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=-5.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 3CD12C43215 for ; Mon, 2 Dec 2019 07:57:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E4B6215F1 for ; Mon, 2 Dec 2019 07:57:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="Wgcjl/mH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726452AbfLBH53 (ORCPT ); Mon, 2 Dec 2019 02:57:29 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:30266 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726030AbfLBH52 (ORCPT ); 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Mon, 2 Dec 2019 08:57:26 +0100 (CET) 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 S44Rn1Yq615f; Mon, 2 Dec 2019 08:57:26 +0100 (CET) Received: from po16098vm.idsi0.si.c-s.fr (po15451.idsi0.si.c-s.fr [172.25.230.103]) by messagerie.si.c-s.fr (Postfix) with ESMTP id C7EEA8B79A; Mon, 2 Dec 2019 08:57:26 +0100 (CET) Received: by po16098vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 9857363600; Mon, 2 Dec 2019 07:57:26 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v4 0/8] powerpc/vdso32 enhancement and optimisation To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, arnd@arndb.de Date: Mon, 2 Dec 2019 07:57:26 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series: - adds getcpu() on non SMP ppc32 - adds coarse clocks in clock_gettime - fixes and adds all clocks in clock_getres - optimises the retrieval of the datapage address - optimises the cache functions v4: - Rebased on top of ceb307474506 ("Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground") - Fixed build failure with old binutils reported by mpe (patch 4) v3: - Dropped the 'fast syscall' hack for getcpu() on SMP. - Moved get_datapage macro into asm/vdso_datapage.h so that it can be used on PPC64 as well. v2: - Used named labels in patch 2 - Added patch from Vincenzo to fix clock_getres() (patch 3) - Removed unnecessary label in patch 4 as suggested by Segher - Added patches 5 to 8 Christophe Leroy (8): powerpc/32: Add VDSO version of getcpu on non SMP powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE powerpc: Fix vDSO clock_getres() powerpc/vdso32: inline __get_datapage() powerpc/vdso32: Don't read cache line size from the datapage on PPC32. powerpc/vdso32: use LOAD_REG_IMMEDIATE() powerpc/vdso32: implement clock_getres entirely powerpc/vdso32: miscellaneous optimisations arch/powerpc/include/asm/vdso_datapage.h | 16 +++- arch/powerpc/kernel/asm-offsets.c | 7 +- arch/powerpc/kernel/time.c | 1 + arch/powerpc/kernel/vdso.c | 5 -- arch/powerpc/kernel/vdso32/Makefile | 4 +- arch/powerpc/kernel/vdso32/cacheflush.S | 32 ++++++-- arch/powerpc/kernel/vdso32/datapage.S | 31 +------- arch/powerpc/kernel/vdso32/getcpu.S | 23 +++++- arch/powerpc/kernel/vdso32/gettimeofday.S | 124 +++++++++++++++++++++--------- arch/powerpc/kernel/vdso32/vdso32.lds.S | 2 +- arch/powerpc/kernel/vdso64/gettimeofday.S | 7 +- 11 files changed, 164 insertions(+), 88 deletions(-) -- 2.13.3