Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp3756278ybt; Tue, 23 Jun 2020 09:58:17 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwJHnMRuqvr9GZVAoiaLuONz9yOzsYR0CiCu6Meh7OePfgFznb4mmq4JSS2tpe8MAMGOPX5 X-Received: by 2002:aa7:d987:: with SMTP id u7mr17176591eds.116.1592931497263; Tue, 23 Jun 2020 09:58:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1592931497; cv=none; d=google.com; s=arc-20160816; b=hQbgAvp/h6sNc7dHEp1uiNzolLyvsdxeuGNGxX6RLbVh+xP8f+ZRW2LZYywC9zxcaR gb0Xca2YlPuz7P8R28xYpgmjMSSvqwa5FfaBqL+lpot62w/e0hPiToEVsaVS71x39DgG /OIci0dJoWTL3usIMzN9drbPmP7ZMfvAeYk58qiv9Cz3/wk3d393MqjOaiIxjWl17urx tIyZam3+LZCrUvYFZHrgD8sQ/oIWN5+2Y9uZ+Out1fQuVEWOtBX9vAtHv0A6n9R02Yka yy88WagOF7pxa1/eynip2wdf74rDR9vnkozHvXN0hp2okfov6de3k+srk+OGsTUmGDbB IAyw== 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:dkim-signature; bh=7IUJDv673wwV1KGLXXERYSJXtmn6Ze9ZBGunjD9xY7k=; b=G8p+JNGbBnKc4YGlqsvgmeR82lxr3PQSoxddGuGBSZxHL/6rDD2VOAuAym6ddzWAf8 wFOjvqOOLfi2TDejHUkME/TaZbjWH7zNrPR3+czyxmqdLC61ESV2Q8zXqRz6xHMf/3Cy dfyYT9u1ARfl+T48E2Xqix6aPHezGYOP36FTQ+DVL1d42LPHzc/NiKs6Sh5tbnDxpSIg 6kEfVIJ7KDdqLb4bMSwXdLHAvnbCSmf8jOQMS0FM3kOwCInBYCN+DG8xbnGoUMWkIJT2 0qF95g6UoyleDaJgXeHGiECPfg33uB+x5jSM43LGuSSNgeAr7WLP/j7UHMJPRgf91cKt 1mHg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=EcaSWYzI; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b12si6675514edq.471.2020.06.23.09.57.54; Tue, 23 Jun 2020 09:58:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=EcaSWYzI; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733144AbgFWQ5d (ORCPT + 99 others); Tue, 23 Jun 2020 12:57:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:35134 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733100AbgFWQ53 (ORCPT ); Tue, 23 Jun 2020 12:57:29 -0400 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6252E2076E; Tue, 23 Jun 2020 16:57:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592931449; bh=VFpMHGMOkfxQ8AB6qe3YYkBZw3f0fAv4eRBSgiMhi+Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=EcaSWYzIOvwNnttS8B9JpebXlTD9Ew6G68XXs7JIVqQRq2/0lingC0RbdOsnwTSHh NmaMeM+bOQhxqaXCo7xjaoRPwFB5vKXGaFtkBiIUMTA3+JNGTFOwOHJb22GL8mCfcp kHho4p9bQhCIGTk/N4YDlmwrICxaG0WEzbSEYuWM= Date: Tue, 23 Jun 2020 17:57:24 +0100 From: Will Deacon To: Mark Salyzyn Cc: LKML , Android Kernel Team , Chiawei Wang , Catalin Marinas , Thomas Gleixner , Vincenzo Frascino , Enrico Weigelt , Greg Kroah-Hartman , Alexios Zavras , linux-arm-kernel , Allison Randal Subject: Re: [PATCH v2]: arch: arm64: vdso: export the symbols for time() Message-ID: <20200623165723.GB4819@willie-the-truck> References: <20200615143838.143137-1-salyzyn@android.com> <20200623144459.GB4336@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 23, 2020 at 09:47:57AM -0700, Mark Salyzyn wrote: > time() in bionic libc will go an use vDSO interface to pick up this > low-resolution timer. But my point is it should _already_ be using the vDSO implementation of clock_gettime(), which should be plenty fast enough. Will