From c5c990e8a1fe313a5ab13f069f1410acf932927b Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Tue, 15 Mar 2016 14:56:02 -0700 Subject: [PATCH] mm, page_alloc: print symbolic gfp_flags on allocation failure It would be useful to translate gfp_flags into string representation when printing in case of an allocation failure, especially as the flags have been undergoing some changes recently and the script ./scripts/gfp-translate needs a matching source version to be accurate. Example output: stapio: page allocation failure: order:9, mode:0x2080020(GFP_ATOMIC) Signed-off-by: Vlastimil Babka Acked-by: Michal Hocko Acked-by: David Rientjes Cc: Joonsoo Kim Cc: Minchan Kim Cc: Sasha Levin Cc: "Kirill A. Shutemov" Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 36a0a792f4f8..4e8029a7a4bf 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2695,9 +2695,8 @@ void warn_alloc_failed(gfp_t gfp_mask, unsigned int order, const char *fmt, ...) va_end(args); } - pr_warn("%s: page allocation failure: order:%u, mode:0x%x\n", - current->comm, order, gfp_mask); - + pr_warn("%s: page allocation failure: order:%u, mode:%#x(%pGg)\n", + current->comm, order, gfp_mask, &gfp_mask); dump_stack(); if (!should_suppress_show_mem()) show_mem(filter);