From e789803507b2e154ed452865ee981b038654e98d Mon Sep 17 00:00:00 2001 From: "Uladzislau Rezki (Sony)" Date: Thu, 25 Apr 2019 22:23:47 -0700 Subject: [PATCH] lib/test_vmalloc.c: do not create cpumask_t variable on stack On my "Intel(R) Xeon(R) W-2135 CPU @ 3.70GHz" system(12 CPUs) i get the warning from the compiler about frame size: warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=] the size of cpumask_t depends on number of CPUs, therefore just make use of cpumask_of() in set_cpus_allowed_ptr() as a second argument. Link: http://lkml.kernel.org/r/20190418193925.9361-1-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) Reviewed-by: Andrew Morton Reviewed-by: Roman Gushchin Cc: Uladzislau Rezki Cc: Michal Hocko Cc: Matthew Wilcox Cc: Thomas Garnier Cc: Oleksiy Avramchenko Cc: Steven Rostedt Cc: Joel Fernandes Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/test_vmalloc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c index 83cdcaa82bf6..f832b095afba 100644 --- a/lib/test_vmalloc.c +++ b/lib/test_vmalloc.c @@ -383,14 +383,14 @@ static void shuffle_array(int *arr, int n) static int test_func(void *private) { struct test_driver *t = private; - cpumask_t newmask = CPU_MASK_NONE; int random_array[ARRAY_SIZE(test_case_array)]; int index, i, j, ret; ktime_t kt; u64 delta; - cpumask_set_cpu(t->cpu, &newmask); - set_cpus_allowed_ptr(current, &newmask); + ret = set_cpus_allowed_ptr(current, cpumask_of(t->cpu)); + if (ret < 0) + pr_err("Failed to set affinity to %d CPU\n", t->cpu); for (i = 0; i < ARRAY_SIZE(test_case_array); i++) random_array[i] = i; -- 2.30.2