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/vmalloc.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'mm/vmalloc.c') diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 4f5f8c907897..d5f2a84e488a 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3450,6 +3450,7 @@ void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms) } #endif /* CONFIG_SMP */ +#ifdef CONFIG_PRINTK bool vmalloc_dump_obj(void *object) { struct vm_struct *vm; @@ -3462,6 +3463,7 @@ bool vmalloc_dump_obj(void *object) vm->nr_pages, (unsigned long)vm->addr, vm->caller); return true; } +#endif #ifdef CONFIG_PROC_FS static void *s_start(struct seq_file *m, loff_t *pos) -- cgit v1.2.3