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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC559C32771 for ; Fri, 19 Aug 2022 14:44:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349417AbiHSOob (ORCPT ); Fri, 19 Aug 2022 10:44:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348671AbiHSOo2 (ORCPT ); Fri, 19 Aug 2022 10:44:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0577A7968B for ; Fri, 19 Aug 2022 07:44:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id ABD89B827DF for ; Fri, 19 Aug 2022 14:44:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3EC93C433D6; Fri, 19 Aug 2022 14:44:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660920264; bh=SR5PrwSUNeFzrA5RDIw69x1o+dFz9ygEbvlaWHCGNQ0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=RNMDzlofT9Do1qtO0Evz7KNkRv+ZdvLW3fBZlD7deBiDkiEkJdnhibCTwuWfPH2Jv Wi1ES+bT+zVEnj5vqLu6zJerZapPimoZLYndb+1B0NTLbB1s/Use0mLOFoEwmTr4wz dl9BR1lEQoD+20FJAuHs+VmrOZZCdmO/a/TA2nJ+b5mQa3wj1c2rMfTj9uoOJFJcmq 9K2iymNLshFFva/qqFQujb9ABgvR8S149BDlLifatYo9vaHdemFr2wPui7M3CMqQJ2 i0eufKGMyk1WJVYWno6ghQ/JE8Kfj3DKcpDuLi1MgIEny0OaPF73j254/qBTuKHf4O kMeMGq3AFZj+g== Date: Fri, 19 Aug 2022 15:44:19 +0100 From: Mark Brown To: Dmitry Rokosov Cc: Marc Zyngier , "gregkh@linuxfoundation.org" , "rafael@kernel.org" , "jic23@kernel.org" , "linux@rasmusvillemoes.dk>" , "tglx@linutronix.de" , "andy.shevchenko@gmail.com" , kernel , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v1] regmap: introduce value tracing for regmap bulk operations Message-ID: References: <20220816181451.5628-1-ddrokosov@sberdevices.ru> <20220818121515.6azkxyqetnunwsc6@CAB-WSD-L081021.sigma.sbrf.ru> <87mtc1wtjz.wl-maz@kernel.org> <20220818174441.arh7otvrkzg5uk3s@CAB-WSD-L081021.sigma.sbrf.ru> <20220819133200.xvpjzatkub4yxnsh@CAB-WSD-L081021.sigma.sbrf.ru> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="VGKnxctTzrqGZVQ/" Content-Disposition: inline In-Reply-To: <20220819133200.xvpjzatkub4yxnsh@CAB-WSD-L081021.sigma.sbrf.ru> X-Cookie: Price does not include taxes. Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --VGKnxctTzrqGZVQ/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Aug 19, 2022 at 01:31:35PM +0000, Dmitry Rokosov wrote: > On Fri, Aug 19, 2022 at 01:07:47PM +0100, Mark Brown wrote: > > I didn't realise that was even a question, but then there seems to be > > some discussion I've not seen given the CCing going on. The biggest > > issue is do we even want the overhead but I'll need to find time to look > > at this properly. > No any additional discussion before. I've added your address to all emails > which I sent. I assume you copied in Thomas, Rasmus and Marc for some reason? > Why do you think it this patch will bring overhead to regmap? AFAK, when > tracepoint is disabled, tracepoint fast assign operation shouldn't be > executed. In other words, memcpy will not be applied. To repeat I have not yet looked at your patch properly, one concern is how we handle the marshalling which regmap does. --VGKnxctTzrqGZVQ/ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmL/ocIACgkQJNaLcl1U h9ASKQf/cUZ2kReo5KKxCBpmKiXgMUqaHSmcdqLJjMdL7VGq0GmjAfYsEYnYFKK6 DDAAPQ0ZFap5BNMXGQYVg8EwkTC7yj1nKXalzfGVcxiAf7RZCBOgfFDvbjNl/osb vYcEKFugG9fTd1v9Pjk6MHBG4FK1zOkQSswXdpQKRivdWtmoujm1CKNGoXgfzQb7 fAMAPZcjNOS4HaPA9Iq0LnoF2TtAL/lUpfcL79yyqaW7qCgBB5ZLJJ7EgF/i0mvm YLI1FEcKMQRytDZDPv5y+Oyeqn9z1RqZKsKYC3k8w1lCAQBIQeT5mpI5B23YSu8z SJCQ/aIAmbnla8Ie+oN9Pt5H9d9iVA== =Sc9H -----END PGP SIGNATURE----- --VGKnxctTzrqGZVQ/--