From mboxrd@z Thu Jan 1 00:00:00 1970 From: alex.shi@linaro.org (Alex Shi) Date: Fri, 16 May 2014 15:41:57 +0800 Subject: RCU stall on panda In-Reply-To: <5375091D.3010607@ti.com> References: <53675C5F.10509@linaro.org> <20140505180617.GM8754@linux.vnet.ibm.com> <20140512212102.GF5668@atomide.com> <5371BD69.8010600@linaro.org> <20140513153220.GC16837@atomide.com> <53747E6D.60500@linaro.org> <53748371.5030704@linaro.org> <5374C07C.1070400@linaro.org> <20140515183247.GF23659@atomide.com> <5375091D.3010607@ti.com> Message-ID: <5375C145.6070904@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/16/2014 02:36 AM, Santosh Shilimkar wrote: >>> >> yes. >>> >> My board is panda ES. without this revert, it works. >> > >> > Care to specify what linux version you are testing against? >> > >> > Does it hang in idle always immediately on booting? >> > >> > Or does the serial console first hang with sysrq still >> > working (ctrl-a h in minicom for help) with device >> > eventually locking up hard? >> > > I just posted an updated patch Alex on other thread. > Attaching here again for your reference. Please try > it out and see if the you still get a hang. it does not hang this time. but I am not sure it can solve my problem, since RCU stall is not easy to reproduce in short time. -- Thanks Alex