From: khilman@linaro•org (Kevin Hilman)
To: linux-arm-kernel@lists•infradead.org
Subject: omap4-panda-es boot issues with v3.15-rc4
Date: Fri, 09 May 2014 16:45:33 -0700 [thread overview]
Message-ID: <7heh02ms82.fsf@paris.lan> (raw)
In-Reply-To: <536C9084.50209@ti.com> (Roger Quadros's message of "Fri, 9 May 2014 11:23:32 +0300")
Roger Quadros <rogerq@ti•com> writes:
> Kevin,
>
> On 05/09/2014 01:15 AM, Kevin Hilman wrote:
>> Tony Lindgren <tony@atomide•com> writes:
>>
>> [...]
>>
>>> ..but I think I found the cause for recent hangs on panda, just a wild
>>> guess based on looking at the recent cpuidle patches after v3.14.
>>>
>>> Looks like reverting 0b89e9aa2856 (cpuidle: delay enabling interrupts
>>> until all coupled CPUs leave idle) makes booting work reliably again
>>> on panda.
>>>
>>> Can you guys confirm, so far no issues here after few boot tests,
>>> but it might be too early to tell.
>>
>> Reverting that makes things a bit more stable, but it still eventually
>> fails in the same way. For me it took 8 boots for it to eventually
>> fail.
>>
>> However, if I build with CONFIG_CPU_IDLE=n, it becomes much more stable
>> (20+ boots in a row and still going.)
>>
>
> Can you please test with CPU_IDLE enabled but C3 disabled as in below patch?
> It worked for me 10/10 boots.
Yup, it worked for me too for 10/10 boots in a row.
Kevin
next prev parent reply other threads:[~2014-05-09 23:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-08 12:53 omap4-panda-es boot issues with v3.15-rc4 Roger Quadros
2014-05-08 15:31 ` Kevin Hilman
2014-05-08 15:40 ` Kevin Hilman
2014-05-08 16:55 ` Tony Lindgren
2014-05-08 18:40 ` Tony Lindgren
2014-05-08 22:15 ` Kevin Hilman
2014-05-09 8:23 ` Roger Quadros
2014-05-09 23:45 ` Kevin Hilman [this message]
2014-05-11 15:55 ` Tony Lindgren
2014-05-12 21:40 ` Santosh Shilimkar
2014-05-12 22:07 ` Tony Lindgren
2014-05-13 8:10 ` Roger Quadros
2014-05-13 14:19 ` Santosh Shilimkar
2014-05-12 23:56 ` Kevin Hilman
2014-05-09 8:20 ` Roger Quadros
2014-05-08 17:12 ` Grygorii Strashko
2014-05-09 8:30 ` Roger Quadros
2014-05-09 12:33 ` Nishanth Menon
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