From patchwork Tue Sep 10 09:13:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Liebler X-Patchwork-Id: 1160139 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=sourceware.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=libc-alpha-return-105115-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.b="CkFBWfAs"; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 46SK8J6qTqz9s00 for ; Tue, 10 Sep 2019 19:13:36 +1000 (AEST) 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=dKHU9P449w250ddJEpMlxMF92YA0Unx ESauoGn4mR9gpKWdYnfM4/1cFLvrpDFx/SICDHni0FGR+x1zD4Nh0PhN9+ghv17z wuPKzIag1bx2z7s8lIi3Hkop8dnK194zaGf8vPEYeqKwE0EL3b11Jxwt27Qn2uFy TDPQLp/r4EXo= 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=CkFBW fAsUjYqAjyLW4LaMNRU/PftDNnOcfXinYVimkpDv/H6Nx+NbgXEF3HE1Ml80pGPK PQoD3nBEQeI2xXHsV3uRZ1BddmoTzwr/j2yy94zeFBMSmwyhwbP2kP8hD1Y53L/H 8P4tCgsiVZ55HQgfmIazOtmtvtwwl8fbinRnA8= 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 Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 112519 invoked by uid 89); 10 Sep 2019 09:13:31 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-22.7 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.1 spammy=stli@linux.ibm.com, liebler, Liebler, stlilinuxibmcom 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 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> 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. 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 */