Re: [PATCH v9 00/13] support "task_isolation" mode for nohz_full

From: Will Deacon
Date: Tue Jan 12 2016 - 05:07:54 EST

On Mon, Jan 11, 2016 at 04:15:50PM -0500, Chris Metcalf wrote:
> Ping! There has been no substantive feedback to this version of
> the patch in the week since I posted it, which optimistically suggests
> to me that people may be satisfied with it. If that's true, Frederic,
> I assume this would be pulled into your tree?
> I have slightly updated the v9 patch series since this posting:
> - Incorporated a fix to initialize cpu_isolation_mask early if no
> cpu_isolation= boot argument was given, to avoid crashing on
> - Incorporated Mark Rutland's changes to convert arm64
> assembly to C code instead of using my own version.

Please avoid queuing these patches -- the first is already in the arm64
queue for 4.5 and the second was found to introduce a substantial
performance regression on the syscall entry/exit path. I think Mark had
an updated version to address that, so it would be easier not to have
an old version sitting in some other queue!