SPL_AC_MUTEX_OWNER
SPL_AC_MUTEX_OWNER_TASK_STRUCT
SPL_AC_KALLSYMS_LOOKUP_NAME
- SPL_AC_PGDAT_HELPERS
- SPL_AC_FIRST_ONLINE_PGDAT
- SPL_AC_NEXT_ONLINE_PGDAT
- SPL_AC_NEXT_ZONE
- SPL_AC_PGDAT_LIST
- SPL_AC_GLOBAL_PAGE_STATE
- SPL_AC_ZONE_STAT_ITEM_FREE
- SPL_AC_ZONE_STAT_ITEM_INACTIVE
- SPL_AC_ZONE_STAT_ITEM_ACTIVE
- SPL_AC_GET_ZONE_COUNTS
SPL_AC_USER_PATH_DIR
SPL_AC_SET_FS_PWD
SPL_AC_SET_FS_PWD_WITH_CONST
])
])
-dnl #
-dnl # 2.6.17 API change
-dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and
-dnl # next_zone() are introduced to simplify for_each_zone(). These symbols
-dnl # were exported in 2.6.17 for use by modules which was consistent with
-dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19
-dnl # the symbols were exported as 'unused', and by 2.6.20 they exports
-dnl # were dropped entirely leaving modules no way to directly iterate over
-dnl # the zone list. Because we need access to the zone helpers we check
-dnl # if the kernel contains the old or new implementation. Then we check
-dnl # to see if the symbols we need for each version are available. If they
-dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name().
-dnl #
-AC_DEFUN([SPL_AC_PGDAT_HELPERS], [
- AC_MSG_CHECKING([whether symbol *_pgdat exist])
- grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null
- rc=$?
- if test $rc -eq 0; then
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available])
- else
- AC_MSG_RESULT([no])
- fi
-])
-
-dnl #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-dnl # custom kernel with the *-spl-export-symbols.patch which will export
-dnl # these symbols for use. If your already rolling a custom kernel for
-dnl # your environment this is recommended.
-dnl #
-AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT],
- [AC_MSG_CHECKING([whether first_online_pgdat() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/mmzone.h>
- ], [
- first_online_pgdat();
- ], [first_online_pgdat], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1,
- [first_online_pgdat() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-dnl # custom kernel with the *-spl-export-symbols.patch which will export
-dnl # these symbols for use. If your already rolling a custom kernel for
-dnl # your environment this is recommended.
-dnl #
-AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT],
- [AC_MSG_CHECKING([whether next_online_pgdat() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/mmzone.h>
- ], [
- next_online_pgdat(NULL);
- ], [next_online_pgdat], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1,
- [next_online_pgdat() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-dnl # custom kernel with the *-spl-export-symbols.patch which will export
-dnl # these symbols for use. If your already rolling a custom kernel for
-dnl # your environment this is recommended.
-dnl #
-AC_DEFUN([SPL_AC_NEXT_ZONE],
- [AC_MSG_CHECKING([whether next_zone() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/mmzone.h>
- ], [
- next_zone(NULL);
- ], [next_zone], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NEXT_ZONE, 1, [next_zone() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.17 API change,
-dnl # See SPL_AC_PGDAT_HELPERS for details.
-dnl #
-AC_DEFUN([SPL_AC_PGDAT_LIST],
- [AC_MSG_CHECKING([whether pgdat_list is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/topology.h>
- pg_data_t *tmp = pgdat_list;
- ], [], [pgdat_list], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_PGDAT_LIST, 1, [pgdat_list is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.18 API change,
-dnl # First introduced global_page_state() support as an inline.
-dnl #
-AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
- AC_MSG_CHECKING([whether global_page_state() is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- unsigned long state __attribute__ ((unused));
- state = global_page_state(0);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
- [global_page_state() is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include a free page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
-dnl #
-dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which
-dnl # is 2.6.30 as of when this was written.
-dnl #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [
- AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_FREE_PAGES;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1,
- [Page state NR_FREE_PAGES is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include an inactive page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
-dnl #
-dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both
-dnl # anonymous and file inactive pages. As of 2.6.28 it was split in
-dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE.
-dnl #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [
- AC_MSG_CHECKING([whether page state NR_INACTIVE is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1,
- [Page state NR_INACTIVE is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-
- AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE_ANON;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1,
- [Page state NR_INACTIVE_ANON is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-
- AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE_FILE;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1,
- [Page state NR_INACTIVE_FILE is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include an active page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
-dnl #
-dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both
-dnl # anonymous and file active pages. As of 2.6.28 it was split in
-dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE.
-dnl #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [
- AC_MSG_CHECKING([whether page state NR_ACTIVE is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1,
- [Page state NR_ACTIVE is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-
- AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE_ANON;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1,
- [Page state NR_ACTIVE_ANON is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-
- AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE_FILE;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1,
- [Page state NR_ACTIVE_FILE is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Proposed API change for legacy kernels.
-dnl # This symbol is not available in older kernels. For kernels post
-dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active
-dnl # page state information. This symbol is only used in legacy kernels
-dnl # any only as a last resort.
-dnl
-AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
- AC_MSG_CHECKING([whether symbol get_zone_counts is needed])
- SPL_LINUX_TRY_COMPILE([
- ],[
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES)
- #error "global_page_state needs NR_FREE_PAGES"
- #endif
-
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE)
- #error "global_page_state needs NR_ACTIVE*"
- #endif
-
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE)
- #error "global_page_state needs NR_INACTIVE*"
- #endif
- ],[
- AC_MSG_RESULT(no)
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(NEED_GET_ZONE_COUNTS, 1,
- [get_zone_counts() is needed])
-
- AC_MSG_CHECKING([whether get_zone_counts() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/mmzone.h>
- ], [
- get_zone_counts(NULL, NULL, NULL);
- ], [get_zone_counts], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
- [get_zone_counts() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
- ])
-])
-
dnl #
dnl # 2.6.27 API change,
dnl # The user_path_dir() replaces __user_walk()
#include <linux/mm.h>
#include <linux/fs.h>
-/*
- * Linux 2.6.31 API Change.
- * Individual pages_{min,low,high} moved in to watermark array.
- */
-#ifndef min_wmark_pages
-#define min_wmark_pages(z) (z->pages_min)
-#endif
-
-#ifndef low_wmark_pages
-#define low_wmark_pages(z) (z->pages_low)
-#endif
-
-#ifndef high_wmark_pages
-#define high_wmark_pages(z) (z->pages_high)
-#endif
-
#if !defined(HAVE_SHRINK_CONTROL_STRUCT)
struct shrink_control {
gfp_t gfp_mask;
#include <sys/types.h>
#include <asm/uaccess.h>
-/* These values are loosely coupled with the VM page reclaim.
- * Linux uses its own heuristics to trigger page reclamation, and
- * because those interface are difficult to interface with. These
- * values should only be considered as a rough guide to the system
- * memory state and not as direct evidence that page reclamation.
- * is or is not currently in progress.
- */
-#define membar_producer() smp_wmb()
-
-#define physmem totalram_pages
-#define freemem nr_free_pages()
-#define availrmem spl_kmem_availrmem()
-
-extern pgcnt_t minfree; /* Sum of zone->pages_min */
-extern pgcnt_t desfree; /* Sum of zone->pages_low */
-extern pgcnt_t lotsfree; /* Sum of zone->pages_high */
-extern pgcnt_t needfree; /* Always 0 unused in new Solaris */
-extern pgcnt_t swapfs_minfree; /* Solaris default value */
-extern pgcnt_t swapfs_reserve; /* Solaris default value */
+#define membar_producer() smp_wmb()
+#define physmem totalram_pages
+#define freemem nr_free_pages()
extern vmem_t *heap_arena; /* primary kernel heap arena */
extern vmem_t *zio_alloc_arena; /* arena for zio caches */
extern vmem_t *zio_arena; /* arena for allocating zio memory */
-extern pgcnt_t spl_kmem_availrmem(void);
extern size_t vmem_size(vmem_t *vmp, int typemask);
#define VMEM_ALLOC 0x01
#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
#endif
-#ifdef HAVE_PGDAT_HELPERS
-/* Source linux/mm/mmzone.c */
-# 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 */
-
-# 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 */
-
-# 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 */
-
-#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 */
-#if defined(NEED_GET_ZONE_COUNTS) && !defined(HAVE_GET_ZONE_COUNTS)
-typedef void (*get_zone_counts_t)(unsigned long *, unsigned long *,
- unsigned long *);
-extern get_zone_counts_t get_zone_counts_fn;
-# define get_zone_counts(a,i,f) get_zone_counts_fn(a,i,f)
-#endif /* NEED_GET_ZONE_COUNTS && !HAVE_GET_ZONE_COUNTS */
-
-typedef enum spl_zone_stat_item {
- SPL_NR_FREE_PAGES,
- SPL_NR_INACTIVE,
- SPL_NR_ACTIVE,
- SPL_NR_ZONE_STAT_ITEMS
-} spl_zone_stat_item_t;
-
-extern unsigned long spl_global_page_state(spl_zone_stat_item_t);
-
-#define xcopyin(from, to, size) copy_from_user(to, from, size)
-#define xcopyout(from, to, size) copy_to_user(to, from, size)
+#define xcopyin(from, to, size) copy_from_user(to, from, size)
+#define xcopyout(from, to, size) copy_to_user(to, from, size)
static __inline__ int
copyin(const void *from, void *to, size_t len)
MODULE_PARM_DESC(spl_kmem_cache_kmem_limit,
"Objects less than N bytes use the kmalloc");
-/*
- * The minimum amount of memory measured in pages to be free at all
- * times on the system. This is similar to Linux's zone->pages_min
- * multiplied by the number of zones and is sized based on that.
- */
-pgcnt_t minfree = 0;
-EXPORT_SYMBOL(minfree);
-
-/*
- * The desired amount of memory measured in pages to be free at all
- * times on the system. This is similar to Linux's zone->pages_low
- * multiplied by the number of zones and is sized based on that.
- * Assuming all zones are being used roughly equally, when we drop
- * below this threshold asynchronous page reclamation is triggered.
- */
-pgcnt_t desfree = 0;
-EXPORT_SYMBOL(desfree);
-
-/*
- * When above this amount of memory measures in pages the system is
- * determined to have enough free memory. This is similar to Linux's
- * zone->pages_high multiplied by the number of zones and is sized based
- * on that. Assuming all zones are being used roughly equally, when
- * asynchronous page reclamation reaches this threshold it stops.
- */
-pgcnt_t lotsfree = 0;
-EXPORT_SYMBOL(lotsfree);
-
-/* Unused always 0 in this implementation */
-pgcnt_t needfree = 0;
-EXPORT_SYMBOL(needfree);
-
-pgcnt_t swapfs_minfree = 0;
-EXPORT_SYMBOL(swapfs_minfree);
-
-pgcnt_t swapfs_reserve = 0;
-EXPORT_SYMBOL(swapfs_reserve);
-
vmem_t *heap_arena = NULL;
EXPORT_SYMBOL(heap_arena);
vmem_t *zio_arena = NULL;
EXPORT_SYMBOL(zio_arena);
-#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 */
-
-# 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 */
-
-# ifndef HAVE_NEXT_ZONE
-next_zone_t next_zone_fn = SYMBOL_POISON;
-EXPORT_SYMBOL(next_zone_fn);
-# 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 */
-
-#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(spl_zone_stat_item_t item)
-{
- unsigned long active;
- unsigned long inactive;
- unsigned long 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 */
- }
-
- 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 */
- }
-
- return pages;
-}
-# else
-# 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);
-
#ifndef HAVE_SHRINK_DCACHE_MEMORY
shrink_dcache_memory_t shrink_dcache_memory_fn = SYMBOL_POISON;
EXPORT_SYMBOL(shrink_dcache_memory_fn);
EXPORT_SYMBOL(shrink_icache_memory_fn);
#endif /* HAVE_SHRINK_ICACHE_MEMORY */
-pgcnt_t
-spl_kmem_availrmem(void)
-{
- /* The amount of easily available memory */
- return (spl_global_page_state(SPL_NR_FREE_PAGES) +
- spl_global_page_state(SPL_NR_INACTIVE));
-}
-EXPORT_SYMBOL(spl_kmem_availrmem);
-
size_t
vmem_size(vmem_t *vmp, int typemask)
{
#define spl_kmem_fini_tracking(list, lock)
#endif /* DEBUG_KMEM && DEBUG_KMEM_TRACKING */
-static void
-spl_kmem_init_globals(void)
-{
- struct zone *zone;
-
- /* For now all zones are includes, it may be wise to restrict
- * this to normal and highmem zones if we see problems. */
- for_each_zone(zone) {
-
- if (!populated_zone(zone))
- continue;
-
- minfree += min_wmark_pages(zone);
- desfree += low_wmark_pages(zone);
- lotsfree += high_wmark_pages(zone);
- }
-
- /* Solaris default values */
- swapfs_minfree = MAX(2*1024*1024 >> PAGE_SHIFT, physmem >> 3);
- swapfs_reserve = MIN(4*1024*1024 >> PAGE_SHIFT, physmem >> 4);
-}
-
/*
* Called at module init when it is safe to use spl_kallsyms_lookup_name()
*/
int
spl_kmem_init_kallsyms_lookup(void)
{
-#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 */
-
-# 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 */
-
-# 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 */
-
-#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 */
-
-#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 /* NEED_GET_ZONE_COUNTS && !HAVE_GET_ZONE_COUNTS */
-
- /*
- * It is now safe to initialize the global tunings which rely on
- * the use of the for_each_zone() macro. This macro in turns
- * depends on the *_pgdat symbols which are now available.
- */
- spl_kmem_init_globals();
-
#ifndef HAVE_SHRINK_DCACHE_MEMORY
/* When shrink_dcache_memory_fn == NULL support is disabled */
shrink_dcache_memory_fn = (shrink_dcache_memory_t)
}
#endif /* HAVE_KALLSYMS_LOOKUP_NAME */
-SPL_PROC_HANDLER(proc_doavailrmem)
-{
- int len, rc = 0;
- char str[32];
- SENTRY;
-
- if (write) {
- *ppos += *lenp;
- } else {
- len = snprintf(str, sizeof(str), "%lu",
- (unsigned long)availrmem);
- if (*ppos >= len)
- rc = 0;
- else
- rc = proc_copyout_string(buffer,*lenp,str+*ppos,"\n");
-
- if (rc >= 0) {
- *lenp = rc;
- *ppos += rc;
- }
- }
-
- SRETURN(rc);
-}
-
-SPL_PROC_HANDLER(proc_dofreemem)
-{
- int len, rc = 0;
- char str[32];
- SENTRY;
-
- if (write) {
- *ppos += *lenp;
- } else {
- len = snprintf(str, sizeof(str), "%lu", (unsigned long)freemem);
- if (*ppos >= len)
- rc = 0;
- else
- rc = proc_copyout_string(buffer,*lenp,str+*ppos,"\n");
-
- if (rc >= 0) {
- *lenp = rc;
- *ppos += rc;
- }
- }
-
- SRETURN(rc);
-}
-
#ifdef DEBUG_KMEM
static void
slab_seq_show_headers(struct seq_file *f)
};
#endif /* DEBUG_LOG */
-static struct ctl_table spl_vm_table[] = {
- {
- .procname = "minfree",
- .data = &minfree,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "desfree",
- .data = &desfree,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "lotsfree",
- .data = &lotsfree,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "needfree",
- .data = &needfree,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "swapfs_minfree",
- .data = &swapfs_minfree,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "swapfs_reserve",
- .data = &swapfs_reserve,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .procname = "availrmem",
- .mode = 0444,
- .proc_handler = &proc_doavailrmem,
- },
- {
- .procname = "freemem",
- .data = (void *)2,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = &proc_dofreemem,
- },
- {
- .procname = "physmem",
- .data = &physmem,
- .maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = &proc_dointvec,
- },
- {0},
-};
-
#ifdef DEBUG_KMEM
static struct ctl_table spl_kmem_table[] = {
{
.child = spl_debug_table,
},
#endif
- {
- .procname = "vm",
- .mode = 0555,
- .child = spl_vm_table,
- },
#ifdef DEBUG_KMEM
{
.procname = "kmem",
for (alloc = 1; alloc <= 1024; alloc *= 2) {
- /* Skip tests which exceed available memory. We
- * leverage availrmem here for some extra testing */
- if (size * alloc * SPLAT_KMEM_THREADS > availrmem / 2)
+ /* Skip tests which exceed 1/2 of physical memory. */
+ if (size * alloc * SPLAT_KMEM_THREADS > physmem / 2)
continue;
rc = splat_kmem_cache_thread_test(file, arg,
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