From 5bb1bb353cfe343fc3c84faf06f72ba309fde541 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 7 Jan 2021 13:46:11 -0800 Subject: mm: Don't build mm_dump_obj() on CONFIG_PRINTK=n kernels The mem_dump_obj() functionality adds a few hundred bytes, which is a small price to pay. Except on kernels built with CONFIG_PRINTK=n, in which mem_dump_obj() messages will be suppressed. This commit therefore makes mem_dump_obj() be a static inline empty function on kernels built with CONFIG_PRINTK=n and excludes all of its support functions as well. This avoids kernel bloat on systems that cannot use mem_dump_obj(). Cc: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Cc: Suggested-by: Andrew Morton Signed-off-by: Paul E. McKenney --- mm/slub.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'mm/slub.c') diff --git a/mm/slub.c b/mm/slub.c index e26c274b4657..077a019e4d7a 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3963,6 +3963,7 @@ int __kmem_cache_shutdown(struct kmem_cache *s) return 0; } +#ifdef CONFIG_PRINTK void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page) { void *base; @@ -4002,6 +4003,7 @@ void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page) #endif #endif } +#endif /******************************************************************** * Kmalloc subsystem -- cgit v1.2.3-59-g8ed1b