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/20210710194151.21370-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index 01e9543..e14993b 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;
