probe::vm.kmem_cache_free Red Hat Enterprise Linux SystemTap Tapset Reference Preface 1. Introduction Introduction 1.1. Documentation Goals 2. Tapset Development Guidelines Tapset Development Guidelines 2.1. Writing Good Tapsets 2.2. Elements of a Tapset...
1. 首先访问 array_cache,查看是否有空闲 Obj,如果存在的就返回,否则; 1. 调用 cache_alloc_refill 从 kmem_cache_node 转移一部分空闲 Obj 到 array_cahce 1. 再次返回 array_cache 分配 Obj /// @file mm/slab.c 3029 static inline void *___cache_alloc(struct kmem_cache *cachep, gfp_t flags...
kmem_cache_create , kmem_cache_alloc , kmem_cache_free , kmem_cache_destroy , kmem_cache_set_move - kernel memory cache allocator operations
在这个示例中,我们首先使用kmem_cache_create函数创建了一个名为 “my_cache” 的cache。然后,我们使用kmem_cache_alloc函数从cache 中分配了两个内存块。最后,我们使用kmem_cache_free函数释放了这两个内存块,并使用kmem_cache_destroy函数销毁了cache。 关系图 下面是kmem_cache_cpu freelist 和其他相关结构之间的...
dm_region_hash dm_log dm_mod [last unloaded: emcpioc] Pid: 56441, comm: autocomplete_ge Tainted: P --- 2.6.32-358.41.1.el6.x86_64 #1 HP ProLiant DL380p Gen8 RIP: 0010:[<ffffffff81169032>] [<ffffffff81169032>] kmem_cache_free+0x222/0x2b0 RSP: 0000:ffff880099903d70 EFLAGS...
Panic in spl_kmem_cache_free I don't know if this is a known issue or has been reported. I have been getting one or two kernel panics per day on average. Here is an example of a kernel panic. I don't always have the opportunity to take a screenshot of the kernel panic because ...
这段代码是Linux内核中的一部分,用于处理缓存的释放操作。具体功能如下: static __always_inline void __cache_free(struct kmem_cache *cachep, void *objp,
allocated by `kmem_cache_alloc` can be freed with `kmem_cache_free`, `kfree` or `kvfree`, where the latter two might be more convenient thanks to not needing the kmem_cache pointer. The same rules apply to _bulk and _rcu flavors of freeing functions. Memory allocated by `vmalloc` ca...
kmem_cache_destroy()"), it is not necessary to use call_rcu when the callback only performs kmem_cache_free. Use kfree_rcu() directly. The changes were done using the following Coccinelle semantic patch. This semantic patch is designed to ignore cases where the callback ...
> -static void free_pte_rcu(struct rcu_head *head) > -{ > - struct hpte_cache *pte = container_of(head, struct hpte_cache, > rcu_head); > - kmem_cache_free(hpte_cache, pte); > -} > - > static void invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte) ...