version 1.137.2.1, 2007/12/08 17:57:46 |
version 1.187, 2011/01/17 07:13:32 |
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/* $NetBSD$ */ |
/* $NetBSD$ */ |
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/*- |
/*- |
* Copyright (c) 1997, 1999, 2000, 2002, 2007 The NetBSD Foundation, Inc. |
* Copyright (c) 1997, 1999, 2000, 2002, 2007, 2008, 2010 |
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* The NetBSD Foundation, Inc. |
* All rights reserved. |
* All rights reserved. |
* |
* |
* This code is derived from software contributed to The NetBSD Foundation |
* This code is derived from software contributed to The NetBSD Foundation |
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* 2. Redistributions in binary form must reproduce the above copyright |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the NetBSD |
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* Foundation, Inc. and its contributors. |
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* 4. Neither the name of The NetBSD Foundation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
* |
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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#include <sys/cdefs.h> |
#include <sys/cdefs.h> |
__KERNEL_RCSID(0, "$NetBSD$"); |
__KERNEL_RCSID(0, "$NetBSD$"); |
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#include "opt_ddb.h" |
#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 51 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 46 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <sys/errno.h> |
#include <sys/errno.h> |
#include <sys/kernel.h> |
#include <sys/kernel.h> |
#include <sys/malloc.h> |
#include <sys/malloc.h> |
#include <sys/lock.h> |
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#include <sys/pool.h> |
#include <sys/pool.h> |
#include <sys/syslog.h> |
#include <sys/syslog.h> |
#include <sys/debug.h> |
#include <sys/debug.h> |
#include <sys/lockdebug.h> |
#include <sys/lockdebug.h> |
#include <sys/xcall.h> |
#include <sys/xcall.h> |
#include <sys/cpu.h> |
#include <sys/cpu.h> |
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#include <sys/atomic.h> |
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#include <uvm/uvm.h> |
#include <uvm/uvm_extern.h> |
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/* |
/* |
* Pool resource management utility. |
* Pool resource management utility. |
Line 75 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 70 __KERNEL_RCSID(0, "$NetBSD$"); |
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*/ |
*/ |
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/* List of all pools */ |
/* List of all pools */ |
LIST_HEAD(,pool) pool_head = LIST_HEAD_INITIALIZER(pool_head); |
static TAILQ_HEAD(, pool) pool_head = TAILQ_HEAD_INITIALIZER(pool_head); |
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/* List of all caches. */ |
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LIST_HEAD(,pool_cache) pool_cache_head = |
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LIST_HEAD_INITIALIZER(pool_cache_head); |
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/* Private pool for page header structures */ |
/* Private pool for page header structures */ |
#define PHPOOL_MAX 8 |
#define PHPOOL_MAX 8 |
Line 114 static struct pool *drainpp; |
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Line 105 static struct pool *drainpp; |
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static kmutex_t pool_head_lock; |
static kmutex_t pool_head_lock; |
static kcondvar_t pool_busy; |
static kcondvar_t pool_busy; |
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/* This lock protects initialization of a potentially shared pool allocator */ |
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static kmutex_t pool_allocator_lock; |
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typedef uint32_t pool_item_bitmap_t; |
typedef uint32_t pool_item_bitmap_t; |
#define BITMAP_SIZE (CHAR_BIT * sizeof(pool_item_bitmap_t)) |
#define BITMAP_SIZE (CHAR_BIT * sizeof(pool_item_bitmap_t)) |
#define BITMAP_MASK (BITMAP_SIZE - 1) |
#define BITMAP_MASK (BITMAP_SIZE - 1) |
Line 125 struct pool_item_header { |
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Line 119 struct pool_item_header { |
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SPLAY_ENTRY(pool_item_header) |
SPLAY_ENTRY(pool_item_header) |
ph_node; /* Off-page page headers */ |
ph_node; /* Off-page page headers */ |
void * ph_page; /* this page's address */ |
void * ph_page; /* this page's address */ |
struct timeval ph_time; /* last referenced */ |
uint32_t ph_time; /* last referenced */ |
uint16_t ph_nmissing; /* # of chunks in use */ |
uint16_t ph_nmissing; /* # of chunks in use */ |
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uint16_t ph_off; /* start offset in page */ |
union { |
union { |
/* !PR_NOTOUCH */ |
/* !PR_NOTOUCH */ |
struct { |
struct { |
Line 135 struct pool_item_header { |
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Line 130 struct pool_item_header { |
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} phu_normal; |
} phu_normal; |
/* PR_NOTOUCH */ |
/* PR_NOTOUCH */ |
struct { |
struct { |
uint16_t phu_off; /* start offset in page */ |
pool_item_bitmap_t phu_bitmap[1]; |
pool_item_bitmap_t phu_bitmap[]; |
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} phu_notouch; |
} phu_notouch; |
} ph_u; |
} ph_u; |
}; |
}; |
#define ph_itemlist ph_u.phu_normal.phu_itemlist |
#define ph_itemlist ph_u.phu_normal.phu_itemlist |
#define ph_off ph_u.phu_notouch.phu_off |
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#define ph_bitmap ph_u.phu_notouch.phu_bitmap |
#define ph_bitmap ph_u.phu_notouch.phu_bitmap |
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struct pool_item { |
struct pool_item { |
Line 181 struct pool_item { |
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Line 174 struct pool_item { |
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* from it. |
* from it. |
*/ |
*/ |
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static struct pool pcgpool; |
static struct pool pcg_normal_pool; |
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static struct pool pcg_large_pool; |
static struct pool cache_pool; |
static struct pool cache_pool; |
static struct pool cache_cpu_pool; |
static struct pool cache_cpu_pool; |
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static pool_cache_cpu_t *pool_cache_put_slow(pool_cache_cpu_t *, int *, |
/* List of all caches. */ |
void *, paddr_t); |
TAILQ_HEAD(,pool_cache) pool_cache_head = |
static pool_cache_cpu_t *pool_cache_get_slow(pool_cache_cpu_t *, int *, |
TAILQ_HEAD_INITIALIZER(pool_cache_head); |
void **, paddr_t *, int); |
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int pool_cache_disable; /* global disable for caching */ |
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static const pcg_t pcg_dummy; /* zero sized: always empty, yet always full */ |
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static bool pool_cache_put_slow(pool_cache_cpu_t *, int, |
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void *); |
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static bool pool_cache_get_slow(pool_cache_cpu_t *, int, |
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void **, paddr_t *, int); |
static void pool_cache_cpu_init1(struct cpu_info *, pool_cache_t); |
static void pool_cache_cpu_init1(struct cpu_info *, pool_cache_t); |
static void pool_cache_invalidate_groups(pool_cache_t, pcg_t *); |
static void pool_cache_invalidate_groups(pool_cache_t, pcg_t *); |
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static void pool_cache_invalidate_cpu(pool_cache_t, u_int); |
static void pool_cache_xcall(pool_cache_t); |
static void pool_cache_xcall(pool_cache_t); |
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static int pool_catchup(struct pool *); |
static int pool_catchup(struct pool *); |
Line 233 int pool_logsize = POOL_LOGSIZE; |
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Line 235 int pool_logsize = POOL_LOGSIZE; |
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static inline void |
static inline void |
pr_log(struct pool *pp, void *v, int action, const char *file, long line) |
pr_log(struct pool *pp, void *v, int action, const char *file, long line) |
{ |
{ |
int n = pp->pr_curlogentry; |
int n; |
struct pool_log *pl; |
struct pool_log *pl; |
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if ((pp->pr_roflags & PR_LOGGING) == 0) |
if ((pp->pr_roflags & PR_LOGGING) == 0) |
return; |
return; |
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if (pp->pr_log == NULL) { |
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if (kmem_map != NULL) |
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pp->pr_log = malloc( |
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pool_logsize * sizeof(struct pool_log), |
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M_TEMP, M_NOWAIT | M_ZERO); |
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if (pp->pr_log == NULL) |
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return; |
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pp->pr_curlogentry = 0; |
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pp->pr_logsize = pool_logsize; |
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} |
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/* |
/* |
* Fill in the current entry. Wrap around and overwrite |
* Fill in the current entry. Wrap around and overwrite |
* the oldest entry if necessary. |
* the oldest entry if necessary. |
*/ |
*/ |
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n = pp->pr_curlogentry; |
pl = &pp->pr_log[n]; |
pl = &pp->pr_log[n]; |
pl->pl_file = file; |
pl->pl_file = file; |
pl->pl_line = line; |
pl->pl_line = line; |
Line 260 pr_printlog(struct pool *pp, struct pool |
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Line 274 pr_printlog(struct pool *pp, struct pool |
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int i = pp->pr_logsize; |
int i = pp->pr_logsize; |
int n = pp->pr_curlogentry; |
int n = pp->pr_curlogentry; |
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if ((pp->pr_roflags & PR_LOGGING) == 0) |
if (pp->pr_log == NULL) |
return; |
return; |
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/* |
/* |
Line 412 phtree_compare(struct pool_item_header * |
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Line 426 phtree_compare(struct pool_item_header * |
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SPLAY_PROTOTYPE(phtree, pool_item_header, ph_node, phtree_compare); |
SPLAY_PROTOTYPE(phtree, pool_item_header, ph_node, phtree_compare); |
SPLAY_GENERATE(phtree, pool_item_header, ph_node, phtree_compare); |
SPLAY_GENERATE(phtree, pool_item_header, ph_node, phtree_compare); |
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static inline struct pool_item_header * |
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pr_find_pagehead_noalign(struct pool *pp, void *v) |
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{ |
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struct pool_item_header *ph, tmp; |
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tmp.ph_page = (void *)(uintptr_t)v; |
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ph = SPLAY_FIND(phtree, &pp->pr_phtree, &tmp); |
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if (ph == NULL) { |
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ph = SPLAY_ROOT(&pp->pr_phtree); |
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if (ph != NULL && phtree_compare(&tmp, ph) >= 0) { |
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ph = SPLAY_NEXT(phtree, &pp->pr_phtree, ph); |
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} |
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KASSERT(ph == NULL || phtree_compare(&tmp, ph) < 0); |
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} |
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return ph; |
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} |
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/* |
/* |
* Return the pool page header based on item address. |
* Return the pool page header based on item address. |
*/ |
*/ |
Line 421 pr_find_pagehead(struct pool *pp, void * |
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Line 453 pr_find_pagehead(struct pool *pp, void * |
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struct pool_item_header *ph, tmp; |
struct pool_item_header *ph, tmp; |
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if ((pp->pr_roflags & PR_NOALIGN) != 0) { |
if ((pp->pr_roflags & PR_NOALIGN) != 0) { |
tmp.ph_page = (void *)(uintptr_t)v; |
ph = pr_find_pagehead_noalign(pp, v); |
ph = SPLAY_FIND(phtree, &pp->pr_phtree, &tmp); |
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if (ph == NULL) { |
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ph = SPLAY_ROOT(&pp->pr_phtree); |
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if (ph != NULL && phtree_compare(&tmp, ph) >= 0) { |
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ph = SPLAY_NEXT(phtree, &pp->pr_phtree, ph); |
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} |
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KASSERT(ph == NULL || phtree_compare(&tmp, ph) < 0); |
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} |
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} else { |
} else { |
void *page = |
void *page = |
(void *)((uintptr_t)v & pp->pr_alloc->pa_pagemask); |
(void *)((uintptr_t)v & pp->pr_alloc->pa_pagemask); |
Line 538 pool_reclaim_register(struct pool *pp) |
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Line 562 pool_reclaim_register(struct pool *pp) |
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callback_register(&vm_map_to_kernel(map)->vmk_reclaim_callback, |
callback_register(&vm_map_to_kernel(map)->vmk_reclaim_callback, |
&pp->pr_reclaimerentry, pp, pool_reclaim_callback); |
&pp->pr_reclaimerentry, pp, pool_reclaim_callback); |
splx(s); |
splx(s); |
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#ifdef DIAGNOSTIC |
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/* Diagnostic drain attempt. */ |
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uvm_km_va_drain(map, 0); |
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#endif |
} |
} |
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static void |
static void |
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pool_subsystem_init(void) |
pool_subsystem_init(void) |
{ |
{ |
struct pool_allocator *pa; |
struct pool_allocator *pa; |
__link_set_decl(pools, struct link_pool_init); |
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struct link_pool_init * const *pi; |
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mutex_init(&pool_head_lock, MUTEX_DEFAULT, IPL_NONE); |
mutex_init(&pool_head_lock, MUTEX_DEFAULT, IPL_NONE); |
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mutex_init(&pool_allocator_lock, MUTEX_DEFAULT, IPL_NONE); |
cv_init(&pool_busy, "poolbusy"); |
cv_init(&pool_busy, "poolbusy"); |
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__link_set_foreach(pi, pools) |
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pool_init((*pi)->pp, (*pi)->size, (*pi)->align, |
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(*pi)->align_offset, (*pi)->flags, (*pi)->wchan, |
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(*pi)->palloc, (*pi)->ipl); |
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while ((pa = SLIST_FIRST(&pa_deferinitq)) != NULL) { |
while ((pa = SLIST_FIRST(&pa_deferinitq)) != NULL) { |
KASSERT(pa->pa_backingmapptr != NULL); |
KASSERT(pa->pa_backingmapptr != NULL); |
KASSERT(*pa->pa_backingmapptr != NULL); |
KASSERT(*pa->pa_backingmapptr != NULL); |
Line 598 pool_subsystem_init(void) |
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Line 621 pool_subsystem_init(void) |
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pa_reclaim_register(pa); |
pa_reclaim_register(pa); |
} |
} |
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pool_init(&cache_pool, sizeof(struct pool_cache), CACHE_LINE_SIZE, |
pool_init(&cache_pool, sizeof(struct pool_cache), coherency_unit, |
0, 0, "pcache", &pool_allocator_nointr, IPL_NONE); |
0, 0, "pcache", &pool_allocator_nointr, IPL_NONE); |
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pool_init(&cache_cpu_pool, sizeof(pool_cache_cpu_t), CACHE_LINE_SIZE, |
pool_init(&cache_cpu_pool, sizeof(pool_cache_cpu_t), coherency_unit, |
0, 0, "pcachecpu", &pool_allocator_nointr, IPL_NONE); |
0, 0, "pcachecpu", &pool_allocator_nointr, IPL_NONE); |
} |
} |
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pool_init(struct pool *pp, size_t size, u_int align, u_int ioff, int flags, |
pool_init(struct pool *pp, size_t size, u_int align, u_int ioff, int flags, |
const char *wchan, struct pool_allocator *palloc, int ipl) |
const char *wchan, struct pool_allocator *palloc, int ipl) |
{ |
{ |
#ifdef DEBUG |
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struct pool *pp1; |
struct pool *pp1; |
#endif |
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size_t trysize, phsize; |
size_t trysize, phsize; |
int off, slack; |
int off, slack; |
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Line 626 pool_init(struct pool *pp, size_t size, |
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Line 647 pool_init(struct pool *pp, size_t size, |
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* Check that the pool hasn't already been initialised and |
* Check that the pool hasn't already been initialised and |
* added to the list of all pools. |
* added to the list of all pools. |
*/ |
*/ |
LIST_FOREACH(pp1, &pool_head, pr_poollist) { |
TAILQ_FOREACH(pp1, &pool_head, pr_poollist) { |
if (pp == pp1) |
if (pp == pp1) |
panic("pool_init: pool %s already initialised", |
panic("pool_init: pool %s already initialised", |
wchan); |
wchan); |
Line 651 pool_init(struct pool *pp, size_t size, |
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Line 672 pool_init(struct pool *pp, size_t size, |
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palloc = &pool_allocator_nointr_fullpage; |
palloc = &pool_allocator_nointr_fullpage; |
} |
} |
#endif /* POOL_SUBPAGE */ |
#endif /* POOL_SUBPAGE */ |
if ((palloc->pa_flags & PA_INITIALIZED) == 0) { |
if (!cold) |
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mutex_enter(&pool_allocator_lock); |
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if (palloc->pa_refcnt++ == 0) { |
if (palloc->pa_pagesz == 0) |
if (palloc->pa_pagesz == 0) |
palloc->pa_pagesz = PAGE_SIZE; |
palloc->pa_pagesz = PAGE_SIZE; |
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Line 664 pool_init(struct pool *pp, size_t size, |
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Line 687 pool_init(struct pool *pp, size_t size, |
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if (palloc->pa_backingmapptr != NULL) { |
if (palloc->pa_backingmapptr != NULL) { |
pa_reclaim_register(palloc); |
pa_reclaim_register(palloc); |
} |
} |
palloc->pa_flags |= PA_INITIALIZED; |
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} |
} |
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if (!cold) |
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mutex_exit(&pool_allocator_lock); |
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if (align == 0) |
if (align == 0) |
align = ALIGN(1); |
align = ALIGN(1); |
Line 788 pool_init(struct pool *pp, size_t size, |
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Line 812 pool_init(struct pool *pp, size_t size, |
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pp->pr_nidle = 0; |
pp->pr_nidle = 0; |
pp->pr_refcnt = 0; |
pp->pr_refcnt = 0; |
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#ifdef POOL_DIAGNOSTIC |
pp->pr_log = NULL; |
if (flags & PR_LOGGING) { |
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if (kmem_map == NULL || |
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(pp->pr_log = malloc(pool_logsize * sizeof(struct pool_log), |
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M_TEMP, M_NOWAIT)) == NULL) |
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pp->pr_roflags &= ~PR_LOGGING; |
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pp->pr_curlogentry = 0; |
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pp->pr_logsize = pool_logsize; |
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} |
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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; |
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/* |
mutex_init(&pp->pr_lock, MUTEX_DEFAULT, ipl); |
* XXXAD hack to prevent IP input processing from blocking. |
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*/ |
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if (ipl == IPL_SOFTNET) { |
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mutex_init(&pp->pr_lock, MUTEX_DEFAULT, IPL_VM); |
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} else { |
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mutex_init(&pp->pr_lock, MUTEX_DEFAULT, ipl); |
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} |
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cv_init(&pp->pr_cv, wchan); |
cv_init(&pp->pr_cv, wchan); |
pp->pr_ipl = ipl; |
pp->pr_ipl = ipl; |
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Line 840 pool_init(struct pool *pp, size_t size, |
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Line 848 pool_init(struct pool *pp, size_t size, |
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pool_init(&psppool, POOL_SUBPAGE, POOL_SUBPAGE, 0, |
pool_init(&psppool, POOL_SUBPAGE, POOL_SUBPAGE, 0, |
PR_RECURSIVE, "psppool", &pool_allocator_meta, IPL_VM); |
PR_RECURSIVE, "psppool", &pool_allocator_meta, IPL_VM); |
#endif |
#endif |
pool_init(&pcgpool, sizeof(pcg_t), CACHE_LINE_SIZE, 0, 0, |
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"cachegrp", &pool_allocator_meta, IPL_VM); |
size = sizeof(pcg_t) + |
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(PCG_NOBJECTS_NORMAL - 1) * sizeof(pcgpair_t); |
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pool_init(&pcg_normal_pool, size, coherency_unit, 0, 0, |
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"pcgnormal", &pool_allocator_meta, IPL_VM); |
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size = sizeof(pcg_t) + |
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(PCG_NOBJECTS_LARGE - 1) * sizeof(pcgpair_t); |
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pool_init(&pcg_large_pool, size, coherency_unit, 0, 0, |
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"pcglarge", &pool_allocator_meta, IPL_VM); |
} |
} |
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if (__predict_true(!cold)) { |
/* Insert into the list of all pools. */ |
/* Insert into the list of all pools. */ |
if (!cold) |
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
LIST_INSERT_HEAD(&pool_head, pp, pr_poollist); |
TAILQ_FOREACH(pp1, &pool_head, pr_poollist) { |
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if (strcmp(pp1->pr_wchan, pp->pr_wchan) > 0) |
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break; |
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} |
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if (pp1 == NULL) |
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TAILQ_INSERT_TAIL(&pool_head, pp, pr_poollist); |
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else |
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TAILQ_INSERT_BEFORE(pp1, pp, pr_poollist); |
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if (!cold) |
mutex_exit(&pool_head_lock); |
mutex_exit(&pool_head_lock); |
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/* Insert this into the list of pools using this allocator. */ |
/* Insert this into the list of pools using this allocator. */ |
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if (!cold) |
mutex_enter(&palloc->pa_lock); |
mutex_enter(&palloc->pa_lock); |
TAILQ_INSERT_TAIL(&palloc->pa_list, pp, pr_alloc_list); |
TAILQ_INSERT_TAIL(&palloc->pa_list, pp, pr_alloc_list); |
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if (!cold) |
mutex_exit(&palloc->pa_lock); |
mutex_exit(&palloc->pa_lock); |
} else { |
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LIST_INSERT_HEAD(&pool_head, pp, pr_poollist); |
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TAILQ_INSERT_TAIL(&palloc->pa_list, pp, pr_alloc_list); |
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} |
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pool_reclaim_register(pp); |
pool_reclaim_register(pp); |
} |
} |
Line 875 pool_destroy(struct pool *pp) |
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Line 897 pool_destroy(struct pool *pp) |
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mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
while (pp->pr_refcnt != 0) |
while (pp->pr_refcnt != 0) |
cv_wait(&pool_busy, &pool_head_lock); |
cv_wait(&pool_busy, &pool_head_lock); |
LIST_REMOVE(pp, pr_poollist); |
TAILQ_REMOVE(&pool_head, pp, pr_poollist); |
if (drainpp == pp) |
if (drainpp == pp) |
drainpp = NULL; |
drainpp = NULL; |
mutex_exit(&pool_head_lock); |
mutex_exit(&pool_head_lock); |
Line 886 pool_destroy(struct pool *pp) |
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Line 908 pool_destroy(struct pool *pp) |
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TAILQ_REMOVE(&pp->pr_alloc->pa_list, pp, pr_alloc_list); |
TAILQ_REMOVE(&pp->pr_alloc->pa_list, pp, pr_alloc_list); |
mutex_exit(&pp->pr_alloc->pa_lock); |
mutex_exit(&pp->pr_alloc->pa_lock); |
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mutex_enter(&pool_allocator_lock); |
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if (--pp->pr_alloc->pa_refcnt == 0) |
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mutex_destroy(&pp->pr_alloc->pa_lock); |
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mutex_exit(&pool_allocator_lock); |
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mutex_enter(&pp->pr_lock); |
mutex_enter(&pp->pr_lock); |
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KASSERT(pp->pr_cache == NULL); |
KASSERT(pp->pr_cache == NULL); |
Line 911 pool_destroy(struct pool *pp) |
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Line 938 pool_destroy(struct pool *pp) |
|
pr_pagelist_free(pp, &pq); |
pr_pagelist_free(pp, &pq); |
|
|
#ifdef POOL_DIAGNOSTIC |
#ifdef POOL_DIAGNOSTIC |
if ((pp->pr_roflags & PR_LOGGING) != 0) |
if (pp->pr_log != NULL) { |
free(pp->pr_log, M_TEMP); |
free(pp->pr_log, M_TEMP); |
|
pp->pr_log = NULL; |
|
} |
#endif |
#endif |
|
|
cv_destroy(&pp->pr_cv); |
cv_destroy(&pp->pr_cv); |
Line 960 pool_get(struct pool *pp, int flags) |
|
Line 989 pool_get(struct pool *pp, int flags) |
|
void *v; |
void *v; |
|
|
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (__predict_false(pp->pr_itemsperpage == 0)) |
if (pp->pr_itemsperpage == 0) |
panic("pool_get: pool %p: pr_itemsperpage is zero, " |
panic("pool_get: pool '%s': pr_itemsperpage is zero, " |
"pool not initialized?", pp); |
"pool not initialized?", pp->pr_wchan); |
if (__predict_false(curlwp == NULL && doing_shutdown == 0 && |
if ((cpu_intr_p() || cpu_softintr_p()) && pp->pr_ipl == IPL_NONE && |
(flags & PR_WAITOK) != 0)) |
!cold && panicstr == NULL) |
panic("pool_get: %s: must have NOWAIT", pp->pr_wchan); |
panic("pool '%s' is IPL_NONE, but called from " |
|
"interrupt context\n", pp->pr_wchan); |
#endif /* DIAGNOSTIC */ |
|
#ifdef LOCKDEBUG |
|
if (flags & PR_WAITOK) |
|
ASSERT_SLEEPABLE(NULL, "pool_get(PR_WAITOK)"); |
|
#endif |
#endif |
|
if (flags & PR_WAITOK) { |
|
ASSERT_SLEEPABLE(); |
|
} |
|
|
mutex_enter(&pp->pr_lock); |
mutex_enter(&pp->pr_lock); |
pr_enter(pp, file, line); |
pr_enter(pp, file, line); |
Line 1240 pool_do_put(struct pool *pp, void *v, st |
|
Line 1268 pool_do_put(struct pool *pp, void *v, st |
|
|
|
if (pp->pr_flags & PR_WANTED) { |
if (pp->pr_flags & PR_WANTED) { |
pp->pr_flags &= ~PR_WANTED; |
pp->pr_flags &= ~PR_WANTED; |
if (ph->ph_nmissing == 0) |
|
pp->pr_nidle++; |
|
cv_broadcast(&pp->pr_cv); |
cv_broadcast(&pp->pr_cv); |
return; |
|
} |
} |
|
|
/* |
/* |
Line 1262 pool_do_put(struct pool *pp, void *v, st |
|
Line 1287 pool_do_put(struct pool *pp, void *v, st |
|
if (ph->ph_nmissing == 0) { |
if (ph->ph_nmissing == 0) { |
pp->pr_nidle++; |
pp->pr_nidle++; |
if (pp->pr_npages > pp->pr_minpages && |
if (pp->pr_npages > pp->pr_minpages && |
(pp->pr_npages > pp->pr_maxpages || |
pp->pr_npages > pp->pr_maxpages) { |
pa_starved_p(pp->pr_alloc))) { |
|
pr_rmpage(pp, ph, pq); |
pr_rmpage(pp, ph, pq); |
} else { |
} else { |
LIST_REMOVE(ph, ph_pagelist); |
LIST_REMOVE(ph, ph_pagelist); |
Line 1274 pool_do_put(struct pool *pp, void *v, st |
|
Line 1298 pool_do_put(struct pool *pp, void *v, st |
|
* be idle for some period of time before it can |
* be idle for some period of time before it can |
* be reclaimed by the pagedaemon. This minimizes |
* be reclaimed by the pagedaemon. This minimizes |
* ping-pong'ing for memory. |
* ping-pong'ing for memory. |
|
* |
|
* note for 64-bit time_t: truncating to 32-bit is not |
|
* a problem for our usage. |
*/ |
*/ |
getmicrotime(&ph->ph_time); |
ph->ph_time = time_uptime; |
} |
} |
pool_update_curpage(pp); |
pool_update_curpage(pp); |
} |
} |
Line 1427 pool_prime_page(struct pool *pp, void *s |
|
Line 1454 pool_prime_page(struct pool *pp, void *s |
|
LIST_INIT(&ph->ph_itemlist); |
LIST_INIT(&ph->ph_itemlist); |
ph->ph_page = storage; |
ph->ph_page = storage; |
ph->ph_nmissing = 0; |
ph->ph_nmissing = 0; |
getmicrotime(&ph->ph_time); |
ph->ph_time = time_uptime; |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
if ((pp->pr_roflags & PR_PHINPAGE) == 0) |
SPLAY_INSERT(phtree, &pp->pr_phtree, ph); |
SPLAY_INSERT(phtree, &pp->pr_phtree, ph); |
|
|
Line 1436 pool_prime_page(struct pool *pp, void *s |
|
Line 1463 pool_prime_page(struct pool *pp, void *s |
|
/* |
/* |
* Color this page. |
* Color this page. |
*/ |
*/ |
cp = (char *)cp + pp->pr_curcolor; |
ph->ph_off = pp->pr_curcolor; |
|
cp = (char *)cp + ph->ph_off; |
if ((pp->pr_curcolor += align) > pp->pr_maxcolor) |
if ((pp->pr_curcolor += align) > pp->pr_maxcolor) |
pp->pr_curcolor = 0; |
pp->pr_curcolor = 0; |
|
|
Line 1514 pool_update_curpage(struct pool *pp) |
|
Line 1542 pool_update_curpage(struct pool *pp) |
|
if (pp->pr_curpage == NULL) { |
if (pp->pr_curpage == NULL) { |
pp->pr_curpage = LIST_FIRST(&pp->pr_emptypages); |
pp->pr_curpage = LIST_FIRST(&pp->pr_emptypages); |
} |
} |
|
KASSERT((pp->pr_curpage == NULL && pp->pr_nitems == 0) || |
|
(pp->pr_curpage != NULL && pp->pr_nitems > 0)); |
} |
} |
|
|
void |
void |
Line 1577 pool_sethardlimit(struct pool *pp, int n |
|
Line 1607 pool_sethardlimit(struct pool *pp, int n |
|
|
|
/* |
/* |
* Release all complete pages that have not been used recently. |
* Release all complete pages that have not been used recently. |
|
* |
|
* Might be called from interrupt context. |
*/ |
*/ |
int |
int |
#ifdef POOL_DIAGNOSTIC |
#ifdef POOL_DIAGNOSTIC |
Line 1587 pool_reclaim(struct pool *pp) |
|
Line 1619 pool_reclaim(struct pool *pp) |
|
{ |
{ |
struct pool_item_header *ph, *phnext; |
struct pool_item_header *ph, *phnext; |
struct pool_pagelist pq; |
struct pool_pagelist pq; |
struct timeval curtime, diff; |
uint32_t curtime; |
bool klock; |
bool klock; |
int rv; |
int rv; |
|
|
|
if (cpu_intr_p() || cpu_softintr_p()) { |
|
KASSERT(pp->pr_ipl != IPL_NONE); |
|
} |
|
|
if (pp->pr_drain_hook != NULL) { |
if (pp->pr_drain_hook != NULL) { |
/* |
/* |
* The drain hook must be called with the pool unlocked. |
* The drain hook must be called with the pool unlocked. |
Line 1599 pool_reclaim(struct pool *pp) |
|
Line 1635 pool_reclaim(struct pool *pp) |
|
} |
} |
|
|
/* |
/* |
* XXXSMP Because mutexes at IPL_SOFTXXX are still spinlocks, |
* XXXSMP Because we do not want to cause non-MPSAFE code |
* and we are called from the pagedaemon without kernel_lock. |
* to block. |
* Does not apply to IPL_SOFTBIO. |
|
*/ |
*/ |
if (pp->pr_ipl == IPL_SOFTNET || pp->pr_ipl == IPL_SOFTCLOCK || |
if (pp->pr_ipl == IPL_SOFTNET || pp->pr_ipl == IPL_SOFTCLOCK || |
pp->pr_ipl == IPL_SOFTSERIAL) { |
pp->pr_ipl == IPL_SOFTSERIAL) { |
Line 1624 pool_reclaim(struct pool *pp) |
|
Line 1659 pool_reclaim(struct pool *pp) |
|
|
|
LIST_INIT(&pq); |
LIST_INIT(&pq); |
|
|
getmicrotime(&curtime); |
curtime = time_uptime; |
|
|
for (ph = LIST_FIRST(&pp->pr_emptypages); ph != NULL; ph = phnext) { |
for (ph = LIST_FIRST(&pp->pr_emptypages); ph != NULL; ph = phnext) { |
phnext = LIST_NEXT(ph, ph_pagelist); |
phnext = LIST_NEXT(ph, ph_pagelist); |
Line 1634 pool_reclaim(struct pool *pp) |
|
Line 1669 pool_reclaim(struct pool *pp) |
|
break; |
break; |
|
|
KASSERT(ph->ph_nmissing == 0); |
KASSERT(ph->ph_nmissing == 0); |
timersub(&curtime, &ph->ph_time, &diff); |
if (curtime - ph->ph_time < pool_inactive_time |
if (diff.tv_sec < pool_inactive_time |
|
&& !pa_starved_p(pp->pr_alloc)) |
&& !pa_starved_p(pp->pr_alloc)) |
continue; |
continue; |
|
|
Line 1681 pool_drain_start(struct pool **ppp, uint |
|
Line 1715 pool_drain_start(struct pool **ppp, uint |
|
{ |
{ |
struct pool *pp; |
struct pool *pp; |
|
|
KASSERT(!LIST_EMPTY(&pool_head)); |
KASSERT(!TAILQ_EMPTY(&pool_head)); |
|
|
pp = NULL; |
pp = NULL; |
|
|
Line 1689 pool_drain_start(struct pool **ppp, uint |
|
Line 1723 pool_drain_start(struct pool **ppp, uint |
|
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
do { |
do { |
if (drainpp == NULL) { |
if (drainpp == NULL) { |
drainpp = LIST_FIRST(&pool_head); |
drainpp = TAILQ_FIRST(&pool_head); |
} |
} |
if (drainpp != NULL) { |
if (drainpp != NULL) { |
pp = drainpp; |
pp = drainpp; |
drainpp = LIST_NEXT(pp, pr_poollist); |
drainpp = TAILQ_NEXT(pp, pr_poollist); |
} |
} |
/* |
/* |
* Skip completely idle pools. We depend on at least |
* Skip completely idle pools. We depend on at least |
Line 1711 pool_drain_start(struct pool **ppp, uint |
|
Line 1745 pool_drain_start(struct pool **ppp, uint |
|
} |
} |
} |
} |
|
|
void |
bool |
pool_drain_end(struct pool *pp, uint64_t where) |
pool_drain_end(struct pool *pp, uint64_t where) |
{ |
{ |
|
bool reclaimed; |
|
|
if (pp == NULL) |
if (pp == NULL) |
return; |
return false; |
|
|
KASSERT(pp->pr_refcnt > 0); |
KASSERT(pp->pr_refcnt > 0); |
|
|
Line 1725 pool_drain_end(struct pool *pp, uint64_t |
|
Line 1760 pool_drain_end(struct pool *pp, uint64_t |
|
xc_wait(where); |
xc_wait(where); |
|
|
/* Drain the cache (if any) and pool.. */ |
/* Drain the cache (if any) and pool.. */ |
pool_reclaim(pp); |
reclaimed = pool_reclaim(pp); |
|
|
/* Finally, unlock the pool. */ |
/* Finally, unlock the pool. */ |
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
pp->pr_refcnt--; |
pp->pr_refcnt--; |
cv_broadcast(&pool_busy); |
cv_broadcast(&pool_busy); |
mutex_exit(&pool_head_lock); |
mutex_exit(&pool_head_lock); |
|
|
|
return reclaimed; |
} |
} |
|
|
/* |
/* |
Line 1749 pool_printall(const char *modif, void (* |
|
Line 1786 pool_printall(const char *modif, void (* |
|
{ |
{ |
struct pool *pp; |
struct pool *pp; |
|
|
LIST_FOREACH(pp, &pool_head, pr_poollist) { |
TAILQ_FOREACH(pp, &pool_head, pr_poollist) { |
pool_printit(pp, modif, pr); |
pool_printit(pp, modif, pr); |
} |
} |
} |
} |
Line 1776 pool_print_pagelist(struct pool *pp, str |
|
Line 1813 pool_print_pagelist(struct pool *pp, str |
|
#endif |
#endif |
|
|
LIST_FOREACH(ph, pl, ph_pagelist) { |
LIST_FOREACH(ph, pl, ph_pagelist) { |
(*pr)("\t\tpage %p, nmissing %d, time %lu,%lu\n", |
(*pr)("\t\tpage %p, nmissing %d, time %" PRIu32 "\n", |
ph->ph_page, ph->ph_nmissing, |
ph->ph_page, ph->ph_nmissing, ph->ph_time); |
(u_long)ph->ph_time.tv_sec, |
|
(u_long)ph->ph_time.tv_usec); |
|
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (!(pp->pr_roflags & PR_NOTOUCH)) { |
if (!(pp->pr_roflags & PR_NOTOUCH)) { |
LIST_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
LIST_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
Line 1866 pool_print1(struct pool *pp, const char |
|
Line 1901 pool_print1(struct pool *pp, const char |
|
|
|
#define PR_GROUPLIST(pcg) \ |
#define PR_GROUPLIST(pcg) \ |
(*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->pcg_size; i++) { \ |
if (pcg->pcg_objects[i].pcgo_pa != \ |
if (pcg->pcg_objects[i].pcgo_pa != \ |
POOL_PADDR_INVALID) { \ |
POOL_PADDR_INVALID) { \ |
(*pr)("\t\t\t%p, 0x%llx\n", \ |
(*pr)("\t\t\t%p, 0x%llx\n", \ |
Line 1882 pool_print1(struct pool *pp, const char |
|
Line 1917 pool_print1(struct pool *pp, const char |
|
if (pc != NULL) { |
if (pc != NULL) { |
cpuhit = 0; |
cpuhit = 0; |
cpumiss = 0; |
cpumiss = 0; |
for (i = 0; i < MAXCPUS; i++) { |
for (i = 0; i < __arraycount(pc->pc_cpus); i++) { |
if ((cc = pc->pc_cpus[i]) == NULL) |
if ((cc = pc->pc_cpus[i]) == NULL) |
continue; |
continue; |
cpuhit += cc->cc_hits; |
cpuhit += cc->cc_hits; |
Line 2039 pool_cache_bootstrap(pool_cache_t pc, si |
|
Line 2074 pool_cache_bootstrap(pool_cache_t pc, si |
|
void *arg) |
void *arg) |
{ |
{ |
CPU_INFO_ITERATOR cii; |
CPU_INFO_ITERATOR cii; |
|
pool_cache_t pc1; |
struct cpu_info *ci; |
struct cpu_info *ci; |
struct pool *pp; |
struct pool *pp; |
|
|
Line 2046 pool_cache_bootstrap(pool_cache_t pc, si |
|
Line 2082 pool_cache_bootstrap(pool_cache_t pc, si |
|
if (palloc == NULL && ipl == IPL_NONE) |
if (palloc == NULL && ipl == IPL_NONE) |
palloc = &pool_allocator_nointr; |
palloc = &pool_allocator_nointr; |
pool_init(pp, size, align, align_offset, flags, wchan, palloc, ipl); |
pool_init(pp, size, align, align_offset, flags, wchan, palloc, ipl); |
|
mutex_init(&pc->pc_lock, MUTEX_DEFAULT, ipl); |
/* |
|
* XXXAD hack to prevent IP input processing from blocking. |
|
*/ |
|
if (ipl == IPL_SOFTNET) { |
|
mutex_init(&pc->pc_lock, MUTEX_DEFAULT, IPL_VM); |
|
} else { |
|
mutex_init(&pc->pc_lock, MUTEX_DEFAULT, ipl); |
|
} |
|
|
|
if (ctor == NULL) { |
if (ctor == NULL) { |
ctor = (int (*)(void *, void *, int))nullop; |
ctor = (int (*)(void *, void *, int))nullop; |
Line 2078 pool_cache_bootstrap(pool_cache_t pc, si |
|
Line 2106 pool_cache_bootstrap(pool_cache_t pc, si |
|
pc->pc_refcnt = 0; |
pc->pc_refcnt = 0; |
pc->pc_freecheck = NULL; |
pc->pc_freecheck = NULL; |
|
|
|
if ((flags & PR_LARGECACHE) != 0) { |
|
pc->pc_pcgsize = PCG_NOBJECTS_LARGE; |
|
pc->pc_pcgpool = &pcg_large_pool; |
|
} else { |
|
pc->pc_pcgsize = PCG_NOBJECTS_NORMAL; |
|
pc->pc_pcgpool = &pcg_normal_pool; |
|
} |
|
|
/* Allocate per-CPU caches. */ |
/* Allocate per-CPU caches. */ |
memset(pc->pc_cpus, 0, sizeof(pc->pc_cpus)); |
memset(pc->pc_cpus, 0, sizeof(pc->pc_cpus)); |
pc->pc_ncpu = 0; |
pc->pc_ncpu = 0; |
if (ncpu == 0) { |
if (ncpu < 2) { |
/* XXX For sparc: boot CPU is not attached yet. */ |
/* XXX For sparc: boot CPU is not attached yet. */ |
pool_cache_cpu_init1(curcpu(), pc); |
pool_cache_cpu_init1(curcpu(), pc); |
} else { |
} else { |
Line 2089 pool_cache_bootstrap(pool_cache_t pc, si |
|
Line 2125 pool_cache_bootstrap(pool_cache_t pc, si |
|
pool_cache_cpu_init1(ci, pc); |
pool_cache_cpu_init1(ci, pc); |
} |
} |
} |
} |
|
|
if (__predict_true(!cold)) { |
/* Add to list of all pools. */ |
mutex_enter(&pp->pr_lock); |
if (__predict_true(!cold)) |
pp->pr_cache = pc; |
|
mutex_exit(&pp->pr_lock); |
|
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
LIST_INSERT_HEAD(&pool_cache_head, pc, pc_cachelist); |
TAILQ_FOREACH(pc1, &pool_cache_head, pc_cachelist) { |
mutex_exit(&pool_head_lock); |
if (strcmp(pc1->pc_pool.pr_wchan, pc->pc_pool.pr_wchan) > 0) |
} else { |
break; |
pp->pr_cache = pc; |
|
LIST_INSERT_HEAD(&pool_cache_head, pc, pc_cachelist); |
|
} |
} |
|
if (pc1 == NULL) |
|
TAILQ_INSERT_TAIL(&pool_cache_head, pc, pc_cachelist); |
|
else |
|
TAILQ_INSERT_BEFORE(pc1, pc, pc_cachelist); |
|
if (__predict_true(!cold)) |
|
mutex_exit(&pool_head_lock); |
|
|
|
membar_sync(); |
|
pp->pr_cache = pc; |
} |
} |
|
|
/* |
/* |
|
|
pool_cache_destroy(pool_cache_t pc) |
pool_cache_destroy(pool_cache_t pc) |
{ |
{ |
struct pool *pp = &pc->pc_pool; |
struct pool *pp = &pc->pc_pool; |
pool_cache_cpu_t *cc; |
u_int i; |
pcg_t *pcg; |
|
int i; |
|
|
|
/* Remove it from the global list. */ |
/* Remove it from the global list. */ |
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
while (pc->pc_refcnt != 0) |
while (pc->pc_refcnt != 0) |
cv_wait(&pool_busy, &pool_head_lock); |
cv_wait(&pool_busy, &pool_head_lock); |
LIST_REMOVE(pc, pc_cachelist); |
TAILQ_REMOVE(&pool_cache_head, pc, pc_cachelist); |
mutex_exit(&pool_head_lock); |
mutex_exit(&pool_head_lock); |
|
|
/* First, invalidate the entire cache. */ |
/* First, invalidate the entire cache. */ |
Line 2132 pool_cache_destroy(pool_cache_t pc) |
|
Line 2171 pool_cache_destroy(pool_cache_t pc) |
|
mutex_exit(&pp->pr_lock); |
mutex_exit(&pp->pr_lock); |
|
|
/* Destroy per-CPU data */ |
/* Destroy per-CPU data */ |
for (i = 0; i < MAXCPUS; i++) { |
for (i = 0; i < __arraycount(pc->pc_cpus); i++) |
if ((cc = pc->pc_cpus[i]) == NULL) |
pool_cache_invalidate_cpu(pc, i); |
continue; |
|
if ((pcg = cc->cc_current) != NULL) { |
|
pcg->pcg_next = NULL; |
|
pool_cache_invalidate_groups(pc, pcg); |
|
} |
|
if ((pcg = cc->cc_previous) != NULL) { |
|
pcg->pcg_next = NULL; |
|
pool_cache_invalidate_groups(pc, pcg); |
|
} |
|
if (cc != &pc->pc_cpu0) |
|
pool_put(&cache_cpu_pool, cc); |
|
} |
|
|
|
/* Finally, destroy it. */ |
/* Finally, destroy it. */ |
mutex_destroy(&pc->pc_lock); |
mutex_destroy(&pc->pc_lock); |
Line 2166 pool_cache_cpu_init1(struct cpu_info *ci |
|
Line 2193 pool_cache_cpu_init1(struct cpu_info *ci |
|
|
|
index = ci->ci_index; |
index = ci->ci_index; |
|
|
KASSERT(index < MAXCPUS); |
KASSERT(index < __arraycount(pc->pc_cpus)); |
KASSERT(((uintptr_t)pc->pc_cpus & (CACHE_LINE_SIZE - 1)) == 0); |
|
|
|
if ((cc = pc->pc_cpus[index]) != NULL) { |
if ((cc = pc->pc_cpus[index]) != NULL) { |
KASSERT(cc->cc_cpuindex == index); |
KASSERT(cc->cc_cpuindex == index); |
Line 2194 pool_cache_cpu_init1(struct cpu_info *ci |
|
Line 2220 pool_cache_cpu_init1(struct cpu_info *ci |
|
cc->cc_cpuindex = index; |
cc->cc_cpuindex = index; |
cc->cc_hits = 0; |
cc->cc_hits = 0; |
cc->cc_misses = 0; |
cc->cc_misses = 0; |
cc->cc_current = NULL; |
cc->cc_current = __UNCONST(&pcg_dummy); |
cc->cc_previous = NULL; |
cc->cc_previous = __UNCONST(&pcg_dummy); |
|
|
pc->pc_cpus[index] = cc; |
pc->pc_cpus[index] = cc; |
} |
} |
Line 2211 pool_cache_cpu_init(struct cpu_info *ci) |
|
Line 2237 pool_cache_cpu_init(struct cpu_info *ci) |
|
pool_cache_t pc; |
pool_cache_t pc; |
|
|
mutex_enter(&pool_head_lock); |
mutex_enter(&pool_head_lock); |
LIST_FOREACH(pc, &pool_cache_head, pc_cachelist) { |
TAILQ_FOREACH(pc, &pool_cache_head, pc_cachelist) { |
pc->pc_refcnt++; |
pc->pc_refcnt++; |
mutex_exit(&pool_head_lock); |
mutex_exit(&pool_head_lock); |
|
|
Line 2279 pool_cache_invalidate_groups(pool_cache_ |
|
Line 2305 pool_cache_invalidate_groups(pool_cache_ |
|
pool_cache_destruct_object1(pc, object); |
pool_cache_destruct_object1(pc, object); |
} |
} |
|
|
pool_put(&pcgpool, pcg); |
if (pcg->pcg_size == PCG_NOBJECTS_LARGE) { |
|
pool_put(&pcg_large_pool, pcg); |
|
} else { |
|
KASSERT(pcg->pcg_size == PCG_NOBJECTS_NORMAL); |
|
pool_put(&pcg_normal_pool, pcg); |
|
} |
} |
} |
} |
} |
|
|
Line 2288 pool_cache_invalidate_groups(pool_cache_ |
|
Line 2319 pool_cache_invalidate_groups(pool_cache_ |
|
* |
* |
* Invalidate a pool cache (destruct and release all of the |
* Invalidate a pool cache (destruct and release all of the |
* cached objects). Does not reclaim objects from the pool. |
* cached objects). Does not reclaim objects from the pool. |
|
* |
|
* Note: For pool caches that provide constructed objects, there |
|
* is an assumption that another level of synchronization is occurring |
|
* between the input to the constructor and the cache invalidation. |
*/ |
*/ |
void |
void |
pool_cache_invalidate(pool_cache_t pc) |
pool_cache_invalidate(pool_cache_t pc) |
{ |
{ |
pcg_t *full, *empty, *part; |
pcg_t *full, *empty, *part; |
|
#if 0 |
|
uint64_t where; |
|
|
|
if (ncpu < 2 || !mp_online) { |
|
/* |
|
* We might be called early enough in the boot process |
|
* for the CPU data structures to not be fully initialized. |
|
* In this case, simply gather the local CPU's cache now |
|
* since it will be the only one running. |
|
*/ |
|
pool_cache_xcall(pc); |
|
} else { |
|
/* |
|
* Gather all of the CPU-specific caches into the |
|
* global cache. |
|
*/ |
|
where = xc_broadcast(0, (xcfunc_t)pool_cache_xcall, pc, NULL); |
|
xc_wait(where); |
|
} |
|
#endif |
mutex_enter(&pc->pc_lock); |
mutex_enter(&pc->pc_lock); |
full = pc->pc_fullgroups; |
full = pc->pc_fullgroups; |
empty = pc->pc_emptygroups; |
empty = pc->pc_emptygroups; |
Line 2311 pool_cache_invalidate(pool_cache_t pc) |
|
Line 2365 pool_cache_invalidate(pool_cache_t pc) |
|
pool_cache_invalidate_groups(pc, part); |
pool_cache_invalidate_groups(pc, part); |
} |
} |
|
|
|
/* |
|
* pool_cache_invalidate_cpu: |
|
* |
|
* Invalidate all CPU-bound cached objects in pool cache, the CPU being |
|
* identified by its associated index. |
|
* It is caller's responsibility to ensure that no operation is |
|
* taking place on this pool cache while doing this invalidation. |
|
* WARNING: as no inter-CPU locking is enforced, trying to invalidate |
|
* pool cached objects from a CPU different from the one currently running |
|
* may result in an undefined behaviour. |
|
*/ |
|
static void |
|
pool_cache_invalidate_cpu(pool_cache_t pc, u_int index) |
|
{ |
|
|
|
pool_cache_cpu_t *cc; |
|
pcg_t *pcg; |
|
|
|
if ((cc = pc->pc_cpus[index]) == NULL) |
|
return; |
|
|
|
if ((pcg = cc->cc_current) != &pcg_dummy) { |
|
pcg->pcg_next = NULL; |
|
pool_cache_invalidate_groups(pc, pcg); |
|
} |
|
if ((pcg = cc->cc_previous) != &pcg_dummy) { |
|
pcg->pcg_next = NULL; |
|
pool_cache_invalidate_groups(pc, pcg); |
|
} |
|
if (cc != &pc->pc_cpu0) |
|
pool_put(&cache_cpu_pool, cc); |
|
|
|
} |
|
|
void |
void |
pool_cache_set_drain_hook(pool_cache_t pc, void (*fn)(void *, int), void *arg) |
pool_cache_set_drain_hook(pool_cache_t pc, void (*fn)(void *, int), void *arg) |
{ |
{ |
Line 2339 pool_cache_sethardlimit(pool_cache_t pc, |
|
Line 2427 pool_cache_sethardlimit(pool_cache_t pc, |
|
pool_sethardlimit(&pc->pc_pool, n, warnmess, ratecap); |
pool_sethardlimit(&pc->pc_pool, n, warnmess, ratecap); |
} |
} |
|
|
static inline pool_cache_cpu_t * |
static bool __noinline |
pool_cache_cpu_enter(pool_cache_t pc, int *s) |
pool_cache_get_slow(pool_cache_cpu_t *cc, int s, void **objectp, |
{ |
|
pool_cache_cpu_t *cc; |
|
|
|
/* |
|
* Prevent other users of the cache from accessing our |
|
* CPU-local data. To avoid touching shared state, we |
|
* pull the neccessary information from CPU local data. |
|
*/ |
|
crit_enter(); |
|
cc = pc->pc_cpus[curcpu()->ci_index]; |
|
KASSERT(cc->cc_cache == pc); |
|
if (cc->cc_ipl != IPL_NONE) { |
|
*s = splraiseipl(cc->cc_iplcookie); |
|
} |
|
KASSERT(((uintptr_t)cc & (CACHE_LINE_SIZE - 1)) == 0); |
|
|
|
return cc; |
|
} |
|
|
|
static inline void |
|
pool_cache_cpu_exit(pool_cache_cpu_t *cc, int *s) |
|
{ |
|
|
|
/* No longer need exclusive access to the per-CPU data. */ |
|
if (cc->cc_ipl != IPL_NONE) { |
|
splx(*s); |
|
} |
|
crit_exit(); |
|
} |
|
|
|
#if __GNUC_PREREQ__(3, 0) |
|
__attribute ((noinline)) |
|
#endif |
|
pool_cache_cpu_t * |
|
pool_cache_get_slow(pool_cache_cpu_t *cc, int *s, void **objectp, |
|
paddr_t *pap, int flags) |
paddr_t *pap, int flags) |
{ |
{ |
pcg_t *pcg, *cur; |
pcg_t *pcg, *cur; |
Line 2383 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
Line 2436 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
pool_cache_t pc; |
pool_cache_t pc; |
void *object; |
void *object; |
|
|
|
KASSERT(cc->cc_current->pcg_avail == 0); |
|
KASSERT(cc->cc_previous->pcg_avail == 0); |
|
|
pc = cc->cc_cache; |
pc = cc->cc_cache; |
cc->cc_misses++; |
cc->cc_misses++; |
|
|
Line 2390 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
Line 2446 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
* Nothing was available locally. Try and grab a group |
* Nothing was available locally. Try and grab a group |
* from the cache. |
* from the cache. |
*/ |
*/ |
if (!mutex_tryenter(&pc->pc_lock)) { |
if (__predict_false(!mutex_tryenter(&pc->pc_lock))) { |
ncsw = curlwp->l_ncsw; |
ncsw = curlwp->l_ncsw; |
mutex_enter(&pc->pc_lock); |
mutex_enter(&pc->pc_lock); |
pc->pc_contended++; |
pc->pc_contended++; |
Line 2402 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
Line 2458 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
*/ |
*/ |
if (curlwp->l_ncsw != ncsw) { |
if (curlwp->l_ncsw != ncsw) { |
mutex_exit(&pc->pc_lock); |
mutex_exit(&pc->pc_lock); |
pool_cache_cpu_exit(cc, s); |
return true; |
return pool_cache_cpu_enter(pc, s); |
|
} |
} |
} |
} |
|
|
if ((pcg = pc->pc_fullgroups) != NULL) { |
if (__predict_true((pcg = pc->pc_fullgroups) != NULL)) { |
/* |
/* |
* If there's a full group, release our empty |
* If there's a full group, release our empty |
* group back to the cache. Install the full |
* group back to the cache. Install the full |
* group as cc_current and return. |
* group as cc_current and return. |
*/ |
*/ |
if ((cur = cc->cc_current) != NULL) { |
if (__predict_true((cur = cc->cc_current) != &pcg_dummy)) { |
KASSERT(cur->pcg_avail == 0); |
KASSERT(cur->pcg_avail == 0); |
cur->pcg_next = pc->pc_emptygroups; |
cur->pcg_next = pc->pc_emptygroups; |
pc->pc_emptygroups = cur; |
pc->pc_emptygroups = cur; |
pc->pc_nempty++; |
pc->pc_nempty++; |
} |
} |
KASSERT(pcg->pcg_avail == PCG_NOBJECTS); |
KASSERT(pcg->pcg_avail == pcg->pcg_size); |
cc->cc_current = pcg; |
cc->cc_current = pcg; |
pc->pc_fullgroups = pcg->pcg_next; |
pc->pc_fullgroups = pcg->pcg_next; |
pc->pc_hits++; |
pc->pc_hits++; |
pc->pc_nfull--; |
pc->pc_nfull--; |
mutex_exit(&pc->pc_lock); |
mutex_exit(&pc->pc_lock); |
return cc; |
return true; |
} |
} |
|
|
/* |
/* |
Line 2435 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
Line 2490 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
*/ |
*/ |
pc->pc_misses++; |
pc->pc_misses++; |
mutex_exit(&pc->pc_lock); |
mutex_exit(&pc->pc_lock); |
pool_cache_cpu_exit(cc, s); |
splx(s); |
|
|
object = pool_get(&pc->pc_pool, flags); |
object = pool_get(&pc->pc_pool, flags); |
*objectp = object; |
*objectp = object; |
if (object == NULL) |
if (__predict_false(object == NULL)) |
return NULL; |
return false; |
|
|
if ((*pc->pc_ctor)(pc->pc_arg, object, flags) != 0) { |
if (__predict_false((*pc->pc_ctor)(pc->pc_arg, object, flags) != 0)) { |
pool_put(&pc->pc_pool, object); |
pool_put(&pc->pc_pool, object); |
*objectp = NULL; |
*objectp = NULL; |
return NULL; |
return false; |
} |
} |
|
|
KASSERT((((vaddr_t)object + pc->pc_pool.pr_itemoffset) & |
KASSERT((((vaddr_t)object + pc->pc_pool.pr_itemoffset) & |
Line 2460 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
Line 2515 pool_cache_get_slow(pool_cache_cpu_t *cc |
|
} |
} |
|
|
FREECHECK_OUT(&pc->pc_freecheck, object); |
FREECHECK_OUT(&pc->pc_freecheck, object); |
return NULL; |
return false; |
} |
} |
|
|
/* |
/* |
Line 2477 pool_cache_get_paddr(pool_cache_t pc, in |
|
Line 2532 pool_cache_get_paddr(pool_cache_t pc, in |
|
void *object; |
void *object; |
int s; |
int s; |
|
|
#ifdef LOCKDEBUG |
KASSERTMSG((!cpu_intr_p() && !cpu_softintr_p()) || |
if (flags & PR_WAITOK) |
(pc->pc_pool.pr_ipl != IPL_NONE || cold || panicstr != NULL), |
ASSERT_SLEEPABLE(NULL, "pool_cache_get(PR_WAITOK)"); |
("pool '%s' is IPL_NONE, but called from interrupt context\n", |
#endif |
pc->pc_pool.pr_wchan)); |
|
|
cc = pool_cache_cpu_enter(pc, &s); |
if (flags & PR_WAITOK) { |
do { |
ASSERT_SLEEPABLE(); |
|
} |
|
|
|
/* Lock out interrupts and disable preemption. */ |
|
s = splvm(); |
|
while (/* CONSTCOND */ true) { |
/* Try and allocate an object from the current group. */ |
/* Try and allocate an object from the current group. */ |
|
cc = pc->pc_cpus[curcpu()->ci_index]; |
|
KASSERT(cc->cc_cache == pc); |
pcg = cc->cc_current; |
pcg = cc->cc_current; |
if (pcg != NULL && pcg->pcg_avail > 0) { |
if (__predict_true(pcg->pcg_avail > 0)) { |
object = pcg->pcg_objects[--pcg->pcg_avail].pcgo_va; |
object = pcg->pcg_objects[--pcg->pcg_avail].pcgo_va; |
if (pap != NULL) |
if (__predict_false(pap != NULL)) |
*pap = pcg->pcg_objects[pcg->pcg_avail].pcgo_pa; |
*pap = pcg->pcg_objects[pcg->pcg_avail].pcgo_pa; |
|
#if defined(DIAGNOSTIC) |
pcg->pcg_objects[pcg->pcg_avail].pcgo_va = NULL; |
pcg->pcg_objects[pcg->pcg_avail].pcgo_va = NULL; |
KASSERT(pcg->pcg_avail <= PCG_NOBJECTS); |
KASSERT(pcg->pcg_avail < pcg->pcg_size); |
KASSERT(object != NULL); |
KASSERT(object != NULL); |
|
#endif |
cc->cc_hits++; |
cc->cc_hits++; |
pool_cache_cpu_exit(cc, &s); |
splx(s); |
FREECHECK_OUT(&pc->pc_freecheck, object); |
FREECHECK_OUT(&pc->pc_freecheck, object); |
return object; |
return object; |
} |
} |
Line 2504 pool_cache_get_paddr(pool_cache_t pc, in |
|
Line 2568 pool_cache_get_paddr(pool_cache_t pc, in |
|
* it with the current group and allocate from there. |
* it with the current group and allocate from there. |
*/ |
*/ |
pcg = cc->cc_previous; |
pcg = cc->cc_previous; |
if (pcg != NULL && pcg->pcg_avail > 0) { |
if (__predict_true(pcg->pcg_avail > 0)) { |
cc->cc_previous = cc->cc_current; |
cc->cc_previous = cc->cc_current; |
cc->cc_current = pcg; |
cc->cc_current = pcg; |
continue; |
continue; |
Line 2513 pool_cache_get_paddr(pool_cache_t pc, in |
|
Line 2577 pool_cache_get_paddr(pool_cache_t pc, in |
|
/* |
/* |
* Can't allocate from either group: try the slow path. |
* Can't allocate from either group: try the slow path. |
* If get_slow() allocated an object for us, or if |
* If get_slow() allocated an object for us, or if |
* no more objects are available, it will return NULL. |
* no more objects are available, it will return false. |
* Otherwise, we need to retry. |
* Otherwise, we need to retry. |
*/ |
*/ |
cc = pool_cache_get_slow(cc, &s, &object, pap, flags); |
if (!pool_cache_get_slow(cc, s, &object, pap, flags)) |
} while (cc != NULL); |
break; |
|
} |
|
|
return object; |
return object; |
} |
} |
|
|
#if __GNUC_PREREQ__(3, 0) |
static bool __noinline |
__attribute ((noinline)) |
pool_cache_put_slow(pool_cache_cpu_t *cc, int s, void *object) |
#endif |
|
pool_cache_cpu_t * |
|
pool_cache_put_slow(pool_cache_cpu_t *cc, int *s, void *object, paddr_t pa) |
|
{ |
{ |
pcg_t *pcg, *cur; |
pcg_t *pcg, *cur; |
uint64_t ncsw; |
uint64_t ncsw; |
pool_cache_t pc; |
pool_cache_t pc; |
|
|
|
KASSERT(cc->cc_current->pcg_avail == cc->cc_current->pcg_size); |
|
KASSERT(cc->cc_previous->pcg_avail == cc->cc_previous->pcg_size); |
|
|
pc = cc->cc_cache; |
pc = cc->cc_cache; |
|
pcg = NULL; |
cc->cc_misses++; |
cc->cc_misses++; |
|
|
/* |
/* |
* No free slots locally. Try to grab an empty, unused |
* If there are no empty groups in the cache then allocate one |
* group from the cache. |
* while still unlocked. |
*/ |
*/ |
if (!mutex_tryenter(&pc->pc_lock)) { |
if (__predict_false(pc->pc_emptygroups == NULL)) { |
|
if (__predict_true(!pool_cache_disable)) { |
|
pcg = pool_get(pc->pc_pcgpool, PR_NOWAIT); |
|
} |
|
if (__predict_true(pcg != NULL)) { |
|
pcg->pcg_avail = 0; |
|
pcg->pcg_size = pc->pc_pcgsize; |
|
} |
|
} |
|
|
|
/* Lock the cache. */ |
|
if (__predict_false(!mutex_tryenter(&pc->pc_lock))) { |
ncsw = curlwp->l_ncsw; |
ncsw = curlwp->l_ncsw; |
mutex_enter(&pc->pc_lock); |
mutex_enter(&pc->pc_lock); |
pc->pc_contended++; |
pc->pc_contended++; |
|
|
/* |
/* |
* If we context switched while locking, then |
* If we context switched while locking, then our view of |
* our view of the per-CPU data is invalid: |
* the per-CPU data is invalid: retry. |
* retry. |
|
*/ |
*/ |
if (curlwp->l_ncsw != ncsw) { |
if (__predict_false(curlwp->l_ncsw != ncsw)) { |
mutex_exit(&pc->pc_lock); |
mutex_exit(&pc->pc_lock); |
pool_cache_cpu_exit(cc, s); |
if (pcg != NULL) { |
return pool_cache_cpu_enter(pc, s); |
pool_put(pc->pc_pcgpool, pcg); |
|
} |
|
return true; |
} |
} |
} |
} |
|
|
if ((pcg = pc->pc_emptygroups) != NULL) { |
/* If there are no empty groups in the cache then allocate one. */ |
/* |
if (pcg == NULL && pc->pc_emptygroups != NULL) { |
* If there's a empty group, release our full |
pcg = pc->pc_emptygroups; |
* group back to the cache. Install the empty |
|
* group as cc_current and return. |
|
*/ |
|
if ((cur = cc->cc_current) != NULL) { |
|
KASSERT(cur->pcg_avail == PCG_NOBJECTS); |
|
cur->pcg_next = pc->pc_fullgroups; |
|
pc->pc_fullgroups = cur; |
|
pc->pc_nfull++; |
|
} |
|
KASSERT(pcg->pcg_avail == 0); |
|
cc->cc_current = pcg; |
|
pc->pc_emptygroups = pcg->pcg_next; |
pc->pc_emptygroups = pcg->pcg_next; |
pc->pc_hits++; |
|
pc->pc_nempty--; |
pc->pc_nempty--; |
mutex_exit(&pc->pc_lock); |
|
return cc; |
|
} |
} |
|
|
/* |
/* |
* Nothing available locally or in cache. Take the |
* If there's a empty group, release our full group back |
* slow path and try to allocate a new group that we |
* to the cache. Install the empty group to the local CPU |
* can release to. |
* and return. |
*/ |
|
pc->pc_misses++; |
|
mutex_exit(&pc->pc_lock); |
|
pool_cache_cpu_exit(cc, s); |
|
|
|
/* |
|
* If we can't allocate a new group, just throw the |
|
* object away. |
|
*/ |
*/ |
pcg = pool_get(&pcgpool, PR_NOWAIT); |
if (pcg != NULL) { |
if (pcg == NULL) { |
KASSERT(pcg->pcg_avail == 0); |
pool_cache_destruct_object(pc, object); |
if (__predict_false(cc->cc_previous == &pcg_dummy)) { |
return NULL; |
cc->cc_previous = pcg; |
|
} else { |
|
cur = cc->cc_current; |
|
if (__predict_true(cur != &pcg_dummy)) { |
|
KASSERT(cur->pcg_avail == cur->pcg_size); |
|
cur->pcg_next = pc->pc_fullgroups; |
|
pc->pc_fullgroups = cur; |
|
pc->pc_nfull++; |
|
} |
|
cc->cc_current = pcg; |
|
} |
|
pc->pc_hits++; |
|
mutex_exit(&pc->pc_lock); |
|
return true; |
} |
} |
#ifdef DIAGNOSTIC |
|
memset(pcg, 0, sizeof(*pcg)); |
|
#else |
|
pcg->pcg_avail = 0; |
|
#endif |
|
|
|
/* |
/* |
* Add the empty group to the cache and try again. |
* Nothing available locally or in cache, and we didn't |
|
* allocate an empty group. Take the slow path and destroy |
|
* the object here and now. |
*/ |
*/ |
mutex_enter(&pc->pc_lock); |
pc->pc_misses++; |
pcg->pcg_next = pc->pc_emptygroups; |
|
pc->pc_emptygroups = pcg; |
|
pc->pc_nempty++; |
|
mutex_exit(&pc->pc_lock); |
mutex_exit(&pc->pc_lock); |
|
splx(s); |
|
pool_cache_destruct_object(pc, object); |
|
|
return pool_cache_cpu_enter(pc, s); |
return false; |
} |
} |
|
|
/* |
/* |
Line 2626 pool_cache_put_paddr(pool_cache_t pc, vo |
|
Line 2691 pool_cache_put_paddr(pool_cache_t pc, vo |
|
pcg_t *pcg; |
pcg_t *pcg; |
int s; |
int s; |
|
|
|
KASSERT(object != NULL); |
FREECHECK_IN(&pc->pc_freecheck, object); |
FREECHECK_IN(&pc->pc_freecheck, object); |
|
|
cc = pool_cache_cpu_enter(pc, &s); |
/* Lock out interrupts and disable preemption. */ |
do { |
s = splvm(); |
|
while (/* CONSTCOND */ true) { |
/* If the current group isn't full, release it there. */ |
/* If the current group isn't full, release it there. */ |
|
cc = pc->pc_cpus[curcpu()->ci_index]; |
|
KASSERT(cc->cc_cache == pc); |
pcg = cc->cc_current; |
pcg = cc->cc_current; |
if (pcg != NULL && pcg->pcg_avail < PCG_NOBJECTS) { |
if (__predict_true(pcg->pcg_avail < pcg->pcg_size)) { |
KASSERT(pcg->pcg_objects[pcg->pcg_avail].pcgo_va |
|
== NULL); |
|
pcg->pcg_objects[pcg->pcg_avail].pcgo_va = object; |
pcg->pcg_objects[pcg->pcg_avail].pcgo_va = object; |
pcg->pcg_objects[pcg->pcg_avail].pcgo_pa = pa; |
pcg->pcg_objects[pcg->pcg_avail].pcgo_pa = pa; |
pcg->pcg_avail++; |
pcg->pcg_avail++; |
cc->cc_hits++; |
cc->cc_hits++; |
pool_cache_cpu_exit(cc, &s); |
splx(s); |
return; |
return; |
} |
} |
|
|
/* |
/* |
* That failed. If the previous group is empty, swap |
* That failed. If the previous group isn't full, swap |
* it with the current group and try again. |
* it with the current group and try again. |
*/ |
*/ |
pcg = cc->cc_previous; |
pcg = cc->cc_previous; |
if (pcg != NULL && pcg->pcg_avail == 0) { |
if (__predict_true(pcg->pcg_avail < pcg->pcg_size)) { |
cc->cc_previous = cc->cc_current; |
cc->cc_previous = cc->cc_current; |
cc->cc_current = pcg; |
cc->cc_current = pcg; |
continue; |
continue; |
Line 2657 pool_cache_put_paddr(pool_cache_t pc, vo |
|
Line 2724 pool_cache_put_paddr(pool_cache_t pc, vo |
|
/* |
/* |
* Can't free to either group: try the slow path. |
* Can't free to either group: try the slow path. |
* If put_slow() releases the object for us, it |
* If put_slow() releases the object for us, it |
* will return NULL. Otherwise we need to retry. |
* will return false. Otherwise we need to retry. |
*/ |
*/ |
cc = pool_cache_put_slow(cc, &s, object, pa); |
if (!pool_cache_put_slow(cc, s, object)) |
} while (cc != NULL); |
break; |
|
} |
} |
} |
|
|
/* |
/* |
Line 2674 pool_cache_xcall(pool_cache_t pc) |
|
Line 2742 pool_cache_xcall(pool_cache_t pc) |
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{ |
{ |
pool_cache_cpu_t *cc; |
pool_cache_cpu_t *cc; |
pcg_t *prev, *cur, **list; |
pcg_t *prev, *cur, **list; |
int s = 0; /* XXXgcc */ |
int s; |
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cc = pool_cache_cpu_enter(pc, &s); |
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cur = cc->cc_current; |
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cc->cc_current = NULL; |
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prev = cc->cc_previous; |
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cc->cc_previous = NULL; |
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pool_cache_cpu_exit(cc, &s); |
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/* |
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* XXXSMP Go to splvm to prevent kernel_lock from being taken, |
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* because locks at IPL_SOFTXXX are still spinlocks. Does not |
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* apply to IPL_SOFTBIO. Cross-call threads do not take the |
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* kernel_lock. |
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*/ |
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s = splvm(); |
s = splvm(); |
mutex_enter(&pc->pc_lock); |
mutex_enter(&pc->pc_lock); |
if (cur != NULL) { |
cc = pc->pc_cpus[curcpu()->ci_index]; |
if (cur->pcg_avail == PCG_NOBJECTS) { |
cur = cc->cc_current; |
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cc->cc_current = __UNCONST(&pcg_dummy); |
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prev = cc->cc_previous; |
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cc->cc_previous = __UNCONST(&pcg_dummy); |
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if (cur != &pcg_dummy) { |
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if (cur->pcg_avail == cur->pcg_size) { |
list = &pc->pc_fullgroups; |
list = &pc->pc_fullgroups; |
pc->pc_nfull++; |
pc->pc_nfull++; |
} else if (cur->pcg_avail == 0) { |
} else if (cur->pcg_avail == 0) { |
Line 2705 pool_cache_xcall(pool_cache_t pc) |
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Line 2765 pool_cache_xcall(pool_cache_t pc) |
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cur->pcg_next = *list; |
cur->pcg_next = *list; |
*list = cur; |
*list = cur; |
} |
} |
if (prev != NULL) { |
if (prev != &pcg_dummy) { |
if (prev->pcg_avail == PCG_NOBJECTS) { |
if (prev->pcg_avail == prev->pcg_size) { |
list = &pc->pc_fullgroups; |
list = &pc->pc_fullgroups; |
pc->pc_nfull++; |
pc->pc_nfull++; |
} else if (prev->pcg_avail == 0) { |
} else if (prev->pcg_avail == 0) { |
Line 2886 pool_page_free_nointr(struct pool *pp, v |
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Line 2946 pool_page_free_nointr(struct pool *pp, v |
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uvm_km_free_poolpage_cache(kernel_map, (vaddr_t) v); |
uvm_km_free_poolpage_cache(kernel_map, (vaddr_t) v); |
} |
} |
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#if defined(DDB) |
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static bool |
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pool_in_page(struct pool *pp, struct pool_item_header *ph, uintptr_t addr) |
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{ |
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return (uintptr_t)ph->ph_page <= addr && |
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addr < (uintptr_t)ph->ph_page + pp->pr_alloc->pa_pagesz; |
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} |
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static bool |
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pool_in_item(struct pool *pp, void *item, uintptr_t addr) |
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{ |
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return (uintptr_t)item <= addr && addr < (uintptr_t)item + pp->pr_size; |
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} |
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static bool |
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pool_in_cg(struct pool *pp, struct pool_cache_group *pcg, uintptr_t addr) |
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{ |
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int i; |
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if (pcg == NULL) { |
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return false; |
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} |
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for (i = 0; i < pcg->pcg_avail; i++) { |
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if (pool_in_item(pp, pcg->pcg_objects[i].pcgo_va, addr)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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static bool |
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pool_allocated(struct pool *pp, struct pool_item_header *ph, uintptr_t addr) |
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{ |
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if ((pp->pr_roflags & PR_NOTOUCH) != 0) { |
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unsigned int idx = pr_item_notouch_index(pp, ph, (void *)addr); |
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pool_item_bitmap_t *bitmap = |
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ph->ph_bitmap + (idx / BITMAP_SIZE); |
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pool_item_bitmap_t mask = 1 << (idx & BITMAP_MASK); |
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return (*bitmap & mask) == 0; |
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} else { |
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struct pool_item *pi; |
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LIST_FOREACH(pi, &ph->ph_itemlist, pi_list) { |
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if (pool_in_item(pp, pi, addr)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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void |
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pool_whatis(uintptr_t addr, void (*pr)(const char *, ...)) |
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{ |
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struct pool *pp; |
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TAILQ_FOREACH(pp, &pool_head, pr_poollist) { |
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struct pool_item_header *ph; |
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uintptr_t item; |
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bool allocated = true; |
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bool incache = false; |
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bool incpucache = false; |
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char cpucachestr[32]; |
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if ((pp->pr_roflags & PR_PHINPAGE) != 0) { |
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LIST_FOREACH(ph, &pp->pr_fullpages, ph_pagelist) { |
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if (pool_in_page(pp, ph, addr)) { |
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goto found; |
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} |
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} |
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LIST_FOREACH(ph, &pp->pr_partpages, ph_pagelist) { |
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if (pool_in_page(pp, ph, addr)) { |
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allocated = |
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pool_allocated(pp, ph, addr); |
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goto found; |
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} |
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} |
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LIST_FOREACH(ph, &pp->pr_emptypages, ph_pagelist) { |
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if (pool_in_page(pp, ph, addr)) { |
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allocated = false; |
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goto found; |
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} |
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} |
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continue; |
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} else { |
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ph = pr_find_pagehead_noalign(pp, (void *)addr); |
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if (ph == NULL || !pool_in_page(pp, ph, addr)) { |
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continue; |
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} |
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allocated = pool_allocated(pp, ph, addr); |
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} |
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found: |
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if (allocated && pp->pr_cache) { |
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pool_cache_t pc = pp->pr_cache; |
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struct pool_cache_group *pcg; |
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int i; |
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for (pcg = pc->pc_fullgroups; pcg != NULL; |
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pcg = pcg->pcg_next) { |
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if (pool_in_cg(pp, pcg, addr)) { |
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incache = true; |
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goto print; |
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} |
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} |
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for (i = 0; i < __arraycount(pc->pc_cpus); i++) { |
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pool_cache_cpu_t *cc; |
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if ((cc = pc->pc_cpus[i]) == NULL) { |
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continue; |
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} |
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if (pool_in_cg(pp, cc->cc_current, addr) || |
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pool_in_cg(pp, cc->cc_previous, addr)) { |
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struct cpu_info *ci = |
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cpu_lookup(i); |
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incpucache = true; |
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snprintf(cpucachestr, |
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sizeof(cpucachestr), |
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"cached by CPU %u", |
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ci->ci_index); |
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goto print; |
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} |
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} |
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} |
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print: |
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item = (uintptr_t)ph->ph_page + ph->ph_off; |
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item = item + rounddown(addr - item, pp->pr_size); |
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(*pr)("%p is %p+%zu in POOL '%s' (%s)\n", |
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(void *)addr, item, (size_t)(addr - item), |
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pp->pr_wchan, |
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incpucache ? cpucachestr : |
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incache ? "cached" : allocated ? "allocated" : "free"); |
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} |
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} |
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#endif /* defined(DDB) */ |