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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
Download Patch File Download Diff File Expand all files Collapse all files
module/spl/spl-kmem.c
+35 -12
View File
@@ -84,20 +84,30 @@ get_vmalloc_info_t get_vmalloc_info_fn = SYMBOL_POISON;
EXPORT_SYMBOL(get_vmalloc_info_fn);
#endif /* HAVE_GET_VMALLOC_INFO */
#ifndef HAVE_FIRST_ONLINE_PGDAT
#ifdef HAVE_PGDAT_HELPERS
# ifndef HAVE_FIRST_ONLINE_PGDAT
first_online_pgdat_t first_online_pgdat_fn = SYMBOL_POISON;
EXPORT_SYMBOL(first_online_pgdat_fn);
#endif /* HAVE_FIRST_ONLINE_PGDAT */
# endif /* HAVE_FIRST_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ONLINE_PGDAT
# ifndef HAVE_NEXT_ONLINE_PGDAT
next_online_pgdat_t next_online_pgdat_fn = SYMBOL_POISON;
EXPORT_SYMBOL(next_online_pgdat_fn);
#endif /* HAVE_NEXT_ONLINE_PGDAT */
# endif /* HAVE_NEXT_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ZONE
# ifndef HAVE_NEXT_ZONE
next_zone_t next_zone_fn = SYMBOL_POISON;
EXPORT_SYMBOL(next_zone_fn);
#endif /* HAVE_NEXT_ZONE */
# endif /* HAVE_NEXT_ZONE */
#else /* HAVE_PGDAT_HELPERS */
# ifndef HAVE_PGDAT_LIST
struct pglist_data *pgdat_list_addr = SYMBOL_POISON;
EXPORT_SYMBOL(pgdat_list_addr);
# endif /* HAVE_PGDAT_LIST */
#endif /* HAVE_PGDAT_HELPERS */
#ifndef HAVE_ZONE_STAT_ITEM_FIA
# ifndef HAVE_GET_ZONE_COUNTS
@@ -1806,32 +1816,45 @@ spl_kmem_init_kallsyms_lookup(void)
}
#endif /* HAVE_GET_VMALLOC_INFO */
#ifndef HAVE_FIRST_ONLINE_PGDAT
#ifdef HAVE_PGDAT_HELPERS
# ifndef HAVE_FIRST_ONLINE_PGDAT
first_online_pgdat_fn = (first_online_pgdat_t)
spl_kallsyms_lookup_name("first_online_pgdat");
if (!first_online_pgdat_fn) {
printk(KERN_ERR "Error: Unknown symbol first_online_pgdat\n");
return -EFAULT;
}
#endif /* HAVE_FIRST_ONLINE_PGDAT */
# endif /* HAVE_FIRST_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ONLINE_PGDAT
# ifndef HAVE_NEXT_ONLINE_PGDAT
next_online_pgdat_fn = (next_online_pgdat_t)
spl_kallsyms_lookup_name("next_online_pgdat");
if (!next_online_pgdat_fn) {
printk(KERN_ERR "Error: Unknown symbol next_online_pgdat\n");
return -EFAULT;
}
#endif /* HAVE_NEXT_ONLINE_PGDAT */
# endif /* HAVE_NEXT_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ZONE
# ifndef HAVE_NEXT_ZONE
next_zone_fn = (next_zone_t)
spl_kallsyms_lookup_name("next_zone");
if (!next_zone_fn) {
printk(KERN_ERR "Error: Unknown symbol next_zone\n");
return -EFAULT;
}
#endif /* HAVE_NEXT_ZONE */
# endif /* HAVE_NEXT_ZONE */
#else /* HAVE_PGDAT_HELPERS */
# ifndef HAVE_PGDAT_LIST
pgdat_list_addr = (struct pglist_data *)
spl_kallsyms_lookup_name("pgdat_list");
if (!pgdat_list_addr) {
printk(KERN_ERR "Error: Unknown symbol pgdat_list\n");
return -EFAULT;
}
# endif /* HAVE_PGDAT_LIST */
#endif /* HAVE_PGDAT_HELPERS */
#ifndef HAVE_ZONE_STAT_ITEM_FIA
# ifndef HAVE_GET_ZONE_COUNTS