From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [PATCH] soc/tegra: pmc: Fix "scheduling while atomic" To: Stephen Warren , Thierry Reding , Alexandre Courbot , Peter De Schrijver , Prashant Gaikwad References: <1460900051-3065-1-git-send-email-digetx@gmail.com> Cc: linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org From: Dmitry Osipenko Message-ID: <69a8cb7c-0821-a6d2-607b-7d9a0ac057d2@gmail.com> Date: Thu, 5 May 2016 14:45:31 +0300 MIME-Version: 1.0 In-Reply-To: <1460900051-3065-1-git-send-email-digetx@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: I forgot to mention that this is observed on 3.18 android kernel fork under a quite specific condition: EMC scaling enabled and set to the lowest freq, CPU max freq reduced. This may cause higher latency on CPU idle enter/exit. I couldn't reproduce this issue with the upstream kernel, guess some specific workload is also required. Any comments? =) -- Dmitry