| version 1.50, 2001/01/29 02:38:02 |
version 1.50.2.5, 2001/11/14 19:16:40 |
|
|
| * POSSIBILITY OF SUCH DAMAGE. |
* POSSIBILITY OF SUCH DAMAGE. |
| */ |
*/ |
| |
|
| |
#include <sys/cdefs.h> |
| |
__KERNEL_RCSID(0, "$NetBSD$"); |
| |
|
| #include "opt_pool.h" |
#include "opt_pool.h" |
| #include "opt_poollog.h" |
#include "opt_poollog.h" |
| #include "opt_lockdebug.h" |
#include "opt_lockdebug.h" |
| Line 70 TAILQ_HEAD(,pool) pool_head = TAILQ_HEAD |
|
| Line 73 TAILQ_HEAD(,pool) pool_head = TAILQ_HEAD |
|
| /* Private pool for page header structures */ |
/* Private pool for page header structures */ |
| static struct pool phpool; |
static struct pool phpool; |
| |
|
| |
#ifdef POOL_SUBPAGE |
| |
/* Pool of subpages for use by normal pools. */ |
| |
static struct pool psppool; |
| |
#endif |
| |
|
| /* # of seconds to retain page after last use */ |
/* # of seconds to retain page after last use */ |
| int pool_inactive_time = 10; |
int pool_inactive_time = 10; |
| |
|
| Line 90 struct pool_item_header { |
|
| Line 98 struct pool_item_header { |
|
| caddr_t ph_page; /* this page's address */ |
caddr_t ph_page; /* this page's address */ |
| struct timeval ph_time; /* last referenced */ |
struct timeval ph_time; /* last referenced */ |
| }; |
}; |
| |
TAILQ_HEAD(pool_pagelist,pool_item_header); |
| |
|
| struct pool_item { |
struct pool_item { |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| Line 103 struct pool_item { |
|
| Line 112 struct pool_item { |
|
| #define PR_HASH_INDEX(pp,addr) \ |
#define PR_HASH_INDEX(pp,addr) \ |
| (((u_long)(addr) >> (pp)->pr_pageshift) & (PR_HASHTABSIZE - 1)) |
(((u_long)(addr) >> (pp)->pr_pageshift) & (PR_HASHTABSIZE - 1)) |
| |
|
| |
#define POOL_NEEDS_CATCHUP(pp) \ |
| |
((pp)->pr_nitems < (pp)->pr_minitems) |
| |
|
| /* |
/* |
| * Pool cache management. |
* Pool cache management. |
| * |
* |
| Line 145 struct pool_cache_group { |
|
| Line 157 struct pool_cache_group { |
|
| static void pool_cache_reclaim(struct pool_cache *); |
static void pool_cache_reclaim(struct pool_cache *); |
| |
|
| 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, |
| |
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); |
| |
#ifdef POOL_SUBPAGE |
| |
static void *pool_subpage_alloc(unsigned long, int, int); |
| |
static void pool_subpage_free(void *, unsigned long, int); |
| |
#endif |
| |
|
| static void pool_print1(struct pool *, const char *, |
static void pool_print1(struct pool *, const char *, |
| void (*)(const char *, ...)); |
void (*)(const char *, ...)); |
| |
|
| /* |
/* |
| * Pool log entry. An array of these is allocated in pool_create(). |
* Pool log entry. An array of these is allocated in pool_init(). |
| */ |
*/ |
| struct pool_log { |
struct pool_log { |
| const char *pl_file; |
const char *pl_file; |
| Line 171 struct pool_log { |
|
| Line 188 struct pool_log { |
|
| |
|
| int pool_logsize = POOL_LOGSIZE; |
int pool_logsize = POOL_LOGSIZE; |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef POOL_DIAGNOSTIC |
| 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) |
| { |
{ |
| Line 268 pr_enter_check(struct pool *pp, void (*p |
|
| Line 285 pr_enter_check(struct pool *pp, void (*p |
|
| #define pr_enter(pp, file, line) |
#define pr_enter(pp, file, line) |
| #define pr_leave(pp) |
#define pr_leave(pp) |
| #define pr_enter_check(pp, pr) |
#define pr_enter_check(pp, pr) |
| #endif /* DIAGNOSTIC */ |
#endif /* POOL_DIAGNOSTIC */ |
| |
|
| /* |
/* |
| * Return the pool page header based on page address. |
* Return the pool page header based on page address. |
| Line 294 pr_find_pagehead(struct pool *pp, caddr_ |
|
| Line 311 pr_find_pagehead(struct pool *pp, caddr_ |
|
| * 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) |
| { |
{ |
| |
int s; |
| |
|
| /* |
/* |
| * If the page was idle, decrement the idle page count. |
* If the page was idle, decrement the idle page count. |
| Line 313 pr_rmpage(struct pool *pp, struct pool_i |
|
| Line 332 pr_rmpage(struct pool *pp, struct pool_i |
|
| pp->pr_nitems -= pp->pr_itemsperpage; |
pp->pr_nitems -= pp->pr_itemsperpage; |
| |
|
| /* |
/* |
| * Unlink a page from the pool and release it. |
* Unlink a page from the pool and release it (or queue it for release). |
| */ |
*/ |
| TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
| (*pp->pr_free)(ph->ph_page, pp->pr_pagesz, pp->pr_mtype); |
if (pq) { |
| |
TAILQ_INSERT_HEAD(pq, ph, ph_pagelist); |
| |
} else { |
| |
(*pp->pr_free)(ph->ph_page, pp->pr_pagesz, pp->pr_mtype); |
| |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) { |
| |
LIST_REMOVE(ph, ph_hashlist); |
| |
s = splhigh(); |
| |
pool_put(&phpool, ph); |
| |
splx(s); |
| |
} |
| |
} |
| pp->pr_npages--; |
pp->pr_npages--; |
| pp->pr_npagefree++; |
pp->pr_npagefree++; |
| |
|
| if ((pp->pr_roflags & PR_PHINPAGE) == 0) { |
|
| int s; |
|
| LIST_REMOVE(ph, ph_hashlist); |
|
| s = splhigh(); |
|
| pool_put(&phpool, ph); |
|
| splx(s); |
|
| } |
|
| |
|
| if (pp->pr_curpage == ph) { |
if (pp->pr_curpage == ph) { |
| /* |
/* |
| * Find a new non-empty page header, if any. |
* Find a new non-empty page header, if any. |
| * Start search from the page head, to increase the |
* Start search from the page head, to increase the |
| * chance for "high water" pages to be freed. |
* chance for "high water" pages to be freed. |
| */ |
*/ |
| for (ph = TAILQ_FIRST(&pp->pr_pagelist); ph != NULL; |
TAILQ_FOREACH(ph, &pp->pr_pagelist, ph_pagelist) |
| ph = TAILQ_NEXT(ph, ph_pagelist)) |
|
| if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
| break; |
break; |
| |
|
| Line 344 pr_rmpage(struct pool *pp, struct pool_i |
|
| Line 364 pr_rmpage(struct pool *pp, struct pool_i |
|
| } |
} |
| |
|
| /* |
/* |
| * Allocate and initialize a pool. |
|
| */ |
|
| struct pool * |
|
| pool_create(size_t size, u_int align, u_int ioff, int nitems, |
|
| const char *wchan, size_t pagesz, |
|
| void *(*alloc)(unsigned long, int, int), |
|
| void (*release)(void *, unsigned long, int), |
|
| int mtype) |
|
| { |
|
| struct pool *pp; |
|
| int flags; |
|
| |
|
| pp = (struct pool *)malloc(sizeof(*pp), M_POOL, M_NOWAIT); |
|
| if (pp == NULL) |
|
| return (NULL); |
|
| |
|
| flags = PR_FREEHEADER; |
|
| pool_init(pp, size, align, ioff, flags, wchan, pagesz, |
|
| alloc, release, mtype); |
|
| |
|
| if (nitems != 0) { |
|
| if (pool_prime(pp, nitems, NULL) != 0) { |
|
| pool_destroy(pp); |
|
| return (NULL); |
|
| } |
|
| } |
|
| |
|
| return (pp); |
|
| } |
|
| |
|
| /* |
|
| * Initialize the given pool resource structure. |
* Initialize the given pool resource structure. |
| * |
* |
| * We export this routine to allow other kernel parts to declare |
* We export this routine to allow other kernel parts to declare |
| Line 404 pool_init(struct pool *pp, size_t size, |
|
| Line 393 pool_init(struct pool *pp, size_t size, |
|
| panic("pool_init: page size invalid (%lx)\n", (u_long)pagesz); |
panic("pool_init: page size invalid (%lx)\n", (u_long)pagesz); |
| |
|
| if (alloc == NULL && release == NULL) { |
if (alloc == NULL && release == NULL) { |
| |
#ifdef POOL_SUBPAGE |
| |
alloc = pool_subpage_alloc; |
| |
release = pool_subpage_free; |
| |
pagesz = POOL_SUBPAGE; |
| |
#else |
| alloc = pool_page_alloc; |
alloc = pool_page_alloc; |
| release = pool_page_free; |
release = pool_page_free; |
| pagesz = PAGE_SIZE; /* Rounds to PAGE_SIZE anyhow. */ |
pagesz = PAGE_SIZE; /* Rounds to PAGE_SIZE anyhow. */ |
| |
#endif |
| } else if ((alloc != NULL && release != NULL) == 0) { |
} else if ((alloc != NULL && release != NULL) == 0) { |
| /* If you specifiy one, must specify both. */ |
/* If you specifiy one, must specify both. */ |
| panic("pool_init: must specify alloc and release together"); |
panic("pool_init: must specify alloc and release together"); |
| } |
} |
| |
#ifdef POOL_SUBPAGE |
| |
else if (alloc == pool_page_alloc_nointr && |
| |
release == pool_page_free_nointr) |
| |
pagesz = POOL_SUBPAGE; |
| |
#endif |
| |
|
| if (pagesz == 0) |
if (pagesz == 0) |
| pagesz = PAGE_SIZE; |
pagesz = PAGE_SIZE; |
| Line 504 pool_init(struct pool *pp, size_t size, |
|
| Line 504 pool_init(struct pool *pp, size_t size, |
|
| pp->pr_hiwat = 0; |
pp->pr_hiwat = 0; |
| pp->pr_nidle = 0; |
pp->pr_nidle = 0; |
| |
|
| |
#ifdef POOL_DIAGNOSTIC |
| if (flags & PR_LOGGING) { |
if (flags & PR_LOGGING) { |
| if (kmem_map == NULL || |
if (kmem_map == NULL || |
| (pp->pr_log = malloc(pool_logsize * sizeof(struct pool_log), |
(pp->pr_log = malloc(pool_logsize * sizeof(struct pool_log), |
| Line 512 pool_init(struct pool *pp, size_t size, |
|
| Line 513 pool_init(struct pool *pp, size_t size, |
|
| pp->pr_curlogentry = 0; |
pp->pr_curlogentry = 0; |
| pp->pr_logsize = pool_logsize; |
pp->pr_logsize = pool_logsize; |
| } |
} |
| |
#endif |
| |
|
| pp->pr_entered_file = NULL; |
pp->pr_entered_file = NULL; |
| pp->pr_entered_line = 0; |
pp->pr_entered_line = 0; |
| Line 524 pool_init(struct pool *pp, size_t size, |
|
| Line 526 pool_init(struct pool *pp, size_t size, |
|
| * XXX LOCKING. |
* XXX LOCKING. |
| */ |
*/ |
| if (phpool.pr_size == 0) { |
if (phpool.pr_size == 0) { |
| |
#ifdef POOL_SUBPAGE |
| |
pool_init(&phpool, sizeof(struct pool_item_header), 0, 0, 0, |
| |
"phpool", PAGE_SIZE, pool_page_alloc, pool_page_free, 0); |
| |
pool_init(&psppool, POOL_SUBPAGE, POOL_SUBPAGE, 0, |
| |
PR_RECURSIVE, "psppool", PAGE_SIZE, |
| |
pool_page_alloc, pool_page_free, 0); |
| |
#else |
| pool_init(&phpool, sizeof(struct pool_item_header), 0, 0, |
pool_init(&phpool, sizeof(struct pool_item_header), 0, 0, |
| 0, "phpool", 0, 0, 0, 0); |
0, "phpool", 0, 0, 0, 0); |
| |
#endif |
| pool_init(&pcgpool, sizeof(struct pool_cache_group), 0, 0, |
pool_init(&pcgpool, sizeof(struct pool_cache_group), 0, 0, |
| 0, "pcgpool", 0, 0, 0, 0); |
0, "pcgpool", 0, 0, 0, 0); |
| } |
} |
| Line 559 pool_destroy(struct pool *pp) |
|
| Line 569 pool_destroy(struct pool *pp) |
|
| |
|
| /* Remove all pages */ |
/* Remove all pages */ |
| if ((pp->pr_roflags & PR_STATIC) == 0) |
if ((pp->pr_roflags & PR_STATIC) == 0) |
| while ((ph = pp->pr_pagelist.tqh_first) != NULL) |
while ((ph = TAILQ_FIRST(&pp->pr_pagelist)) != NULL) |
| pr_rmpage(pp, ph); |
pr_rmpage(pp, ph, NULL); |
| |
|
| /* 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); |
TAILQ_REMOVE(&pool_head, pp, pr_poollist); |
| /* XXX Only clear this if we were drainpp? */ |
if (drainpp == pp) { |
| drainpp = NULL; |
drainpp = NULL; |
| |
} |
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| |
|
| |
#ifdef POOL_DIAGNOSTIC |
| if ((pp->pr_roflags & PR_LOGGING) != 0) |
if ((pp->pr_roflags & PR_LOGGING) != 0) |
| free(pp->pr_log, M_TEMP); |
free(pp->pr_log, M_TEMP); |
| |
#endif |
| |
|
| if (pp->pr_roflags & PR_FREEHEADER) |
if (pp->pr_roflags & PR_FREEHEADER) |
| free(pp, M_POOL); |
free(pp, M_POOL); |
| } |
} |
| |
|
| |
static __inline struct pool_item_header * |
| |
pool_alloc_item_header(struct pool *pp, caddr_t storage, int flags) |
| |
{ |
| |
struct pool_item_header *ph; |
| |
int s; |
| |
|
| |
LOCK_ASSERT(simple_lock_held(&pp->pr_slock) == 0); |
| |
|
| |
if ((pp->pr_roflags & PR_PHINPAGE) != 0) |
| |
ph = (struct pool_item_header *) (storage + pp->pr_phoffset); |
| |
else { |
| |
s = splhigh(); |
| |
ph = pool_get(&phpool, flags); |
| |
splx(s); |
| |
} |
| |
|
| |
return (ph); |
| |
} |
| |
|
| /* |
/* |
| * 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 * |
| |
#ifdef POOL_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) |
| |
#else |
| |
pool_get(struct pool *pp, int flags) |
| |
#endif |
| { |
{ |
| void *v; |
|
| struct pool_item *pi; |
struct pool_item *pi; |
| struct pool_item_header *ph; |
struct pool_item_header *ph; |
| |
void *v; |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| if (__predict_false((pp->pr_roflags & PR_STATIC) && |
if (__predict_false((pp->pr_roflags & PR_STATIC) && |
| Line 593 _pool_get(struct pool *pp, int flags, co |
|
| Line 628 _pool_get(struct pool *pp, int flags, co |
|
| pr_printlog(pp, NULL, printf); |
pr_printlog(pp, NULL, printf); |
| panic("pool_get: static"); |
panic("pool_get: static"); |
| } |
} |
| #endif |
|
| |
|
| 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"); |
| |
|
| |
#ifdef LOCKDEBUG |
| |
if (flags & PR_WAITOK) |
| |
simple_lock_only_held(NULL, "pool_get(PR_WAITOK)"); |
| |
#endif |
| |
#endif /* DIAGNOSTIC */ |
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
| |
|
| Line 653 _pool_get(struct pool *pp, int flags, co |
|
| Line 693 _pool_get(struct pool *pp, int flags, co |
|
| * 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; |
|
| |
|
| #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 672 _pool_get(struct pool *pp, int flags, co |
|
| Line 710 _pool_get(struct pool *pp, int flags, co |
|
| 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); |
| |
if (__predict_true(v != NULL)) |
| |
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); |
| |
|
| if (v == NULL) { |
if (__predict_false(v == NULL || ph == NULL)) { |
| |
if (v != NULL) |
| |
(*pp->pr_free)(v, pp->pr_pagesz, pp->pr_mtype); |
| |
|
| /* |
/* |
| * 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 714 _pool_get(struct pool *pp, int flags, co |
|
| Line 757 _pool_get(struct pool *pp, int flags, co |
|
| } |
} |
| |
|
| /* 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); |
| /* |
|
| * Probably, we don't allowed to wait and |
|
| * couldn't allocate a page header. |
|
| */ |
|
| (*pp->pr_free)(v, pp->pr_pagesz, pp->pr_mtype); |
|
| pp->pr_nfail++; |
|
| pr_leave(pp); |
|
| simple_unlock(&pp->pr_slock); |
|
| return (NULL); |
|
| } |
|
| pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
| |
|
| /* Start the allocation process over. */ |
/* Start the allocation process over. */ |
| Line 744 _pool_get(struct pool *pp, int flags, co |
|
| Line 777 _pool_get(struct pool *pp, int flags, co |
|
| 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 |
|
| pr_log(pp, v, PRLOG_GET, file, line); |
pr_log(pp, v, PRLOG_GET, file, line); |
| |
|
| #ifdef DIAGNOSTIC |
|
| 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 792 _pool_get(struct pool *pp, int flags, co |
|
| Line 824 _pool_get(struct pool *pp, int flags, co |
|
| */ |
*/ |
| TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
| TAILQ_INSERT_TAIL(&pp->pr_pagelist, ph, ph_pagelist); |
TAILQ_INSERT_TAIL(&pp->pr_pagelist, ph, ph_pagelist); |
| for (ph = TAILQ_FIRST(&pp->pr_pagelist); ph != NULL; |
TAILQ_FOREACH(ph, &pp->pr_pagelist, ph_pagelist) |
| ph = TAILQ_NEXT(ph, ph_pagelist)) |
|
| if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
| break; |
break; |
| |
|
| Line 806 _pool_get(struct pool *pp, int flags, co |
|
| Line 837 _pool_get(struct pool *pp, int flags, co |
|
| * 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 |
| * water mark, add more items to the pool. |
* water mark, add more items to the pool. |
| */ |
*/ |
| if (pp->pr_nitems < pp->pr_minitems && pool_catchup(pp) != 0) { |
if (POOL_NEEDS_CATCHUP(pp) && pool_catchup(pp) != 0) { |
| /* |
/* |
| * XXX: Should we log a warning? Should we set up a timeout |
* XXX: Should we log a warning? Should we set up a timeout |
| * to try again in a second or so? The latter could break |
* to try again in a second or so? The latter could break |
| Line 823 _pool_get(struct pool *pp, int flags, co |
|
| Line 854 _pool_get(struct pool *pp, int flags, co |
|
| * 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; |
| caddr_t page; |
caddr_t page; |
| int s; |
int s; |
| |
|
| |
LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
| |
|
| page = (caddr_t)((u_long)v & pp->pr_pagemask); |
page = (caddr_t)((u_long)v & pp->pr_pagemask); |
| |
|
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| Line 840 pool_do_put(struct pool *pp, void *v, co |
|
| Line 873 pool_do_put(struct pool *pp, void *v, co |
|
| } |
} |
| #endif |
#endif |
| |
|
| pr_log(pp, v, PRLOG_PUT, file, line); |
|
| |
|
| 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 905 pool_do_put(struct pool *pp, void *v, co |
|
| Line 936 pool_do_put(struct pool *pp, void *v, co |
|
| if (ph->ph_nmissing == 0) { |
if (ph->ph_nmissing == 0) { |
| pp->pr_nidle++; |
pp->pr_nidle++; |
| if (pp->pr_npages > pp->pr_maxpages) { |
if (pp->pr_npages > pp->pr_maxpages) { |
| pr_rmpage(pp, ph); |
pr_rmpage(pp, ph, NULL); |
| } else { |
} else { |
| TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
TAILQ_REMOVE(&pp->pr_pagelist, ph, ph_pagelist); |
| TAILQ_INSERT_TAIL(&pp->pr_pagelist, ph, ph_pagelist); |
TAILQ_INSERT_TAIL(&pp->pr_pagelist, ph, ph_pagelist); |
| Line 928 pool_do_put(struct pool *pp, void *v, co |
|
| Line 959 pool_do_put(struct pool *pp, void *v, co |
|
| * page with the fewest available items, to minimize |
* page with the fewest available items, to minimize |
| * fragmentation? |
* fragmentation? |
| */ |
*/ |
| for (ph = TAILQ_FIRST(&pp->pr_pagelist); ph != NULL; |
TAILQ_FOREACH(ph, &pp->pr_pagelist, ph_pagelist) |
| ph = TAILQ_NEXT(ph, ph_pagelist)) |
|
| if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
| break; |
break; |
| |
|
| Line 952 pool_do_put(struct pool *pp, void *v, co |
|
| Line 982 pool_do_put(struct pool *pp, void *v, co |
|
| /* |
/* |
| * Return resource to the pool; must be called at appropriate spl level |
* Return resource to the pool; must be called at appropriate spl level |
| */ |
*/ |
| |
#ifdef POOL_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 959 _pool_put(struct pool *pp, void *v, cons |
|
| Line 990 _pool_put(struct pool *pp, void *v, cons |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
| |
|
| pool_do_put(pp, v, file, line); |
pr_log(pp, v, PRLOG_PUT, file, line); |
| |
|
| |
pool_do_put(pp, v); |
| |
|
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| } |
} |
| |
#undef pool_put |
| |
#endif /* POOL_DIAGNOSTIC */ |
| |
|
| |
void |
| |
pool_put(struct pool *pp, void *v) |
| |
{ |
| |
|
| |
simple_lock(&pp->pr_slock); |
| |
|
| |
pool_do_put(pp, v); |
| |
|
| |
simple_unlock(&pp->pr_slock); |
| |
} |
| |
|
| |
#ifdef POOL_DIAGNOSTIC |
| |
#define pool_put(h, v) _pool_put((h), (v), __FILE__, __LINE__) |
| |
#endif |
| |
|
| /* |
/* |
| * Add N items to the pool. |
* Add N items to the pool. |
| */ |
*/ |
| int |
int |
| pool_prime(struct pool *pp, int n, caddr_t storage) |
pool_prime(struct pool *pp, int n) |
| { |
{ |
| |
struct pool_item_header *ph; |
| caddr_t cp; |
caddr_t cp; |
| int error, newnitems, newpages; |
int newpages, error = 0; |
| |
|
| #ifdef DIAGNOSTIC |
|
| if (__predict_false(storage && !(pp->pr_roflags & PR_STATIC))) |
|
| panic("pool_prime: static"); |
|
| /* !storage && static caught below */ |
|
| #endif |
|
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| |
|
| newnitems = pp->pr_minitems + n; |
newpages = roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
| newpages = |
|
| roundup(newnitems, pp->pr_itemsperpage) / pp->pr_itemsperpage |
|
| - pp->pr_minpages; |
|
| |
|
| while (newpages-- > 0) { |
while (newpages-- > 0) { |
| if (pp->pr_roflags & PR_STATIC) { |
simple_unlock(&pp->pr_slock); |
| cp = storage; |
cp = (*pp->pr_alloc)(pp->pr_pagesz, PR_NOWAIT, pp->pr_mtype); |
| storage += pp->pr_pagesz; |
if (__predict_true(cp != NULL)) |
| } else { |
ph = pool_alloc_item_header(pp, cp, PR_NOWAIT); |
| simple_unlock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| cp = (*pp->pr_alloc)(pp->pr_pagesz, 0, pp->pr_mtype); |
|
| simple_lock(&pp->pr_slock); |
|
| } |
|
| |
|
| if (cp == NULL) { |
if (__predict_false(cp == NULL || ph == NULL)) { |
| simple_unlock(&pp->pr_slock); |
error = ENOMEM; |
| return (ENOMEM); |
if (cp != NULL) |
| |
(*pp->pr_free)(cp, pp->pr_pagesz, pp->pr_mtype); |
| |
break; |
| } |
} |
| |
|
| if ((error = pool_prime_page(pp, cp, PR_NOWAIT)) != 0) { |
pool_prime_page(pp, cp, ph); |
| if ((pp->pr_roflags & PR_STATIC) == 0) |
|
| (*pp->pr_free)(cp, pp->pr_pagesz, |
|
| pp->pr_mtype); |
|
| simple_unlock(&pp->pr_slock); |
|
| return (error); |
|
| } |
|
| pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
| pp->pr_minpages++; |
pp->pr_minpages++; |
| } |
} |
| |
|
| pp->pr_minitems = newnitems; |
|
| |
|
| if (pp->pr_minpages >= pp->pr_maxpages) |
if (pp->pr_minpages >= pp->pr_maxpages) |
| pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
| |
|
| Line 1027 pool_prime(struct pool *pp, int n, caddr |
|
| Line 1060 pool_prime(struct pool *pp, int n, caddr |
|
| * |
* |
| * 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; |
|
| 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; |
| |
|
| 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); |
| |
|
| if ((pp->pr_roflags & PR_PHINPAGE) != 0) { |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
| ph = (struct pool_item_header *)(cp + pp->pr_phoffset); |
|
| } else { |
|
| s = splhigh(); |
|
| ph = pool_get(&phpool, flags); |
|
| splx(s); |
|
| if (ph == NULL) |
|
| return (ENOMEM); |
|
| 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); |
| } |
|
| |
|
| /* |
/* |
| * Insert page header. |
* Insert page header. |
| Line 1101 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1125 pool_prime_page(struct pool *pp, caddr_t |
|
| |
|
| 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; |
| |
|
| return (0); |
|
| } |
} |
| |
|
| /* |
/* |
| * Like pool_prime(), except this is used by pool_get() when nitems |
* Used by pool_get() when nitems drops below the low water mark. This |
| * drops below the low water mark. This is used to catch up nitmes |
* is used to catch up nitmes with the low water mark. |
| * with the low water mark. |
|
| * |
* |
| * Note 1, we never wait for memory here, we let the caller decide what to do. |
* Note 1, we never wait for memory here, we let the caller decide what to do. |
| * |
* |
| Line 1120 pool_prime_page(struct pool *pp, caddr_t |
|
| Line 1141 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; |
| caddr_t cp; |
caddr_t cp; |
| int error = 0; |
int error = 0; |
| |
|
| Line 1135 pool_catchup(struct pool *pp) |
|
| Line 1157 pool_catchup(struct pool *pp) |
|
| return (0); |
return (0); |
| } |
} |
| |
|
| 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 1143 pool_catchup(struct pool *pp) |
|
| Line 1165 pool_catchup(struct pool *pp) |
|
| * 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); |
| |
if (__predict_true(cp != NULL)) |
| |
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)) { |
| |
if (cp != NULL) |
| |
(*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); |
|
| break; |
|
| } |
|
| pp->pr_npagealloc++; |
pp->pr_npagealloc++; |
| } |
} |
| |
|
| Line 1172 pool_setlowat(struct pool *pp, int n) |
|
| Line 1195 pool_setlowat(struct pool *pp, int n) |
|
| : roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
: roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
| |
|
| /* Make sure we're caught up with the newly-set low water mark. */ |
/* Make sure we're caught up with the newly-set low water mark. */ |
| if ((pp->pr_nitems < pp->pr_minitems) && |
if (POOL_NEEDS_CATCHUP(pp) && (error = pool_catchup(pp) != 0)) { |
| (error = pool_catchup(pp)) != 0) { |
|
| /* |
/* |
| * XXX: Should we log a warning? Should we set up a timeout |
* XXX: Should we log a warning? Should we set up a timeout |
| * to try again in a second or so? The latter could break |
* to try again in a second or so? The latter could break |
| Line 1238 pool_page_free(void *v, unsigned long sz |
|
| Line 1260 pool_page_free(void *v, unsigned long sz |
|
| uvm_km_free_poolpage((vaddr_t)v); |
uvm_km_free_poolpage((vaddr_t)v); |
| } |
} |
| |
|
| |
#ifdef POOL_SUBPAGE |
| |
/* |
| |
* Sub-page allocator, for machines with large hardware pages. |
| |
*/ |
| |
static void * |
| |
pool_subpage_alloc(unsigned long sz, int flags, int mtype) |
| |
{ |
| |
|
| |
return pool_get(&psppool, flags); |
| |
} |
| |
|
| |
static void |
| |
pool_subpage_free(void *v, unsigned long sz, int mtype) |
| |
{ |
| |
|
| |
pool_put(&psppool, v); |
| |
} |
| |
#endif |
| |
|
| |
#ifdef POOL_SUBPAGE |
| |
/* We don't provide a real nointr allocator. Maybe later. */ |
| |
void * |
| |
pool_page_alloc_nointr(unsigned long sz, int flags, int mtype) |
| |
{ |
| |
|
| |
return pool_subpage_alloc(sz, flags, mtype); |
| |
} |
| |
|
| |
void |
| |
pool_page_free_nointr(void *v, unsigned long sz, int mtype) |
| |
{ |
| |
|
| |
pool_subpage_free(v, sz, mtype); |
| |
} |
| |
#else |
| /* |
/* |
| * Alternate pool page allocator for pools that know they will |
* Alternate pool page allocator for pools that know they will |
| * never be accessed in interrupt context. |
* never be accessed in interrupt context. |
| Line 1257 pool_page_free_nointr(void *v, unsigned |
|
| Line 1314 pool_page_free_nointr(void *v, unsigned |
|
| |
|
| uvm_km_free_poolpage1(kernel_map, (vaddr_t)v); |
uvm_km_free_poolpage1(kernel_map, (vaddr_t)v); |
| } |
} |
| |
#endif |
| |
|
| |
|
| /* |
/* |
| * Release all complete pages that have not been used recently. |
* Release all complete pages that have not been used recently. |
| */ |
*/ |
| void |
void |
| |
#ifdef POOL_DIAGNOSTIC |
| _pool_reclaim(struct pool *pp, const char *file, long line) |
_pool_reclaim(struct pool *pp, const char *file, long line) |
| |
#else |
| |
pool_reclaim(struct pool *pp) |
| |
#endif |
| { |
{ |
| struct pool_item_header *ph, *phnext; |
struct pool_item_header *ph, *phnext; |
| struct pool_cache *pc; |
struct pool_cache *pc; |
| struct timeval curtime; |
struct timeval curtime; |
| |
struct pool_pagelist pq; |
| int s; |
int s; |
| |
|
| if (pp->pr_roflags & PR_STATIC) |
if (pp->pr_roflags & PR_STATIC) |
| Line 1276 _pool_reclaim(struct pool *pp, const cha |
|
| Line 1339 _pool_reclaim(struct pool *pp, const cha |
|
| if (simple_lock_try(&pp->pr_slock) == 0) |
if (simple_lock_try(&pp->pr_slock) == 0) |
| return; |
return; |
| pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
| |
TAILQ_INIT(&pq); |
| |
|
| /* |
/* |
| * Reclaim items from the pool's caches. |
* Reclaim items from the pool's caches. |
| */ |
*/ |
| for (pc = TAILQ_FIRST(&pp->pr_cachelist); pc != NULL; |
TAILQ_FOREACH(pc, &pp->pr_cachelist, pc_poollist) |
| pc = TAILQ_NEXT(pc, pc_poollist)) |
|
| pool_cache_reclaim(pc); |
pool_cache_reclaim(pc); |
| |
|
| s = splclock(); |
s = splclock(); |
| Line 1309 _pool_reclaim(struct pool *pp, const cha |
|
| Line 1372 _pool_reclaim(struct pool *pp, const cha |
|
| pp->pr_minitems) |
pp->pr_minitems) |
| break; |
break; |
| |
|
| pr_rmpage(pp, ph); |
pr_rmpage(pp, ph, &pq); |
| } |
} |
| } |
} |
| |
|
| pr_leave(pp); |
pr_leave(pp); |
| simple_unlock(&pp->pr_slock); |
simple_unlock(&pp->pr_slock); |
| |
if (TAILQ_EMPTY(&pq)) { |
| |
return; |
| |
} |
| |
while ((ph = TAILQ_FIRST(&pq)) != NULL) { |
| |
TAILQ_REMOVE(&pq, ph, ph_pagelist); |
| |
(*pp->pr_free)(ph->ph_page, pp->pr_pagesz, pp->pr_mtype); |
| |
if (pp->pr_roflags & PR_PHINPAGE) { |
| |
continue; |
| |
} |
| |
LIST_REMOVE(ph, ph_hashlist); |
| |
s = splhigh(); |
| |
pool_put(&phpool, ph); |
| |
splx(s); |
| |
} |
| } |
} |
| |
|
| |
|
| Line 1329 pool_drain(void *arg) |
|
| Line 1406 pool_drain(void *arg) |
|
| struct pool *pp; |
struct pool *pp; |
| int s; |
int s; |
| |
|
| |
pp = NULL; |
| 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)) == NULL) |
drainpp = TAILQ_FIRST(&pool_head); |
| goto out; |
} |
| |
if (drainpp) { |
| pp = drainpp; |
pp = drainpp; |
| drainpp = TAILQ_NEXT(pp, pr_poollist); |
drainpp = TAILQ_NEXT(pp, pr_poollist); |
| |
} |
| pool_reclaim(pp); |
|
| |
|
| out: |
|
| simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
| |
pool_reclaim(pp); |
| splx(s); |
splx(s); |
| } |
} |
| |
|
| Line 1444 pool_print1(struct pool *pp, const char |
|
| Line 1520 pool_print1(struct pool *pp, const char |
|
| (u_long)ph->ph_time.tv_sec, |
(u_long)ph->ph_time.tv_sec, |
| (u_long)ph->ph_time.tv_usec); |
(u_long)ph->ph_time.tv_usec); |
| #ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
| for (pi = TAILQ_FIRST(&ph->ph_itemlist); pi != NULL; |
TAILQ_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
| pi = TAILQ_NEXT(pi, 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 1474 pool_print1(struct pool *pp, const char |
|
| Line 1549 pool_print1(struct pool *pp, const char |
|
| if (print_cache == 0) |
if (print_cache == 0) |
| goto skip_cache; |
goto skip_cache; |
| |
|
| for (pc = TAILQ_FIRST(&pp->pr_cachelist); pc != NULL; |
TAILQ_FOREACH(pc, &pp->pr_cachelist, pc_poollist) { |
| pc = TAILQ_NEXT(pc, pc_poollist)) { |
|
| (*pr)("\tcache %p: allocfrom %p freeto %p\n", pc, |
(*pr)("\tcache %p: allocfrom %p freeto %p\n", pc, |
| pc->pc_allocfrom, pc->pc_freeto); |
pc->pc_allocfrom, pc->pc_freeto); |
| (*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); |
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
| pcg = TAILQ_NEXT(pcg, pcg_list)) { |
|
| (*pr)("\t\tgroup %p: avail %d\n", pcg, pcg->pcg_avail); |
(*pr)("\t\tgroup %p: avail %d\n", pcg, pcg->pcg_avail); |
| for (i = 0; i < PCG_NOBJECTS; i++) |
for (i = 0; i < PCG_NOBJECTS; i++) |
| (*pr)("\t\t\t%p\n", pcg->pcg_objects[i]); |
(*pr)("\t\t\t%p\n", pcg->pcg_objects[i]); |
| Line 1501 pool_chk(struct pool *pp, const char *la |
|
| Line 1574 pool_chk(struct pool *pp, const char *la |
|
| |
|
| simple_lock(&pp->pr_slock); |
simple_lock(&pp->pr_slock); |
| |
|
| for (ph = TAILQ_FIRST(&pp->pr_pagelist); ph != NULL; |
TAILQ_FOREACH(ph, &pp->pr_pagelist, ph_pagelist) { |
| ph = TAILQ_NEXT(ph, ph_pagelist)) { |
|
| |
|
| struct pool_item *pi; |
struct pool_item *pi; |
| int n; |
int n; |
| caddr_t page; |
caddr_t page; |
| Line 1653 pool_cache_get(struct pool_cache *pc, in |
|
| Line 1724 pool_cache_get(struct pool_cache *pc, in |
|
| struct pool_cache_group *pcg; |
struct pool_cache_group *pcg; |
| void *object; |
void *object; |
| |
|
| |
#ifdef LOCKDEBUG |
| |
if (flags & PR_WAITOK) |
| |
simple_lock_only_held(NULL, "pool_cache_get(PR_WAITOK)"); |
| |
#endif |
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| |
|
| if ((pcg = pc->pc_allocfrom) == NULL) { |
if ((pcg = pc->pc_allocfrom) == NULL) { |
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
| pcg = TAILQ_NEXT(pcg, pcg_list)) { |
|
| if (pcg->pcg_avail != 0) { |
if (pcg->pcg_avail != 0) { |
| pc->pc_allocfrom = pcg; |
pc->pc_allocfrom = pcg; |
| goto have_group; |
goto have_group; |
|
|
| pool_cache_put(struct pool_cache *pc, void *object) |
pool_cache_put(struct pool_cache *pc, void *object) |
| { |
{ |
| struct pool_cache_group *pcg; |
struct pool_cache_group *pcg; |
| |
int s; |
| |
|
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| |
|
| if ((pcg = pc->pc_freeto) == NULL) { |
if ((pcg = pc->pc_freeto) == NULL) { |
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
TAILQ_FOREACH(pcg, &pc->pc_grouplist, pcg_list) { |
| pcg = TAILQ_NEXT(pcg, pcg_list)) { |
|
| if (pcg->pcg_avail != PCG_NOBJECTS) { |
if (pcg->pcg_avail != PCG_NOBJECTS) { |
| pc->pc_freeto = pcg; |
pc->pc_freeto = pcg; |
| goto have_group; |
goto have_group; |
| Line 1721 pool_cache_put(struct pool_cache *pc, vo |
|
| Line 1796 pool_cache_put(struct pool_cache *pc, vo |
|
| * allocate one. |
* allocate one. |
| */ |
*/ |
| simple_unlock(&pc->pc_slock); |
simple_unlock(&pc->pc_slock); |
| |
s = splvm(); |
| pcg = pool_get(&pcgpool, PR_NOWAIT); |
pcg = pool_get(&pcgpool, PR_NOWAIT); |
| |
splx(s); |
| if (pcg != NULL) { |
if (pcg != NULL) { |
| memset(pcg, 0, sizeof(*pcg)); |
memset(pcg, 0, sizeof(*pcg)); |
| simple_lock(&pc->pc_slock); |
simple_lock(&pc->pc_slock); |
| Line 1736 pool_cache_put(struct pool_cache *pc, vo |
|
| Line 1813 pool_cache_put(struct pool_cache *pc, vo |
|
| * 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. |
| */ |
*/ |
| if (pc->pc_dtor != NULL) |
pool_cache_destruct_object(pc, object); |
| (*pc->pc_dtor)(pc->pc_arg, object); |
|
| pool_put(pc->pc_pool, object); |
|
| return; |
return; |
| } |
} |
| |
|
| Line 1753 pool_cache_put(struct pool_cache *pc, vo |
|
| Line 1828 pool_cache_put(struct pool_cache *pc, vo |
|
| } |
} |
| |
|
| /* |
/* |
| |
* pool_cache_destruct_object: |
| |
* |
| |
* Force destruction of an object and its release back into |
| |
* the pool. |
| |
*/ |
| |
void |
| |
pool_cache_destruct_object(struct pool_cache *pc, void *object) |
| |
{ |
| |
|
| |
if (pc->pc_dtor != NULL) |
| |
(*pc->pc_dtor)(pc->pc_arg, object); |
| |
pool_put(pc->pc_pool, object); |
| |
} |
| |
|
| |
/* |
| * pool_cache_do_invalidate: |
* pool_cache_do_invalidate: |
| * |
* |
| * This internal function implements pool_cache_invalidate() and |
* This internal function implements pool_cache_invalidate() and |
| Line 1760 pool_cache_put(struct pool_cache *pc, vo |
|
| Line 1850 pool_cache_put(struct pool_cache *pc, vo |
|
| */ |
*/ |
| 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; |
| |
int s; |
| |
|
| for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
for (pcg = TAILQ_FIRST(&pc->pc_grouplist); pcg != NULL; |
| pcg = npcg) { |
pcg = npcg) { |
| Line 1775 pool_cache_do_invalidate(struct pool_cac |
|
| Line 1866 pool_cache_do_invalidate(struct pool_cac |
|
| 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--; |
| TAILQ_REMOVE(&pc->pc_grouplist, pcg, pcg_list); |
TAILQ_REMOVE(&pc->pc_grouplist, pcg, pcg_list); |
| if (pc->pc_freeto == pcg) |
if (pc->pc_freeto == pcg) |
| pc->pc_freeto = NULL; |
pc->pc_freeto = NULL; |
| |
s = splvm(); |
| pool_put(&pcgpool, pcg); |
pool_put(&pcgpool, pcg); |
| |
splx(s); |
| } |
} |
| } |
} |
| } |
} |
| Line 1798 pool_cache_invalidate(struct pool_cache |
|
| Line 1891 pool_cache_invalidate(struct pool_cache |
|
| { |
{ |
| |
|
| 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); |
| } |
} |
| |
|