From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by sourceware.org (Postfix) with ESMTP id 0F2AA386F03C for ; Mon, 14 Dec 2020 13:11:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0F2AA386F03C Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-26-4SsIg6F0O4iDHCEcpuiQuw-1; Mon, 14 Dec 2020 08:11:24 -0500 X-MC-Unique: 4SsIg6F0O4iDHCEcpuiQuw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DC1651934101; Mon, 14 Dec 2020 13:11:22 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-112-228.ams2.redhat.com [10.36.112.228]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0847B7086A; Mon, 14 Dec 2020 13:11:21 +0000 (UTC) From: Florian Weimer To: Andreas Schwab Cc: Florian Weimer via Libc-alpha , Michael Kerrisk Subject: Re: [PATCH 03/13] nptl: Remove clockwait_tid References: <20201123195256.3336217-1-adhemerval.zanella@linaro.org> <20201123195256.3336217-3-adhemerval.zanella@linaro.org> <87v9d4d1m3.fsf@oldenburg2.str.redhat.com> <87wnxkh7vb.fsf@igel.home> Date: Mon, 14 Dec 2020 14:11:20 +0100 In-Reply-To: <87wnxkh7vb.fsf@igel.home> (Andreas Schwab's message of "Mon, 14 Dec 2020 13:47:36 +0100") Message-ID: <87lfe0cz2f.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.1 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Dec 2020 13:11:30 -0000 * Andreas Schwab: > On Dez 14 2020, Florian Weimer via Libc-alpha wrote: > >> This uses FUTEX_WAIT. But the replacement, >> __futex_abstimed_wait_common64, uses FUTEX_WAIT_BITSET. > > FUTEX_WAIT is exactly equivalent to > FUTEX_WAIT_BITSET/FUTEX_BITSET_MATCH_ANY. Hmm. I will continue debugging. I encounter a missed wakeup in pthread_join after making some changes that only should affect timing (intl/tst-gettext6 is among the failures). Reverting this patch here seems to help. Thanks, Florian -- Red Hat GmbH, https://de.redhat.com/ , Registered seat: Grasbrunn, Commercial register: Amtsgericht Muenchen, HRB 153243, Managing Directors: Charles Cachera, Brian Klemm, Laurie Krebs, Michael O'Neill