[RFC PATCH] arm: asm/cmpxchg.h: Add support half-word xchg()

[Pranith Kumar]

On Wed, Feb 25, 2015 at 12:02 PM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
>> Unfortunately, the BUG message seems incomplete, can you reproduce this
>> with CONFIG_DEBUG_BUGVERBOSE enabled?
>
> That isn't because CONFIG_DEBUG_BUGVERBOSE isn't set.  It's because
> the message author decided that the remainder of the kernel bug message
> wasn't useful to report.  After all, it's just a load of hex numbers
> and symbolic information.  Who would want that junk.
>
> (Some people really don't get this: we print stuff from the kernel
> because it gives _us_ useful information to debug problems like this,
> but because they don't understand it themselves, they decide they can
> omit it from their bug reports...)
>

I apologize for not pasting the entire back trace. It was in a test
module I wrote testing synchronization primitives and did not think
the back trace would be useful to report.

I will include verbose details from now on.

Thanks!
-- 
Pranith