All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
To: Kiryl Shutsemau <kirill@shutemov.name>
Cc: akpm@linux-foundation.org, david@kernel.org,
	nico.pache@linux.dev,  baolin.wang@linux.alibaba.com,
	baohua@kernel.org, dev.jain@arm.com, hughd@google.com,
	 lance.yang@linux.dev, liam@infradead.org, mhocko@suse.com,
	rppt@kernel.org,  ryan.roberts@arm.com, shuah@kernel.org,
	surenb@google.com, usama.arif@linux.dev,  vbabka@kernel.org,
	ziy@nvidia.com, usama.anjum@arm.com, agordeev@linux.ibm.com,
	 linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	linux-kernel@vger.kernel.org,  kas@kernel.org
Subject: Re: [PATCH v4 01/19] selftests/mm: raise the khugepaged test-case cap
Date: Tue, 18 Aug 2026 10:11:40 +0100	[thread overview]
Message-ID: <aoQhxXxatSHKEknn@lucifer> (raw)
In-Reply-To: <20260815015901.1236937-2-kirill@shutemov.name>

On Sat, Aug 15, 2026 at 02:58:43AM +0100, Kiryl Shutsemau wrote:
> From: "Kiryl Shutsemau (Meta)" <kas@kernel.org>
>
> TEST() ends the run with "MAX_TEST_CASES is too small" when the table
> fills, and the table holds 64.  A full invocation already registers 63, so
> the next case added anywhere aborts the whole suite before a single test
> runs.
>
> Raise the cap to 256.  The table is a static array of small structs, so the
> room costs nothing worth counting.
>
> Assisted-by: Claude-Code:claude-opus-5
> Acked-by: Usama Arif <usama.arif@linux.dev>
> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>

Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

> ---
>  tools/testing/selftests/mm/khugepaged.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
> index d3a53673e1f9..6cfec2b940ac 100644
> --- a/tools/testing/selftests/mm/khugepaged.c
> +++ b/tools/testing/selftests/mm/khugepaged.c
> @@ -1290,7 +1290,7 @@ struct test_case {
>  	test_fn fn;
>  };
>
> -#define MAX_TEST_CASES 64
> +#define MAX_TEST_CASES 256
>  static struct test_case test_cases[MAX_TEST_CASES];
>  static int nr_test_cases;
>
> --
> 2.54.0
>

--
Cheers, Lorenzo


  reply	other threads:[~2026-08-18  9:12 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-15  1:58 [PATCH v4 00/19] selftests/mm: improve khugepaged coverage Kiryl Shutsemau
2026-08-15  1:58 ` [PATCH v4 01/19] selftests/mm: raise the khugepaged test-case cap Kiryl Shutsemau
2026-08-18  9:11   ` Lorenzo Stoakes (ARM) [this message]
2026-08-15  1:58 ` [PATCH v4 02/19] selftests/mm: skip collapse_compound_extreme() where the PMD is too large Kiryl Shutsemau
2026-08-18  9:22   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 03/19] selftests/mm: scale khugepaged's collapse wait with the PMD size Kiryl Shutsemau
2026-08-18 10:04   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 04/19] selftests/mm: skip khugepaged page cache cases without a PMD folio Kiryl Shutsemau
2026-08-18 10:07   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 05/19] selftests/mm: make the swap cases' swapout reliable Kiryl Shutsemau
2026-08-18 10:11   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 06/19] selftests/mm: stop khugepaged during the MADV_COLLAPSE cases Kiryl Shutsemau
2026-08-18 10:12   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 07/19] selftests/mm: move is_backed_by_folio() into vm_util Kiryl Shutsemau
2026-08-18 10:14   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 08/19] selftests/mm: add folio-order check for address ranges Kiryl Shutsemau
2026-08-18 10:25   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 09/19] selftests/mm: add folio-order detection self-check Kiryl Shutsemau
2026-08-18 10:30   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 10/19] selftests/mm: add khugepaged completion barrier helper Kiryl Shutsemau
2026-08-18 10:34   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 11/19] selftests/mm: add order-parameterized khugepaged collapse cases Kiryl Shutsemau
2026-08-18 10:38   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 12/19] selftests/mm: parameterize the mixed-source collapse case by source order Kiryl Shutsemau
2026-08-18 10:47   ` Lorenzo Stoakes (ARM)
2026-08-15  1:58 ` [PATCH v4 13/19] selftests/mm: cover a shared-source collapse write race Kiryl Shutsemau
2026-08-15  1:58 ` [PATCH v4 14/19] selftests/mm: run every supported collapse order by default Kiryl Shutsemau
2026-08-15  1:58 ` [PATCH v4 15/19] selftests/mm: check that one khugepaged pass collapses one window Kiryl Shutsemau
2026-08-15  1:58 ` [PATCH v4 16/19] selftests/mm: add khugepaged race harness Kiryl Shutsemau
2026-08-15  1:58 ` [PATCH v4 17/19] selftests/mm: race collapse of windows with holes Kiryl Shutsemau
2026-08-15  1:59 ` [PATCH v4 18/19] selftests/mm: add memory-pressure threads to the khugepaged race harness Kiryl Shutsemau
2026-08-15  1:59 ` [PATCH v4 19/19] selftests/mm: zap whole PTE tables in " Kiryl Shutsemau

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=aoQhxXxatSHKEknn@lucifer \
    --to=ljs@kernel.org \
    --cc=agordeev@linux.ibm.com \
    --cc=akpm@linux-foundation.org \
    --cc=baohua@kernel.org \
    --cc=baolin.wang@linux.alibaba.com \
    --cc=david@kernel.org \
    --cc=dev.jain@arm.com \
    --cc=hughd@google.com \
    --cc=kas@kernel.org \
    --cc=kirill@shutemov.name \
    --cc=lance.yang@linux.dev \
    --cc=liam@infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mhocko@suse.com \
    --cc=nico.pache@linux.dev \
    --cc=rppt@kernel.org \
    --cc=ryan.roberts@arm.com \
    --cc=shuah@kernel.org \
    --cc=surenb@google.com \
    --cc=usama.anjum@arm.com \
    --cc=usama.arif@linux.dev \
    --cc=vbabka@kernel.org \
    --cc=ziy@nvidia.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.