Message ID | 20200707070858.6622-42-alex.bennee@linaro.org |
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State | New |
Headers | show
Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=W7bBfv30; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4B1DBd23F5z9sQt for <incoming@patchwork.ozlabs.org>; Tue, 7 Jul 2020 17:11:37 +1000 (AEST) Received: from localhost ([::1]:44632 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>) id 1jshlP-0008Vw-0U for incoming@patchwork.ozlabs.org; Tue, 07 Jul 2020 03:11:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42708) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <alex.bennee@linaro.org>) id 1jshjJ-000564-G1 for qemu-devel@nongnu.org; Tue, 07 Jul 2020 03:09:25 -0400 Received: from mail-wr1-x42c.google.com ([2a00:1450:4864:20::42c]:34552) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <alex.bennee@linaro.org>) id 1jshjH-00046y-Lk for qemu-devel@nongnu.org; Tue, 07 Jul 2020 03:09:25 -0400 Received: by mail-wr1-x42c.google.com with SMTP id f7so40960368wrw.1 for <qemu-devel@nongnu.org>; Tue, 07 Jul 2020 00:09:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nRniERkDA/6Hi4fEHIqm7Z1ve7b/ehRoLpBF7hXj1y4=; b=W7bBfv30QS5YuvhsI5vWd2Nuyn86nV6VZ2jgWgWG7BA5OwbEU9amvj/s8BFCznBo8r ScOjAa9/Xbk0w/3LpKvE07OD6+eajF8WJees7f8+8aEQXa6CPY7QphQoxq7vWdBW+KGd Ah7RCunCq0OJDRJR/dSCGAdIbvh6XI2xZFgsrqlOL8eeC1nHVNZ65LyKnrrv1mGJ+TCq Ks8vj2L8cnswfUtoLCrSXlj/+875fReZd4eGuEJvtKhubXRQslN9YfAjXq23Jo4RsYWM b3KcfSvb3W6JCflA7A4pXt8lNKGPOjkT5QEnTta1LvlzHrnvhemv8cXJ1/1lNuKYU1hb mdjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nRniERkDA/6Hi4fEHIqm7Z1ve7b/ehRoLpBF7hXj1y4=; b=C0GuVVI5BPaVGH8x6b1KHtN7tH8g1r7uM7ytlVaivH/jn/Dnf8XstwoMG0teNYbTGS fwUSHCQ4cwiI8rSYhqlv4al2gxsBQb3RYEY2jZ1Mut284ZMkJHbp9wNEKVuFb/s66Zr6 3Y1CiXvtEXcJ8iEiQ/4H6DYfBEBtyJrflnKxKJIUdfsKbFUtW4C6DiWJebLsrARezsvf 214o2EV5ZRY1A8HIIoN5akG6WVUnB9S4z68IXLYpeDP8pVU8h1tvJr4ipVQS/tm/uz4v hRi+hPKjbu7jMNBOUN0btqcYgAjW9q8A9z5dnWPqYawC9lujafTXIXaMQ0RLbmpibaw+ lLkg== X-Gm-Message-State: AOAM532lmIOF7lSSwSqzYAZRw08bhzZqj3Y7qx3Ya6lMBf31rhEeGt/v SIjT7X4rFGws0/BX2ter9cYajw== X-Google-Smtp-Source: ABdhPJwbtjUO0gmSivoEkhz2v7qG7p8ympalBzzl1R0yrwC2cjlaxub4Ld2qXpuvwGdi0UZBi97spw== X-Received: by 2002:adf:fa81:: with SMTP id h1mr52813021wrr.266.1594105761843; Tue, 07 Jul 2020 00:09:21 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id j4sm22550758wrp.51.2020.07.07.00.09.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jul 2020 00:09:13 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 87C7D1FFC2; Tue, 7 Jul 2020 08:09:02 +0100 (BST) From: =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org> To: peter.maydell@linaro.org Subject: [PULL 41/41] tests/qht-bench: Adjust threshold computation Date: Tue, 7 Jul 2020 08:08:58 +0100 Message-Id: <20200707070858.6622-42-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200707070858.6622-1-alex.bennee@linaro.org> References: <20200707070858.6622-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x42c.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. 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Series |
[PULL,01/41] crypto/linux_keyring: fix 'secret_keyring' configure test
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diff --git a/tests/qht-bench.c b/tests/qht-bench.c index ad885d89d054..362f03cb0370 100644 --- a/tests/qht-bench.c +++ b/tests/qht-bench.c @@ -289,11 +289,25 @@ static void pr_params(void) static void do_threshold(double rate, uint64_t *threshold) { + /* + * For 0 <= rate <= 1, scale to fit in a uint64_t. + * + * Scale by 2**64, with a special case for 1.0. + * The remainder of the possible values are scattered between 0 + * and 0xfffffffffffff800 (nextafter(0x1p64, 0)). + * + * Note that we cannot simply scale by UINT64_MAX, because that + * value is not representable as an IEEE double value. + * + * If we scale by the next largest value, nextafter(0x1p64, 0), + * then the remainder of the possible values are scattered between + * 0 and 0xfffffffffffff000. Which leaves us with a gap between + * the final two inputs that is twice as large as any other. + */ if (rate == 1.0) { *threshold = UINT64_MAX; } else { - *threshold = (rate * 0xffff000000000000ull) - + (rate * 0x0000ffffffffffffull); + *threshold = rate * 0x1p64; } }