From patchwork Mon Apr 22 17:56:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Desnoyers X-Patchwork-Id: 1088794 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-101549-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=efficios.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.b="le7dpAMH"; dkim=pass (2048-bit key; unprotected) header.d=efficios.com header.i=@efficios.com header.b="t6OZbh9P"; 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 44nvQw65Wmz9s9G for ; Tue, 23 Apr 2019 03:56:40 +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:from:to:cc:subject:date:message-id; q=dns; s= default; b=fgL9Xv64ufmSCt6Ek3X6hNII1O+qUlhchRC3WfZzPbbq8TaCaYMOz oXJkHL3EmH7ZM3Ne92F1x8mU5i78mYJReq9BC14Hzzx6aBKsaixdNoo44h1kcA+n Q2DOpJaMI1BDTfeKJAMkr4E+h+DimUuB4iKMLox/hY+JfXJ82j/6a0= 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:from:to:cc:subject:date:message-id; s=default; bh=uLbo6m9ipbNL1ggYdoGpVR1lmwY=; b=le7dpAMHR+ut/EVGi6UmNTkkvOle If9gvbDUwQPkDAesY1Dy4wC74EUMgGo0rAXB9zDJhG8LdygEcBxOkYJj0TQHSkJN M9TlLgg7XO/ZLZC3JJvj45Afhlx0J/2VGer1ulgXcJa9pmrHGwY62X/27H72D/cQ aaz5SV3Er4q7RT4= Received: (qmail 95796 invoked by alias); 22 Apr 2019 17:56:32 -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 95786 invoked by uid 89); 22 Apr 2019 17:56:32 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-14.9 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_3, KAM_NUMSUBJECT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.1 spammy=HTo:U*carlos, sk:support X-HELO: mail.efficios.com DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com 96AD21A848C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1555955787; bh=6AxIqlxYTzmrnQEiy6iGYjiW4Si1YnWnCF5deyDwqi8=; h=From:To:Date:Message-Id; b=t6OZbh9PA2IfXGJ638fCPUr1ttMoGB/ls5kzUZpMIGtEv/lZcptUecJMxay7w9hKh GkHD09uiDPTK4Lc+ugkHR/gmj6VSxNTgkRcAVikuouG7d2dNbq5Hm01T/Gy7LPGJOf yXvGWFzySosTxOzzG0MpHCsDyQk+MAEHKl7G8vKhgKqUKpGvcnj5DB+9B9dkFLZaMV xO5ZujgVYU9y1VO3xaHhM8eMQe6XmSmrNWbzVS2Bb3I+u6/2PzvtW1LolChBI7aa6y JNwTiSjZCaWMr/x4jH9xEmdaR9PMv96x3vunxyqp4EJdN9Q/6D9bQ2tjamB8xz68qJ Ue7YVfoveqBAQ== From: Mathieu Desnoyers To: Carlos O'Donell Cc: Florian Weimer , Joseph Myers , Szabolcs Nagy , libc-alpha@sourceware.org, Mathieu Desnoyers Subject: [PATCH 0/5] Restartable Sequences support for glibc 2.30 Date: Mon, 22 Apr 2019 13:56:18 -0400 Message-Id: <20190422175623.6134-1-mathieu.desnoyers@efficios.com> Hi, This patchset implements basic support for the "rseq" Linux system call in glibc by registering the rseq TLS abi. One patch in this series modifies sched_getcpu() to speed up reading the current CPU number by reading __rseq_abi.cpu_id when rseq is available. This round takes care of the few comments received in the previous one. Please consider for inclusion into glibc, Thanks, Mathieu Mathieu Desnoyers (5): glibc: Perform rseq(2) registration at C startup and thread creation (v9) glibc: sched_getcpu(): use rseq cpu_id TLS on Linux (v3) support record failure: allow use from constructor support: implement xpthread key create/delete rseq registration tests (v3) NEWS | 15 + csu/libc-start.c | 14 +- misc/rseq-internal.h | 39 ++ nptl/pthread_create.c | 9 + support/Makefile | 2 + support/check.h | 4 + support/support_record_failure.c | 18 +- support/xpthread_key_create.c | 25 ++ support/xpthread_key_delete.c | 25 ++ support/xthread.h | 2 + sysdeps/unix/sysv/linux/Makefile | 8 +- sysdeps/unix/sysv/linux/Versions | 4 + sysdeps/unix/sysv/linux/aarch64/bits/rseq.h | 44 +++ sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 + sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 + sysdeps/unix/sysv/linux/arm/libc.abilist | 2 + sysdeps/unix/sysv/linux/bits/rseq.h | 30 ++ sysdeps/unix/sysv/linux/csky/libc.abilist | 2 + sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 + sysdeps/unix/sysv/linux/i386/libc.abilist | 2 + sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 + .../sysv/linux/m68k/coldfire/libc.abilist | 2 + .../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 + .../unix/sysv/linux/microblaze/libc.abilist | 2 + .../sysv/linux/mips/mips32/fpu/libc.abilist | 2 + .../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 + .../sysv/linux/mips/mips64/n32/libc.abilist | 2 + .../sysv/linux/mips/mips64/n64/libc.abilist | 2 + sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 + .../linux/powerpc/powerpc32/fpu/libc.abilist | 2 + .../powerpc/powerpc32/nofpu/libc.abilist | 2 + .../linux/powerpc/powerpc64/be/libc.abilist | 2 + .../linux/powerpc/powerpc64/le/libc.abilist | 2 + .../unix/sysv/linux/riscv/rv64/libc.abilist | 2 + sysdeps/unix/sysv/linux/rseq-internal.h | 89 +++++ sysdeps/unix/sysv/linux/rseq-sym.c | 64 +++ sysdeps/unix/sysv/linux/s390/bits/rseq.h | 31 ++ .../unix/sysv/linux/s390/s390-32/libc.abilist | 2 + .../unix/sysv/linux/s390/s390-64/libc.abilist | 2 + sysdeps/unix/sysv/linux/sched_getcpu.c | 24 +- sysdeps/unix/sysv/linux/sh/libc.abilist | 2 + .../sysv/linux/sparc/sparc32/libc.abilist | 2 + .../sysv/linux/sparc/sparc64/libc.abilist | 2 + sysdeps/unix/sysv/linux/sys/rseq.h | 51 +++ sysdeps/unix/sysv/linux/tst-rseq-nptl.c | 367 ++++++++++++++++++ sysdeps/unix/sysv/linux/tst-rseq.c | 114 ++++++ sysdeps/unix/sysv/linux/x86/bits/rseq.h | 31 ++ .../unix/sysv/linux/x86_64/64/libc.abilist | 2 + .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 + 49 files changed, 1050 insertions(+), 14 deletions(-) create mode 100644 misc/rseq-internal.h create mode 100644 support/xpthread_key_create.c create mode 100644 support/xpthread_key_delete.c create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/rseq-internal.h create mode 100644 sysdeps/unix/sysv/linux/rseq-sym.c create mode 100644 sysdeps/unix/sysv/linux/s390/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/sys/rseq.h create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-nptl.c create mode 100644 sysdeps/unix/sysv/linux/tst-rseq.c create mode 100644 sysdeps/unix/sysv/linux/x86/bits/rseq.h