From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B6B8369 for ; Mon, 23 May 2022 07:19:52 +0000 (UTC) Date: Mon, 23 May 2022 09:09:07 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1653289748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9fXGl02y6RMoaaLIdcX/WdBIdoqHbzfOjOVe1GnCbiE=; b=QPcVXQdx4xVhSQNlutu55LBMOkk8goN5Yd+g6Qk9Yhcf7EkeMlTCJzW1nF/JDLQiN2i/mo VjWizzvX3DYgUkZyZ+2uyfx/nvVxb5S4NoY8S641n+BVB4TAH9lhIaFLZ7lVVgaob3pKNm 4pWcVIx8ARh4iCLufnUlYDEXCgoklMoENYGUdkkTQvBClT2iRWIYy+g82n5+gG7nSQpbzk uc2cziWUWFtIhRB6GAyOc7h0U/gsMResXK2mHeQZ1oOlV8jidjXd6V5gsMqOhIX8h8LX+t O6RM8h90/TUwzgfYhoKmiKym5D3RrsugGQi9aEXdVlBCn9Ymi1uwkeHzGWx78g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1653289748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9fXGl02y6RMoaaLIdcX/WdBIdoqHbzfOjOVe1GnCbiE=; b=pUirtnHH1iEt/KEVCWaqVL0y0hyZIc/JCv0kjCf/2hMeSSRWirZ4kt/fVVPpXhIL51SZmV Y8rSMa3rqAiRXqCA== From: Sebastian Andrzej Siewior To: Stefan Wahren Cc: Marcelo Tosatti , Andrew Morton , Nicolas Saenz Julienne , Borislav Petkov , Minchan Kim , Matthew Wilcox , Mel Gorman , Juri Lelli , Thomas Gleixner , "Paul E. McKenney" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Linux ARM , Phil Elwell , regressions@lists.linux.dev Subject: Re: vchiq: Performance regression since 5.18-rc1 Message-ID: References: <77d6d498-7dd9-03eb-60f2-d7e682bb1b20@i2se.com> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <77d6d498-7dd9-03eb-60f2-d7e682bb1b20@i2se.com> On 2022-05-22 01:22:00 [+0200], Stefan Wahren wrote: > Hi, Hi, > while testing the staging/vc04_services/interface/vchiq_arm driver with my > Raspberry Pi 3 B+ (multi_v7_defconfig) i noticed a huge performance > regression since [ff042f4a9b050895a42cae893cc01fa2ca81b95c] mm: > lru_cache_disable: replace work queue synchronization with synchronize_rcu > > Usually i run "vchiq_test -f 1" to see the driver is still working [1]. What about https://lore.kernel.org/all/YmrWK%2FKoU1zrAxPI@fuller.cnet/ Sebastian 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8E29DC433EF for ; Mon, 23 May 2022 07:54:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=jQlU1hnRaBiZbZEIb3hdDAS1Keu8GX+kJ41pclV4cV8=; b=SovtU+ycL9cjSO uXl/drrh8vrQ/QzkjSFuMNLIDG42fCAG3vtmYL4nBP2nKRVkno7zgzF69mse4jwRIsGrP2ehKhn1U 8aCTmyJ4oCzM7S/1RQe19SP4oE0hucIzRXEJjdZZfXPDxKzf5ZedxfNFkO3vK8u3nuMZJ3wtGtCbE Il/qN9xeZQeEo7FesEb2XfRfIWHQyHSXR5F2+W5vGZeofwCfHXdWD61JDIa6qv4yXF3ScTS0HPooI 3Wo9bh73kyF6W5AfNp9/tAmfc6K50CQjz797ClzrgBflDMQB9Lgimhmdg388WYKaohD2nRt4fj9kK yY3aVjEITem7njt6B2zw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt2rj-002C9x-9T; Mon, 23 May 2022 07:52:35 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt2n9-002A7b-S8 for linux-arm-kernel@bombadil.infradead.org; Mon, 23 May 2022 07:47:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=9fXGl02y6RMoaaLIdcX/WdBIdoqHbzfOjOVe1GnCbiE=; b=Qho/V81Jv3EW0IxDm7nGB7RNjb uRGiXYbsKSaG8HAaDZbuQivvXdwCRxSv4cLyH/e9VJWuGk2YyRMzyIM31XGUwJuZUO6q3puVZiaAy gUDriNhd7dZg0wrqve9rpDjjSW5M5Au7dmVo2/PhR0hKKiojWE4QjEb/Z9XZl6f+gyvZ57vFQdc89 BF5kgZFaqttoN465g0MXd3KCa/40i7+Zlg7cHYJla9/K3AoHiDfNrTcTWHIIrg8CNkRC8s5XnXUDC FVj39s8qaqwOebJ0eCMIfb6siRVrLiTKrGmRv3cJQu9Obeu89ttmj4omCPZVivlro9dD7pj5Q4epm nJ5KfJjA==; Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by desiato.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt2Cw-000vXh-Qs for linux-arm-kernel@lists.infradead.org; Mon, 23 May 2022 07:10:30 +0000 Date: Mon, 23 May 2022 09:09:07 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1653289748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9fXGl02y6RMoaaLIdcX/WdBIdoqHbzfOjOVe1GnCbiE=; b=QPcVXQdx4xVhSQNlutu55LBMOkk8goN5Yd+g6Qk9Yhcf7EkeMlTCJzW1nF/JDLQiN2i/mo VjWizzvX3DYgUkZyZ+2uyfx/nvVxb5S4NoY8S641n+BVB4TAH9lhIaFLZ7lVVgaob3pKNm 4pWcVIx8ARh4iCLufnUlYDEXCgoklMoENYGUdkkTQvBClT2iRWIYy+g82n5+gG7nSQpbzk uc2cziWUWFtIhRB6GAyOc7h0U/gsMResXK2mHeQZ1oOlV8jidjXd6V5gsMqOhIX8h8LX+t O6RM8h90/TUwzgfYhoKmiKym5D3RrsugGQi9aEXdVlBCn9Ymi1uwkeHzGWx78g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1653289748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9fXGl02y6RMoaaLIdcX/WdBIdoqHbzfOjOVe1GnCbiE=; b=pUirtnHH1iEt/KEVCWaqVL0y0hyZIc/JCv0kjCf/2hMeSSRWirZ4kt/fVVPpXhIL51SZmV Y8rSMa3rqAiRXqCA== From: Sebastian Andrzej Siewior To: Stefan Wahren Cc: Marcelo Tosatti , Andrew Morton , Nicolas Saenz Julienne , Borislav Petkov , Minchan Kim , Matthew Wilcox , Mel Gorman , Juri Lelli , Thomas Gleixner , "Paul E. McKenney" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Linux ARM , Phil Elwell , regressions@lists.linux.dev Subject: Re: vchiq: Performance regression since 5.18-rc1 Message-ID: References: <77d6d498-7dd9-03eb-60f2-d7e682bb1b20@i2se.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <77d6d498-7dd9-03eb-60f2-d7e682bb1b20@i2se.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220523_081027_652739_D523CEF7 X-CRM114-Status: UNSURE ( 7.20 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2022-05-22 01:22:00 [+0200], Stefan Wahren wrote: > Hi, Hi, > while testing the staging/vc04_services/interface/vchiq_arm driver with my > Raspberry Pi 3 B+ (multi_v7_defconfig) i noticed a huge performance > regression since [ff042f4a9b050895a42cae893cc01fa2ca81b95c] mm: > lru_cache_disable: replace work queue synchronization with synchronize_rcu > > Usually i run "vchiq_test -f 1" to see the driver is still working [1]. What about https://lore.kernel.org/all/YmrWK%2FKoU1zrAxPI@fuller.cnet/ Sebastian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel