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SLES10 Fixes (part 6)

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- Prior to 2.6.17 there were no *_pgdat helper functions in mm/mmzone.c.
  Instead for_each_zone() operated directly on pgdat_list which may or
  may not have been exported depending on how your kernel was compiled.
  Now new configure checks determine if you have the helpers or not, and
  if the needed symbols are exported.  If they are not exported then they
  are dynamically aquired at runtime by kallsyms_lookup_name().
This commit is contained in:
Brian Behlendorf
2009-05-20 14:23:13 -07:00
parent 3731931529
commit 5232d256b4
6 changed files with 157 additions and 23 deletions
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include/sys/vmsystm.h
+19 -11
View File
@@ -93,26 +93,34 @@ extern get_vmalloc_info_t get_vmalloc_info_fn;
#endif /* CONFIG_MMU */
#endif /* HAVE_GET_VMALLOC_INFO */
#ifdef HAVE_PGDAT_HELPERS
/* Source linux/mm/mmzone.c */
#ifndef HAVE_FIRST_ONLINE_PGDAT
# ifndef HAVE_FIRST_ONLINE_PGDAT
typedef struct pglist_data *(*first_online_pgdat_t)(void);
extern first_online_pgdat_t first_online_pgdat_fn;
#define first_online_pgdat() first_online_pgdat_fn()
#endif /* HAVE_FIRST_ONLINE_PGDAT */
# define first_online_pgdat() first_online_pgdat_fn()
# endif /* HAVE_FIRST_ONLINE_PGDAT */
/* Source linux/mm/mmzone.c */
#ifndef HAVE_NEXT_ONLINE_PGDAT
# ifndef HAVE_NEXT_ONLINE_PGDAT
typedef struct pglist_data *(*next_online_pgdat_t)(struct pglist_data *);
extern next_online_pgdat_t next_online_pgdat_fn;
#define next_online_pgdat(pgd) next_online_pgdat_fn(pgd)
#endif /* HAVE_NEXT_ONLINE_PGDAT */
# define next_online_pgdat(pgd) next_online_pgdat_fn(pgd)
# endif /* HAVE_NEXT_ONLINE_PGDAT */
/* Source linux/mm/mmzone.c */
#ifndef HAVE_NEXT_ZONE
# ifndef HAVE_NEXT_ZONE
typedef struct zone *(*next_zone_t)(struct zone *);
extern next_zone_t next_zone_fn;
#define next_zone(zone) next_zone_fn(zone)
#endif /* HAVE_NEXT_ZONE */
# define next_zone(zone) next_zone_fn(zone)
# endif /* HAVE_NEXT_ZONE */
#else /* HAVE_PGDAT_HELPERS */
# ifndef HAVE_PGDAT_LIST
extern struct pglist_data *pgdat_list_addr;
# define pgdat_list pgdat_list_addr
# endif /* HAVE_PGDAT_LIST */
#endif /* HAVE_PGDAT_HELPERS */
/* Source linux/mm/vmstat.c */
#ifndef HAVE_ZONE_STAT_ITEM_FIA