From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Zhang Subject: Re: Player Thread is not woken after period elapsed Date: Wed, 14 Sep 2011 16:39:17 +0800 Message-ID: <20110914083916.GA23710@zhy> References: <3CA6C6D9F70D314CA34352990B57DA1507C420F15C@bgsmsx502.gar.corp.intel.com> <20110905112225.72b46ac9@infradead.org> <3CA6C6D9F70D314CA34352990B57DA1507C4275D58@bgsmsx502.gar.corp.intel.com> <20110906200614.57a99d3d@infradead.org> <3CA6C6D9F70D314CA34352990B57DA1507C42767FA@bgsmsx502.gar.corp.intel.com> <20110908021327.GA8890@zhy> <20110908072948.GB11124@zhy> <3CA6C6D9F70D314CA34352990B57DA1507C42C3CA5@bgsmsx502.gar.corp.intel.com> <20110909060725.GA21124@zhy> <3CA6C6D9F70D314CA34352990B57DA1507C4317651@bgsmsx502.gar.corp.intel.com> Reply-To: Yong Zhang Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <3CA6C6D9F70D314CA34352990B57DA1507C4317651@bgsmsx502.gar.corp.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Nallasellan, Singaravelan" Cc: Arjan van de Ven , "alsa-devel@alsa-project.org" , "linux-kernel@vger.kernel.org" List-Id: alsa-devel@alsa-project.org On Fri, Sep 09, 2011 at 06:12:03PM +0530, Nallasellan, Singaravelan wrote: > > > > > > Further investigation of this issue shows that the thread is in > > > > > > running state > > > > Hmm, how do you detect it? > > > > > > and it is not scheduled. I am not sure how I will go about debugging this > > issue. > > > > Any pointer would help. > > > > Could 'cat /proc/sched_debug' give some useful info? > Tried. It did not help. > > > > And BTW, have you tried CONFIG_DETECT_SOFTLOCKUP = y? > > > It is already set. That sound at least kwatchdogd could be scheduled suscessfully. And if CONFIG_DETECT_HUNG_TASK could not bite your "Player Thread", I have no idea what's going on. Maybe you could try the latest kernel? Thanks, Yong