diff options
Diffstat (limited to 'module/spl/spl-kmem.c')
| -rw-r--r-- | module/spl/spl-kmem.c | 79 |
1 files changed, 55 insertions, 24 deletions
diff --git a/module/spl/spl-kmem.c b/module/spl/spl-kmem.c index 4edd3d7e1..b1124f706 100644 --- a/module/spl/spl-kmem.c +++ b/module/spl/spl-kmem.c @@ -109,49 +109,82 @@ EXPORT_SYMBOL(pgdat_list_addr); #endif /* HAVE_PGDAT_HELPERS */ -#ifndef HAVE_ZONE_STAT_ITEM_FIA +#ifdef NEED_GET_ZONE_COUNTS # ifndef HAVE_GET_ZONE_COUNTS 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) +spl_global_page_state(spl_zone_stat_item_t item) { unsigned long active; unsigned long inactive; unsigned long free; - if (item == NR_FREE_PAGES) { - get_zone_counts(&active, &inactive, &free); - return free; + get_zone_counts(&active, &inactive, &free); + switch (item) { + case SPL_NR_FREE_PAGES: return free; + case SPL_NR_INACTIVE: return inactive; + case SPL_NR_ACTIVE: return active; + default: ASSERT(0); /* Unsupported */ } - if (item == NR_INACTIVE) { - get_zone_counts(&active, &inactive, &free); - return inactive; - } - - if (item == NR_ACTIVE) { - get_zone_counts(&active, &inactive, &free); - return active; + return 0; +} +#else +# ifdef HAVE_GLOBAL_PAGE_STATE +unsigned long +spl_global_page_state(spl_zone_stat_item_t item) +{ + unsigned long pages = 0; + + switch (item) { + case SPL_NR_FREE_PAGES: +# ifdef HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES + pages += global_page_state(NR_FREE_PAGES); +# endif + break; + case SPL_NR_INACTIVE: +# ifdef HAVE_ZONE_STAT_ITEM_NR_INACTIVE + pages += global_page_state(NR_INACTIVE); +# endif +# ifdef HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON + pages += global_page_state(NR_INACTIVE_ANON); +# endif +# ifdef HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE + pages += global_page_state(NR_INACTIVE_FILE); +# endif + break; + case SPL_NR_ACTIVE: +# ifdef HAVE_ZONE_STAT_ITEM_NR_ACTIVE + pages += global_page_state(NR_ACTIVE); +# endif +# ifdef HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON + pages += global_page_state(NR_ACTIVE_ANON); +# endif +# ifdef HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE + pages += global_page_state(NR_ACTIVE_FILE); +# endif + break; + default: + ASSERT(0); /* Unsupported */ } -# ifdef HAVE_GLOBAL_PAGE_STATE - return global_page_state((enum zone_stat_item)item); + return pages; +} # else - return 0; /* Unsupported */ +# error "Both global_page_state() and get_zone_counts() unavailable" # endif /* HAVE_GLOBAL_PAGE_STATE */ -} +#endif /* NEED_GET_ZONE_COUNTS */ EXPORT_SYMBOL(spl_global_page_state); -#endif /* HAVE_ZONE_STAT_ITEM_FIA */ pgcnt_t spl_kmem_availrmem(void) { /* The amount of easily available memory */ - return (spl_global_page_state(NR_FREE_PAGES) + - spl_global_page_state(NR_INACTIVE)); + return (spl_global_page_state(SPL_NR_FREE_PAGES) + + spl_global_page_state(SPL_NR_INACTIVE)); } EXPORT_SYMBOL(spl_kmem_availrmem); @@ -1856,16 +1889,14 @@ spl_kmem_init_kallsyms_lookup(void) # endif /* HAVE_PGDAT_LIST */ #endif /* HAVE_PGDAT_HELPERS */ -#ifndef HAVE_ZONE_STAT_ITEM_FIA -# ifndef HAVE_GET_ZONE_COUNTS +#if defined(NEED_GET_ZONE_COUNTS) && !defined(HAVE_GET_ZONE_COUNTS) get_zone_counts_fn = (get_zone_counts_t) spl_kallsyms_lookup_name("get_zone_counts"); if (!get_zone_counts_fn) { printk(KERN_ERR "Error: Unknown symbol get_zone_counts\n"); return -EFAULT; } -# endif /* HAVE_GET_ZONE_COUNTS */ -#endif /* HAVE_ZONE_STAT_ITEM_FIA */ +#endif /* NEED_GET_ZONE_COUNTS && !HAVE_GET_ZONE_COUNTS */ /* * It is now safe to initialize the global tunings which rely on |