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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, 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 D7DC0C31E40 for ; Tue, 6 Aug 2019 21:40:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A51B321874 for ; Tue, 6 Aug 2019 21:40:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="bqB7pni7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728960AbfHFVke (ORCPT ); Tue, 6 Aug 2019 17:40:34 -0400 Received: from mail-qk1-f196.google.com ([209.85.222.196]:36008 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729371AbfHFVka (ORCPT ); Tue, 6 Aug 2019 17:40:30 -0400 Received: by mail-qk1-f196.google.com with SMTP id g18so64175704qkl.3 for ; Tue, 06 Aug 2019 14:40:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :organization:mime-version:content-transfer-encoding; bh=Js86RGa+7gv8Dz+uRj1Z85NVpKzURiNKiRWdZZpNzpY=; b=bqB7pni758j//HeQjWeQWyiOkiio/33jFDo5D/Rv43HC0kMCmA5p2jGfzO94R2MA88 vL5PEaVpJPJLw6FKGxxHf3bsrOfsqZi1ED9Iwni8F9f28HbFNdfGl417EMsohc4D89Do 5A2M4b8qmq9OHs17lIwFmC47xvsrrFhDGBBQKRkoYDTgEbinjFDvPDorGbk9IXR4GPMx /1cbfnsFSxcrAnqgh9Pv2xIuRA/8gBCoQ/X6NHVYHV4PSV54LQ2iY0Uuq1PtYNiVFSAx U6l1ta4OkHR2G9J5T9iFhoO8OwpjSEq3ovytdwQup92QaJfsMXvujUcHayqnIm1nHNeo ZzFQ== 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:in-reply-to :references:organization:mime-version:content-transfer-encoding; bh=Js86RGa+7gv8Dz+uRj1Z85NVpKzURiNKiRWdZZpNzpY=; b=fgYk3LVIfYs642NOhfQLFaxZMsjGCxv4oUZOToEMPfcA/Zk1BOS80KNNoz/oc8Cp4o KlVrOVia2b/QbLRydS/1VHCuRT8+uRUw3vylOAAlGgbJdpxy6gqlcHPSSvHwWNKJzygn vz2cMvHINECqEYe5W+mxzIwfmkwJtF2IDHo9ZnUSz9MpQX04nTXHwqQ9HbGFHYPp3JGw sNQc+r4dkVDxaghAimhPuUjyDHa8KgsJPRWBB4V9qyXroNJ7KJLrtX57IEoaDjdqQwAD w7u2fu2nyi4AnK6hhS6rO36AewF1LZ3pClK7de9ug+mtRwE96oKlQNn9YN771B1ZusCy ZP0A== X-Gm-Message-State: APjAAAWbJOjraRkKRMYavznA/ebfM812exMwoU6A0z7lbQtxAv6oY/rU vk1nEyF406+22pwAhYWMqD3c2g== X-Google-Smtp-Source: APXvYqx2q+8HP8EC16vCqUFUk+3+NZe8oYqCl8kwmI9uG79YCv0SXk/bLnAw8YF+vBdK7leiGMQEMw== X-Received: by 2002:a37:c81:: with SMTP id 123mr740898qkm.300.1565127629072; Tue, 06 Aug 2019 14:40:29 -0700 (PDT) Received: from cakuba.netronome.com ([66.60.152.14]) by smtp.gmail.com with ESMTPSA id e7sm36124885qtp.91.2019.08.06.14.40.28 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 06 Aug 2019 14:40:28 -0700 (PDT) Date: Tue, 6 Aug 2019 14:40:03 -0700 From: Jakub Kicinski To: Hayes Wang Cc: , , , Subject: Re: [PATCH net-next 2/5] r8152: replace array with linking list for rx information Message-ID: <20190806144003.457b244e@cakuba.netronome.com> In-Reply-To: <20190806125342.4620a94f@cakuba.netronome.com> References: <1394712342-15778-289-albertk@realtek.com> <1394712342-15778-291-albertk@realtek.com> <20190806125342.4620a94f@cakuba.netronome.com> Organization: Netronome Systems, Ltd. MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Tue, 6 Aug 2019 12:53:42 -0700, Jakub Kicinski wrote: > > @@ -744,6 +745,8 @@ struct r8152 { > > void (*autosuspend_en)(struct r8152 *tp, bool enable); > > } rtl_ops; > > > > + atomic_t rx_count; > > I wonder what the advantage of rx_count being atomic is, perhpas it > could be protected by the same lock as the list head? Okay, I see you're using it to test the queue length without the lock in a later patch.