Re: [PATCH v5 1/2] mm, vmstat: calculate particular vm event

From: Christoph Lameter
Date: Thu Apr 07 2016 - 16:15:35 EST


On Thu, 7 Apr 2016, Ebru Akagunduz wrote:

> Currently, vmstat can calculate specific vm event with all_vm_events()
> however it allocates all vm events to stack. This patch introduces
> a helper to sum value of a specific vm event over all cpu, without
> loading all the events.

The first sentence is inaccurate. all_vm_events() takes a pointer to an
array of of counters and does not allocate on the stack. Fix this and
then add

Acked-by: Christoph Lameter <cl@xxxxxxxxx>