From nobody Mon Jul 19 09:33:38 2021 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 6AEA112A1A33 for ; Mon, 19 Jul 2021 09:33:46 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4GSxVf11m4z3kfC; Mon, 19 Jul 2021 09:33:45 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.16.1/8.16.1) with ESMTPS id 16J9Xc0V032047 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Mon, 19 Jul 2021 12:33:41 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua 16J9Xc0V032047 Received: (from kostik@localhost) by tom.home (8.16.1/8.16.1/Submit) id 16J9XcLm032046; Mon, 19 Jul 2021 12:33:38 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Mon, 19 Jul 2021 12:33:38 +0300 From: Konstantin Belousov To: Dmitry Chagin Cc: freebsd-hackers@freebsd.org Subject: Re: pondering pi futexes Message-ID: References: List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.5 X-Spam-Checker-Version: SpamAssassin 3.4.5 (2021-03-20) on tom.home X-Rspamd-Queue-Id: 4GSxVf11m4z3kfC X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N On Mon, Jul 19, 2021 at 11:01:17AM +0300, Dmitry Chagin wrote: > Hi, thanks for the reply, I mostly finished, > the new futex impl is fully based on the umtx code, one question before review. > some umtx API, which is needed for futexes, inlined, like > umtxq_busy/unbusy, umtxq_lock/unlock, umtx_pi_alloc/pi_free, etc.. > For now I moved such API to the umtx header, but as far as I understand > compilers are smart enough now to optimize code without suggestions. > Maybe it's time to drop inline hint? > May be. It is impossible to provide a justified answer without looking at the generated code, with/without inline. But usually yes, inline does not make a difference for not too large static functions.