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SLES10 Fixes (part 2):

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- Configure check, the div64_64() function was renamed to
  div64_u64() as of 2.6.26.
- Configure check, the global_page_state() fuction was introduced
  in 2.6.18 kernels.  The earlier 2.6.16 based SLES10 must not try
  and use it, thankfully get_zone_counts() is still available.
- To simplify debugging poison all symbols aquired dynamically
  using spl_kallsyms_lookup_name() with SYMBOL_POISON.
- Add console messages when the user mode helpers fail.
- spl_kmem_init_globals() use bit shifts instead of division.
- When the monotonic clock is unavailable __gethrtime() must perform
  the HZ division as an 'unsigned long long' because the SPL only
  implements __udivdi3(), and not __divdi3() for 'long long' division
  on 32-bit arches.
This commit is contained in:
Brian Behlendorf
2009-05-20 10:08:37 -07:00
parent bf338d8d09
commit 96dded3844
11 changed files with 217 additions and 94 deletions
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module/spl/spl-kmem.c
+12 -12
View File
@@ -80,29 +80,30 @@ vmem_t *zio_arena = NULL;
EXPORT_SYMBOL(zio_arena);
#ifndef HAVE_GET_VMALLOC_INFO
get_vmalloc_info_t get_vmalloc_info_fn = NULL;
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
first_online_pgdat_t first_online_pgdat_fn = NULL;
first_online_pgdat_t first_online_pgdat_fn = SYMBOL_POISON;
EXPORT_SYMBOL(first_online_pgdat_fn);
#endif /* HAVE_FIRST_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ONLINE_PGDAT
next_online_pgdat_t next_online_pgdat_fn = NULL;
next_online_pgdat_t next_online_pgdat_fn = SYMBOL_POISON;
EXPORT_SYMBOL(next_online_pgdat_fn);
#endif /* HAVE_NEXT_ONLINE_PGDAT */
#ifndef HAVE_NEXT_ZONE
next_zone_t next_zone_fn = NULL;
next_zone_t next_zone_fn = SYMBOL_POISON;
EXPORT_SYMBOL(next_zone_fn);
#endif /* HAVE_NEXT_ZONE */
#ifndef HAVE_ZONE_STAT_ITEM_FIA
# ifndef HAVE_GET_ZONE_COUNTS
get_zone_counts_t get_zone_counts_fn = NULL;
get_zone_counts_t get_zone_counts_fn = SYMBOL_POISON;
EXPORT_SYMBOL(get_zone_counts_fn);
# endif /* HAVE_GET_ZONE_COUNTS */
unsigned long
spl_global_page_state(int item)
@@ -126,12 +127,13 @@ spl_global_page_state(int item)
return active;
}
# ifdef HAVE_GLOBAL_PAGE_STATE
return global_page_state((enum zone_stat_item)item);
# else
return 0; /* Unsupported */
# endif /* HAVE_GLOBAL_PAGE_STATE */
}
EXPORT_SYMBOL(spl_global_page_state);
# else
# error "HAVE_ZONE_STAT_ITEM_FIA and HAVE_GET_ZONE_COUNTS unavailable"
# endif /* HAVE_GET_ZONE_COUNTS */
#endif /* HAVE_ZONE_STAT_ITEM_FIA */
pgcnt_t
@@ -1785,8 +1787,8 @@ spl_kmem_init_globals(void)
}
/* Solaris default values */
swapfs_minfree = MAX(2*1024*1024 / PAGE_SIZE, physmem / 8);
swapfs_reserve = MIN(4*1024*1024 / PAGE_SIZE, physmem / 16);
swapfs_minfree = MAX(2*1024*1024 >> PAGE_SHIFT, physmem >> 3);
swapfs_reserve = MIN(4*1024*1024 >> PAGE_SHIFT, physmem >> 4);
}
/*
@@ -1839,8 +1841,6 @@ spl_kmem_init_kallsyms_lookup(void)
printk(KERN_ERR "Error: Unknown symbol get_zone_counts\n");
return -EFAULT;
}
# else
# error "HAVE_ZONE_STAT_ITEM_FIA and HAVE_GET_ZONE_COUNTS unavailable"
# endif /* HAVE_GET_ZONE_COUNTS */
#endif /* HAVE_ZONE_STAT_ITEM_FIA */