mm/page_alloc.c: mark bad_range() and meminit_pfn_in_nid() as __maybe_unused
The functions are not used in some configurations. Adding the attribute
fixes the following warnings when building with clang:
mm/page_alloc.c:409:19: error: function 'bad_range' is not needed and
will not be emitted [-Werror,-Wunneeded-internal-declaration]
mm/page_alloc.c:1106:30: error: unused function 'meminit_pfn_in_nid'
[-Werror,-Wunused-function]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthias Kaehlcke <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e0f138a..ceb45a8 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -511,7 +511,7 @@ static int page_is_consistent(struct zone *zone, struct page *page)
/*
* Temporary debugging check for pages not lying within a given zone.
*/
-static int bad_range(struct zone *zone, struct page *page)
+static int __maybe_unused bad_range(struct zone *zone, struct page *page)
{
if (page_outside_zone_boundaries(zone, page))
return 1;
@@ -521,7 +521,7 @@ static int bad_range(struct zone *zone, struct page *page)
return 0;
}
#else
-static inline int bad_range(struct zone *zone, struct page *page)
+static inline int __maybe_unused bad_range(struct zone *zone, struct page *page)
{
return 0;
}
@@ -1297,8 +1297,9 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
#endif
#ifdef CONFIG_NODES_SPAN_OTHER_NODES
-static inline bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
- struct mminit_pfnnid_cache *state)
+static inline bool __meminit __maybe_unused
+meminit_pfn_in_nid(unsigned long pfn, int node,
+ struct mminit_pfnnid_cache *state)
{
int nid;
@@ -1320,8 +1321,9 @@ static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
return true;
}
-static inline bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
- struct mminit_pfnnid_cache *state)
+static inline bool __meminit __maybe_unused
+meminit_pfn_in_nid(unsigned long pfn, int node,
+ struct mminit_pfnnid_cache *state)
{
return true;
}
