alloc.aspect

/* The functions which has first parameter gfp_t. 第一个参数为gfp_t的函数，分为两类切点ARG_1和ARG_2_1. __get_free_pages()*/
/*切点ARG_1，表示程序中具有如下三个特征之一的地方：调用返回值为unsigned long的__get_free_pages方法（不考虑参数个数）；运行方法体static inline struct page * alloc_pages(..); 调用 struct *page *alloc_page_vma(..). */
pointcut ARG_1: call(unsigned long (..))
        || execution(static inline struct page *(..))
	|| call(struct page *(..))
/*切点ARG_2_1, 表示程序中具有如下特征之一的部分：1，运行方法 static inline void *kmalloc(..); 2,运行方法static inline struct sk_buff *alloc_skb(..); 3,运行方法static inline struct sk_buff *alloc_skb_fclone(..). ......*/
pointcut ARG_2_1: execution(static inline void *(..))
	|| execution(static inline struct sk_buff *alloc_skb(..))
	|| execution(static inline struct sk_buff *alloc_skb_fclone(..))
	|| call(struct sk_buff *skb_copy(..))
	|| execution(static inline struct sk_buff *skb_share_check(..))
	|| call(struct sk_buff *skb_clone(..))
	|| execution(static inline struct sk_buff *skb_unshare(..))
/* __dev_alloc_skb calls alloc_skb so we don't need to instrument it. */
	|| execution(static inline struct page *__netdev_alloc_page(..))
	|| call(int usb_submit_urb(..))
	|| call(struct urb *usb_alloc_urb(..))
/* This is rather optional for SLAB memory subsystem, just for SLUB. */
	|| execution(static inline void *kmalloc_node(..))
/* This function isn't static inline and has no body to be instrumented among related to a driver files. So instrument calls to it. */
	|| call(void *kmem_cache_alloc(..))
	|| call(void *mempool_alloc(..))
	|| call(void *dma_pool_alloc(..))

/* Separate weaving of kzalloc bacause it should not call kmalloc in the body */
pointcut ARG_2_2: execution(static inline void *(..))
	|| execution(static inline void *kzalloc_node(..))
	|| execution(static inline void *kmem_cache_zalloc(..))

/* Separate this set of functions from the above one since they has third parameter gfp_t. */
pointcut ARG_3: execution(static inline void *(..))
	|| call(void * krealloc(..))
	|| call(struct sk_buff *__netdev_alloc_skb(..))
	|| call(void *usb_alloc_coherent(..))
	|| call(int mempool_resize(..))

/* The functions that has fourth parameter gfp_t. */
pointcut ARG_4: call(int (..))/*skb is 'socket buffer'*/
	|| call(struct sk_buff *skb_copy_expand(..))
	|| execution(static inline void *dma_zalloc_coherent(..))
	|| execution(static inline void *dma_alloc_coherent(..))

/* The functions without parameter gfp_t. Implicit flag GFP_KERNEL.没有参数gfp_t,默认GFP_KERNEL*/
pointcut ARG_0: call(void *(..))
	|| call(void *(..))
	|| call(void *(..))
	|| call(void *vmalloc_node(..))
	|| call(void *vzalloc_node(..))
	|| call(void *vmalloc_exec(..))
	|| call(void *vmalloc_32(..))
	|| call(void *vmalloc_32_user(..))

pointcut alloc_pages: define((gfp_mask, order))

pointcut alloc_page_vma: define((gfp_mask, vma, addr))