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| author | Mel Gorman <mel@csn.ul.ie> | 2008-07-23 21:26:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 10:47:13 -0700 |
| commit | 708614e6180f398cd307ea0048d48ba6fa274610 (patch) | |
| tree | 8fedf22cf9a2f404e2aef10c5b3858b99880c4c2 /mm/internal.h | |
| parent | 6b74ab97bc12ce74acec900f1d89a4aee2e4d70d (diff) | |
| download | lwn-708614e6180f398cd307ea0048d48ba6fa274610.tar.gz lwn-708614e6180f398cd307ea0048d48ba6fa274610.zip | |
mm: verify the page links and memory model
Print out information on how the page flags are being used if mminit_loglevel
is MMINIT_VERIFY or higher and unconditionally performs sanity checks on the
flags regardless of loglevel.
When the page flags are updated with section, node and zone information, a
check are made to ensure the values can be retrieved correctly. Finally we
confirm that pfn_to_page and page_to_pfn are the correct inverse functions.
[akpm@linux-foundation.org: fix printk warnings]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index a7ee05253294..7a4a2885dc8e 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -78,6 +78,10 @@ do { \ } \ } while (0) +extern void mminit_verify_pageflags_layout(void); +extern void mminit_verify_page_links(struct page *page, + enum zone_type zone, unsigned long nid, unsigned long pfn); + #else static inline void mminit_dprintk(enum mminit_level level, @@ -85,5 +89,13 @@ static inline void mminit_dprintk(enum mminit_level level, { } +static inline void mminit_verify_pageflags_layout(void) +{ +} + +static inline void mminit_verify_page_links(struct page *page, + enum zone_type zone, unsigned long nid, unsigned long pfn) +{ +} #endif /* CONFIG_DEBUG_MEMORY_INIT */ #endif |