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lib/test_meminit: allocate pages up to order MAX_ORDER 

commit efb78fa86e upstream.

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@linux.ibm.com
Fixes: 5015a300a5 ("lib: introduce test_meminit module")
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Xiaoke Wang <xkernel.wang@foxmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Donnellan 2023-07-14 11:52:38 +10:00 committed by Greg Kroah-Hartman
parent 6a99d82d84
commit 16e5d74e12
1 changed files with 1 additions and 1 deletions
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lib/test_meminit.c
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@ -93,7 +93,7 @@ static int __init test_pages(int *total_failures)
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();