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authorPaul E. McKenney <paulmck@kernel.org>2021-01-07 22:46:11 +0100
committerPaul E. McKenney <paulmck@kernel.org>2021-03-08 23:18:46 +0100
commit5bb1bb353cfe343fc3c84faf06f72ba309fde541 (patch)
tree7a6f234b6247c3821fa2acb95c9a99e38ba24b65 /mm/vmalloc.c
parentLinux 5.12-rc2 (diff)
downloadlinux-5bb1bb353cfe343fc3c84faf06f72ba309fde541.tar.xz
linux-5bb1bb353cfe343fc3c84faf06f72ba309fde541.zip
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/vmalloc.c')
-rw-r--r--mm/vmalloc.c2
1 files changed, 2 insertions, 0 deletions
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)