From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx> 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/20210710194151.21370-1-urezki@xxxxxxxxx Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx> Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> Cc: Nicholas Piggin <npiggin@xxxxxxxxx> Cc: Hillf Danton <hdanton@xxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxx> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxxxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/test_vmalloc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- 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; _
