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authorPaul E. McKenney <paulmck@kernel.org>2021-01-07 13:46:11 -0800
committerPaul E. McKenney <paulmck@kernel.org>2021-03-08 14:18:46 -0800
commit5bb1bb353cfe343fc3c84faf06f72ba309fde541 (patch)
tree7a6f234b6247c3821fa2acb95c9a99e38ba24b65 /mm/slab.c
parenta38fd8748464831584a19438cbb3082b5a2dab15 (diff)
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 <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: <linux-mm@kvack.org> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 51fd424e0d6d..2e64efeb99a1 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3651,6 +3651,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
EXPORT_SYMBOL(__kmalloc_node_track_caller);
#endif /* CONFIG_NUMA */
+#ifdef CONFIG_PRINTK
void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page)
{
struct kmem_cache *cachep;
@@ -3670,6 +3671,7 @@ void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page)
if (DEBUG && cachep->flags & SLAB_STORE_USER)
kpp->kp_ret = *dbg_userword(cachep, objp);
}
+#endif
/**
* __do_kmalloc - allocate memory