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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_common.c
parenta38fd8748464831584a19438cbb3082b5a2dab15 (diff)
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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_common.c')
-rw-r--r--mm/slab_common.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 88e833986332..cec95363e621 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -526,6 +526,7 @@ bool slab_is_available(void)
return slab_state >= UP;
}
+#ifdef CONFIG_PRINTK
/**
* kmem_valid_obj - does the pointer reference a valid slab object?
* @object: pointer to query.
@@ -600,6 +601,7 @@ void kmem_dump_obj(void *object)
pr_info(" %pS\n", kp.kp_stack[i]);
}
}
+#endif
#ifndef CONFIG_SLOB
/* Create a cache during boot when no slab services are available yet */