version 1.53, 2001/05/10 01:37:40 |
version 1.60.2.1, 2002/01/10 20:00:01 |
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* POSSIBILITY OF SUCH DAMAGE. |
* POSSIBILITY OF SUCH DAMAGE. |
*/ |
*/ |
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#include <sys/cdefs.h> |
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__KERNEL_RCSID(0, "$NetBSD$"); |
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#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 |
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Line 73 TAILQ_HEAD(,pool) pool_head = TAILQ_HEAD |
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/* Private pool for page header structures */ |
/* Private pool for page header structures */ |
static struct pool phpool; |
static struct pool phpool; |
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#ifdef POOL_SUBPAGE |
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/* Pool of subpages for use by normal pools. */ |
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static struct pool psppool; |
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#endif |
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/* # 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; |
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Line 90 struct pool_item_header { |
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Line 98 struct pool_item_header { |
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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 */ |
}; |
}; |
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TAILQ_HEAD(pool_pagelist,pool_item_header); |
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struct pool_item { |
struct pool_item { |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
Line 148 struct pool_cache_group { |
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Line 157 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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#ifdef POOL_SUBPAGE |
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static void *pool_subpage_alloc(unsigned long, int, int); |
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static void pool_subpage_free(void *, unsigned long, int); |
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#endif |
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static void pool_print1(struct pool *, const char *, |
static void pool_print1(struct pool *, const char *, |
void (*)(const char *, ...)); |
void (*)(const char *, ...)); |
Line 174 struct pool_log { |
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Line 188 struct pool_log { |
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int pool_logsize = POOL_LOGSIZE; |
int pool_logsize = POOL_LOGSIZE; |
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#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 271 pr_enter_check(struct pool *pp, void (*p |
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Line 285 pr_enter_check(struct pool *pp, void (*p |
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#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 */ |
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/* |
/* |
* Return the pool page header based on page address. |
* Return the pool page header based on page address. |
Line 297 pr_find_pagehead(struct pool *pp, caddr_ |
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Line 311 pr_find_pagehead(struct pool *pp, caddr_ |
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* 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, |
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struct pool_pagelist *pq) |
{ |
{ |
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int s; |
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/* |
/* |
* If the page was idle, decrement the idle page count. |
* If the page was idle, decrement the idle page count. |
Line 316 pr_rmpage(struct pool *pp, struct pool_i |
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Line 332 pr_rmpage(struct pool *pp, struct pool_i |
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pp->pr_nitems -= pp->pr_itemsperpage; |
pp->pr_nitems -= pp->pr_itemsperpage; |
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/* |
/* |
* 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) { |
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TAILQ_INSERT_HEAD(pq, ph, ph_pagelist); |
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} else { |
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(*pp->pr_free)(ph->ph_page, pp->pr_pagesz, pp->pr_mtype); |
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if ((pp->pr_roflags & PR_PHINPAGE) == 0) { |
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LIST_REMOVE(ph, ph_hashlist); |
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s = splhigh(); |
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pool_put(&phpool, ph); |
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splx(s); |
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} |
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} |
pp->pr_npages--; |
pp->pr_npages--; |
pp->pr_npagefree++; |
pp->pr_npagefree++; |
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if ((pp->pr_roflags & PR_PHINPAGE) == 0) { |
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int s; |
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LIST_REMOVE(ph, ph_hashlist); |
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s = splhigh(); |
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pool_put(&phpool, ph); |
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splx(s); |
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} |
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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)) |
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if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
break; |
break; |
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Line 376 pool_init(struct pool *pp, size_t size, |
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Line 393 pool_init(struct pool *pp, size_t size, |
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panic("pool_init: page size invalid (%lx)\n", (u_long)pagesz); |
panic("pool_init: page size invalid (%lx)\n", (u_long)pagesz); |
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if (alloc == NULL && release == NULL) { |
if (alloc == NULL && release == NULL) { |
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#ifdef POOL_SUBPAGE |
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alloc = pool_subpage_alloc; |
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release = pool_subpage_free; |
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pagesz = POOL_SUBPAGE; |
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#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. */ |
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#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"); |
} |
} |
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#ifdef POOL_SUBPAGE |
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else if (alloc == pool_page_alloc_nointr && |
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release == pool_page_free_nointr) |
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pagesz = POOL_SUBPAGE; |
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#endif |
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if (pagesz == 0) |
if (pagesz == 0) |
pagesz = PAGE_SIZE; |
pagesz = PAGE_SIZE; |
Line 476 pool_init(struct pool *pp, size_t size, |
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Line 504 pool_init(struct pool *pp, size_t size, |
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pp->pr_hiwat = 0; |
pp->pr_hiwat = 0; |
pp->pr_nidle = 0; |
pp->pr_nidle = 0; |
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#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 484 pool_init(struct pool *pp, size_t size, |
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Line 513 pool_init(struct pool *pp, size_t size, |
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pp->pr_curlogentry = 0; |
pp->pr_curlogentry = 0; |
pp->pr_logsize = pool_logsize; |
pp->pr_logsize = pool_logsize; |
} |
} |
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#endif |
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pp->pr_entered_file = NULL; |
pp->pr_entered_file = NULL; |
pp->pr_entered_line = 0; |
pp->pr_entered_line = 0; |
Line 496 pool_init(struct pool *pp, size_t size, |
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Line 526 pool_init(struct pool *pp, size_t size, |
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* XXX LOCKING. |
* XXX LOCKING. |
*/ |
*/ |
if (phpool.pr_size == 0) { |
if (phpool.pr_size == 0) { |
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#ifdef POOL_SUBPAGE |
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pool_init(&phpool, sizeof(struct pool_item_header), 0, 0, 0, |
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"phpool", PAGE_SIZE, pool_page_alloc, pool_page_free, 0); |
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pool_init(&psppool, POOL_SUBPAGE, POOL_SUBPAGE, 0, |
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PR_RECURSIVE, "psppool", PAGE_SIZE, |
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pool_page_alloc, pool_page_free, 0); |
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#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); |
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#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 531 pool_destroy(struct pool *pp) |
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Line 569 pool_destroy(struct pool *pp) |
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/* 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); |
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/* 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; |
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} |
simple_unlock(&pool_head_slock); |
simple_unlock(&pool_head_slock); |
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#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); |
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#endif |
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if (pp->pr_roflags & PR_FREEHEADER) |
if (pp->pr_roflags & PR_FREEHEADER) |
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 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) |
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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 628 _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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#ifdef LOCKDEBUG |
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if (flags & PR_WAITOK) |
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simple_lock_only_held(NULL, "pool_get(PR_WAITOK)"); |
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#endif |
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#endif /* DIAGNOSTIC */ |
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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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Line 625 _pool_get(struct pool *pp, int flags, co |
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Line 693 _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 710 _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 757 _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 717 _pool_get(struct pool *pp, int flags, co |
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Line 778 _pool_get(struct pool *pp, int flags, co |
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panic("pool_get: nitems inconsistent\n"); |
panic("pool_get: nitems inconsistent\n"); |
} |
} |
#endif |
#endif |
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#ifdef POOL_DIAGNOSTIC |
pr_log(pp, v, PRLOG_GET, file, line); |
pr_log(pp, v, PRLOG_GET, file, line); |
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#endif |
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#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (__predict_false(pi->pi_magic != PI_MAGIC)) { |
if (__predict_false(pi->pi_magic != PI_MAGIC)) { |
Line 764 _pool_get(struct pool *pp, int flags, co |
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Line 828 _pool_get(struct pool *pp, int flags, co |
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*/ |
*/ |
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)) |
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if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
break; |
break; |
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Line 795 _pool_get(struct pool *pp, int flags, co |
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Line 858 _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; |
caddr_t page; |
caddr_t page; |
int s; |
int s; |
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LOCK_ASSERT(simple_lock_held(&pp->pr_slock)); |
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page = (caddr_t)((u_long)v & pp->pr_pagemask); |
page = (caddr_t)((u_long)v & pp->pr_pagemask); |
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#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
Line 812 pool_do_put(struct pool *pp, void *v, co |
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Line 877 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 877 pool_do_put(struct pool *pp, void *v, co |
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Line 940 pool_do_put(struct pool *pp, void *v, co |
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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 900 pool_do_put(struct pool *pp, void *v, co |
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Line 963 pool_do_put(struct pool *pp, void *v, co |
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* 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)) |
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if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
if (TAILQ_FIRST(&ph->ph_itemlist) != NULL) |
break; |
break; |
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Line 924 pool_do_put(struct pool *pp, void *v, co |
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Line 986 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 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 931 _pool_put(struct pool *pp, void *v, cons |
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Line 994 _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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#undef pool_put |
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#endif /* POOL_DIAGNOSTIC */ |
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void |
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pool_put(struct pool *pp, void *v) |
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{ |
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|
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simple_lock(&pp->pr_slock); |
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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. |
|
*/ |
|
int |
|
pool_prime(struct pool *pp, int n) |
|
{ |
|
struct pool_item_header *ph; |
|
caddr_t cp; |
|
int newpages, error = 0; |
|
|
|
simple_lock(&pp->pr_slock); |
|
|
|
newpages = roundup(n, pp->pr_itemsperpage) / pp->pr_itemsperpage; |
|
|
|
while (newpages-- > 0) { |
|
simple_unlock(&pp->pr_slock); |
|
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); |
|
|
|
if (__predict_false(cp == NULL || ph == NULL)) { |
|
error = ENOMEM; |
|
if (cp != NULL) |
|
(*pp->pr_free)(cp, pp->pr_pagesz, pp->pr_mtype); |
|
break; |
|
} |
|
|
|
pool_prime_page(pp, cp, ph); |
|
pp->pr_npagealloc++; |
|
pp->pr_minpages++; |
|
} |
|
|
|
if (pp->pr_minpages >= pp->pr_maxpages) |
|
pp->pr_maxpages = pp->pr_minpages + 1; /* XXX */ |
|
|
|
simple_unlock(&pp->pr_slock); |
|
return (0); |
|
} |
|
|
/* |
/* |
* 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; |
|
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 1016 pool_prime_page(struct pool *pp, caddr_t |
|
Line 1129 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); |
|
} |
} |
|
|
/* |
/* |
Line 1034 pool_prime_page(struct pool *pp, caddr_t |
|
Line 1145 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 1049 pool_catchup(struct pool *pp) |
|
Line 1161 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 1057 pool_catchup(struct pool *pp) |
|
Line 1169 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 1151 pool_page_free(void *v, unsigned long sz |
|
Line 1264 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 1170 pool_page_free_nointr(void *v, unsigned |
|
Line 1318 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 1189 _pool_reclaim(struct pool *pp, const cha |
|
Line 1343 _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 1222 _pool_reclaim(struct pool *pp, const cha |
|
Line 1376 _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 1242 pool_drain(void *arg) |
|
Line 1410 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 1357 pool_print1(struct pool *pp, const char |
|
Line 1524 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 1387 pool_print1(struct pool *pp, const char |
|
Line 1553 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 1414 pool_chk(struct pool *pp, const char *la |
|
Line 1578 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 1566 pool_cache_get(struct pool_cache *pc, in |
|
Line 1728 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 1634 pool_cache_put(struct pool_cache *pc, vo |
|
Line 1800 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 1686 pool_cache_destruct_object(struct pool_c |
|
Line 1854 pool_cache_destruct_object(struct pool_c |
|
*/ |
*/ |
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 1701 pool_cache_do_invalidate(struct pool_cac |
|
Line 1870 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 1724 pool_cache_invalidate(struct pool_cache |
|
Line 1895 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); |
} |
} |
|
|