Re: [PATCH v2] uprobes: Improve the usage of xol slots for better scalability

[Oleg Nesterov]

On 09/27, Liao Chang wrote:
>
> The uprobe handler allocates xol slot from xol_area and quickly release
> it in the single-step handler. The atomic operations on the xol bitmap
> and slot_count lead to expensive cache line bouncing between multiple
> CPUs.

Liao, could you please check if this series

	[PATCH 0/2] uprobes: kill xol_area->slot_count
	https://lore.kernel.org/all/20241001142416.GA13599@xxxxxxxxxx/

makes any difference performance-wise in your testing?

Oleg.