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

From: Shuah Khan
Date: Thu Jun 27 2019 - 18:11:55 EST


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@xxxxxxxxxxxxx>

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