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1: SlabÖÐʹÓõÄÒ³Ãæ¶¼»á¼ÓÉÏ“PG_slab”±êÖ¾£¬ÒÔ¸úÒ»°ãµÄÒ³ÃæÇø±ð¡£ÁíÍ⣬ÔÚÊÍ·ÅÄÚ´æµÄʱºò£¬¾³£ÐèÒªÓõ½´ÓÒ³Ãæµ½slabµÄ¶ÔӦת»»¹ØÏµ¡£ÄÇÊÇÔõÑù±êʶµÄÄØ£¿
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static void *kmem_getpages(kmem_cache_t *cachep, int flags, int nodeid)
{
……
while (i--) {
//Ϊ·ÖµÃµÄÿһ¸öÒ³ÃæÉèÖÃPG_slab±êÖ¾
SetPageSlab(page);
page++;
}
……
}
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static int cache_grow (kmem_cache_t * cachep, int flags)
{
……
//ÇëÇóÄÚ´æ¹ýºó£¬ÉèÖÃÄÚ´æÊôÐÔ
set_slab_attr(cachep, slabp, objp);
……
}
static void set_slab_attr(kmem_cache_t *cachep, struct slab *slabp, void *objp)
{
int i;
struct page *page;
//¼ÆËãÒ³Ãæ×ÜÊý
i = 1 << cachep->gfporder;
//ÐéÄâµØÖ·×ª»»³ÉÏàÓ¦Ò³Ãæ
page = virt_to_page(objp);
do {
// #define SET_PAGE_CACHE(pg,x) ((pg)->lru.next = (struct list_head *)(x))
SET_PAGE_CACHE(page, cachep);
#define SET_PAGE_SLAB(pg,x) ((pg)->lru.prev = (struct list_head *)(x))
SET_PAGE_SLAB(page, slabp);
page++;
} while (--i);
}
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Logical Link Control and Adaptation Protocol(L2CAP)
Âß¼Á¬½Ó¿ØÖƺÍÊÊÅäÐÒé (L2CAP) ΪÉϲãÐÒéÌá¹©ÃæÏòÁ¬½ÓºÍÎÞÁ¬½ÓµÄÊý¾Ý·þÎñ£¬²¢Ìṩ¶àÐÒ鹦ÄܺͷָîÖØ×é²Ù×÷¡£L2CAP ³äÐíÉϲãÐÒéºÍÓ¦ÓÃÈí¼þ´«ÊäºÍ½ÓÊÕ×î´ó³¤¶ÈΪ 64K µÄ L2CAP Ê ......
1¡¢¼òµ¥²âÊÔʵÀý
for i in `find . -type f -name "*.c"`
do
echo $i
basename $i »ñÈ¡*.cÎļþÃû
dirname $i »ñÈ¡*.c¶ÔÓ¦µÄĿ¼Ãû
done
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diff LinuxÔ´Â룬²¢½«Óв»Ò»ÑùµÄÔ´ÂëÕûÀíÔÚÒ»Æð£¬ÒªÇó£ºÎļþ ......
תÀ´µÄ£¬Ã»Ê¿ÉÒÔ¿´¿´
bin = BINaries
/dev = DEVices
/etc = ETCetera
/lib = LIBrary
/proc = PROCesses
/sbin = Superuser BINaries
/tmp = TeMPorary
/usr = Unix Shared Resources
/var = VARiable ?
FIFO = First In, First Out
GRUB = GRand Unified Bootloader
IFS = Internal Field Seperators
LILO ......
Æß£ºkmem_cache_free£¨£©µÄʵÏÖ
kmem_cache_freeÓÃÓÚ°Ñ´ÓslabÖзÖÅäµÄ¶ÔÏóÊͷŵô£¬Í¬·ÖÅäÒ»Ñù£¬ËüÊ×ÏÈ»á°ÑËü·Åµ½ACÖУ¬Èç¹ûACÂúÁË£¬Ôò°Ñ¶ÔÏóÊͷŵ½shareÁ´ÖУ¬Èç¹ûshareÒ²ÂúÁË£¬Ò²¾Í°ÑËüÊÍ·ÅÖÁslab¡£À´¿´¾ßÌåµÄ´úÂ룺
void kmem_cache_free (kmem_cache_t *cachep, void *objp)
{
unsi ......