[PATCH] lib/test_vmalloc.c: Add a new 'nr_pages' parameter

* [PATCH] lib/test_vmalloc.c: Add a new 'nr_pages' parameter
@ 2021-07-10 19:41 Uladzislau Rezki (Sony)
  0 siblings, 0 replies; only message in thread
From: Uladzislau Rezki (Sony) @ 2021-07-10 19:41 UTC (permalink / raw)
  To: Andrew Morton
  Cc: linux-mm, LKML, Mel Gorman, Christoph Hellwig, Matthew Wilcox,
	Nicholas Piggin, Uladzislau Rezki, Hillf Danton, Michal Hocko,
	Oleksiy Avramchenko, Steven Rostedt

In order to simulate different fixed sizes for vmalloc
allocation introduce a new parameter that sets number of
pages to be allocated for the "fix_size_alloc_test" test.

By default 1 page is used unless a different number is
specified over the new parameter.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 lib/test_vmalloc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index 01e9543de566..e14993bc84d2 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -35,6 +35,9 @@ __param(int, test_repeat_count, 1,
 __param(int, test_loop_count, 1000000,
 	"Set test loop counter");
 
+__param(int, nr_pages, 0,
+	"Set number of pages for fix_size_alloc_test(default: 1)");
+
 __param(int, run_test_mask, INT_MAX,
 	"Set tests specified in the mask.\n\n"
 		"\t\tid: 1,    name: fix_size_alloc_test\n"
@@ -262,7 +265,7 @@ static int fix_size_alloc_test(void)
 	int i;
 
 	for (i = 0; i < test_loop_count; i++) {
-		ptr = vmalloc(3 * PAGE_SIZE);
+		ptr = vmalloc((nr_pages > 0 ? nr_pages:1) * PAGE_SIZE);
 
 		if (!ptr)
 			return -1;
-- 
2.20.1


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