| version 1.101, 2005/06/18 01:34:03 |
version 1.101.2.1, 2006/06/21 15:09:38 |
| Line 70 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| Line 70 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| */ |
*/ |
| |
|
| /* List of all pools */ |
/* List of all pools */ |
| TAILQ_HEAD(,pool) pool_head = TAILQ_HEAD_INITIALIZER(pool_head); |
LIST_HEAD(,pool) pool_head = LIST_HEAD_INITIALIZER(pool_head); |
| |
|
| /* Private pool for page header structures */ |
/* Private pool for page header structures */ |
| #define PHPOOL_MAX 8 |
#define PHPOOL_MAX 8 |
| Line 82 static struct pool phpool[PHPOOL_MAX]; |
|
| Line 82 static struct pool phpool[PHPOOL_MAX]; |
|
| static struct pool psppool; |
static struct pool psppool; |
| #endif |
#endif |
| |
|
| |
static SLIST_HEAD(, pool_allocator) pa_deferinitq = |
| |
SLIST_HEAD_INITIALIZER(pa_deferinitq); |
| |
|
| static void *pool_page_alloc_meta(struct pool *, int); |
static void *pool_page_alloc_meta(struct pool *, int); |
| static void pool_page_free_meta(struct pool *, void *); |
static void pool_page_free_meta(struct pool *, void *); |
| |
|
| /* allocator for pool metadata */ |
/* allocator for pool metadata */ |
| static struct pool_allocator pool_allocator_meta = { |
static struct pool_allocator pool_allocator_meta = { |
| pool_page_alloc_meta, pool_page_free_meta |
pool_page_alloc_meta, pool_page_free_meta, |
| |
.pa_backingmapptr = &kmem_map, |
| }; |
}; |
| |
|
| /* # of seconds to retain page after last use */ |
/* # of seconds to retain page after last use */ |
| Line 112 struct pool_item_header { |
|
| Line 116 struct pool_item_header { |
|
| union { |
union { |
| /* !PR_NOTOUCH */ |
/* !PR_NOTOUCH */ |
| struct { |
struct { |
| TAILQ_HEAD(, pool_item) |
LIST_HEAD(, pool_item) |
| phu_itemlist; /* chunk list for this page */ |
phu_itemlist; /* chunk list for this page */ |
| } phu_normal; |
} phu_normal; |
| /* PR_NOTOUCH */ |
/* PR_NOTOUCH */ |
| Line 139 struct pool_item { |
|
| Line 143 struct pool_item { |
|
| #endif |
#endif |
| #define PI_MAGIC 0xdeadbeefU |
#define PI_MAGIC 0xdeadbeefU |
| /* Other entries use only this list entry */ |
/* Other entries use only this list entry */ |
| TAILQ_ENTRY(pool_item) pi_list; |
LIST_ENTRY(pool_item) pi_list; |
| }; |
}; |
| |
|
| #define POOL_NEEDS_CATCHUP(pp) \ |
#define POOL_NEEDS_CATCHUP(pp) \ |
| Line 174 struct pool_item { |
|
| Line 178 struct pool_item { |
|
| /* The cache group pool. */ |
/* The cache group pool. */ |
| static struct pool pcgpool; |
static struct pool pcgpool; |
| |
|
| static void pool_cache_reclaim(struct pool_cache *, struct pool_pagelist *); |
static void pool_cache_reclaim(struct pool_cache *, struct pool_pagelist *, |
| |
struct pool_cache_grouplist *); |
| |
static void pcg_grouplist_free(struct pool_cache_grouplist *); |
| |
|
| static int pool_catchup(struct pool *); |
static int pool_catchup(struct pool *); |
| static void pool_prime_page(struct pool *, caddr_t, |
static void pool_prime_page(struct pool *, caddr_t, |
| struct pool_item_header *); |
struct pool_item_header *); |
| static void pool_update_curpage(struct pool *); |
static void pool_update_curpage(struct pool *); |
| |
|
| void *pool_allocator_alloc(struct pool *, int); |
static int pool_grow(struct pool *, int); |
| void pool_allocator_free(struct pool *, void *); |
static void *pool_allocator_alloc(struct pool *, int); |
| |
static void pool_allocator_free(struct pool *, void *); |
| |
|
| static void pool_print_pagelist(struct pool *, struct pool_pagelist *, |
static void pool_print_pagelist(struct pool *, struct pool_pagelist *, |
| void (*)(const char *, ...)); |
void (*)(const char *, ...)); |
| Line 212 struct pool_log { |
|
| Line 219 struct pool_log { |
|
| |
|
| int pool_logsize = POOL_LOGSIZE; |
int pool_logsize = POOL_LOGSIZE; |
| |
|
| static __inline void |
static inline void |
| pr_log(struct pool *pp, void *v, int action, const char *file, long line) |
pr_log(struct pool *pp, void *v, int action, const char *file, long line) |
| { |
{ |
| int n = pp->pr_curlogentry; |
int n = pp->pr_curlogentry; |
| Line 265 pr_printlog(struct pool *pp, struct pool |
|
| Line 272 pr_printlog(struct pool *pp, struct pool |
|
| } |
} |
| } |
} |
| |
|
| static __inline void |
static inline void |
| pr_enter(struct pool *pp, const char *file, long line) |
pr_enter(struct pool *pp, const char *file, long line) |
| { |
{ |
| |
|
| Line 281 pr_enter(struct pool *pp, const char *fi |
|
| Line 288 pr_enter(struct pool *pp, const char *fi |
|
| pp->pr_entered_line = line; |
pp->pr_entered_line = line; |
| } |
} |
| |
|
| static __inline void |
static inline void |
| pr_leave(struct pool *pp) |
pr_leave(struct pool *pp) |
| { |
{ |
| |
|
| Line 294 pr_leave(struct pool *pp) |
|
| Line 301 pr_leave(struct pool *pp) |
|
| pp->pr_entered_line = 0; |
pp->pr_entered_line = 0; |
| } |
} |
| |
|
| static __inline void |
static inline void |
| pr_enter_check(struct pool *pp, void (*pr)(const char *, ...)) |
pr_enter_check(struct pool *pp, void (*pr)(const char *, ...)) |
| { |
{ |
| |
|
| Line 310 pr_enter_check(struct pool *pp, void (*p |
|
| Line 317 pr_enter_check(struct pool *pp, void (*p |
|
| #define pr_enter_check(pp, pr) |
#define pr_enter_check(pp, pr) |
| #endif /* POOL_DIAGNOSTIC */ |
#endif /* POOL_DIAGNOSTIC */ |
| |
|
| static __inline int |
static inline int |
| pr_item_notouch_index(const struct pool *pp, const struct pool_item_header *ph, |
pr_item_notouch_index(const struct pool *pp, const struct pool_item_header *ph, |
| const void *v) |
const void *v) |
| { |
{ |
| Line 329 pr_item_notouch_index(const struct pool |
|
| Line 336 pr_item_notouch_index(const struct pool |
|
| #define PR_INDEX_USED ((pool_item_freelist_t)-1) |
#define PR_INDEX_USED ((pool_item_freelist_t)-1) |
| #define PR_INDEX_EOL ((pool_item_freelist_t)-2) |
#define PR_INDEX_EOL ((pool_item_freelist_t)-2) |
| |
|
| static __inline void |
static inline void |
| pr_item_notouch_put(const struct pool *pp, struct pool_item_header *ph, |
pr_item_notouch_put(const struct pool *pp, struct pool_item_header *ph, |
| void *obj) |
void *obj) |
| { |
{ |
| Line 341 pr_item_notouch_put(const struct pool *p |
|
| Line 348 pr_item_notouch_put(const struct pool *p |
|
| ph->ph_firstfree = idx; |
ph->ph_firstfree = idx; |
| } |
} |
| |
|
| static __inline void * |
static inline void * |
| pr_item_notouch_get(const struct pool *pp, struct pool_item_header *ph) |
pr_item_notouch_get(const struct pool *pp, struct pool_item_header *ph) |
| { |
{ |
| int idx = ph->ph_firstfree; |
int idx = ph->ph_firstfree; |
| Line 354 pr_item_notouch_get(const struct pool *p |
|
| Line 361 pr_item_notouch_get(const struct pool *p |
|
| return ph->ph_page + ph->ph_off + idx * pp->pr_size; |
return ph->ph_page + ph->ph_off + idx * pp->pr_size; |
| } |
} |
| |
|
| static __inline int |
static inline int |
| phtree_compare(struct pool_item_header *a, struct pool_item_header *b) |
phtree_compare(struct pool_item_header *a, struct pool_item_header *b) |
| { |
{ |
| if (a->ph_page < b->ph_page) |
if (a->ph_page < b->ph_page) |
| Line 371 SPLAY_GENERATE(phtree, pool_item_header, |
|
| Line 378 SPLAY_GENERATE(phtree, pool_item_header, |
|
| /* |
/* |
| * Return the pool page header based on page address. |
* Return the pool page header based on page address. |
| */ |
*/ |
| static __inline struct pool_item_header * |
static inline struct pool_item_header * |
| pr_find_pagehead(struct pool *pp, caddr_t page) |
pr_find_pagehead(struct pool *pp, caddr_t page) |
| { |
{ |
| struct pool_item_header *ph, tmp; |
struct pool_item_header *ph, tmp; |
| Line 404 pr_pagelist_free(struct pool *pp, struct |
|
| Line 411 pr_pagelist_free(struct pool *pp, struct |
|
| /* |
/* |
| * Remove a page from the pool. |
* Remove a page from the pool. |
| */ |
*/ |
| static __inline void |
static inline void |
| pr_rmpage(struct pool *pp, struct pool_item_header *ph, |
pr_rmpage(struct pool *pp, struct pool_item_header *ph, |
| struct pool_pagelist *pq) |
struct pool_pagelist *pq) |
| { |
{ |
| Line 440 pr_rmpage(struct pool *pp, struct pool_i |
|
| Line 447 pr_rmpage(struct pool *pp, struct pool_i |
|
| pool_update_curpage(pp); |
pool_update_curpage(pp); |
| } |
} |
| |
|
| |
static boolean_t |
| |
pa_starved_p(struct pool_allocator *pa) |
| |
{ |
| |
|
| |
if (pa->pa_backingmap != NULL) { |
| |
return vm_map_starved_p(pa->pa_backingmap); |
| |
} |
| |
return FALSE; |
| |
} |
| |
|
| |
static int |
| |
pool_reclaim_callback(struct callback_entry *ce, void *obj, void *arg) |
| |
{ |
| |
struct pool *pp = obj; |
| |
struct pool_allocator *pa = pp->pr_alloc; |
| |
|
| |
KASSERT(&pp->pr_reclaimerentry == ce); |
| |
pool_reclaim(pp); |
| |
if (!pa_starved_p(pa)) { |
| |
return CALLBACK_CHAIN_ABORT; |
| |
} |
| |
return CALLBACK_CHAIN_CONTINUE; |
| |
} |
| |
|
| |
static void |
| |
pool_reclaim_register(struct pool *pp) |
| |
{ |
| |
struct vm_map *map = pp->pr_alloc->pa_backingmap; |
| |
int s; |
| |
|
| |
if (map == NULL) { |
| |
return; |
| |
} |
| |
|
| |
s = splvm(); /* not necessary for INTRSAFE maps, but don't care. */ |
| |
callback_register(&vm_map_to_kernel(map)->vmk_reclaim_callback, |
| |
&pp->pr_reclaimerentry, pp, pool_reclaim_callback); |
| |
splx(s); |
| |
} |
| |
|
| |
static void |
| |
pool_reclaim_unregister(struct pool *pp) |
| |
{ |
| |
struct vm_map *map = pp->pr_alloc->pa_backingmap; |
| |
int s; |
| |
|
| |
if (map == NULL) { |
| |
return; |
| |
} |
| |
|
| |
s = splvm(); /* not necessary for INTRSAFE maps, but don't care. */ |
| |
callback_unregister(&vm_map_to_kernel(map)->vmk_reclaim_callback, |
| |
&pp->pr_reclaimerentry); |
| |
splx(s); |
| |
} |
| |
|
| |
static void |
| |
pa_reclaim_register(struct pool_allocator *pa) |
| |
{ |
| |
struct vm_map *map = *pa->pa_backingmapptr; |
| |
struct pool *pp; |
| |
|
| |
KASSERT(pa->pa_backingmap == NULL); |
| |
if (map == NULL) { |
| |
SLIST_INSERT_HEAD(&pa_deferinitq, pa, pa_q); |
| |
return; |
| |
} |
| |
pa->pa_backingmap = map; |
| |
TAILQ_FOREACH(pp, &pa->pa_list, pr_alloc_list) { |
| |
pool_reclaim_register(pp); |
| |
} |
| |
} |
| |
|
| /* |
/* |
| * Initialize all the pools listed in the "pools" link set. |
* Initialize all the pools listed in the "pools" link set. |
| */ |
*/ |
| void |
void |
| link_pool_init(void) |
pool_subsystem_init(void) |
| { |
{ |
| |
struct pool_allocator *pa; |
| __link_set_decl(pools, struct link_pool_init); |
__link_set_decl(pools, struct link_pool_init); |
| struct link_pool_init * const *pi; |
struct link_pool_init * const *pi; |
| |
|
| Line 453 link_pool_init(void) |
|
| Line 534 link_pool_init(void) |
|
| pool_init((*pi)->pp, (*pi)->size, (*pi)->align, |
pool_init((*pi)->pp, (*pi)->size, (*pi)->align, |
| (*pi)->align_offset, (*pi)->flags, (*pi)->wchan, |
(*pi)->align_offset, (*pi)->flags, (*pi)->wchan, |
| (*pi)->palloc); |
(*pi)->palloc); |
| |
|
| |
while ((pa = SLIST_FIRST(&pa_deferinitq)) != NULL) { |
| |
KASSERT(pa->pa_backingmapptr != NULL); |
| |
KASSERT(*pa->pa_backingmapptr != NULL); |
| |
SLIST_REMOVE_HEAD(&pa_deferinitq, pa_q); |
| |
pa_reclaim_register(pa); |
| |
} |
| } |
} |
| |
|
| /* |
/* |
|
|
| pool_init(struct pool *pp, size_t size, u_int align, u_int ioff, int flags, |
pool_init(struct pool *pp, size_t size, u_int align, u_int ioff, int flags, |
| const char *wchan, struct pool_allocator *palloc) |
const char *wchan, struct pool_allocator *palloc) |
| { |
{ |
| int off, slack; |
#ifdef DEBUG |
| |
struct pool *pp1; |
| |
#endif |
| size_t trysize, phsize; |
size_t trysize, phsize; |
| int s; |
int off, slack, s; |
| |
|
| KASSERT((1UL << (CHAR_BIT * sizeof(pool_item_freelist_t))) - 2 >= |
KASSERT((1UL << (CHAR_BIT * sizeof(pool_item_freelist_t))) - 2 >= |
| PHPOOL_FREELIST_NELEM(PHPOOL_MAX - 1)); |
PHPOOL_FREELIST_NELEM(PHPOOL_MAX - 1)); |
| |
|
| |
#ifdef DEBUG |
| |
/* |
| |
* Check that the pool hasn't already been initialised and |
| |
* added to the list of all pools. |
| |
*/ |
| |
LIST_FOREACH(pp1, &pool_head, pr_poollist) { |
| |
if (pp == pp1) |
| |
panic("pool_init: pool %s already initialised", |
| |
wchan); |
| |
} |
| |
#endif |
| |
|
| #ifdef POOL_DIAGNOSTIC |
#ifdef POOL_DIAGNOSTIC |
| /* |
/* |
| * Always log if POOL_DIAGNOSTIC is defined. |
* Always log if POOL_DIAGNOSTIC is defined. |
| Line 480 pool_init(struct pool *pp, size_t size, |
|
| Line 582 pool_init(struct pool *pp, size_t size, |
|
| flags |= PR_LOGGING; |
flags |= PR_LOGGING; |
| #endif |
#endif |
| |
|
| #ifdef POOL_SUBPAGE |
|
| /* |
|
| * XXX We don't provide a real `nointr' back-end |
|
| * yet; all sub-pages come from a kmem back-end. |
|
| * maybe some day... |
|
| */ |
|
| if (palloc == NULL) { |
|
| extern struct pool_allocator pool_allocator_kmem_subpage; |
|
| palloc = &pool_allocator_kmem_subpage; |
|
| } |
|
| /* |
|
| * We'll assume any user-specified back-end allocator |
|
| * will deal with sub-pages, or simply don't care. |
|
| */ |
|
| #else |
|
| if (palloc == NULL) |
if (palloc == NULL) |
| palloc = &pool_allocator_kmem; |
palloc = &pool_allocator_kmem; |
| |
#ifdef POOL_SUBPAGE |
| |
if (size > palloc->pa_pagesz) { |
| |
if (palloc == &pool_allocator_kmem) |
| |
palloc = &pool_allocator_kmem_fullpage; |
| |
else if (palloc == &pool_allocator_nointr) |
| |
palloc = &pool_allocator_nointr_fullpage; |
| |
} |
| #endif /* POOL_SUBPAGE */ |
#endif /* POOL_SUBPAGE */ |
| if ((palloc->pa_flags & PA_INITIALIZED) == 0) { |
if ((palloc->pa_flags & PA_INITIALIZED) == 0) { |
| if (palloc->pa_pagesz == 0) { |
if (palloc->pa_pagesz == 0) |
| #ifdef POOL_SUBPAGE |
|
| if (palloc == &pool_allocator_kmem) |
|
| palloc->pa_pagesz = PAGE_SIZE; |
|
| else |
|
| palloc->pa_pagesz = POOL_SUBPAGE; |
|
| #else |
|
| palloc->pa_pagesz = PAGE_SIZE; |
palloc->pa_pagesz = PAGE_SIZE; |
| #endif /* POOL_SUBPAGE */ |
|
| } |
|
| |
|
| TAILQ_INIT(&palloc->pa_list); |
TAILQ_INIT(&palloc->pa_list); |
| |
|
| simple_lock_init(&palloc->pa_slock); |
simple_lock_init(&palloc->pa_slock); |
| palloc->pa_pagemask = ~(palloc->pa_pagesz - 1); |
palloc->pa_pagemask = ~(palloc->pa_pagesz - 1); |
| palloc->pa_pageshift = ffs(palloc->pa_pagesz) - 1; |
palloc->pa_pageshift = ffs(palloc->pa_pagesz) - 1; |
| |
|
| |
if (palloc->pa_backingmapptr != NULL) { |
| |
pa_reclaim_register(palloc); |
| |
} |
| palloc->pa_flags |= PA_INITIALIZED; |
palloc->pa_flags |= PA_INITIALIZED; |
| } |
} |
| |
|
| Line 537 pool_init(struct pool *pp, size_t size, |
|
| Line 627 pool_init(struct pool *pp, size_t size, |
|
| LIST_INIT(&pp->pr_emptypages); |
LIST_INIT(&pp->pr_emptypages); |
| LIST_INIT(&pp->pr_fullpages); |
LIST_INIT(&pp->pr_fullpages); |
| LIST_INIT(&pp->pr_partpages); |
LIST_INIT(&pp->pr_partpages); |
| TAILQ_INIT(&pp->pr_cachelist); |
LIST_INIT(&pp->pr_cachelist); |
| pp->pr_curpage = NULL; |
pp->pr_curpage = NULL; |
| pp->pr_npages = 0; |
pp->pr_npages = 0; |
| pp->pr_minitems = 0; |
pp->pr_minitems = 0; |
| Line 687 pool_init(struct pool *pp, size_t size, |
|
| Line 777 pool_init(struct pool *pp, size_t size, |
|
| |
|
| /* Insert into the list of all pools. */ |
/* Insert into the list of all pools. */ |
| simple_lock(&pool_head_slock); |
simple_lock(&pool_head_slock); |
| TAILQ_INSERT_TAIL(&pool_head, pp, pr_poollist); |
LIST_INSERT_HEAD(&pool_head, pp, pr_poollist); |
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| |
|
| /* Insert this into the list of pools using this allocator. */ |
/* Insert this into the list of pools using this allocator. */ |
| Line 696 pool_init(struct pool *pp, size_t size, |
|
| Line 786 pool_init(struct pool *pp, size_t size, |
|
| TAILQ_INSERT_TAIL(&palloc->pa_list, pp, pr_alloc_list); |
TAILQ_INSERT_TAIL(&palloc->pa_list, pp, pr_alloc_list); |
| simple_unlock(&palloc->pa_slock); |
simple_unlock(&palloc->pa_slock); |
| splx(s); |
splx(s); |
| |
pool_reclaim_register(pp); |
| } |
} |
| |
|
| /* |
/* |
| Line 710 pool_destroy(struct pool *pp) |
|
| Line 801 pool_destroy(struct pool *pp) |
|
| |
|
| /* Remove from global pool list */ |
/* Remove from global pool list */ |
| simple_lock(&pool_head_slock); |
simple_lock(&pool_head_slock); |
| TAILQ_REMOVE(&pool_head, pp, pr_poollist); |
LIST_REMOVE(pp, pr_poollist); |
| if (drainpp == pp) |
if (drainpp == pp) |
| drainpp = NULL; |
drainpp = NULL; |
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| |
|
| /* Remove this pool from its allocator's list of pools. */ |
/* Remove this pool from its allocator's list of pools. */ |
| |
pool_reclaim_unregister(pp); |
| s = splvm(); |
s = splvm(); |
| simple_lock(&pp->pr_alloc->pa_slock); |
simple_lock(&pp->pr_alloc->pa_slock); |
| TAILQ_REMOVE(&pp->pr_alloc->pa_list, pp, pr_alloc_list); |
TAILQ_REMOVE(&pp->pr_alloc->pa_list, pp, pr_alloc_list); |
| Line 725 pool_destroy(struct pool *pp) |
|
| Line 817 pool_destroy(struct pool *pp) |
|
| s = splvm(); |
s = splvm(); |
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| |
|
| KASSERT(TAILQ_EMPTY(&pp->pr_cachelist)); |
KASSERT(LIST_EMPTY(&pp->pr_cachelist)); |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (pp->pr_nout != 0) { |
if (pp->pr_nout != 0) { |
| Line 808 pool_get(struct pool *pp, int flags) |
|
| Line 900 pool_get(struct pool *pp, int flags) |
|
| (flags & PR_WAITOK) != 0)) |
(flags & PR_WAITOK) != 0)) |
| panic("pool_get: %s: must have NOWAIT", pp->pr_wchan); |
panic("pool_get: %s: must have NOWAIT", pp->pr_wchan); |
| |
|
| |
#endif /* DIAGNOSTIC */ |
| #ifdef LOCKDEBUG |
#ifdef LOCKDEBUG |
| if (flags & PR_WAITOK) |
if (flags & PR_WAITOK) |
| simple_lock_only_held(NULL, "pool_get(PR_WAITOK)"); |
simple_lock_only_held(NULL, "pool_get(PR_WAITOK)"); |
| |
SCHED_ASSERT_UNLOCKED(); |
| #endif |
#endif |
| #endif /* DIAGNOSTIC */ |
|
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
| Line 880 pool_get(struct pool *pp, int flags) |
|
| Line 973 pool_get(struct pool *pp, int flags) |
|
| * has no items in its bucket. |
* has no items in its bucket. |
| */ |
*/ |
| if ((ph = pp->pr_curpage) == NULL) { |
if ((ph = pp->pr_curpage) == NULL) { |
| |
int error; |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (pp->pr_nitems != 0) { |
if (pp->pr_nitems != 0) { |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| Line 895 pool_get(struct pool *pp, int flags) |
|
| Line 990 pool_get(struct pool *pp, int flags) |
|
| * may block. |
* may block. |
| */ |
*/ |
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
error = pool_grow(pp, flags); |
| v = pool_allocator_alloc(pp, flags); |
pr_enter(pp, file, line); |
| if (__predict_true(v != NULL)) |
if (error != 0) { |
| ph = pool_alloc_item_header(pp, v, flags); |
|
| |
|
| if (__predict_false(v == NULL || ph == NULL)) { |
|
| if (v != NULL) |
|
| pool_allocator_free(pp, v); |
|
| |
|
| simple_lock(&pp->pr_slock); |
|
| pr_enter(pp, file, line); |
|
| |
|
| /* |
/* |
| * We were unable to allocate a page or item |
* We were unable to allocate a page or item |
| * header, but we released the lock during |
* header, but we released the lock during |
| Line 916 pool_get(struct pool *pp, int flags) |
|
| Line 1002 pool_get(struct pool *pp, int flags) |
|
| if (pp->pr_curpage != NULL) |
if (pp->pr_curpage != NULL) |
| goto startover; |
goto startover; |
| |
|
| if ((flags & PR_WAITOK) == 0) { |
pp->pr_nfail++; |
| pp->pr_nfail++; |
|
| pr_leave(pp); |
|
| simple_unlock(&pp->pr_slock); |
|
| return (NULL); |
|
| } |
|
| |
|
| /* |
|
| * Wait for items to be returned to this pool. |
|
| * |
|
| * XXX: maybe we should wake up once a second and |
|
| * try again? |
|
| */ |
|
| pp->pr_flags |= PR_WANTED; |
|
| /* PA_WANTED is already set on the allocator. */ |
|
| pr_leave(pp); |
pr_leave(pp); |
| ltsleep(pp, PSWP, pp->pr_wchan, 0, &pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| pr_enter(pp, file, line); |
return (NULL); |
| goto startover; |
|
| } |
} |
| |
|
| /* We have more memory; add it to the pool */ |
|
| simple_lock(&pp->pr_slock); |
|
| pr_enter(pp, file, line); |
|
| pool_prime_page(pp, v, ph); |
|
| pp->pr_npagealloc++; |
|
| |
|
| /* Start the allocation process over. */ |
/* Start the allocation process over. */ |
| goto startover; |
goto startover; |
| } |
} |
| Line 959 pool_get(struct pool *pp, int flags) |
|
| Line 1024 pool_get(struct pool *pp, int flags) |
|
| pr_log(pp, v, PRLOG_GET, file, line); |
pr_log(pp, v, PRLOG_GET, file, line); |
| #endif |
#endif |
| } else { |
} else { |
| v = pi = TAILQ_FIRST(&ph->ph_itemlist); |
v = pi = LIST_FIRST(&ph->ph_itemlist); |
| if (__predict_false(v == NULL)) { |
if (__predict_false(v == NULL)) { |
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| Line 991 pool_get(struct pool *pp, int flags) |
|
| Line 1056 pool_get(struct pool *pp, int flags) |
|
| /* |
/* |
| * Remove from item list. |
* Remove from item list. |
| */ |
*/ |
| TAILQ_REMOVE(&ph->ph_itemlist, pi, pi_list); |
LIST_REMOVE(pi, pi_list); |
| } |
} |
| pp->pr_nitems--; |
pp->pr_nitems--; |
| pp->pr_nout++; |
pp->pr_nout++; |
| Line 1013 pool_get(struct pool *pp, int flags) |
|
| Line 1078 pool_get(struct pool *pp, int flags) |
|
| if (ph->ph_nmissing == pp->pr_itemsperpage) { |
if (ph->ph_nmissing == pp->pr_itemsperpage) { |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (__predict_false((pp->pr_roflags & PR_NOTOUCH) == 0 && |
if (__predict_false((pp->pr_roflags & PR_NOTOUCH) == 0 && |
| !TAILQ_EMPTY(&ph->ph_itemlist))) { |
!LIST_EMPTY(&ph->ph_itemlist))) { |
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| panic("pool_get: %s: nmissing inconsistent", |
panic("pool_get: %s: nmissing inconsistent", |
| Line 1030 pool_get(struct pool *pp, int flags) |
|
| Line 1095 pool_get(struct pool *pp, int flags) |
|
| } |
} |
| |
|
| pp->pr_nget++; |
pp->pr_nget++; |
| |
pr_leave(pp); |
| |
|
| /* |
/* |
| * If we have a low water mark and we are now below that low |
* If we have a low water mark and we are now below that low |
| Line 1043 pool_get(struct pool *pp, int flags) |
|
| Line 1109 pool_get(struct pool *pp, int flags) |
|
| */ |
*/ |
| } |
} |
| |
|
| pr_leave(pp); |
|
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| return (v); |
return (v); |
| } |
} |
| Line 1057 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1122 pool_do_put(struct pool *pp, void *v, st |
|
| struct pool_item *pi = v; |
struct pool_item *pi = v; |
| struct pool_item_header *ph; |
struct pool_item_header *ph; |
| caddr_t page; |
caddr_t page; |
| int s; |
|
| |
|
| LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
| |
SCHED_ASSERT_UNLOCKED(); |
| |
|
| page = (caddr_t)((u_long)v & pp->pr_alloc->pa_pagemask); |
page = (caddr_t)((u_long)v & pp->pr_alloc->pa_pagemask); |
| |
|
| Line 1102 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1167 pool_do_put(struct pool *pp, void *v, st |
|
| } |
} |
| #endif |
#endif |
| |
|
| TAILQ_INSERT_HEAD(&ph->ph_itemlist, pi, pi_list); |
LIST_INSERT_HEAD(&ph->ph_itemlist, pi, pi_list); |
| } |
} |
| KDASSERT(ph->ph_nmissing != 0); |
KDASSERT(ph->ph_nmissing != 0); |
| ph->ph_nmissing--; |
ph->ph_nmissing--; |
| Line 1139 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1204 pool_do_put(struct pool *pp, void *v, st |
|
| pp->pr_nidle++; |
pp->pr_nidle++; |
| if (pp->pr_npages > pp->pr_minpages && |
if (pp->pr_npages > pp->pr_minpages && |
| (pp->pr_npages > pp->pr_maxpages || |
(pp->pr_npages > pp->pr_maxpages || |
| (pp->pr_alloc->pa_flags & PA_WANT) != 0)) { |
pa_starved_p(pp->pr_alloc))) { |
| pr_rmpage(pp, ph, pq); |
pr_rmpage(pp, ph, pq); |
| } else { |
} else { |
| LIST_REMOVE(ph, ph_pagelist); |
LIST_REMOVE(ph, ph_pagelist); |
| Line 1151 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1216 pool_do_put(struct pool *pp, void *v, st |
|
| * be reclaimed by the pagedaemon. This minimizes |
* be reclaimed by the pagedaemon. This minimizes |
| * ping-pong'ing for memory. |
* ping-pong'ing for memory. |
| */ |
*/ |
| s = splclock(); |
getmicrotime(&ph->ph_time); |
| ph->ph_time = mono_time; |
|
| splx(s); |
|
| } |
} |
| pool_update_curpage(pp); |
pool_update_curpage(pp); |
| } |
} |
| Line 1192 _pool_put(struct pool *pp, void *v, cons |
|
| Line 1255 _pool_put(struct pool *pp, void *v, cons |
|
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| |
|
| if (! LIST_EMPTY(&pq)) |
pr_pagelist_free(pp, &pq); |
| pr_pagelist_free(pp, &pq); |
|
| } |
} |
| #undef pool_put |
#undef pool_put |
| #endif /* POOL_DIAGNOSTIC */ |
#endif /* POOL_DIAGNOSTIC */ |
| Line 1209 pool_put(struct pool *pp, void *v) |
|
| Line 1271 pool_put(struct pool *pp, void *v) |
|
| pool_do_put(pp, v, &pq); |
pool_do_put(pp, v, &pq); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| |
|
| if (! LIST_EMPTY(&pq)) |
pr_pagelist_free(pp, &pq); |
| pr_pagelist_free(pp, &pq); |
|
| } |
} |
| |
|
| #ifdef POOL_DIAGNOSTIC |
#ifdef POOL_DIAGNOSTIC |
| Line 1218 pool_put(struct pool *pp, void *v) |
|
| Line 1279 pool_put(struct pool *pp, void *v) |
|
| #endif |
#endif |
| |
|
| /* |
/* |
| |
* pool_grow: grow a pool by a page. |
| |
* |
| |
* => called with pool locked. |
| |
* => unlock and relock the pool. |
| |
* => return with pool locked. |
| |
*/ |
| |
|
| |
static int |
| |
pool_grow(struct pool *pp, int flags) |
| |
{ |
| |
struct pool_item_header *ph = NULL; |
| |
char *cp; |
| |
|
| |
simple_unlock(&pp->pr_slock); |
| |
cp = pool_allocator_alloc(pp, flags); |
| |
if (__predict_true(cp != NULL)) { |
| |
ph = pool_alloc_item_header(pp, cp, flags); |
| |
} |
| |
if (__predict_false(cp == NULL || ph == NULL)) { |
| |
if (cp != NULL) { |
| |
pool_allocator_free(pp, cp); |
| |
} |
| |
simple_lock(&pp->pr_slock); |
| |
return ENOMEM; |
| |
} |
| |
|
| |
simple_lock(&pp->pr_slock); |
| |
pool_prime_page(pp, cp, ph); |
| |
pp->pr_npagealloc++; |
| |
return 0; |
| |
} |
| |
|
| |
/* |
| * Add N items to the pool. |
* Add N items to the pool. |
| */ |
*/ |
| int |
int |
| pool_prime(struct pool *pp, int n) |
pool_prime(struct pool *pp, int n) |
| { |
{ |
| struct pool_item_header *ph = NULL; |
|
| caddr_t cp; |
|
| int newpages; |
int newpages; |
| |
int error = 0; |
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| |
|
| newpages = roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
newpages = roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
| |
|
| while (newpages-- > 0) { |
while (newpages-- > 0) { |
| simple_unlock(&pp->pr_slock); |
error = pool_grow(pp, PR_NOWAIT); |
| cp = pool_allocator_alloc(pp, PR_NOWAIT); |
if (error) { |
| if (__predict_true(cp != NULL)) |
|
| ph = pool_alloc_item_header(pp, cp, PR_NOWAIT); |
|
| |
|
| if (__predict_false(cp == NULL || ph == NULL)) { |
|
| if (cp != NULL) |
|
| pool_allocator_free(pp, cp); |
|
| simple_lock(&pp->pr_slock); |
|
| break; |
break; |
| } |
} |
| |
|
| simple_lock(&pp->pr_slock); |
|
| pool_prime_page(pp, cp, ph); |
|
| pp->pr_npagealloc++; |
|
| pp->pr_minpages++; |
pp->pr_minpages++; |
| } |
} |
| |
|
| Line 1254 pool_prime(struct pool *pp, int n) |
|
| Line 1336 pool_prime(struct pool *pp, int n) |
|
| pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
| |
|
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| return (0); |
return error; |
| } |
} |
| |
|
| /* |
/* |
| Line 1270 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1352 pool_prime_page(struct pool *pp, caddr_t |
|
| unsigned int align = pp->pr_align; |
unsigned int align = pp->pr_align; |
| unsigned int ioff = pp->pr_itemoffset; |
unsigned int ioff = pp->pr_itemoffset; |
| int n; |
int n; |
| int s; |
|
| |
|
| LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
| |
|
| Line 1283 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1364 pool_prime_page(struct pool *pp, caddr_t |
|
| * Insert page header. |
* Insert page header. |
| */ |
*/ |
| LIST_INSERT_HEAD(&pp->pr_emptypages, ph, ph_pagelist); |
LIST_INSERT_HEAD(&pp->pr_emptypages, ph, ph_pagelist); |
| TAILQ_INIT(&ph->ph_itemlist); |
LIST_INIT(&ph->ph_itemlist); |
| ph->ph_page = storage; |
ph->ph_page = storage; |
| ph->ph_nmissing = 0; |
ph->ph_nmissing = 0; |
| s = splclock(); |
getmicrotime(&ph->ph_time); |
| ph->ph_time = mono_time; |
|
| splx(s); |
|
| if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
| SPLAY_INSERT(phtree, &pp->pr_phtree, ph); |
SPLAY_INSERT(phtree, &pp->pr_phtree, ph); |
| |
|
| Line 1329 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1408 pool_prime_page(struct pool *pp, caddr_t |
|
| KASSERT(((((vaddr_t)pi) + ioff) & (align - 1)) == 0); |
KASSERT(((((vaddr_t)pi) + ioff) & (align - 1)) == 0); |
| |
|
| /* Insert on page list */ |
/* Insert on page list */ |
| TAILQ_INSERT_TAIL(&ph->ph_itemlist, pi, pi_list); |
LIST_INSERT_HEAD(&ph->ph_itemlist, pi, pi_list); |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| pi->pi_magic = PI_MAGIC; |
pi->pi_magic = PI_MAGIC; |
| #endif |
#endif |
| Line 1359 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1438 pool_prime_page(struct pool *pp, caddr_t |
|
| static int |
static int |
| pool_catchup(struct pool *pp) |
pool_catchup(struct pool *pp) |
| { |
{ |
| struct pool_item_header *ph = NULL; |
|
| caddr_t cp; |
|
| int error = 0; |
int error = 0; |
| |
|
| while (POOL_NEEDS_CATCHUP(pp)) { |
while (POOL_NEEDS_CATCHUP(pp)) { |
| /* |
error = pool_grow(pp, PR_NOWAIT); |
| * Call the page back-end allocator for more memory. |
if (error) { |
| * |
|
| * XXX: We never wait, so should we bother unlocking |
|
| * the pool descriptor? |
|
| */ |
|
| simple_unlock(&pp->pr_slock); |
|
| cp = pool_allocator_alloc(pp, PR_NOWAIT); |
|
| if (__predict_true(cp != NULL)) |
|
| ph = pool_alloc_item_header(pp, cp, PR_NOWAIT); |
|
| if (__predict_false(cp == NULL || ph == NULL)) { |
|
| if (cp != NULL) |
|
| pool_allocator_free(pp, cp); |
|
| error = ENOMEM; |
|
| simple_lock(&pp->pr_slock); |
|
| break; |
break; |
| } |
} |
| simple_lock(&pp->pr_slock); |
|
| pool_prime_page(pp, cp, ph); |
|
| pp->pr_npagealloc++; |
|
| } |
} |
| |
return error; |
| return (error); |
|
| } |
} |
| |
|
| static void |
static void |
| Line 1470 pool_reclaim(struct pool *pp) |
|
| Line 1530 pool_reclaim(struct pool *pp) |
|
| { |
{ |
| struct pool_item_header *ph, *phnext; |
struct pool_item_header *ph, *phnext; |
| struct pool_cache *pc; |
struct pool_cache *pc; |
| struct timeval curtime; |
|
| struct pool_pagelist pq; |
struct pool_pagelist pq; |
| struct timeval diff; |
struct pool_cache_grouplist pcgl; |
| int s; |
struct timeval curtime, diff; |
| |
|
| if (pp->pr_drain_hook != NULL) { |
if (pp->pr_drain_hook != NULL) { |
| /* |
/* |
| Line 1487 pool_reclaim(struct pool *pp) |
|
| Line 1546 pool_reclaim(struct pool *pp) |
|
| pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
| |
|
| LIST_INIT(&pq); |
LIST_INIT(&pq); |
| |
LIST_INIT(&pcgl); |
| |
|
| /* |
/* |
| * Reclaim items from the pool's caches. |
* Reclaim items from the pool's caches. |
| */ |
*/ |
| TAILQ_FOREACH(pc, &pp->pr_cachelist, pc_poollist) |
LIST_FOREACH(pc, &pp->pr_cachelist, pc_poollist) |
| pool_cache_reclaim(pc, &pq); |
pool_cache_reclaim(pc, &pq, &pcgl); |
| |
|
| s = splclock(); |
getmicrotime(&curtime); |
| curtime = mono_time; |
|
| splx(s); |
|
| |
|
| for (ph = LIST_FIRST(&pp->pr_emptypages); ph != NULL; ph = phnext) { |
for (ph = LIST_FIRST(&pp->pr_emptypages); ph != NULL; ph = phnext) { |
| phnext = LIST_NEXT(ph, ph_pagelist); |
phnext = LIST_NEXT(ph, ph_pagelist); |
| Line 1507 pool_reclaim(struct pool *pp) |
|
| Line 1565 pool_reclaim(struct pool *pp) |
|
| |
|
| KASSERT(ph->ph_nmissing == 0); |
KASSERT(ph->ph_nmissing == 0); |
| timersub(&curtime, &ph->ph_time, &diff); |
timersub(&curtime, &ph->ph_time, &diff); |
| if (diff.tv_sec < pool_inactive_time) |
if (diff.tv_sec < pool_inactive_time |
| |
&& !pa_starved_p(pp->pr_alloc)) |
| continue; |
continue; |
| |
|
| /* |
/* |
| Line 1523 pool_reclaim(struct pool *pp) |
|
| Line 1582 pool_reclaim(struct pool *pp) |
|
| |
|
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| if (LIST_EMPTY(&pq)) |
if (LIST_EMPTY(&pq) && LIST_EMPTY(&pcgl)) |
| return (0); |
return 0; |
| |
|
| pr_pagelist_free(pp, &pq); |
pr_pagelist_free(pp, &pq); |
| |
pcg_grouplist_free(&pcgl); |
| return (1); |
return (1); |
| } |
} |
| |
|
| Line 1545 pool_drain(void *arg) |
|
| Line 1605 pool_drain(void *arg) |
|
| s = splvm(); |
s = splvm(); |
| simple_lock(&pool_head_slock); |
simple_lock(&pool_head_slock); |
| if (drainpp == NULL) { |
if (drainpp == NULL) { |
| drainpp = TAILQ_FIRST(&pool_head); |
drainpp = LIST_FIRST(&pool_head); |
| } |
} |
| if (drainpp) { |
if (drainpp) { |
| pp = drainpp; |
pp = drainpp; |
| drainpp = TAILQ_NEXT(pp, pr_poollist); |
drainpp = LIST_NEXT(pp, pr_poollist); |
| } |
} |
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| pool_reclaim(pp); |
if (pp) |
| |
pool_reclaim(pp); |
| splx(s); |
splx(s); |
| } |
} |
| |
|
| Line 1577 pool_print(struct pool *pp, const char * |
|
| Line 1638 pool_print(struct pool *pp, const char * |
|
| } |
} |
| |
|
| void |
void |
| |
pool_printall(const char *modif, void (*pr)(const char *, ...)) |
| |
{ |
| |
struct pool *pp; |
| |
|
| |
if (simple_lock_try(&pool_head_slock) == 0) { |
| |
(*pr)("WARNING: pool_head_slock is locked\n"); |
| |
} else { |
| |
simple_unlock(&pool_head_slock); |
| |
} |
| |
|
| |
LIST_FOREACH(pp, &pool_head, pr_poollist) { |
| |
pool_printit(pp, modif, pr); |
| |
} |
| |
} |
| |
|
| |
void |
| pool_printit(struct pool *pp, const char *modif, void (*pr)(const char *, ...)) |
pool_printit(struct pool *pp, const char *modif, void (*pr)(const char *, ...)) |
| { |
{ |
| int didlock = 0; |
|
| |
|
| if (pp == NULL) { |
if (pp == NULL) { |
| (*pr)("Must specify a pool to print.\n"); |
(*pr)("Must specify a pool to print.\n"); |
| Line 1598 pool_printit(struct pool *pp, const char |
|
| Line 1674 pool_printit(struct pool *pp, const char |
|
| if (simple_lock_try(&pp->pr_slock) == 0) |
if (simple_lock_try(&pp->pr_slock) == 0) |
| (*pr)("WARNING: pool %s is locked\n", pp->pr_wchan); |
(*pr)("WARNING: pool %s is locked\n", pp->pr_wchan); |
| else |
else |
| didlock = 1; |
simple_unlock(&pp->pr_slock); |
| |
|
| pool_print1(pp, modif, pr); |
pool_print1(pp, modif, pr); |
| |
|
| if (didlock) |
|
| simple_unlock(&pp->pr_slock); |
|
| } |
} |
| |
|
| static void |
static void |
| Line 1622 pool_print_pagelist(struct pool *pp, str |
|
| Line 1695 pool_print_pagelist(struct pool *pp, str |
|
| (u_long)ph->ph_time.tv_usec); |
(u_long)ph->ph_time.tv_usec); |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (!(pp->pr_roflags & PR_NOTOUCH)) { |
if (!(pp->pr_roflags & PR_NOTOUCH)) { |
| TAILQ_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
LIST_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
| if (pi->pi_magic != PI_MAGIC) { |
if (pi->pi_magic != PI_MAGIC) { |
| (*pr)("\t\t\titem %p, magic 0x%x\n", |
(*pr)("\t\t\titem %p, magic 0x%x\n", |
| pi, pi->pi_magic); |
pi, pi->pi_magic); |
| Line 1697 pool_print1(struct pool *pp, const char |
|
| Line 1770 pool_print1(struct pool *pp, const char |
|
| if (print_cache == 0) |
if (print_cache == 0) |
| goto skip_cache; |
goto skip_cache; |
| |
|
| TAILQ_FOREACH(pc, &pp->pr_cachelist, pc_poollist) { |
#define PR_GROUPLIST(pcg) \ |
| (*pr)("\tcache %p: allocfrom %p freeto %p\n", pc, |
(*pr)("\t\tgroup %p: avail %d\n", pcg, pcg->pcg_avail); \ |
| pc->pc_allocfrom, pc->pc_freeto); |
for (i = 0; i < PCG_NOBJECTS; i++) { \ |
| |
if (pcg->pcg_objects[i].pcgo_pa != \ |
| |
POOL_PADDR_INVALID) { \ |
| |
(*pr)("\t\t\t%p, 0x%llx\n", \ |
| |
pcg->pcg_objects[i].pcgo_va, \ |
| |
(unsigned long long) \ |
| |
pcg->pcg_objects[i].pcgo_pa); \ |
| |
} else { \ |
| |
(*pr)("\t\t\t%p\n", \ |
| |
pcg->pcg_objects[i].pcgo_va); \ |
| |
} \ |
| |
} |
| |
|
| |
LIST_FOREACH(pc, &pp->pr_cachelist, pc_poollist) { |
| |
(*pr)("\tcache %p\n", pc); |
| (*pr)("\t hits %lu misses %lu ngroups %lu nitems %lu\n", |
(*pr)("\t hits %lu misses %lu ngroups %lu nitems %lu\n", |
| pc->pc_hits, pc->pc_misses, pc->pc_ngroups, pc->pc_nitems); |
pc->pc_hits, pc->pc_misses, pc->pc_ngroups, pc->pc_nitems); |
| TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
(*pr)("\t full groups:\n"); |
| (*pr)("\t\tgroup %p: avail %d\n", pcg, pcg->pcg_avail); |
LIST_FOREACH(pcg, &pc->pc_fullgroups, pcg_list) { |
| for (i = 0; i < PCG_NOBJECTS; i++) { |
PR_GROUPLIST(pcg); |
| if (pcg->pcg_objects[i].pcgo_pa != |
} |
| POOL_PADDR_INVALID) { |
(*pr)("\t partial groups:\n"); |
| (*pr)("\t\t\t%p, 0x%llx\n", |
LIST_FOREACH(pcg, &pc->pc_partgroups, pcg_list) { |
| pcg->pcg_objects[i].pcgo_va, |
PR_GROUPLIST(pcg); |
| (unsigned long long) |
} |
| pcg->pcg_objects[i].pcgo_pa); |
(*pr)("\t empty groups:\n"); |
| } else { |
LIST_FOREACH(pcg, &pc->pc_emptygroups, pcg_list) { |
| (*pr)("\t\t\t%p\n", |
PR_GROUPLIST(pcg); |
| pcg->pcg_objects[i].pcgo_va); |
|
| } |
|
| } |
|
| } |
} |
| } |
} |
| |
#undef PR_GROUPLIST |
| |
|
| skip_cache: |
skip_cache: |
| pr_enter_check(pp, pr); |
pr_enter_check(pp, pr); |
| Line 1745 pool_chk_page(struct pool *pp, const cha |
|
| Line 1830 pool_chk_page(struct pool *pp, const cha |
|
| if ((pp->pr_roflags & PR_NOTOUCH) != 0) |
if ((pp->pr_roflags & PR_NOTOUCH) != 0) |
| return 0; |
return 0; |
| |
|
| for (pi = TAILQ_FIRST(&ph->ph_itemlist), n = 0; |
for (pi = LIST_FIRST(&ph->ph_itemlist), n = 0; |
| pi != NULL; |
pi != NULL; |
| pi = TAILQ_NEXT(pi,pi_list), n++) { |
pi = LIST_NEXT(pi,pi_list), n++) { |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (pi->pi_magic != PI_MAGIC) { |
if (pi->pi_magic != PI_MAGIC) { |
| Line 1824 pool_cache_init(struct pool_cache *pc, s |
|
| Line 1909 pool_cache_init(struct pool_cache *pc, s |
|
| void *arg) |
void *arg) |
| { |
{ |
| |
|
| TAILQ_INIT(&pc->pc_grouplist); |
LIST_INIT(&pc->pc_emptygroups); |
| |
LIST_INIT(&pc->pc_fullgroups); |
| |
LIST_INIT(&pc->pc_partgroups); |
| simple_lock_init(&pc->pc_slock); |
simple_lock_init(&pc->pc_slock); |
| |
|
| pc->pc_allocfrom = NULL; |
|
| pc->pc_freeto = NULL; |
|
| pc->pc_pool = pp; |
pc->pc_pool = pp; |
| |
|
| pc->pc_ctor = ctor; |
pc->pc_ctor = ctor; |
| Line 1843 pool_cache_init(struct pool_cache *pc, s |
|
| Line 1928 pool_cache_init(struct pool_cache *pc, s |
|
| pc->pc_nitems = 0; |
pc->pc_nitems = 0; |
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| TAILQ_INSERT_TAIL(&pp->pr_cachelist, pc, pc_poollist); |
LIST_INSERT_HEAD(&pp->pr_cachelist, pc, pc_poollist); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| } |
} |
| |
|
| Line 1862 pool_cache_destroy(struct pool_cache *pc |
|
| Line 1947 pool_cache_destroy(struct pool_cache *pc |
|
| |
|
| /* ...and remove it from the pool's cache list. */ |
/* ...and remove it from the pool's cache list. */ |
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| TAILQ_REMOVE(&pp->pr_cachelist, pc, pc_poollist); |
LIST_REMOVE(pc, pc_poollist); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| } |
} |
| |
|
| static __inline void * |
static inline void * |
| pcg_get(struct pool_cache_group *pcg, paddr_t *pap) |
pcg_get(struct pool_cache_group *pcg, paddr_t *pap) |
| { |
{ |
| void *object; |
void *object; |
| Line 1885 pcg_get(struct pool_cache_group *pcg, pa |
|
| Line 1970 pcg_get(struct pool_cache_group *pcg, pa |
|
| return (object); |
return (object); |
| } |
} |
| |
|
| static __inline void |
static inline void |
| pcg_put(struct pool_cache_group *pcg, void *object, paddr_t pa) |
pcg_put(struct pool_cache_group *pcg, void *object, paddr_t pa) |
| { |
{ |
| u_int idx; |
u_int idx; |
| Line 1898 pcg_put(struct pool_cache_group *pcg, vo |
|
| Line 1983 pcg_put(struct pool_cache_group *pcg, vo |
|
| pcg->pcg_objects[idx].pcgo_pa = pa; |
pcg->pcg_objects[idx].pcgo_pa = pa; |
| } |
} |
| |
|
| |
static void |
| |
pcg_grouplist_free(struct pool_cache_grouplist *pcgl) |
| |
{ |
| |
struct pool_cache_group *pcg; |
| |
int s; |
| |
|
| |
s = splvm(); |
| |
while ((pcg = LIST_FIRST(pcgl)) != NULL) { |
| |
LIST_REMOVE(pcg, pcg_list); |
| |
pool_put(&pcgpool, pcg); |
| |
} |
| |
splx(s); |
| |
} |
| |
|
| /* |
/* |
| * pool_cache_get{,_paddr}: |
* pool_cache_get{,_paddr}: |
| * |
* |
| Line 1917 pool_cache_get_paddr(struct pool_cache * |
|
| Line 2016 pool_cache_get_paddr(struct pool_cache * |
|
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| |
|
| if ((pcg = pc->pc_allocfrom) == NULL) { |
pcg = LIST_FIRST(&pc->pc_partgroups); |
| TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
if (pcg == NULL) { |
| if (pcg->pcg_avail != 0) { |
pcg = LIST_FIRST(&pc->pc_fullgroups); |
| pc->pc_allocfrom = pcg; |
if (pcg != NULL) { |
| goto have_group; |
LIST_REMOVE(pcg, pcg_list); |
| } |
LIST_INSERT_HEAD(&pc->pc_partgroups, pcg, pcg_list); |
| } |
} |
| |
} |
| |
if (pcg == NULL) { |
| |
|
| /* |
/* |
| * No groups with any available objects. Allocate |
* No groups with any available objects. Allocate |
| Line 1950 pool_cache_get_paddr(struct pool_cache * |
|
| Line 2051 pool_cache_get_paddr(struct pool_cache * |
|
| return (object); |
return (object); |
| } |
} |
| |
|
| have_group: |
|
| pc->pc_hits++; |
pc->pc_hits++; |
| pc->pc_nitems--; |
pc->pc_nitems--; |
| object = pcg_get(pcg, pap); |
object = pcg_get(pcg, pap); |
| |
|
| if (pcg->pcg_avail == 0) |
if (pcg->pcg_avail == 0) { |
| pc->pc_allocfrom = NULL; |
LIST_REMOVE(pcg, pcg_list); |
| |
LIST_INSERT_HEAD(&pc->pc_emptygroups, pcg, pcg_list); |
| |
} |
| simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
| |
|
| return (object); |
return (object); |
| Line 1975 pool_cache_put_paddr(struct pool_cache * |
|
| Line 2076 pool_cache_put_paddr(struct pool_cache * |
|
| struct pool_cache_group *pcg; |
struct pool_cache_group *pcg; |
| int s; |
int s; |
| |
|
| |
if (__predict_false((pc->pc_pool->pr_flags & PR_WANTED) != 0)) { |
| |
goto destruct; |
| |
} |
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| |
|
| if ((pcg = pc->pc_freeto) == NULL) { |
pcg = LIST_FIRST(&pc->pc_partgroups); |
| TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
if (pcg == NULL) { |
| if (pcg->pcg_avail != PCG_NOBJECTS) { |
pcg = LIST_FIRST(&pc->pc_emptygroups); |
| pc->pc_freeto = pcg; |
if (pcg != NULL) { |
| goto have_group; |
LIST_REMOVE(pcg, pcg_list); |
| } |
LIST_INSERT_HEAD(&pc->pc_partgroups, pcg, pcg_list); |
| } |
} |
| |
} |
| |
if (pcg == NULL) { |
| |
|
| /* |
/* |
| * No empty groups to free the object to. Attempt to |
* No empty groups to free the object to. Attempt to |
| Line 1993 pool_cache_put_paddr(struct pool_cache * |
|
| Line 2100 pool_cache_put_paddr(struct pool_cache * |
|
| s = splvm(); |
s = splvm(); |
| pcg = pool_get(&pcgpool, PR_NOWAIT); |
pcg = pool_get(&pcgpool, PR_NOWAIT); |
| splx(s); |
splx(s); |
| if (pcg != NULL) { |
if (pcg == NULL) { |
| memset(pcg, 0, sizeof(*pcg)); |
destruct: |
| simple_lock(&pc->pc_slock); |
|
| pc->pc_ngroups++; |
|
| TAILQ_INSERT_TAIL(&pc->pc_grouplist, pcg, pcg_list); |
|
| if (pc->pc_freeto == NULL) |
|
| pc->pc_freeto = pcg; |
|
| goto have_group; |
|
| } |
|
| |
|
| /* |
/* |
| * Unable to allocate a cache group; destruct the object |
* Unable to allocate a cache group; destruct the object |
| * and free it back to the pool. |
* and free it back to the pool. |
| */ |
*/ |
| pool_cache_destruct_object(pc, object); |
pool_cache_destruct_object(pc, object); |
| return; |
return; |
| |
} |
| |
memset(pcg, 0, sizeof(*pcg)); |
| |
simple_lock(&pc->pc_slock); |
| |
pc->pc_ngroups++; |
| |
LIST_INSERT_HEAD(&pc->pc_partgroups, pcg, pcg_list); |
| } |
} |
| |
|
| have_group: |
|
| pc->pc_nitems++; |
pc->pc_nitems++; |
| pcg_put(pcg, object, pa); |
pcg_put(pcg, object, pa); |
| |
|
| if (pcg->pcg_avail == PCG_NOBJECTS) |
if (pcg->pcg_avail == PCG_NOBJECTS) { |
| pc->pc_freeto = NULL; |
LIST_REMOVE(pcg, pcg_list); |
| |
LIST_INSERT_HEAD(&pc->pc_fullgroups, pcg, pcg_list); |
| |
} |
| simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
| } |
} |
| |
|
| Line 2036 pool_cache_destruct_object(struct pool_c |
|
| Line 2141 pool_cache_destruct_object(struct pool_c |
|
| pool_put(pc->pc_pool, object); |
pool_put(pc->pc_pool, object); |
| } |
} |
| |
|
| |
static void |
| |
pool_do_cache_invalidate_grouplist(struct pool_cache_grouplist *pcgsl, |
| |
struct pool_cache *pc, struct pool_pagelist *pq, |
| |
struct pool_cache_grouplist *pcgdl) |
| |
{ |
| |
struct pool_cache_group *pcg, *npcg; |
| |
void *object; |
| |
|
| |
for (pcg = LIST_FIRST(pcgsl); pcg != NULL; pcg = npcg) { |
| |
npcg = LIST_NEXT(pcg, pcg_list); |
| |
while (pcg->pcg_avail != 0) { |
| |
pc->pc_nitems--; |
| |
object = pcg_get(pcg, NULL); |
| |
if (pc->pc_dtor != NULL) |
| |
(*pc->pc_dtor)(pc->pc_arg, object); |
| |
pool_do_put(pc->pc_pool, object, pq); |
| |
} |
| |
pc->pc_ngroups--; |
| |
LIST_REMOVE(pcg, pcg_list); |
| |
LIST_INSERT_HEAD(pcgdl, pcg, pcg_list); |
| |
} |
| |
} |
| |
|
| |
static void |
| |
pool_do_cache_invalidate(struct pool_cache *pc, struct pool_pagelist *pq, |
| |
struct pool_cache_grouplist *pcgl) |
| |
{ |
| |
|
| |
LOCK_ASSERT(simple_lock_held(&pc->pc_slock)); |
| |
LOCK_ASSERT(simple_lock_held(&pc->pc_pool->pr_slock)); |
| |
|
| |
pool_do_cache_invalidate_grouplist(&pc->pc_fullgroups, pc, pq, pcgl); |
| |
pool_do_cache_invalidate_grouplist(&pc->pc_partgroups, pc, pq, pcgl); |
| |
|
| |
KASSERT(LIST_EMPTY(&pc->pc_partgroups)); |
| |
KASSERT(LIST_EMPTY(&pc->pc_fullgroups)); |
| |
KASSERT(pc->pc_nitems == 0); |
| |
} |
| |
|
| /* |
/* |
| * pool_cache_invalidate: |
* pool_cache_invalidate: |
| * |
* |
|
|
| pool_cache_invalidate(struct pool_cache *pc) |
pool_cache_invalidate(struct pool_cache *pc) |
| { |
{ |
| struct pool_pagelist pq; |
struct pool_pagelist pq; |
| struct pool_cache_group *pcg, *npcg; |
struct pool_cache_grouplist pcgl; |
| void *object; |
|
| |
|
| LIST_INIT(&pq); |
LIST_INIT(&pq); |
| |
LIST_INIT(&pcgl); |
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| simple_lock(&pc->pc_pool->pr_slock); |
simple_lock(&pc->pc_pool->pr_slock); |
| |
|
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
pool_do_cache_invalidate(pc, &pq, &pcgl); |
| pcg = npcg) { |
|
| npcg = TAILQ_NEXT(pcg, pcg_list); |
|
| while (pcg->pcg_avail != 0) { |
|
| pc->pc_nitems--; |
|
| object = pcg_get(pcg, NULL); |
|
| if (pcg->pcg_avail == 0 && pc->pc_allocfrom == pcg) |
|
| pc->pc_allocfrom = NULL; |
|
| if (pc->pc_dtor != NULL) |
|
| (*pc->pc_dtor)(pc->pc_arg, object); |
|
| pool_do_put(pc->pc_pool, object, &pq); |
|
| } |
|
| } |
|
| |
|
| simple_unlock(&pc->pc_pool->pr_slock); |
simple_unlock(&pc->pc_pool->pr_slock); |
| simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
| |
|
| if (! LIST_EMPTY(&pq)) |
pr_pagelist_free(pc->pc_pool, &pq); |
| pr_pagelist_free(pc->pc_pool, &pq); |
pcg_grouplist_free(&pcgl); |
| } |
} |
| |
|
| /* |
/* |
| Line 2081 pool_cache_invalidate(struct pool_cache |
|
| Line 2213 pool_cache_invalidate(struct pool_cache |
|
| * Reclaim a pool cache for pool_reclaim(). |
* Reclaim a pool cache for pool_reclaim(). |
| */ |
*/ |
| static void |
static void |
| pool_cache_reclaim(struct pool_cache *pc, struct pool_pagelist *pq) |
pool_cache_reclaim(struct pool_cache *pc, struct pool_pagelist *pq, |
| |
struct pool_cache_grouplist *pcgl) |
| { |
{ |
| struct pool_cache_group *pcg, *npcg; |
|
| void *object; |
|
| int s; |
|
| |
|
| /* |
/* |
| * We're locking in the wrong order (normally pool_cache -> pool, |
* We're locking in the wrong order (normally pool_cache -> pool, |
| Line 2096 pool_cache_reclaim(struct pool_cache *pc |
|
| Line 2226 pool_cache_reclaim(struct pool_cache *pc |
|
| if (simple_lock_try(&pc->pc_slock) == 0) |
if (simple_lock_try(&pc->pc_slock) == 0) |
| return; |
return; |
| |
|
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
pool_do_cache_invalidate(pc, pq, pcgl); |
| pcg = npcg) { |
|
| npcg = TAILQ_NEXT(pcg, pcg_list); |
|
| while (pcg->pcg_avail != 0) { |
|
| pc->pc_nitems--; |
|
| object = pcg_get(pcg, NULL); |
|
| if (pcg->pcg_avail == 0 && pc->pc_allocfrom == pcg) |
|
| pc->pc_allocfrom = NULL; |
|
| if (pc->pc_dtor != NULL) |
|
| (*pc->pc_dtor)(pc->pc_arg, object); |
|
| pool_do_put(pc->pc_pool, object, pq); |
|
| } |
|
| pc->pc_ngroups--; |
|
| TAILQ_REMOVE(&pc->pc_grouplist, pcg, pcg_list); |
|
| if (pc->pc_freeto == pcg) |
|
| pc->pc_freeto = NULL; |
|
| s = splvm(); |
|
| pool_put(&pcgpool, pcg); |
|
| splx(s); |
|
| } |
|
| |
|
| simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
| } |
} |
| Line 2136 pool_cache_reclaim(struct pool_cache *pc |
|
| Line 2247 pool_cache_reclaim(struct pool_cache *pc |
|
| void *pool_page_alloc(struct pool *, int); |
void *pool_page_alloc(struct pool *, int); |
| void pool_page_free(struct pool *, void *); |
void pool_page_free(struct pool *, void *); |
| |
|
| |
#ifdef POOL_SUBPAGE |
| |
struct pool_allocator pool_allocator_kmem_fullpage = { |
| |
pool_page_alloc, pool_page_free, 0, |
| |
.pa_backingmapptr = &kmem_map, |
| |
}; |
| |
#else |
| struct pool_allocator pool_allocator_kmem = { |
struct pool_allocator pool_allocator_kmem = { |
| pool_page_alloc, pool_page_free, 0, |
pool_page_alloc, pool_page_free, 0, |
| |
.pa_backingmapptr = &kmem_map, |
| }; |
}; |
| |
#endif |
| |
|
| void *pool_page_alloc_nointr(struct pool *, int); |
void *pool_page_alloc_nointr(struct pool *, int); |
| void pool_page_free_nointr(struct pool *, void *); |
void pool_page_free_nointr(struct pool *, void *); |
| |
|
| |
#ifdef POOL_SUBPAGE |
| |
struct pool_allocator pool_allocator_nointr_fullpage = { |
| |
pool_page_alloc_nointr, pool_page_free_nointr, 0, |
| |
.pa_backingmapptr = &kernel_map, |
| |
}; |
| |
#else |
| struct pool_allocator pool_allocator_nointr = { |
struct pool_allocator pool_allocator_nointr = { |
| pool_page_alloc_nointr, pool_page_free_nointr, 0, |
pool_page_alloc_nointr, pool_page_free_nointr, 0, |
| |
.pa_backingmapptr = &kernel_map, |
| }; |
}; |
| |
#endif |
| |
|
| #ifdef POOL_SUBPAGE |
#ifdef POOL_SUBPAGE |
| void *pool_subpage_alloc(struct pool *, int); |
void *pool_subpage_alloc(struct pool *, int); |
| void pool_subpage_free(struct pool *, void *); |
void pool_subpage_free(struct pool *, void *); |
| |
|
| struct pool_allocator pool_allocator_kmem_subpage = { |
struct pool_allocator pool_allocator_kmem = { |
| pool_subpage_alloc, pool_subpage_free, 0, |
pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
| |
.pa_backingmapptr = &kmem_map, |
| |
}; |
| |
|
| |
void *pool_subpage_alloc_nointr(struct pool *, int); |
| |
void pool_subpage_free_nointr(struct pool *, void *); |
| |
|
| |
struct pool_allocator pool_allocator_nointr = { |
| |
pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
| |
.pa_backingmapptr = &kmem_map, |
| }; |
}; |
| #endif /* POOL_SUBPAGE */ |
#endif /* POOL_SUBPAGE */ |
| |
|
| /* |
static void * |
| * We have at least three different resources for the same allocation and |
pool_allocator_alloc(struct pool *pp, int flags) |
| * each resource can be depleted. First, we have the ready elements in the |
|
| * pool. Then we have the resource (typically a vm_map) for this allocator. |
|
| * Finally, we have physical memory. Waiting for any of these can be |
|
| * unnecessary when any other is freed, but the kernel doesn't support |
|
| * sleeping on multiple wait channels, so we have to employ another strategy. |
|
| * |
|
| * The caller sleeps on the pool (so that it can be awakened when an item |
|
| * is returned to the pool), but we set PA_WANT on the allocator. When a |
|
| * page is returned to the allocator and PA_WANT is set, pool_allocator_free |
|
| * will wake up all sleeping pools belonging to this allocator. |
|
| * |
|
| * XXX Thundering herd. |
|
| */ |
|
| void * |
|
| pool_allocator_alloc(struct pool *org, int flags) |
|
| { |
{ |
| struct pool_allocator *pa = org->pr_alloc; |
struct pool_allocator *pa = pp->pr_alloc; |
| struct pool *pp, *start; |
|
| int s, freed; |
|
| void *res; |
void *res; |
| |
|
| LOCK_ASSERT(!simple_lock_held(&org->pr_slock)); |
LOCK_ASSERT(!simple_lock_held(&pp->pr_slock)); |
| |
|
| do { |
|
| if ((res = (*pa->pa_alloc)(org, flags)) != NULL) |
|
| return (res); |
|
| if ((flags & PR_WAITOK) == 0) { |
|
| /* |
|
| * We only run the drain hookhere if PR_NOWAIT. |
|
| * In other cases, the hook will be run in |
|
| * pool_reclaim(). |
|
| */ |
|
| if (org->pr_drain_hook != NULL) { |
|
| (*org->pr_drain_hook)(org->pr_drain_hook_arg, |
|
| flags); |
|
| if ((res = (*pa->pa_alloc)(org, flags)) != NULL) |
|
| return (res); |
|
| } |
|
| break; |
|
| } |
|
| |
|
| |
res = (*pa->pa_alloc)(pp, flags); |
| |
if (res == NULL && (flags & PR_WAITOK) == 0) { |
| /* |
/* |
| * Drain all pools, except "org", that use this |
* We only run the drain hook here if PR_NOWAIT. |
| * allocator. We do this to reclaim VA space. |
* In other cases, the hook will be run in |
| * pa_alloc is responsible for waiting for |
* pool_reclaim(). |
| * physical memory. |
|
| * |
|
| * XXX We risk looping forever if start if someone |
|
| * calls pool_destroy on "start". But there is no |
|
| * other way to have potentially sleeping pool_reclaim, |
|
| * non-sleeping locks on pool_allocator, and some |
|
| * stirring of drained pools in the allocator. |
|
| * |
|
| * XXX Maybe we should use pool_head_slock for locking |
|
| * the allocators? |
|
| */ |
*/ |
| freed = 0; |
if (pp->pr_drain_hook != NULL) { |
| |
(*pp->pr_drain_hook)(pp->pr_drain_hook_arg, flags); |
| s = splvm(); |
res = (*pa->pa_alloc)(pp, flags); |
| simple_lock(&pa->pa_slock); |
|
| pp = start = TAILQ_FIRST(&pa->pa_list); |
|
| do { |
|
| TAILQ_REMOVE(&pa->pa_list, pp, pr_alloc_list); |
|
| TAILQ_INSERT_TAIL(&pa->pa_list, pp, pr_alloc_list); |
|
| if (pp == org) |
|
| continue; |
|
| simple_unlock(&pa->pa_slock); |
|
| freed = pool_reclaim(pp); |
|
| simple_lock(&pa->pa_slock); |
|
| } while ((pp = TAILQ_FIRST(&pa->pa_list)) != start && |
|
| freed == 0); |
|
| |
|
| if (freed == 0) { |
|
| /* |
|
| * We set PA_WANT here, the caller will most likely |
|
| * sleep waiting for pages (if not, this won't hurt |
|
| * that much), and there is no way to set this in |
|
| * the caller without violating locking order. |
|
| */ |
|
| pa->pa_flags |= PA_WANT; |
|
| } |
} |
| simple_unlock(&pa->pa_slock); |
} |
| splx(s); |
return res; |
| } while (freed); |
|
| return (NULL); |
|
| } |
} |
| |
|
| void |
static void |
| pool_allocator_free(struct pool *pp, void *v) |
pool_allocator_free(struct pool *pp, void *v) |
| { |
{ |
| struct pool_allocator *pa = pp->pr_alloc; |
struct pool_allocator *pa = pp->pr_alloc; |
| int s; |
|
| |
|
| LOCK_ASSERT(!simple_lock_held(&pp->pr_slock)); |
LOCK_ASSERT(!simple_lock_held(&pp->pr_slock)); |
| |
|
| (*pa->pa_free)(pp, v); |
(*pa->pa_free)(pp, v); |
| |
|
| s = splvm(); |
|
| simple_lock(&pa->pa_slock); |
|
| if ((pa->pa_flags & PA_WANT) == 0) { |
|
| simple_unlock(&pa->pa_slock); |
|
| splx(s); |
|
| return; |
|
| } |
|
| |
|
| TAILQ_FOREACH(pp, &pa->pa_list, pr_alloc_list) { |
|
| simple_lock(&pp->pr_slock); |
|
| if ((pp->pr_flags & PR_WANTED) != 0) { |
|
| pp->pr_flags &= ~PR_WANTED; |
|
| wakeup(pp); |
|
| } |
|
| simple_unlock(&pp->pr_slock); |
|
| } |
|
| pa->pa_flags &= ~PA_WANT; |
|
| simple_unlock(&pa->pa_slock); |
|
| splx(s); |
|
| } |
} |
| |
|
| void * |
void * |
| Line 2330 pool_subpage_free(struct pool *pp, void |
|
| Line 2379 pool_subpage_free(struct pool *pp, void |
|
| |
|
| /* We don't provide a real nointr allocator. Maybe later. */ |
/* We don't provide a real nointr allocator. Maybe later. */ |
| void * |
void * |
| pool_page_alloc_nointr(struct pool *pp, int flags) |
pool_subpage_alloc_nointr(struct pool *pp, int flags) |
| { |
{ |
| |
|
| return (pool_subpage_alloc(pp, flags)); |
return (pool_subpage_alloc(pp, flags)); |
| } |
} |
| |
|
| void |
void |
| pool_page_free_nointr(struct pool *pp, void *v) |
pool_subpage_free_nointr(struct pool *pp, void *v) |
| { |
{ |
| |
|
| pool_subpage_free(pp, v); |
pool_subpage_free(pp, v); |
| } |
} |
| #else |
#endif /* POOL_SUBPAGE */ |
| void * |
void * |
| pool_page_alloc_nointr(struct pool *pp, int flags) |
pool_page_alloc_nointr(struct pool *pp, int flags) |
| { |
{ |
| Line 2357 pool_page_free_nointr(struct pool *pp, v |
|
| Line 2406 pool_page_free_nointr(struct pool *pp, v |
|
| |
|
| uvm_km_free_poolpage_cache(kernel_map, (vaddr_t) v); |
uvm_km_free_poolpage_cache(kernel_map, (vaddr_t) v); |
| } |
} |
| #endif /* POOL_SUBPAGE */ |
|