The patch titled
Subject: lib/test_meminit: allocate pages up to order MAX_ORDER
has been added to the -mm mm-unstable branch. Its filename is
lib-test_meminit-allocate-pages-up-to-order-max_order.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-test_meminit-allocate-pages-up-to-order-max_order.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Andrew Donnellan <ajd@xxxxxxxxxxxxx>
Subject: lib/test_meminit: allocate pages up to order MAX_ORDER
Date: Fri, 14 Jul 2023 11:52:38 +1000
test_pages() tests the page allocator by calling alloc_pages() with
different orders up to order 10.
However, different architectures and platforms support different maximum
contiguous allocation sizes. The default maximum allocation order
(MAX_ORDER) is 10, but architectures can use CONFIG_ARCH_FORCE_MAX_ORDER
to override this. On platforms where this is less than 10, test_meminit()
will blow up with a WARN(). This is expected, so let's not do that.
Replace the hardcoded "10" with the MAX_ORDER macro so that we test
allocations up to the expected platform limit.
Link: https://lkml.kernel.org/r/20230714015238.47931-1-ajd@xxxxxxxxxxxxx
Fixes: 5015a300a522 ("lib: introduce test_meminit module")
Signed-off-by: Andrew Donnellan <ajd@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_meminit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/test_meminit.c~lib-test_meminit-allocate-pages-up-to-order-max_order
+++ a/lib/test_meminit.c
@@ -93,7 +93,7 @@ static int __init test_pages(int *total_
int failures = 0, num_tests = 0;
int i;
- for (i = 0; i < 10; i++)
+ for (i = 0; i <= MAX_ORDER; i++)
num_tests += do_alloc_pages_order(i, &failures);
REPORT_FAILURES_IN_FN();
_
Patches currently in -mm which might be from ajd@xxxxxxxxxxxxx are
lib-test_meminit-allocate-pages-up-to-order-max_order.patch
