Re: CONFIG_VMAP_STACK, on-stack struct, and wake_up_bit

[Bob Peterson]

----- Original Message -----
| On Wed, Oct 26, 2016 at 11:04 AM, Bob Peterson <rpeterso@xxxxxxxxxx> wrote:
| >
| > I can test it for you, if you give me about an hour.

Sorry. I guess I underestimated the time it takes to build a kernel
on my test box. It will take a little longer, but it's compiling now.
 
| I can definitely wait an hour, it would be lovely to see more testing.
| Especially if you have a NUMA machine and an interesting workload.

I'll see what I can cook up.
 
| And if you actually have that NUMA machine and a load that shows the
| page_waietutu effects, it would also be lovely if you can then
| _additionally_ test the patch that PeterZ wrote a few weeks ago, it
| was on the mm list about a month ago:
| 
|   Date: Thu, 29 Sep 2016 15:08:27 +0200
|   From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
|   Subject: Re: page_waitqueue() considered harmful
|   Message-ID: <20160929130827.GX5016@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
| 
| and if you don't find it I can forward it to you (Peter had a few
| versions, that latest one is the one that looked best).

I'll see what I can do, but first I'll check basic functionality
and report back.
 
Bob Peterson