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 60D31C4345F for ; Tue, 30 Apr 2024 09:44:38 +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=MWcDvHQz1qAmSQiWoPcTSiSoOEgkIV5oKWq8MpT6OrM=; b=ivHrg1YMaJr2JL f+UVP7NQdUClVW86kH86t3f6Fou246cwH7ykJrrdDw0A9v8JuXMwmoshvYkTICjh0fwOD4bq6AQ7M LU+Mqat/G0zNGJPbotMgp/giAX3HaB+CJjLrkKvBKloN3TTvRVGmn978ggt3fIdwe9QTjXvQ72+0b TckN08gUldX8ZvgNEZQRW9zAv/yJop34yGOKx1tS7xpLuiSlztHNPH8zdLvxijeHT0rGwx4GwYh8N +X72aXY0Up9zmBbUM5+cmwH1Xt9631/VJvXGFwq0aXVUqKkPKndg5HDrrl92N/Bw35CS+0XIWUi4w hU34SDBXV1/A7ElO8GBg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1k2E-00000005sun-0Iuo; Tue, 30 Apr 2024 09:44:26 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1k25-00000005ssf-3hGT for linux-arm-kernel@lists.infradead.org; Tue, 30 Apr 2024 09:44:23 +0000 Date: Tue, 30 Apr 2024 11:44:11 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1714470253; 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=bOowKsb3vb6yvE+cHvGM8w7R27xqlmhDeNm22h9uWUE=; b=hxQbr2tYYR6Ee1lJAT7He76rz7uXN6fITztCydq5R0y+2aXyzx8y+6Vo8XqV6nS88lNBRf O8dHd4EW32yeLXJN8c7IKdifsAlO/z0QgYuVXt10ewaEHZegcW665jqMZzWSDTOEsV6fnJ D2v2sjGmwSHsyH+eMnHr9ER3CAys89T2NuTcRDKFHdgCWlieih6ADW0382t8MACk0ufyas PELieLLS62LEZEJy8FVU96XIkb1Jr0GMDe5hw0BihhHKlh8k15qs0GHB/rJ+BUTg3SkykZ deJDPLJbOmfwjOUasL+gCCspLGCL0L92T2ePcmO29MlTjMtEryv846jW3oGUaw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1714470253; 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=bOowKsb3vb6yvE+cHvGM8w7R27xqlmhDeNm22h9uWUE=; b=5DsTfBnc0PChyayOH2+kxEBXSDG2J4T+waLj2XZspU23YotrwFbDfRM+u0cPo8IfqEAVz0 5oX+BJ6diAdjfrAw== From: Sebastian Andrzej Siewior To: Ulf Hansson Cc: "Rafael J . Wysocki" , Sudeep Holla , linux-pm@vger.kernel.org, Lorenzo Pieralisi , Nikunj Kela , Prasad Sodagudi , Maulik Shah , Daniel Lezcano , Krzysztof Kozlowski , linux-rt-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/6] pmdomain/cpuidle-psci: Support s2idle/s2ram on PREEMPT_RT Message-ID: <20240430094411.HyS2Gecw@linutronix.de> References: <20240429140531.210576-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240429140531.210576-1-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240430_024418_144031_E4C583DA X-CRM114-Status: GOOD ( 11.31 ) 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 2024-04-29 16:05:25 [+0200], Ulf Hansson wrote: > The hierarchical PM domain topology and the corresponding domain-idle-states > are currently disabled on a PREEMPT_RT based configuration. The main reason is > because spinlocks are turned into sleepable locks on PREEMPT_RT, which means > genpd and runtime PM can't be use in the atomic idle-path when > selecting/entering an idle-state. > > For s2idle/s2ram this is an unnecessary limitation that this series intends to > address. Note that, the support for cpuhotplug is left to future improvements. > More information about this are available in the commit messages. > > I have tested this on a Dragonboard 410c. Have you tested this with PREEMPT_RT enabled and if so, which kernel? > Kind regards > Ulf Hansson Sebastian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel