Re: [PATCH v7 0/4] THP aware uprobe

[Song Liu]

Hi Oleg, 

> On Jun 25, 2019, at 4:53 PM, Song Liu <songliubraving@xxxxxx> wrote:
> 
> This set makes uprobe aware of THPs.
> 
> Currently, when uprobe is attached to text on THP, the page is split by
> FOLL_SPLIT. As a result, uprobe eliminates the performance benefit of THP.
> 
> This set makes uprobe THP-aware. Instead of FOLL_SPLIT, we introduces
> FOLL_SPLIT_PMD, which only split PMD for uprobe.
> 
> TODO (temporarily removed in v7):
> After all uprobes within the THP are removed, regroup the PTE-mapped pages
> into huge PMD.
> 
> This set (plus a few THP patches) is also available at
> 
>   https://github.com/liu-song-6/linux/tree/uprobe-thp
> 

Do you have further comments/suggestions on this work? If not, could you 
please add your Acked-by or Reviewed-by? 

Thanks,
Song