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authorPaul E. McKenney <paulmck@kernel.org>2021-01-08 00:46:11 +0300
committerPaul E. McKenney <paulmck@kernel.org>2021-03-09 01:18:46 +0300
commit5bb1bb353cfe343fc3c84faf06f72ba309fde541 (patch)
tree7a6f234b6247c3821fa2acb95c9a99e38ba24b65 /mm/slab.h
parenta38fd8748464831584a19438cbb3082b5a2dab15 (diff)
downloadlinux-5bb1bb353cfe343fc3c84faf06f72ba309fde541.tar.xz
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.h')
-rw-r--r--mm/slab.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h
index 076582f58f68..120b1d0dfb6d 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -619,6 +619,7 @@ static inline bool slab_want_init_on_free(struct kmem_cache *c)
return false;
}
+#ifdef CONFIG_PRINTK
#define KS_ADDRS_COUNT 16
struct kmem_obj_info {
void *kp_ptr;
@@ -630,5 +631,6 @@ struct kmem_obj_info {
void *kp_stack[KS_ADDRS_COUNT];
};
void kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct page *page);
+#endif
#endif /* MM_SLAB_H */