| version 1.112.2.6, 2006/09/03 15:25:22 |
version 1.113, 2006/03/17 10:09:25 |
| 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 188 static void pool_prime_page(struct pool |
|
| Line 184 static void pool_prime_page(struct pool |
|
| static void pool_update_curpage(struct pool *); |
static void pool_update_curpage(struct pool *); |
| |
|
| static int pool_grow(struct pool *, int); |
static int pool_grow(struct pool *, int); |
| static void *pool_allocator_alloc(struct pool *, int); |
void *pool_allocator_alloc(struct pool *, int); |
| static void pool_allocator_free(struct pool *, void *); |
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 364 pr_item_notouch_get(const struct pool *p |
|
| Line 360 pr_item_notouch_get(const struct pool *p |
|
| 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) |
| { |
{ |
| |
|
| /* |
|
| * we consider pool_item_header with smaller ph_page bigger. |
|
| * (this unnatural ordering is for the benefit of pr_find_pagehead.) |
|
| */ |
|
| |
|
| if (a->ph_page < b->ph_page) |
if (a->ph_page < b->ph_page) |
| return (1); |
|
| else if (a->ph_page > b->ph_page) |
|
| return (-1); |
return (-1); |
| |
else if (a->ph_page > b->ph_page) |
| |
return (1); |
| else |
else |
| return (0); |
return (0); |
| } |
} |
| Line 382 SPLAY_PROTOTYPE(phtree, pool_item_header |
|
| Line 372 SPLAY_PROTOTYPE(phtree, pool_item_header |
|
| SPLAY_GENERATE(phtree, pool_item_header, ph_node, phtree_compare); |
SPLAY_GENERATE(phtree, pool_item_header, ph_node, phtree_compare); |
| |
|
| /* |
/* |
| * Return the pool page header based on item 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, void *v) |
pr_find_pagehead(struct pool *pp, caddr_t page) |
| { |
{ |
| struct pool_item_header *ph, tmp; |
struct pool_item_header *ph, tmp; |
| |
|
| if ((pp->pr_roflags & PR_NOALIGN) != 0) { |
if ((pp->pr_roflags & PR_PHINPAGE) != 0) |
| tmp.ph_page = (caddr_t)(uintptr_t)v; |
return ((struct pool_item_header *)(page + pp->pr_phoffset)); |
| ph = SPLAY_FIND(phtree, &pp->pr_phtree, &tmp); |
|
| if (ph == NULL) { |
|
| ph = SPLAY_ROOT(&pp->pr_phtree); |
|
| if (ph != NULL && phtree_compare(&tmp, ph) >= 0) { |
|
| ph = SPLAY_NEXT(phtree, &pp->pr_phtree, ph); |
|
| } |
|
| KASSERT(ph == NULL || phtree_compare(&tmp, ph) < 0); |
|
| } |
|
| } else { |
|
| caddr_t page = |
|
| (caddr_t)((uintptr_t)v & pp->pr_alloc->pa_pagemask); |
|
| |
|
| if ((pp->pr_roflags & PR_PHINPAGE) != 0) { |
|
| ph = (void *)(page + pp->pr_phoffset); |
|
| } else { |
|
| tmp.ph_page = page; |
|
| ph = SPLAY_FIND(phtree, &pp->pr_phtree, &tmp); |
|
| } |
|
| } |
|
| |
|
| KASSERT(ph == NULL || ((pp->pr_roflags & PR_PHINPAGE) != 0) || |
tmp.ph_page = page; |
| (ph->ph_page <= (char *)v && |
ph = SPLAY_FIND(phtree, &pp->pr_phtree, &tmp); |
| (char *)v < ph->ph_page + pp->pr_alloc->pa_pagesz)); |
|
| return ph; |
return ph; |
| } |
} |
| |
|
| Line 473 pr_rmpage(struct pool *pp, struct pool_i |
|
| Line 443 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 |
| pool_subsystem_init(void) |
link_pool_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 560 pool_subsystem_init(void) |
|
| Line 456 pool_subsystem_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) |
| { |
{ |
| #ifdef DEBUG |
int off, slack; |
| struct pool *pp1; |
|
| #endif |
|
| size_t trysize, phsize; |
size_t trysize, phsize; |
| int off, slack, s; |
int 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 627 pool_init(struct pool *pp, size_t size, |
|
| Line 502 pool_init(struct pool *pp, size_t size, |
|
| 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; |
| } |
} |
| |
|
| if (align == 0) |
if (align == 0) |
| align = ALIGN(1); |
align = ALIGN(1); |
| |
|
| if ((flags & PR_NOTOUCH) == 0 && size < sizeof(struct pool_item)) |
if (size < sizeof(struct pool_item)) |
| size = sizeof(struct pool_item); |
size = sizeof(struct pool_item); |
| |
|
| size = roundup(size, align); |
size = roundup(size, align); |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (size > palloc->pa_pagesz) |
if (size > palloc->pa_pagesz) |
| panic("pool_init: pool item size (%zu) too large", size); |
panic("pool_init: pool item size (%lu) too large", |
| |
(u_long)size); |
| #endif |
#endif |
| |
|
| /* |
/* |
| Line 692 pool_init(struct pool *pp, size_t size, |
|
| Line 564 pool_init(struct pool *pp, size_t size, |
|
| /* See the comment below about reserved bytes. */ |
/* See the comment below about reserved bytes. */ |
| trysize = palloc->pa_pagesz - ((align - ioff) % align); |
trysize = palloc->pa_pagesz - ((align - ioff) % align); |
| phsize = ALIGN(sizeof(struct pool_item_header)); |
phsize = ALIGN(sizeof(struct pool_item_header)); |
| if ((pp->pr_roflags & (PR_NOTOUCH | PR_NOALIGN)) == 0 && |
if ((pp->pr_roflags & PR_NOTOUCH) == 0 && |
| (pp->pr_size < MIN(palloc->pa_pagesz / 16, phsize << 3) || |
(pp->pr_size < MIN(palloc->pa_pagesz / 16, phsize << 3) || |
| trysize / pp->pr_size == (trysize - phsize) / pp->pr_size)) { |
trysize / pp->pr_size == (trysize - phsize) / pp->pr_size)) { |
| /* Use the end of the page for the page header */ |
/* Use the end of the page for the page header */ |
| Line 811 pool_init(struct pool *pp, size_t size, |
|
| Line 683 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 832 pool_destroy(struct pool *pp) |
|
| Line 703 pool_destroy(struct pool *pp) |
|
| 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 928 pool_get(struct pool *pp, int flags) |
|
| Line 798 pool_get(struct pool *pp, int flags) |
|
| #endif /* DIAGNOSTIC */ |
#endif /* DIAGNOSTIC */ |
| #ifdef LOCKDEBUG |
#ifdef LOCKDEBUG |
| if (flags & PR_WAITOK) |
if (flags & PR_WAITOK) |
| ASSERT_SLEEPABLE(NULL, "pool_get(PR_WAITOK)"); |
simple_lock_only_held(NULL, "pool_get(PR_WAITOK)"); |
| SCHED_ASSERT_UNLOCKED(); |
SCHED_ASSERT_UNLOCKED(); |
| #endif |
#endif |
| |
|
| Line 1027 pool_get(struct pool *pp, int flags) |
|
| Line 897 pool_get(struct pool *pp, int flags) |
|
| if (pp->pr_curpage != NULL) |
if (pp->pr_curpage != NULL) |
| goto startover; |
goto startover; |
| |
|
| pp->pr_nfail++; |
if ((flags & PR_WAITOK) == 0) { |
| |
pp->pr_nfail++; |
| |
pr_leave(pp); |
| |
simple_unlock(&pp->pr_slock); |
| |
return (NULL); |
| |
} |
| |
|
| |
/* |
| |
* Wait for items to be returned to this pool. |
| |
* |
| |
* wake up once a second and try again, |
| |
* as the check in pool_cache_put_paddr() is racy. |
| |
*/ |
| |
pp->pr_flags |= PR_WANTED; |
| |
/* PA_WANTED is already set on the allocator. */ |
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
ltsleep(pp, PSWP, pp->pr_wchan, hz, &pp->pr_slock); |
| return (NULL); |
pr_enter(pp, file, line); |
| } |
} |
| |
|
| /* Start the allocation process over. */ |
/* Start the allocation process over. */ |
| Line 1146 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1030 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; |
| |
int s; |
| |
|
| LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
| SCHED_ASSERT_UNLOCKED(); |
SCHED_ASSERT_UNLOCKED(); |
| |
|
| |
page = (caddr_t)((u_long)v & pp->pr_alloc->pa_pagemask); |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (__predict_false(pp->pr_nout == 0)) { |
if (__predict_false(pp->pr_nout == 0)) { |
| printf("pool %s: putting with none out\n", |
printf("pool %s: putting with none out\n", |
| Line 1158 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1046 pool_do_put(struct pool *pp, void *v, st |
|
| } |
} |
| #endif |
#endif |
| |
|
| if (__predict_false((ph = pr_find_pagehead(pp, v)) == NULL)) { |
if (__predict_false((ph = pr_find_pagehead(pp, page)) == NULL)) { |
| pr_printlog(pp, NULL, printf); |
pr_printlog(pp, NULL, printf); |
| panic("pool_put: %s: page header missing", pp->pr_wchan); |
panic("pool_put: %s: page header missing", pp->pr_wchan); |
| } |
} |
| Line 1226 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1114 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 || |
| pa_starved_p(pp->pr_alloc))) { |
(pp->pr_alloc->pa_flags & PA_WANT) != 0)) { |
| pr_rmpage(pp, ph, pq); |
pr_rmpage(pp, ph, pq); |
| } else { |
} else { |
| LIST_REMOVE(ph, ph_pagelist); |
LIST_REMOVE(ph, ph_pagelist); |
| Line 1238 pool_do_put(struct pool *pp, void *v, st |
|
| Line 1126 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. |
| */ |
*/ |
| getmicrotime(&ph->ph_time); |
s = splclock(); |
| |
ph->ph_time = mono_time; |
| |
splx(s); |
| } |
} |
| pool_update_curpage(pp); |
pool_update_curpage(pp); |
| } |
} |
| Line 1330 pool_grow(struct pool *pp, int flags) |
|
| Line 1220 pool_grow(struct pool *pp, int flags) |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| pool_prime_page(pp, cp, ph); |
pool_prime_page(pp, cp, ph); |
| pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
| |
pp->pr_minpages++; |
| return 0; |
return 0; |
| } |
} |
| |
|
| Line 1374 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1265 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)); |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if ((pp->pr_roflags & PR_NOALIGN) == 0 && |
if (((u_long)cp & (pp->pr_alloc->pa_pagesz - 1)) != 0) |
| ((uintptr_t)cp & (pp->pr_alloc->pa_pagesz - 1)) != 0) |
|
| panic("pool_prime_page: %s: unaligned page", pp->pr_wchan); |
panic("pool_prime_page: %s: unaligned page", pp->pr_wchan); |
| #endif |
#endif |
| |
|
| Line 1390 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1281 pool_prime_page(struct pool *pp, caddr_t |
|
| LIST_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; |
| getmicrotime(&ph->ph_time); |
s = splclock(); |
| |
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 1556 pool_reclaim(struct pool *pp) |
|
| Line 1449 pool_reclaim(struct pool *pp) |
|
| struct pool_pagelist pq; |
struct pool_pagelist pq; |
| struct pool_cache_grouplist pcgl; |
struct pool_cache_grouplist pcgl; |
| struct timeval curtime, diff; |
struct timeval curtime, diff; |
| |
int s; |
| |
|
| if (pp->pr_drain_hook != NULL) { |
if (pp->pr_drain_hook != NULL) { |
| /* |
/* |
| Line 1577 pool_reclaim(struct pool *pp) |
|
| Line 1471 pool_reclaim(struct pool *pp) |
|
| LIST_FOREACH(pc, &pp->pr_cachelist, pc_poollist) |
LIST_FOREACH(pc, &pp->pr_cachelist, pc_poollist) |
| pool_cache_reclaim(pc, &pq, &pcgl); |
pool_cache_reclaim(pc, &pq, &pcgl); |
| |
|
| getmicrotime(&curtime); |
s = splclock(); |
| |
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 1588 pool_reclaim(struct pool *pp) |
|
| Line 1484 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 1635 pool_drain(void *arg) |
|
| Line 1530 pool_drain(void *arg) |
|
| drainpp = LIST_NEXT(pp, pr_poollist); |
drainpp = LIST_NEXT(pp, pr_poollist); |
| } |
} |
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| if (pp) |
pool_reclaim(pp); |
| pool_reclaim(pp); |
|
| splx(s); |
splx(s); |
| } |
} |
| |
|
| Line 1786 pool_print1(struct pool *pp, const char |
|
| Line 1680 pool_print1(struct pool *pp, const char |
|
| (*pr)("\n"); |
(*pr)("\n"); |
| if ((pp->pr_roflags & PR_LOGGING) == 0) |
if ((pp->pr_roflags & PR_LOGGING) == 0) |
| (*pr)("\tno log\n"); |
(*pr)("\tno log\n"); |
| else { |
else |
| pr_printlog(pp, NULL, pr); |
pr_printlog(pp, NULL, pr); |
| } |
|
| |
|
| skip_log: |
skip_log: |
| if (print_cache == 0) |
if (print_cache == 0) |
| Line 1839 pool_chk_page(struct pool *pp, const cha |
|
| Line 1732 pool_chk_page(struct pool *pp, const cha |
|
| caddr_t page; |
caddr_t page; |
| int n; |
int n; |
| |
|
| if ((pp->pr_roflags & PR_NOALIGN) == 0) { |
page = (caddr_t)((u_long)ph & pp->pr_alloc->pa_pagemask); |
| page = (caddr_t)((uintptr_t)ph & pp->pr_alloc->pa_pagemask); |
if (page != ph->ph_page && |
| if (page != ph->ph_page && |
(pp->pr_roflags & PR_PHINPAGE) != 0) { |
| (pp->pr_roflags & PR_PHINPAGE) != 0) { |
if (label != NULL) |
| if (label != NULL) |
printf("%s: ", label); |
| printf("%s: ", label); |
printf("pool(%p:%s): page inconsistency: page %p;" |
| printf("pool(%p:%s): page inconsistency: page %p;" |
" at page head addr %p (p %p)\n", pp, |
| " at page head addr %p (p %p)\n", pp, |
pp->pr_wchan, ph->ph_page, |
| pp->pr_wchan, ph->ph_page, |
ph, page); |
| ph, page); |
return 1; |
| return 1; |
|
| } |
|
| } |
} |
| |
|
| if ((pp->pr_roflags & PR_NOTOUCH) != 0) |
if ((pp->pr_roflags & PR_NOTOUCH) != 0) |
| Line 1865 pool_chk_page(struct pool *pp, const cha |
|
| Line 1756 pool_chk_page(struct pool *pp, const cha |
|
| if (label != NULL) |
if (label != NULL) |
| printf("%s: ", label); |
printf("%s: ", label); |
| printf("pool(%s): free list modified: magic=%x;" |
printf("pool(%s): free list modified: magic=%x;" |
| " page %p; item ordinal %d; addr %p\n", |
" page %p; item ordinal %d;" |
| |
" addr %p (p %p)\n", |
| pp->pr_wchan, pi->pi_magic, ph->ph_page, |
pp->pr_wchan, pi->pi_magic, ph->ph_page, |
| n, pi); |
n, pi, page); |
| panic("pool"); |
panic("pool"); |
| } |
} |
| #endif |
#endif |
| if ((pp->pr_roflags & PR_NOALIGN) != 0) { |
page = |
| continue; |
(caddr_t)((u_long)pi & pp->pr_alloc->pa_pagemask); |
| } |
|
| page = (caddr_t)((uintptr_t)pi & pp->pr_alloc->pa_pagemask); |
|
| if (page == ph->ph_page) |
if (page == ph->ph_page) |
| continue; |
continue; |
| |
|
| Line 2038 pool_cache_get_paddr(struct pool_cache * |
|
| Line 1928 pool_cache_get_paddr(struct pool_cache * |
|
| |
|
| #ifdef LOCKDEBUG |
#ifdef LOCKDEBUG |
| if (flags & PR_WAITOK) |
if (flags & PR_WAITOK) |
| ASSERT_SLEEPABLE(NULL, "pool_cache_get(PR_WAITOK)"); |
simple_lock_only_held(NULL, "pool_cache_get(PR_WAITOK)"); |
| #endif |
#endif |
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| Line 2277 void pool_page_free(struct pool *, void |
|
| Line 2167 void pool_page_free(struct pool *, void |
|
| #ifdef POOL_SUBPAGE |
#ifdef POOL_SUBPAGE |
| struct pool_allocator pool_allocator_kmem_fullpage = { |
struct pool_allocator pool_allocator_kmem_fullpage = { |
| pool_page_alloc, pool_page_free, 0, |
pool_page_alloc, pool_page_free, 0, |
| .pa_backingmapptr = &kmem_map, |
|
| }; |
}; |
| #else |
#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 |
#endif |
| |
|
| Line 2292 void pool_page_free_nointr(struct pool * |
|
| Line 2180 void pool_page_free_nointr(struct pool * |
|
| #ifdef POOL_SUBPAGE |
#ifdef POOL_SUBPAGE |
| struct pool_allocator pool_allocator_nointr_fullpage = { |
struct pool_allocator pool_allocator_nointr_fullpage = { |
| pool_page_alloc_nointr, pool_page_free_nointr, 0, |
pool_page_alloc_nointr, pool_page_free_nointr, 0, |
| .pa_backingmapptr = &kernel_map, |
|
| }; |
}; |
| #else |
#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 |
#endif |
| |
|
| Line 2307 void pool_subpage_free(struct pool *, vo |
|
| Line 2193 void pool_subpage_free(struct pool *, vo |
|
| |
|
| struct pool_allocator pool_allocator_kmem = { |
struct pool_allocator pool_allocator_kmem = { |
| pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
| .pa_backingmapptr = &kmem_map, |
|
| }; |
}; |
| |
|
| void *pool_subpage_alloc_nointr(struct pool *, int); |
void *pool_subpage_alloc_nointr(struct pool *, int); |
| Line 2315 void pool_subpage_free_nointr(struct poo |
|
| Line 2200 void pool_subpage_free_nointr(struct poo |
|
| |
|
| struct pool_allocator pool_allocator_nointr = { |
struct pool_allocator pool_allocator_nointr = { |
| pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
pool_subpage_alloc, pool_subpage_free, POOL_SUBPAGE, |
| .pa_backingmapptr = &kmem_map, |
|
| }; |
}; |
| #endif /* POOL_SUBPAGE */ |
#endif /* POOL_SUBPAGE */ |
| |
|
| static void * |
/* |
| pool_allocator_alloc(struct pool *pp, int flags) |
* We have at least three different resources for the same allocation and |
| |
* 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 = pp->pr_alloc; |
struct pool_allocator *pa = org->pr_alloc; |
| |
struct pool *pp, *start; |
| |
int s, freed; |
| void *res; |
void *res; |
| |
|
| LOCK_ASSERT(!simple_lock_held(&pp->pr_slock)); |
LOCK_ASSERT(!simple_lock_held(&org->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) { |
|
| /* |
/* |
| * We only run the drain hook here if PR_NOWAIT. |
* Drain all pools, that use this allocator. |
| * In other cases, the hook will be run in |
* We do this to reclaim VA space. |
| * pool_reclaim(). |
* pa_alloc is responsible for waiting for |
| |
* 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? |
| */ |
*/ |
| if (pp->pr_drain_hook != NULL) { |
freed = 0; |
| (*pp->pr_drain_hook)(pp->pr_drain_hook_arg, flags); |
|
| res = (*pa->pa_alloc)(pp, flags); |
s = splvm(); |
| |
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); |
| |
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); |
| return res; |
splx(s); |
| |
} while (freed); |
| |
return (NULL); |
| } |
} |
| |
|
| static void |
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 * |