The patch titled
Subject: mm, page_alloc: print symbolic gfp_flags on allocation failure
has been added to the -mm tree. Its filename is
mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: 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 <vbabka@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff -puN mm/page_alloc.c~mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure mm/page_alloc.c
--- a/mm/page_alloc.c~mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure
+++ a/mm/page_alloc.c
@@ -2703,9 +2703,8 @@ void warn_alloc_failed(gfp_t gfp_mask, u
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);
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
tracepoints-move-trace_print_flags-definitions-to-tracepoint-defsh.patch
mm-tracing-make-show_gfp_flags-up-to-date.patch
tools-perf-make-gfp_compact_table-up-to-date.patch
mm-tracing-unify-mm-flags-handling-in-tracepoints-and-printk.patch
mm-printk-introduce-new-format-string-for-flags.patch
mm-debug-replace-dump_flags-with-the-new-printk-formats.patch
mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
mm-oom-print-symbolic-gfp_flags-in-oom-warning.patch
mm-page_owner-print-migratetype-of-page-and-pageblock-symbolic-flags.patch
mm-page_owner-convert-page_owner_inited-to-static-key.patch
mm-page_owner-copy-page-owner-info-during-migration.patch
mm-page_owner-track-and-print-last-migrate-reason.patch
mm-page_owner-dump-page-owner-info-from-dump_page.patch
mm-debug-move-bad-flags-printing-to-bad_page.patch
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