From patchwork Fri May 3 18:42:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Desnoyers X-Patchwork-Id: 1095012 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-101731-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="xEiFw/9K"; dkim=pass (2048-bit key; unprotected) header.d=efficios.com header.i=@efficios.com header.b="BMk1ORiz"; 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 44wgwq6g0yz9sBb for ; Sat, 4 May 2019 04:42:35 +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=XSzz3C8Qx/0rxMB0jWtFsuEYjGNCRyx1QnWN+6DlcOQCGj8EDpEhK 6zSMJZUnXUvHq2GWcVwHB83ihMHc0+ip6GfWP+WVHeXNw1EAEF2bGq7yzgQRoq6p vfxW0Lhi2hwdTk/5O6YqWVNJgkvAdtsue5LzBvWeDCHuvUANQRgM7Q= 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=p9jFgbKeo/R7F/gqMWkulUUHjgk=; b=xEiFw/9K4Ah5ecguwXKWO78yU/4y 095vQ6MTERsZdL0WFL4zfE+a7tm3TbyVAVvo43lxdSzCdFVY/faiVzVLh4jFt6Wd 6Q4A70cyoS9301eLXi6BLYnfQOt5K0sIUwNOVCwiYKd5ojLvPb+tjczj2GxxtkRI bwkgMRpwKczkNF8= Received: (qmail 67086 invoked by alias); 3 May 2019 18:42:28 -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 67078 invoked by uid 89); 3 May 2019 18:42:28 -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=HDKIM-Filter:v2.10.3, NEWS X-HELO: mail.efficios.com DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com B36661DD9A7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1556908944; bh=G+XsP2VrkboItmhSWzaJdOU9N7KmK7RVkbWmziX+94I=; h=From:To:Date:Message-Id; b=BMk1ORizOsdNOej1Sy77MLq9m6S03u9NgFLC//tQXVrvD9lxIEXneqXF3oz2ibAPm tjuPx05iEw2oKNZ41KQDgJ+yCNA9x0JpWP3fsNsHDkrl0uOqNSA+DmpdneemXlz1LE O7I4hHx0Cva0kiPgo7FYkT4Mcg2+aoQb8K18nW/t8sFV+Ah0NcJSFd7V8rtu4rMXoH d76Xrq9pix/KvF2nh7Twk2TfdzQc8RXTELb2UxJrN1rAE8E/US73LWi15geFegyE85 Rgzbtj8Q6ggHq/vU8qGKKjA1A3Vzbjws4ErdDJ6+M4vgx2sEwDMVgb5b+6bg0D50i0 NAdkqtGnykExQ== 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: Fri, 3 May 2019 14:42:14 -0400 Message-Id: <20190503184219.19266-1-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 (v10) glibc: sched_getcpu(): use rseq cpu_id TLS on Linux (v4) support record failure: allow use from constructor support: implement xpthread key create/delete (v2) rseq registration tests (v4) ChangeLog | 66 ++++ NEWS | 15 + csu/libc-start.c | 14 +- misc/rseq-internal.h | 38 ++ 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 | 24 ++ support/xthread.h | 2 + sysdeps/unix/sysv/linux/Makefile | 8 +- sysdeps/unix/sysv/linux/Versions | 4 + sysdeps/unix/sysv/linux/aarch64/bits/rseq.h | 43 ++ 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 | 29 ++ 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 | 88 +++++ sysdeps/unix/sysv/linux/rseq-sym.c | 63 +++ sysdeps/unix/sysv/linux/s390/bits/rseq.h | 30 ++ .../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 | 50 +++ 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 | 30 ++ .../unix/sysv/linux/x86_64/64/libc.abilist | 2 + .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 + 50 files changed, 1107 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