[PATCH] more debugging

[Michal Hocko]

---
 mm/huge_memory.c |    6 +++---
 mm/memcontrol.c  |    1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 470cbb4..01a11f1 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -671,7 +671,7 @@ static inline struct page *alloc_hugepage(int defrag)
 }
 #endif
 
-int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
+noinline int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
 			       unsigned long address, pmd_t *pmd,
 			       unsigned int flags)
 {
@@ -790,7 +790,7 @@ pgtable_t get_pmd_huge_pte(struct mm_struct *mm)
 	return pgtable;
 }
 
-static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
+static noinline int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
 					struct vm_area_struct *vma,
 					unsigned long address,
 					pmd_t *pmd, pmd_t orig_pmd,
@@ -883,7 +883,7 @@ out_free_pages:
 	goto out;
 }
 
-int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
+noinline int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
 			unsigned long address, pmd_t *pmd, pmd_t orig_pmd)
 {
 	int ret = 0;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c8425b1..1986c65 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2397,6 +2397,7 @@ done:
 	return 0;
 nomem:
 	*ptr = NULL;
+	__WARN_printf("gfp_mask:%u nr_pages:%u oom:%d ret:%d\n", gfp_mask, nr_pages, oom, ret);
 	return -ENOMEM;
 bypass:
 	*ptr = NULL;
-- 
1.7.10.4

-- 
Michal Hocko
SUSE Labs
--
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