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| author | Wu Fengguang <fengguang.wu@intel.com> | 2010-03-10 15:20:43 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:28 -0800 |
| commit | 718a38211bf4375c0a1efad3afbc5dbaef5d33f9 (patch) | |
| tree | ade6815c619705f0342f98cc8bb39fa3309c81a6 /mm/memory_hotplug.c | |
| parent | 9b3a6549b2602ca30f58715a0071e29f9898cae9 (diff) | |
| download | lwn-718a38211bf4375c0a1efad3afbc5dbaef5d33f9.tar.gz lwn-718a38211bf4375c0a1efad3afbc5dbaef5d33f9.zip | |
mm: introduce dump_page() and print symbolic flag names
- introduce dump_page() to print the page info for debugging some error
condition.
- convert three mm users: bad_page(), print_bad_pte() and memory offline
failure.
- print an extra field: the symbolic names of page->flags
Example dump_page() output:
[ 157.521694] page:ffffea0000a7cba8 count:2 mapcount:1 mapping:ffff88001c901791 index:0x147
[ 157.525570] page flags: 0x100000000100068(uptodate|lru|active|swapbacked)
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Alex Chiang <achiang@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Mel Gorman <mel@linux.vnet.ibm.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 78e34e63c7b8..be211a582930 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -688,9 +688,9 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) if (page_count(page)) not_managed++; #ifdef CONFIG_DEBUG_VM - printk(KERN_INFO "removing from LRU failed" - " %lx/%d/%lx\n", - pfn, page_count(page), page->flags); + printk(KERN_ALERT "removing pfn %lx from LRU failed\n", + pfn); + dump_page(page); #endif } } |