[LTP] [PATCH v2 05/13] hugeshmctl02: Fix allocation size for odd number of hugepages

[Punit Agrawal <punit.agrawal@arm.com>]

From: "Suzuki K. Poulose" <suzuki.poulose@arm.com>

The test tries to allocate 2 * (half the number of available hugepages).
If we have odd number hugepages, the calculated allocation size is not
page-aligned and allocation fails.

e.g, (use -s option to trigger it manually)

$ hugeshmctl02 -s 7 -i 5
hugeshmctl02    0  TINFO  :  set nr_hugepages to 7
hugeshmctl02    1  TBROK  :  hugeshmctl02.c:153: shmget #2: errno=ENOMEM(12): Cannot allocate memory
hugeshmctl02    2  TBROK  :  hugeshmctl02.c:153: Remaining cases broken
hugeshmctl02    0  TINFO  :  set nr_hugepages to 0

Align the size to hugepage_size.

Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
---
 testcases/kernel/mem/hugetlb/hugeshmctl/hugeshmctl02.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/mem/hugetlb/hugeshmctl/hugeshmctl02.c b/testcases/kernel/mem/hugetlb/hugeshmctl/hugeshmctl02.c
index 6079d9937..82964a327 100644
--- a/testcases/kernel/mem/hugetlb/hugeshmctl/hugeshmctl02.c
+++ b/testcases/kernel/mem/hugetlb/hugeshmctl/hugeshmctl02.c
@@ -101,7 +101,7 @@ static void setup(void)
 	set_sys_tune("nr_hugepages", hugepages, 1);
 	hpage_size = SAFE_READ_MEMINFO("Hugepagesize:") * 1024;
 
-	shm_size = hpage_size * hugepages / 2;
+	shm_size = hpage_size * (hugepages / 2);
 	update_shm_size(&shm_size);
 	shmkey = getipckey();
 
-- 
2.14.2