Re: [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault

[Alexey Brodkin]

Hi Noam,

On Thu, 2017-05-25 at 05:34 +0300, Noam Camus wrote:
> From: Noam Camus <noamca@xxxxxxxxxxxx>
> 
> This patch is derived due to performance issue.
> The use case is a page fault that resides on more than the local cpu.
> Trying to broadcast all CPUs results on performance degradation.
> So we try to avoid this by sending only to the relevant CPUs.
> 
> Signed-off-by: Noam Camus <noamca@xxxxxxxxxxxx>

Really nice catch!

Reviewed-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>