Re: [RFC][RT][PATCH] mm: Do not use stop_machine() for __zone_pcp_udpate()for CONFIG_PREEMPT_RT_FULL

[Frank Rowand]

On 06/19/12 12:46, Frank Rowand wrote:
> Adding to the distribution list: the author of the patch that included
> the call to stop_machine() (commit 112067f0905b2de862c607ee62411cf47d2fe5c4).
> 
> On 06/19/12 11:32, Aaditya Kumar wrote:
>> The code path of __zone_pcp_update() has following locks, which in
>> CONFIG_PREEMPT_RT_FULL=y are rt-mutex.
>>   - pa_lock locked by cpu_lock_irqsave()
>>   - zone->lock locked by free_pcppages_bulk()
>>
>> Since __zone_pcp_update() is called from stop_machine(), so with

< snip >

... and just for the record, adding the author (Shaohua Li) did not
work, I got an email reject from Intel.

-Frank

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/