Re: [PATCH v4 06/16] mm: Track NR_KERNEL_STACK in KiB instead of number of stacks

On Thu, Jun 23, 2016 at 09:23:01PM -0700, Andy Lutomirski wrote:

Currently, NR_KERNEL_STACK tracks the number of kernel stacks in a
zone.  This only makes sense if each kernel stack exists entirely in
one zone, and allowing vmapped stacks could break this assumption.

Since frv has THREAD_SIZE < PAGE_SIZE, we need to track kernel stack
allocations in a unit that divides both THREAD_SIZE and PAGE_SIZE on
all architectures.  Keep it simple and use KiB.

Cc: Vladimir Davydov <redacted>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: linux-mm@kvack.org
Reviewed-by: Vladimir Davydov <redacted>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>

Reviewed-by: Josh Poimboeuf <redacted>

-- 
Josh

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