diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index c2dd786a30e1f7c39bd52b8ae4aa78625092eaf1..49779f85e1da95c4e5ef14de6ab3c265dc82f479 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -87,9 +87,7 @@ void collect_procs_ksm(struct page *page, struct list_head *to_kill,
 		       int force_early);
 #endif
 
-#ifdef CONFIG_PROC_FS
 long ksm_process_profit(struct mm_struct *);
-#endif /* CONFIG_PROC_FS */
 
 #else  /* !CONFIG_KSM */
 
diff --git a/mm/ksm.c b/mm/ksm.c
index 7401a6c87a4bee9b1fa39a4b61f62c0e3838a175..dba6a2eb1a3c5f5468b53c72ab9ebed3a11d96e7 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -3106,13 +3106,11 @@ static void wait_while_offlining(void)
 }
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 
-#ifdef CONFIG_PROC_FS
 long ksm_process_profit(struct mm_struct *mm)
 {
 	return (long)(mm->ksm_merging_pages + mm->ksm_zero_pages) * PAGE_SIZE -
 		mm->ksm_rmap_items * sizeof(struct ksm_rmap_item);
 }
-#endif /* CONFIG_PROC_FS */
 
 #ifdef CONFIG_SYSFS
 /*