From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id B36AF1F463 for ; Tue, 10 Sep 2019 09:13:33 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:date:mime-version:content-type :message-id; q=dns; s=default; b=qQhkSEp2yQ5tYim5mHasm/0G5ayk5oD Ya7any+TT3+cvSiGD9VeR6Cj2i2XETTqV6FZhPymaly7bWgwZtp0WXzMisRqbhwr 7GP9KKhpbluxVWsdv96PbBIPZBoVMGBYk6mfANs7tsjOlQVQv0pRC8cxHL1hffXI 8cWsFQMEB/pI= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:date:mime-version:content-type :message-id; s=default; bh=NHVu9Gykx/GFkfiGFBBNNDvZpQM=; b=S6iYs eqj3TR6wvoVo9T4CKz4aPrmGCA8/mOUlFBRhhjbFigPR0M5q7XN3f4ZURdrn8R3h W9dCKKS+oKD//7ZyauI2Gw6y3r2tgUAYgl+IkfyzB39VzXSlUIZUGWChZjSu4mK/ T4XIJPHtexF/mCb3IxSVKN5F2K3XtrL1gkS+xE= Received: (qmail 112527 invoked by alias); 10 Sep 2019 09:13:31 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 112519 invoked by uid 89); 10 Sep 2019 09:13:31 -0000 Authentication-Results: sourceware.org; auth=none X-HELO: mx0a-001b2d01.pphosted.com To: GNU C Library From: Stefan Liebler Subject: [PATCH] S390: Add support for HP_TIMING_NOW. Date: Tue, 10 Sep 2019 11:13:23 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------EF82727B7BF6563CFEA79404" x-cbid: 19091009-0016-0000-0000-000002A96B79 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19091009-0017-0000-0000-00003309F160 Message-Id: <463e855f-b4bb-97ea-9f83-2fa64a9e7164@linux.ibm.com> This is a multi-part message in MIME format. --------------EF82727B7BF6563CFEA79404 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hi, this patch adds support for HP_TIMING_NOW if we build at least with -march=z10 -mzarch. Otherwise we are still using the generic hp-timing.h. Bye, Stefan ChangeLog: * sysdeps/s390/hp-timing.h: New file. --------------EF82727B7BF6563CFEA79404 Content-Type: text/x-patch; name="20190905_hptiming.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="20190905_hptiming.patch" commit 9a0d12c72043f54b7a810a5d7ee0fabdec574bb6 Author: Stefan Liebler Date: Thu Sep 5 13:37:45 2019 +0200 S390: Add support for HP_TIMING_NOW. This patch adds support for HP_TIMING_NOW if we build at least with -march=z10 -mzarch. Otherwise we are still using the generic hp-timing.h. ChangeLog: * sysdeps/s390/hp-timing.h: New file. diff --git a/sysdeps/s390/hp-timing.h b/sysdeps/s390/hp-timing.h new file mode 100644 index 0000000000..b54b8dda9b --- /dev/null +++ b/sysdeps/s390/hp-timing.h @@ -0,0 +1,42 @@ +/* High precision, low overhead timing functions. s390 version. + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#ifndef _HP_TIMING_H + +/* The stckf instruction is available starting with z9-109 zarch CPUs. + As there is no extra configure check for z9-109, the z10 one is used. */ +#ifdef HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT +# define _HP_TIMING_H 1 +# include + +/* We use 64 bit values for the times. + Note: Bit 51 is incremented every 0.000 001s = 1us. */ +typedef unsigned long long int hp_timing_t; + +# define HP_TIMING_INLINE (1) + +# define HP_TIMING_NOW(VAR) \ + do { \ + __asm__ __volatile__ ("stckf %0" : "=Q" (VAR) : : "cc"); \ + } while (0) + +#else +# include_next +#endif + +#endif /* hp-timing.h */ --------------EF82727B7BF6563CFEA79404--