kmem_cache_t*kmem_cache_create (...) { ...if(size & (BYTES_PER_WORD-1)) { size+= (BYTES_PER_WORD-1); size&= ~(BYTES_PER_WORD-1); } 对象对齐(在align中)通常也是基于处理器的字长。但如果设置了SLAB_HWCACHE_ALIGN标志,则内核按照特定于体系结构的函数cache_line_size给出的值,来对齐...
参数含义如下: - name:cache 名字 - size:对象大小 - align:对象对齐 - flags:Slab 标志 - SLAB_POISON:引用未初始化内存检查 - SLAB_RED_ZONE:内存溢出检查 - SLAB_HWCACHE_ALIGN:硬件 cacheline 对齐 - ctor:对象构造函数 kmem_cache_create_usercopy kmem_cache_create_usercopy() 函数比 kmem_cache_crea...
struct kmem_cache * kmem_cache_create(const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { struct kmem_cache *s = NULL; const char *cache_name; int err; get_online_cpus(); get_online_mems(); memcg_get_cache_ids(); mutex_lock(&slab_mute...
b为从上往下数的段落号，如有lastb字样则为从下往上数第b段。
Use the KMEM_CACHE() macro instead of kmem_cache_create() to simplify the creation of SLAB caches related to delayed refs when the default values are used. Signed-off-by: Kunwu Chan <chentao@kylinos.cn> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <ds...
kmem_cache_create(const char *name, unsigned int size, unsigned int align, slab_flags_t flags, void (*ctor)(void *)) { return do_kmem_cache_create_usercopy(name, size, UINT_MAX, align, flags, 0, 0, ctor); struct kmem_cache_args kmem_args = { .align = align, .ctor = ctor, ...
通过学习Linux内核里的将近500个kernel api,学习linux驱动开发的核心通用技术 课程简介 Linux是一套免费使用和自由传播的类Unix操作系统,是一个基于POSIX和Unix的多用户、多任务、支持多线程和多CPU的操作系统。伴随着互联网的发展,Linux得到了来自全世界软件爱好者、组织、公司的支持。它除了在服务器操作系统方面保持着...
error: drivers/isdn/hardware/mISDN/capi.c:265: error: too few arguments to function ‘kmem_cache_create’ solution: vi +127 include/linux/isdn_compat.h change #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) to #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22) Bye Alberto ___ Misdn...
kmem_cache_t* kmem_cache_create (...) { ... if (size & (BYTES_PER_WORD-1)) { size += (BYTES_PER_WORD-1); size &= ~(BYTES_PER_WORD-1); } 1. 2. 3. 4. 5. 6. 对象对齐(在align中)通常也是基于处理器的字长。但如果设置了SLAB_HWCACHE_ALIGN标志,则内核按照特定于体系结构的函...
@@ -271,9 +271,6 @@ struct kmem_cache *kmem_cache_create_usercopy(const char *name, slab_flags_t flags, unsigned int useroffset, unsigned int usersize, void (*ctor)(void *)); struct kmem_cache *kmem_cache_create_rcu(const char *name, unsigned int size, unsigned int freeptr_offset...