Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp4695586imm; Tue, 9 Oct 2018 03:57:10 -0700 (PDT) X-Google-Smtp-Source: ACcGV60I+tLqh4yTxz9tgXiYfvjLPIvbbOI9bYQMyb9U3y6NHJyYqNV392rfh7viOJBqX6zywi/J X-Received: by 2002:a63:6883:: with SMTP id d125-v6mr19871433pgc.451.1539082630944; Tue, 09 Oct 2018 03:57:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539082630; cv=none; d=google.com; s=arc-20160816; b=wP6MJXP92QL/t0NiTUsTxArq6zHtaEN0HAghw15iqJZlgNp5qgp2BhicYQIYBC5rqI 7wHmnyLCEq3FCIfjCGwBH0YMS+aznCjI+K18/Isb3OOU/rvMfFTqEYMFWACekRFbvkCv 8FirtHjSlyg1/4Dk3y/P5E15ek1XGHLIoH1wDuHkrFnGN5tEwO30SKKYef9oKnajyIFv NeVXzoJXitpgb/QjemUQTAxonz4bFl6z8/Whi+JQFAzk0FiCsIZjJtono+ZaVjFr9bui rwt67onH+78QH8awE2wkuQZC+PJsjM5JesxyGLH+nFv2O7DJBRvWy1kadp2o/3H4XA7R bGxw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=AmapgDY3sV/C9ObTpyeepuaPV39Ke6Bdan8yPtbgNzE=; b=scVsS8rGKQxt38pAiwHkm5CcCJ+QVV1OhDMH4xQXKdVXexhcHpd6Vink7NA3DfMugJ R8yevLqzAbB1DPacCMRXGKkpTD7txzNWZqVv3oykiSe6XEFE3TdPTx67tf9Vs1DuOrV9 ByYfk7h65MGVTQ78wNRuBTXthWInE5PqtwhbZH/L29r28nbIcQHRA0peOGNNzdTYpHzw a3+tzyPvdwkIbcIrTsunad37zPWJF3YX+me+YPrl2FM0+ETx7Cf5Ub9Xuowb+ZuET7vi NqYXtYsKEt/k57rnlNaHZ/J0Ser9brjobHArvSOVsxIrzD5sa/rS8ZGsN34XA1sxGbNm cnMg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 138-v6si19425059pgc.218.2018.10.09.03.56.56; Tue, 09 Oct 2018 03:57:10 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726647AbeJISMu (ORCPT + 99 others); Tue, 9 Oct 2018 14:12:50 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:43057 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726103AbeJISMu (ORCPT ); Tue, 9 Oct 2018 14:12:50 -0400 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1g9pgc-0001pc-4L; Tue, 09 Oct 2018 12:56:22 +0200 Date: Tue, 9 Oct 2018 12:56:22 +0200 From: Sebastian Andrzej Siewior To: Andrea Parri Cc: Julia Cartwright , Ingo Molnar , Thomas Gleixner , Peter Zijlstra , "linux-kernel@vger.kernel.org" , "linux-rt-users@vger.kernel.org" , Steffen Trumtrar , Tim Sander , Guenter Roeck Subject: Re: [PATCH 1/2] kthread: convert worker lock to raw spinlock Message-ID: <20181009105621.plqufigiauieir7z@linutronix.de> References: <20181005181035.GA19828@andrea> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20181005181035.GA19828@andrea> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018-10-05 20:10:35 [+0200], Andrea Parri wrote: > > Clearly not my topic..., but out of curiosity: What do you mean by > "well-bounded" and "minimal"? Can you maybe point me to some doc.? it means that the lock is not held for an arbitrary amount of time like by processing a list with thousand items. Well-bounded would mean not process more than one or five (or so) at a time. > Andrea Sebastian