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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 18C6EC43441 for ; Wed, 10 Oct 2018 20:00:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CEF2C2086D for ; Wed, 10 Oct 2018 20:00:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEF2C2086D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728037AbeJKDYV (ORCPT ); Wed, 10 Oct 2018 23:24:21 -0400 Received: from mga14.intel.com ([192.55.52.115]:52848 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727879AbeJKDYB (ORCPT ); Wed, 10 Oct 2018 23:24:01 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Oct 2018 13:00:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,365,1534834800"; d="scan'208";a="240262417" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.112.69]) by orsmga004.jf.intel.com with ESMTP; 10 Oct 2018 12:59:34 -0700 From: Keith Busch To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Kirill Shutemov , Dave Hansen , Dan Williams , Andrew Morton , Keith Busch Subject: [PATCH 5/6] tools/gup_benchmark: Add MAP_SHARED option Date: Wed, 10 Oct 2018 13:56:04 -0600 Message-Id: <20181010195605.10689-5-keith.busch@intel.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20181010195605.10689-1-keith.busch@intel.com> References: <20181010195605.10689-1-keith.busch@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds a new benchmark option, -S, to request MAP_SHARED. This can be used to compare with MAP_PRIVATE, or for files that require this option, like dax. Signed-off-by: Keith Busch --- tools/testing/selftests/vm/gup_benchmark.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c index b675a3d60975..24528b54549d 100644 --- a/tools/testing/selftests/vm/gup_benchmark.c +++ b/tools/testing/selftests/vm/gup_benchmark.c @@ -32,11 +32,11 @@ int main(int argc, char **argv) struct gup_benchmark gup; unsigned long size = 128 * MB; int i, fd, filed, opt, nr_pages = 1, thp = -1, repeats = 1, write = 0; - int cmd = GUP_FAST_BENCHMARK; + int cmd = GUP_FAST_BENCHMARK, flags = MAP_PRIVATE; char *file = "/dev/zero"; char *p; - while ((opt = getopt(argc, argv, "m:r:n:f:tTLU")) != -1) { + while ((opt = getopt(argc, argv, "m:r:n:f:tTLUS")) != -1) { switch (opt) { case 'm': size = atoi(optarg) * MB; @@ -65,6 +65,10 @@ int main(int argc, char **argv) case 'f': file = optarg; break; + case 'S': + flags &= ~MAP_PRIVATE; + flags |= MAP_SHARED; + break; default: return -1; } @@ -81,7 +85,7 @@ int main(int argc, char **argv) if (fd == -1) perror("open"), exit(1); - p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, filed, 0); + p = mmap(NULL, size, PROT_READ | PROT_WRITE, flags, filed, 0); if (p == MAP_FAILED) perror("mmap"), exit(1); gup.addr = (unsigned long)p; -- 2.14.4