[139/212] lib/test_vmalloc.c: add a new 'nr_pages' parameter

Commit Message

Andrew Morton Sept. 2, 2021, 9:57 p.m. UTC

From: "Uladzislau Rezki (Sony)" <[e-mail]>
Subject: lib/test_vmalloc.c: add a new 'nr_pages' parameter

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.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Uladzislau Rezki (Sony) <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: Christoph Hellwig <[e-mail]>
Cc: Matthew Wilcox <[e-mail]>
Cc: Nicholas Piggin <[e-mail]>
Cc: Hillf Danton <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Cc: Oleksiy Avramchenko <[e-mail]>
Cc: Steven Rostedt <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 lib/test_vmalloc.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Patch

--- a/lib/test_vmalloc.c~lib-test_vmallocc-add-a-new-nr_pages-parameter
+++ a/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;