[PATCH v2 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC
From: Christian Borntraeger <hidden>
Date: 2016-01-27 08:51:05
Also in:
linux-arch, linux-mm, linux-s390, lkml
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
We can provide debug_pagealloc_enabled() also if CONFIG_DEBUG_PAGEALLOC is not set. It will return false in that case. Signed-off-by: Christian Borntraeger <redacted> Acked-by: David Rientjes <rientjes@google.com> --- include/linux/mm.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7783073..56cab4e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -2147,13 +2147,18 @@ kernel_map_pages(struct page *page, int numpages, int enable) #ifdef CONFIG_HIBERNATION extern bool kernel_page_present(struct page *page); #endif /* CONFIG_HIBERNATION */ -#else +#else /* CONFIG_DEBUG_PAGEALLOC */ +static inline bool debug_pagealloc_enabled(void) +{ + return false; +} + static inline void kernel_map_pages(struct page *page, int numpages, int enable) {} #ifdef CONFIG_HIBERNATION static inline bool kernel_page_present(struct page *page) { return true; } #endif /* CONFIG_HIBERNATION */ -#endif +#endif /* CONFIG_DEBUG_PAGEALLOC */ #ifdef __HAVE_ARCH_GATE_AREA extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm);
--
2.3.0