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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 D30E6C433DF for ; Fri, 29 May 2020 18:57:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A765120897 for ; Fri, 29 May 2020 18:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727851AbgE2S5K (ORCPT ); Fri, 29 May 2020 14:57:10 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:40691 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725865AbgE2S5J (ORCPT ); Fri, 29 May 2020 14:57:09 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 49YYhg2V5Bz9v2Td; Fri, 29 May 2020 20:57:07 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id uT3_SGAy8cdX; Fri, 29 May 2020 20:57:07 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 49YYhg1NrPz9v2Tc; Fri, 29 May 2020 20:57:07 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 3E7238B886; Fri, 29 May 2020 20:57:07 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id g5wPUXHwNnhl; Fri, 29 May 2020 20:57:07 +0200 (CEST) Received: from [192.168.4.90] (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 864B18B7A8; Fri, 29 May 2020 20:57:06 +0200 (CEST) Subject: Re: [PATCH v8 0/8] powerpc: switch VDSO to C implementation To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , nathanl@linux.ibm.com Cc: linux-arch@vger.kernel.org, arnd@arndb.de, linux-kernel@vger.kernel.org, luto@kernel.org, tglx@linutronix.de, vincenzo.frascino@arm.com, linuxppc-dev@lists.ozlabs.org References: From: Christophe Leroy Message-ID: <438ce3d7-aa0f-0284-7518-6c6339742aab@csgroup.eu> Date: Fri, 29 May 2020 20:56:57 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Michael, Le 28/04/2020 à 15:16, Christophe Leroy a écrit : > This is the seventh version of a series to switch powerpc VDSO to > generic C implementation. > > Main changes since v7 are: > - Added gettime64 on PPC32 > > This series applies on today's powerpc/merge branch. > > See the last patches for details on changes and performance. Do you have any plans for this series ? Even if you don't feel like merging it this cycle, I think patches 1 to 3 are worth it. Christophe > > Christophe Leroy (8): > powerpc/vdso64: Switch from __get_datapage() to get_datapage inline > macro > powerpc/vdso: Remove __kernel_datapage_offset and simplify > __get_datapage() > powerpc/vdso: Remove unused \tmp param in __get_datapage() > powerpc/processor: Move cpu_relax() into asm/vdso/processor.h > powerpc/vdso: Prepare for switching VDSO to generic C implementation. > powerpc/vdso: Switch VDSO to generic C implementation. > lib/vdso: force inlining of __cvdso_clock_gettime_common() > powerpc/vdso: Provide __kernel_clock_gettime64() on vdso32 > > arch/powerpc/Kconfig | 2 + > arch/powerpc/include/asm/clocksource.h | 7 + > arch/powerpc/include/asm/processor.h | 10 +- > arch/powerpc/include/asm/vdso/clocksource.h | 7 + > arch/powerpc/include/asm/vdso/gettimeofday.h | 175 +++++++++++ > arch/powerpc/include/asm/vdso/processor.h | 23 ++ > arch/powerpc/include/asm/vdso/vsyscall.h | 25 ++ > arch/powerpc/include/asm/vdso_datapage.h | 50 ++-- > arch/powerpc/kernel/asm-offsets.c | 49 +-- > arch/powerpc/kernel/time.c | 91 +----- > arch/powerpc/kernel/vdso.c | 58 +--- > arch/powerpc/kernel/vdso32/Makefile | 32 +- > arch/powerpc/kernel/vdso32/cacheflush.S | 2 +- > arch/powerpc/kernel/vdso32/config-fake32.h | 34 +++ > arch/powerpc/kernel/vdso32/datapage.S | 7 +- > arch/powerpc/kernel/vdso32/gettimeofday.S | 300 +------------------ > arch/powerpc/kernel/vdso32/vdso32.lds.S | 8 +- > arch/powerpc/kernel/vdso32/vgettimeofday.c | 35 +++ > arch/powerpc/kernel/vdso64/Makefile | 23 +- > arch/powerpc/kernel/vdso64/cacheflush.S | 9 +- > arch/powerpc/kernel/vdso64/datapage.S | 31 +- > arch/powerpc/kernel/vdso64/gettimeofday.S | 243 +-------------- > arch/powerpc/kernel/vdso64/vdso64.lds.S | 7 +- > arch/powerpc/kernel/vdso64/vgettimeofday.c | 29 ++ > lib/vdso/gettimeofday.c | 2 +- > 25 files changed, 460 insertions(+), 799 deletions(-) > create mode 100644 arch/powerpc/include/asm/clocksource.h > create mode 100644 arch/powerpc/include/asm/vdso/clocksource.h > create mode 100644 arch/powerpc/include/asm/vdso/gettimeofday.h > create mode 100644 arch/powerpc/include/asm/vdso/processor.h > create mode 100644 arch/powerpc/include/asm/vdso/vsyscall.h > create mode 100644 arch/powerpc/kernel/vdso32/config-fake32.h > create mode 100644 arch/powerpc/kernel/vdso32/vgettimeofday.c > create mode 100644 arch/powerpc/kernel/vdso64/vgettimeofday.c >