun 2020 14:55:44 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:25281 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729992AbgF2SzU (ORCPT ); Mon, 29 Jun 2020 14:55:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593456919; 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: in-reply-to:in-reply-to:references:references; bh=IRNIV4x43P6HErryarebd5FQz8VopUKzf076Ub4cEhw=; b=X8x6aysVFVe8YFVhCEmUfJRQ0p8IteM8r0KfEtdIzRJXebemoPOpgVk9PmFw5+q1RAqeiE dlMu7KrzsZ4zc4fdXbNYAnrQuME4wPHLgFAbnxqe/rXB7sTU6CZKGfqYUivNX0byQ3+V6a vntnh5Ohk0wTgsLP66a1K4lHuNxKu08= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-267-nXMt7SjSP_-NzPh9JE9AVQ-1; Mon, 29 Jun 2020 08:54:02 -0400 X-MC-Unique: nXMt7SjSP_-NzPh9JE9AVQ-1 Received: by mail-wr1-f69.google.com with SMTP id o25so16449624wro.16 for ; Mon, 29 Jun 2020 05:54:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=IRNIV4x43P6HErryarebd5FQz8VopUKzf076Ub4cEhw=; b=UTlfr0JM7ypPzQLwCXbWQkuFQDA/BhjsEGc9Zf0WL5Nf0vogAVNy4cmH+x9xVdvxtl xF+R/KgSDy5F7TomFiYz/1etcN90yx+vbDD12exUywI1QYyeURM2J/GX2nDXi6W+Msq2 dK23oIEzz5rjNugfp9yl7cz2ie9tZExBAvESlrYLePeqR8dMpwv1bcZ067cefpycvzY8 +0g3iwguvzIJpFHTu0KRr8oKTINQ/YuVRU3bVI8/PG0xjEOnwbzcNa4D6eakjmpQ/FiS csvMhPvYviug8wbTyxn8oNlobPSgOwRvjGYuUk1ppAN1HPulDt1bZgUxe7SGAqGv0LkU y1YQ== X-Gm-Message-State: AOAM533ZWL8v87UPCPC/GhBJWU2LNk2oSpnA/AUwcwkv7CmNFgkXDCll Jy1StnKd1TFgvcLQusHxTWCWYdYeF/7mhiuMAmMhv8CJOecvT6Ru2+x276k7jRqwh8/mOGX4Y0p w/tlyrKWkrDA8TTPjoe5v2ObOqUY= X-Received: by 2002:a1c:5418:: with SMTP id i24mr16011214wmb.47.1593435239276; Mon, 29 Jun 2020 05:53:59 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyCGDvr+eGI0QiQBdG3VZDI0bqn2iCa/GHXZRlpJW0cXI/cAOmdxZFkRYH9FPz3OcQeGVb3lA== X-Received: by 2002:a1c:5418:: with SMTP id i24mr16011199wmb.47.1593435239033; Mon, 29 Jun 2020 05:53:59 -0700 (PDT) Received: from localhost.localdomain ([151.29.8.241]) by smtp.gmail.com with ESMTPSA id x13sm50975152wre.83.2020.06.29.05.53.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2020 05:53:58 -0700 (PDT) Date: Mon, 29 Jun 2020 14:53:56 +0200 From: Juri Lelli To: Frederic Weisbecker Cc: fweisbec@gmail.com, tglx@linutronix.de, mingo@kernel.org, linux-rt-users@vger.kernel.org, peterz@infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared Message-ID: <20200629125356.GB9670@localhost.localdomain> References: <20200520164925.GM10078@localhost.localdomain> <20200520170215.GB8800@lenoir> <20200520184710.GO10078@localhost.localdomain> <20200521004443.GB15455@lenoir> <20200521170020.GQ10078@localhost.localdomain> <20200615210743.GA21371@lenoir> <20200616065757.GA446382@localhost.localdomain> <20200616204649.GA4914@lenoir> <20200629123651.GA9670@localhost.localdomain> <20200629124207.GA6088@lenoir> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200629124207.GA6088@lenoir> Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org On 29/06/20 14:42, Frederic Weisbecker wrote: > On Mon, Jun 29, 2020 at 02:36:51PM +0200, Juri Lelli wrote: > > Hi, > > > > On 16/06/20 22:46, Frederic Weisbecker wrote: > > > On Tue, Jun 16, 2020 at 08:57:57AM +0200, Juri Lelli wrote: > > > > Sure. Let me know if you find anything. > > > > > > I managed to reproduce. With "threadirqs" and without > > > "tsc=reliable". I see tons of spurious TIMER softirqs. > > > Investigation begins! I'll let you know. > > > > Gentle ping. Any new findings about this issue? > > Yep, I'm working on a series to reduce timer softirqs. I'm almost > done, should post it soon. Great! Looking forward to it. Best, Juri