linux-kernel - Re: [PATCH] selftests/mm: run_vmtests.sh: Fix hugetlb mem size calculation

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Date: Fri, 22 Mar 2024 11:50:50 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Peter Xu <peterx@...hat.com>
Cc: Linux-MM <linux-mm@...ck.org>,
 LKML <linux-kernel@...r.kernel.org>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Muhammad Usama Anjum <usama.anjum@...labora.com>,
 David Hildenbrand <david@...hat.com>,
 Nico Pache <npache@...hat.com>
Subject: Re: [PATCH] selftests/mm: run_vmtests.sh: Fix hugetlb mem size
 calculation



> On Mar 22, 2024, at 05:50, peterx@...hat.com wrote:
> 
> From: Peter Xu <peterx@...hat.com>
> 
> The script calculates a mininum required size of hugetlb memories, but
> it'll stop working with <1MB huge page sizes, reporting all zeros even if
> huge pages are available.
> 
> In reality, the calculation doesn't really need to be as comlicated either.

                                                               ^
                                                           complicated?

> Make it simpler and work for KB-level hugepages too.
> 
> Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>
> Cc: David Hildenbrand <david@...hat.com>
> Cc: Nico Pache <npache@...hat.com>
> Cc: Muchun Song <muchun.song@...ux.dev>
> Signed-off-by: Peter Xu <peterx@...hat.com>

Reviewed-by: Muchun Song <muchun.song@...ux.dev>

Thanks.