version 1.53, 2001/05/10 01:37:40 |
version 1.56, 2001/05/13 17:06:59 |
Line 148 struct pool_cache_group { |
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Line 148 struct pool_cache_group { |
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static void pool_cache_reclaim(struct pool_cache *); |
static void pool_cache_reclaim(struct pool_cache *); |
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static int pool_catchup(struct pool *); |
static int pool_catchup(struct pool *); |
static int pool_prime_page(struct pool *, caddr_t, int); |
static void pool_prime_page(struct pool *, caddr_t, |
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struct pool_item_header *); |
static void *pool_page_alloc(unsigned long, int, int); |
static void *pool_page_alloc(unsigned long, int, int); |
static void pool_page_free(void *, unsigned long, int); |
static void pool_page_free(void *, unsigned long, int); |
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Line 548 pool_destroy(struct pool *pp) |
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Line 549 pool_destroy(struct pool *pp) |
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free(pp, M_POOL); |
free(pp, M_POOL); |
} |
} |
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static __inline struct pool_item_header * |
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pool_alloc_item_header(struct pool *pp, caddr_t storage, int flags) |
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{ |
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struct pool_item_header *ph; |
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int s; |
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LOCK_ASSERT(simple_lock_held(&pp->pr_slock) == 0); |
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if ((pp->pr_roflags & PR_PHINPAGE) != 0) |
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ph = (struct pool_item_header *) (storage + pp->pr_phoffset); |
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else { |
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s = splhigh(); |
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ph = pool_get(&phpool, flags); |
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splx(s); |
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} |
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return (ph); |
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} |
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/* |
/* |
* Grab an item from the pool; must be called at appropriate spl level |
* Grab an item from the pool; must be called at appropriate spl level |
*/ |
*/ |
void * |
void * |
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#ifdef DIAGNOSTIC |
_pool_get(struct pool *pp, int flags, const char *file, long line) |
_pool_get(struct pool *pp, int flags, const char *file, long line) |
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#else |
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pool_get(struct pool *pp, int flags) |
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#endif |
{ |
{ |
void *v; |
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struct pool_item *pi; |
struct pool_item *pi; |
struct pool_item_header *ph; |
struct pool_item_header *ph; |
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void *v; |
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#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (__predict_false((pp->pr_roflags & PR_STATIC) && |
if (__predict_false((pp->pr_roflags & PR_STATIC) && |
Line 565 _pool_get(struct pool *pp, int flags, co |
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Line 588 _pool_get(struct pool *pp, int flags, co |
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pr_printlog(pp, NULL, printf); |
pr_printlog(pp, NULL, printf); |
panic("pool_get: static"); |
panic("pool_get: static"); |
} |
} |
#endif |
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if (__predict_false(curproc == NULL && doing_shutdown == 0 && |
if (__predict_false(curproc == NULL && doing_shutdown == 0 && |
(flags & PR_WAITOK) != 0)) |
(flags & PR_WAITOK) != 0)) |
panic("pool_get: must have NOWAIT"); |
panic("pool_get: must have NOWAIT"); |
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#endif |
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simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
Line 625 _pool_get(struct pool *pp, int flags, co |
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Line 648 _pool_get(struct pool *pp, int flags, co |
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* has no items in its bucket. |
* has no items in its bucket. |
*/ |
*/ |
if ((ph = pp->pr_curpage) == NULL) { |
if ((ph = pp->pr_curpage) == NULL) { |
void *v; |
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#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 644 _pool_get(struct pool *pp, int flags, co |
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Line 665 _pool_get(struct pool *pp, int flags, co |
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pr_leave(pp); |
pr_leave(pp); |
simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
v = (*pp->pr_alloc)(pp->pr_pagesz, flags, pp->pr_mtype); |
v = (*pp->pr_alloc)(pp->pr_pagesz, flags, pp->pr_mtype); |
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if (__predict_true(v != NULL)) |
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ph = pool_alloc_item_header(pp, v, flags); |
simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
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if (v == NULL) { |
if (__predict_false(v == NULL || ph == NULL)) { |
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if (v != NULL) |
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(*pp->pr_free)(v, pp->pr_pagesz, pp->pr_mtype); |
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/* |
/* |
* We were unable to allocate a page, but |
* We were unable to allocate a page or item |
* we released the lock during allocation, |
* header, but we released the lock during |
* so perhaps items were freed back to the |
* allocation, so perhaps items were freed |
* pool. Check for this case. |
* back to the pool. Check for this case. |
*/ |
*/ |
if (pp->pr_curpage != NULL) |
if (pp->pr_curpage != NULL) |
goto startover; |
goto startover; |
Line 686 _pool_get(struct pool *pp, int flags, co |
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Line 712 _pool_get(struct pool *pp, int flags, co |
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} |
} |
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/* We have more memory; add it to the pool */ |
/* We have more memory; add it to the pool */ |
if (pool_prime_page(pp, v, flags & PR_WAITOK) != 0) { |
pool_prime_page(pp, v, ph); |
/* |
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* Probably, we don't allowed to wait and |
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* couldn't allocate a page header. |
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*/ |
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(*pp->pr_free)(v, pp->pr_pagesz, pp->pr_mtype); |
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pp->pr_nfail++; |
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pr_leave(pp); |
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simple_unlock(&pp->pr_slock); |
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return (NULL); |
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} |
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pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
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/* Start the allocation process over. */ |
/* Start the allocation process over. */ |
Line 716 _pool_get(struct pool *pp, int flags, co |
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Line 732 _pool_get(struct pool *pp, int flags, co |
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pp->pr_wchan, pp->pr_nitems); |
pp->pr_wchan, pp->pr_nitems); |
panic("pool_get: nitems inconsistent\n"); |
panic("pool_get: nitems inconsistent\n"); |
} |
} |
#endif |
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pr_log(pp, v, PRLOG_GET, file, line); |
pr_log(pp, v, PRLOG_GET, file, line); |
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#ifdef DIAGNOSTIC |
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if (__predict_false(pi->pi_magic != PI_MAGIC)) { |
if (__predict_false(pi->pi_magic != PI_MAGIC)) { |
pr_printlog(pp, pi, printf); |
pr_printlog(pp, pi, printf); |
panic("pool_get(%s): free list modified: magic=%x; page %p;" |
panic("pool_get(%s): free list modified: magic=%x; page %p;" |
Line 795 _pool_get(struct pool *pp, int flags, co |
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Line 810 _pool_get(struct pool *pp, int flags, co |
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* Internal version of pool_put(). Pool is already locked/entered. |
* Internal version of pool_put(). Pool is already locked/entered. |
*/ |
*/ |
static void |
static void |
pool_do_put(struct pool *pp, void *v, const char *file, long line) |
pool_do_put(struct pool *pp, void *v) |
{ |
{ |
struct pool_item *pi = v; |
struct pool_item *pi = v; |
struct pool_item_header *ph; |
struct pool_item_header *ph; |
Line 812 pool_do_put(struct pool *pp, void *v, co |
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Line 827 pool_do_put(struct pool *pp, void *v, co |
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} |
} |
#endif |
#endif |
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pr_log(pp, v, PRLOG_PUT, file, line); |
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if (__predict_false((ph = pr_find_pagehead(pp, page)) == 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 924 pool_do_put(struct pool *pp, void *v, co |
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Line 937 pool_do_put(struct pool *pp, void *v, co |
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/* |
/* |
* Return resource to the pool; must be called at appropriate spl level |
* Return resource to the pool; must be called at appropriate spl level |
*/ |
*/ |
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#ifdef DIAGNOSTIC |
void |
void |
_pool_put(struct pool *pp, void *v, const char *file, long line) |
_pool_put(struct pool *pp, void *v, const char *file, long line) |
{ |
{ |
Line 931 _pool_put(struct pool *pp, void *v, cons |
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Line 945 _pool_put(struct pool *pp, void *v, cons |
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simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
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pool_do_put(pp, v, file, line); |
pr_log(pp, v, PRLOG_PUT, file, line); |
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pool_do_put(pp, v); |
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pr_leave(pp); |
pr_leave(pp); |
simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
} |
} |
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#else |
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void |
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pool_put(struct pool *pp, void *v) |
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{ |
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simple_lock(&pp->pr_slock); |
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pool_do_put(pp, v); |
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simple_unlock(&pp->pr_slock); |
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} |
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#endif |
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/* |
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* Add N items to the pool. |
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*/ |
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int |
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pool_prime(struct pool *pp, int n) |
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{ |
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struct pool_item_header *ph; |
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caddr_t cp; |
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int newpages, error = 0; |
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simple_lock(&pp->pr_slock); |
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newpages = roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
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while (newpages-- > 0) { |
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simple_unlock(&pp->pr_slock); |
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cp = (*pp->pr_alloc)(pp->pr_pagesz, PR_NOWAIT, pp->pr_mtype); |
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if (__predict_true(cp != NULL)) |
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ph = pool_alloc_item_header(pp, cp, PR_NOWAIT); |
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simple_lock(&pp->pr_slock); |
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if (__predict_false(cp == NULL || ph == NULL)) { |
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error = ENOMEM; |
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if (cp != NULL) |
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(*pp->pr_free)(cp, pp->pr_pagesz, pp->pr_mtype); |
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break; |
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} |
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pool_prime_page(pp, cp, ph); |
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pp->pr_npagealloc++; |
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pp->pr_minpages++; |
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} |
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if (pp->pr_minpages >= pp->pr_maxpages) |
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pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
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simple_unlock(&pp->pr_slock); |
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return (0); |
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} |
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/* |
/* |
* Add a page worth of items to the pool. |
* Add a page worth of items to the pool. |
* |
* |
* Note, we must be called with the pool descriptor LOCKED. |
* Note, we must be called with the pool descriptor LOCKED. |
*/ |
*/ |
static int |
static void |
pool_prime_page(struct pool *pp, caddr_t storage, int flags) |
pool_prime_page(struct pool *pp, caddr_t storage, struct pool_item_header *ph) |
{ |
{ |
struct pool_item *pi; |
struct pool_item *pi; |
struct pool_item_header *ph; |
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caddr_t cp = storage; |
caddr_t cp = storage; |
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 s, n; |
int n; |
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if (((u_long)cp & (pp->pr_pagesz - 1)) != 0) |
if (((u_long)cp & (pp->pr_pagesz - 1)) != 0) |
panic("pool_prime_page: %s: unaligned page", pp->pr_wchan); |
panic("pool_prime_page: %s: unaligned page", pp->pr_wchan); |
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if ((pp->pr_roflags & PR_PHINPAGE) != 0) { |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
ph = (struct pool_item_header *)(cp + pp->pr_phoffset); |
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} else { |
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s = splhigh(); |
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ph = pool_get(&phpool, flags); |
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splx(s); |
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if (ph == NULL) |
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return (ENOMEM); |
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LIST_INSERT_HEAD(&pp->pr_hashtab[PR_HASH_INDEX(pp, cp)], |
LIST_INSERT_HEAD(&pp->pr_hashtab[PR_HASH_INDEX(pp, cp)], |
ph, ph_hashlist); |
ph, ph_hashlist); |
} |
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/* |
/* |
* Insert page header. |
* Insert page header. |
Line 1016 pool_prime_page(struct pool *pp, caddr_t |
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Line 1076 pool_prime_page(struct pool *pp, caddr_t |
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if (++pp->pr_npages > pp->pr_hiwat) |
if (++pp->pr_npages > pp->pr_hiwat) |
pp->pr_hiwat = pp->pr_npages; |
pp->pr_hiwat = pp->pr_npages; |
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return (0); |
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} |
} |
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/* |
/* |
Line 1034 pool_prime_page(struct pool *pp, caddr_t |
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Line 1092 pool_prime_page(struct pool *pp, caddr_t |
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static int |
static int |
pool_catchup(struct pool *pp) |
pool_catchup(struct pool *pp) |
{ |
{ |
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struct pool_item_header *ph; |
caddr_t cp; |
caddr_t cp; |
int error = 0; |
int error = 0; |
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Line 1049 pool_catchup(struct pool *pp) |
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Line 1108 pool_catchup(struct pool *pp) |
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return (0); |
return (0); |
} |
} |
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while (pp->pr_nitems < pp->pr_minitems) { |
while (POOL_NEEDS_CATCHUP(pp)) { |
/* |
/* |
* Call the page back-end allocator for more memory. |
* Call the page back-end allocator for more memory. |
* |
* |
Line 1057 pool_catchup(struct pool *pp) |
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Line 1116 pool_catchup(struct pool *pp) |
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* the pool descriptor? |
* the pool descriptor? |
*/ |
*/ |
simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
cp = (*pp->pr_alloc)(pp->pr_pagesz, 0, pp->pr_mtype); |
cp = (*pp->pr_alloc)(pp->pr_pagesz, PR_NOWAIT, pp->pr_mtype); |
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if (__predict_true(cp != NULL)) |
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ph = pool_alloc_item_header(pp, cp, PR_NOWAIT); |
simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
if (__predict_false(cp == NULL)) { |
if (__predict_false(cp == NULL || ph == NULL)) { |
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if (cp != NULL) |
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(*pp->pr_free)(cp, pp->pr_pagesz, pp->pr_mtype); |
error = ENOMEM; |
error = ENOMEM; |
break; |
break; |
} |
} |
if ((error = pool_prime_page(pp, cp, PR_NOWAIT)) != 0) { |
pool_prime_page(pp, cp, ph); |
(*pp->pr_free)(cp, pp->pr_pagesz, pp->pr_mtype); |
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break; |
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} |
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pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
} |
} |
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Line 1176 pool_page_free_nointr(void *v, unsigned |
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Line 1236 pool_page_free_nointr(void *v, unsigned |
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* Release all complete pages that have not been used recently. |
* Release all complete pages that have not been used recently. |
*/ |
*/ |
void |
void |
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#ifdef DIAGNOSTIC |
_pool_reclaim(struct pool *pp, const char *file, long line) |
_pool_reclaim(struct pool *pp, const char *file, long line) |
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#else |
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pool_reclaim(struct pool *pp) |
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#endif |
{ |
{ |
struct pool_item_header *ph, *phnext; |
struct pool_item_header *ph, *phnext; |
struct pool_cache *pc; |
struct pool_cache *pc; |
Line 1686 pool_cache_destruct_object(struct pool_c |
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Line 1750 pool_cache_destruct_object(struct pool_c |
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*/ |
*/ |
static void |
static void |
pool_cache_do_invalidate(struct pool_cache *pc, int free_groups, |
pool_cache_do_invalidate(struct pool_cache *pc, int free_groups, |
void (*putit)(struct pool *, void *, const char *, long)) |
void (*putit)(struct pool *, void *)) |
{ |
{ |
struct pool_cache_group *pcg, *npcg; |
struct pool_cache_group *pcg, *npcg; |
void *object; |
void *object; |
Line 1701 pool_cache_do_invalidate(struct pool_cac |
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Line 1765 pool_cache_do_invalidate(struct pool_cac |
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pc->pc_allocfrom = NULL; |
pc->pc_allocfrom = NULL; |
if (pc->pc_dtor != NULL) |
if (pc->pc_dtor != NULL) |
(*pc->pc_dtor)(pc->pc_arg, object); |
(*pc->pc_dtor)(pc->pc_arg, object); |
(*putit)(pc->pc_pool, object, __FILE__, __LINE__); |
(*putit)(pc->pc_pool, object); |
} |
} |
if (free_groups) { |
if (free_groups) { |
pc->pc_ngroups--; |
pc->pc_ngroups--; |
Line 1724 pool_cache_invalidate(struct pool_cache |
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Line 1788 pool_cache_invalidate(struct pool_cache |
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{ |
{ |
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simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
pool_cache_do_invalidate(pc, 0, _pool_put); |
pool_cache_do_invalidate(pc, 0, pool_put); |
simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
} |
} |
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