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authorHyeonggon Yoo <42.hyeyoo@gmail.com>2023-01-30 07:25:14 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-03-29 02:20:09 +0300
commitf2421a16f42a2f121c587c89b60cc8f3f2df36c2 (patch)
tree85ac864cdeabf3cb49f48552059275f887e73ddc /mm/debug.c
parent4c85c0be3d7a9a7ffe48bfe0954eacc0ba9d3c75 (diff)
downloadlinux-f2421a16f42a2f121c587c89b60cc8f3f2df36c2.tar.xz
mm/debug: use %pGt to display page_type in dump_page()
Some page flags are stored in page_type rather than ->flags field. Use newly introduced page type %pGt in dump_page(). Below are some examples: page:00000000da7184dd refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101cb3 flags: 0x2ffff0000000000(node=0|zone=2|lastcpupid=0xffff) page_type: 0xffffffff() raw: 02ffff0000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: newly allocated page page:00000000da7184dd refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x101cb3 flags: 0x2ffff0000000000(node=0|zone=2|lastcpupid=0xffff) page_type: 0xffffff7f(buddy) raw: 02ffff0000000000 ffff88813fff8e80 ffff88813fff8e80 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffff7f 0000000000000000 page dumped because: freed page page:0000000042202316 refcount:3 mapcount:2 mapping:0000000000000000 index:0x7f634722a pfn:0x11994e memcg:ffff888100135000 anon flags: 0x2ffff0000080024(uptodate|active|swapbacked|node=0|zone=2|lastcpupid=0xffff) page_type: 0x1() raw: 02ffff0000080024 0000000000000000 dead000000000122 ffff8881193398f1 raw: 00000007f634722a 0000000000000000 0000000300000001 ffff888100135000 page dumped because: user-mapped page Link: https://lkml.kernel.org/r/20230130042514.2418-4-42.hyeyoo@gmail.com Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Matthew Wilcox <willy@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/debug.c')
-rw-r--r--mm/debug.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/debug.c b/mm/debug.c
index 01cf0435723b..c7b228097bd9 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -120,6 +120,8 @@ static void __dump_page(struct page *page)
pr_warn("%sflags: %pGp%s\n", type, &head->flags,
page_cma ? " CMA" : "");
+ pr_warn("page_type: %pGt\n", &head->page_type);
+
print_hex_dump(KERN_WARNING, "raw: ", DUMP_PREFIX_NONE, 32,
sizeof(unsigned long), page,
sizeof(struct page), false);