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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 3AE7EC38A30 for ; Mon, 20 Apr 2020 16:56:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1440721927 for ; Mon, 20 Apr 2020 16:56:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="YQPKLkFX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726325AbgDTQ4a (ORCPT ); Mon, 20 Apr 2020 12:56:30 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:54609 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbgDTQ43 (ORCPT ); Mon, 20 Apr 2020 12:56:29 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 495XsL4DYJz9txct; Mon, 20 Apr 2020 18:56:22 +0200 (CEST) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=YQPKLkFX; dkim-adsp=pass; dkim-atps=neutral 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 Ia95URVpRcFs; Mon, 20 Apr 2020 18:56:22 +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 495XsL3527z9txc3; Mon, 20 Apr 2020 18:56:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1587401782; bh=8naV2yT/3Jan/cCUl+F/6oqhH9CCJ3NWFXowyqtwq6w=; h=From:Subject:To:Cc:Date:From; b=YQPKLkFXDfTrLeqB/NJuI38QF3DCOQPs/c2fYFvpNucqXa0OrJ26C3kvhjKlJaDwx Z2dsNp1mhKVWCzRYLB3UK3VDoE2GgNKzWAgQt8v9Z6rSjaItTHrxaYDjBGupRRH0ia 8pj1YCKvBzyAV5hYb1s48pQ0vQcj36X3Yz5PkzrM= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 3A6838B78E; Mon, 20 Apr 2020 18:56:28 +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 PbCr7gej4BIK; Mon, 20 Apr 2020 18:56:28 +0200 (CEST) Received: from pc16570vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id E4B0E8B78D; Mon, 20 Apr 2020 18:56:27 +0200 (CEST) Received: by pc16570vm.idsi0.si.c-s.fr (Postfix, from userid 0) id A9AE7657AE; Mon, 20 Apr 2020 16:56:27 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v7 0/7] powerpc: switch VDSO to C implementation To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , nathanl@linux.ibm.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com, luto@kernel.org Date: Mon, 20 Apr 2020 16:56:27 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is the seventh version of a series to switch powerpc VDSO to generic C implementation. Main changes since v6 are: - Added -fasynchronous-unwind-tables in CFLAGS - Split patch 2 in two parts - Split patch 5 (which was patch 4) in two parts This series applies on today's powerpc/merge branch. See the last two patches for details on changes and performance. Christophe Leroy (7): 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. [NOT TO BE MERGED] Export sysrq_mask 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 | 291 +------------------ arch/powerpc/kernel/vdso32/vdso32.lds.S | 7 +- arch/powerpc/kernel/vdso32/vgettimeofday.c | 29 ++ 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 ++ drivers/tty/sysrq.c | 1 + 25 files changed, 444 insertions(+), 798 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 -- 2.25.0