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Message-ID: <20120621195428.GC13496@netboy.at.omicron.at> Date: Thu, 21 Jun 2012 21:54:28 +0200 From: Richard Cochran <richardcochran@...il.com> To: satpal parmar <systems.satpal@...il.com> Cc: netdev@...r.kernel.org Subject: Re: PTP + H/W time stamping + CONFIG_PREEMPT_RT_FULL == Oops in slab I suspect this isn't a time stamping bug, but rather that the time stamping code just triggers the issue. My own experience has been that preempt_rt on arm is quite shaky. On Thu, Jun 21, 2012 at 08:09:11PM +0530, satpal parmar wrote: > I am not sure if this is the right mailing list. If anyone know better > forum please direct me to that. Appreciate your patience and time. Maybe lkml or rt-users would be better. However, there are really too many variables, and I recommend first narrowing the problem down. Here are a few ideas. 1. use a mainline kernel plus rt patch (without vendor/custom changes) 2. try to trigger issue without using ptpd2 (like stress testing) 3. write a simple test case (like sending a single PTP sync) and instrument your kernel Good luck, Richard -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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