[Linux-kernel-mentees] [PATCH] doc: RCU callback locks need only _bh, not necessarily _irq

Shuah Khan skhan at linuxfoundation.org
Thu Jun 27 22:11:51 UTC 2019


On 6/27/19 4:10 PM, Paul E. McKenney wrote:
> On Thu, Jun 27, 2019 at 04:01:35PM -0600, Shuah Khan wrote:
>> On 6/27/19 3:01 PM, Jiunn Chang wrote:
>>> The UP.rst file calls for locks acquired within RCU callback functions
>>> to use _irq variants (spin_lock_irqsave() or similar), which does work,
>>> but can be overkill.  This commit therefore instead calls for _bh variants
>>> (spin_lock_bh() or similar), while noting that _irq does work.
>>>
>>> Signed-off-by: Paul E. McKenney <paulmck at linux.ibm.com>
>>
>> Should this by Suggested-by?
> 
> I wrote it and Jiunn converted my change to .rst, so I believe that
> this is correct as is.
> 

Great.

thanks,
-- Shuah


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