Struct kfifo
Webint __kfifo_alloc ( struct __kfifo *fifo, unsigned int size, size_t esize, gfp_t gfp_mask) { /* * round up to the next power of 2, since our 'let the indices * wrap' technique works only in … WebJun 12, 2012 · kfifo 定义在 include/linux/kfifo.h 头文件中，我们经常使用的就是 kfifo 结构，看看它的定义： struct kfifo { unsigned char *buffer; /* the buffer holding the data */ unsigned int size; /* the size of the allocated buffer */ unsigned int in; /* data is added at offset (in % size) */ unsigned int out; /* data is extracted from off. (out % size) */ };
Struct kfifo
Did you know?
WebOnce the object has been registered, it may access the common fields of the object, like the lock and the list of devices: int driver_for_each_dev (struct device_driver *drv, void *data, int (*callback) (struct device *dev, void *data)); The devices field is a list of all the devices that have been bound to the driver. WebApr 12, 2024 · 链表通常由若干节点组成，每个节点的结构都是一样的，由有效数据区和指针区两部分组成。struct list_head数据结构不包含链表节点的数据区，通常是嵌入其他数据 …
WebCurrently we offer equity-backed assets - including the entire S&P 500 - and have the capability to deliver additional advanced digital-assets in the future. Our tokens allow … WebApr 16, 2012 · The #define __STRUCT_KFIFO_COMMON (datatype, recsize, ptrtype) is a macro to define a union. It could be used for any kind of declaration, e.g. typedef __STRUCT_KFIFO_COMMON (int, 64, int*) IntFiFo; to define a union type (alias) or static __STRUCT_KFIFO_COMMON (int, 64, int*) intFiFo; to declare a static variable.
WebMessages sorted by: [ date ] [ thread ] [ subject ] [ author ] This patch add lock-less support for kfifo writer side amongst. different contexts on one CPU, such as NMI, IRQ, soft_irq, process, etc. This makes kfifo can be used to implement per-CPU lock-less data. structure. The different contexts on one CPU have some kind of preemption. Web13.12.2009 First implementation of a type safe fifo implementation, called kqueue There are different types of a fifo which can not handled in C without a lot of overhead. So i decided to write the API as a set of macros, which is the only way to do a kind of template meta programming without C++.
WebAug 19, 2009 · A kfifo is declared using the DECLARE_KFIFO() macro which can be used inside of a struct or union declaration. FIFOs declared with with DECLARE_KFIFO() must …
Webkfifo_to_user - gets data from the FIFO and write it to user space SYNOPSIS. int kfifo_to_user (struct kfifo * fifo, void __user * to, unsigned int len, unsigned * lenout); ARGUMENTS. fifo the fifo to be used. to where the data must be copied. len the size of the destination buffer. lenout pointer to output variable with copied data DESCRIPTION. hack the mainframe dbdWebJan 5, 2024 · 一、队列概述. 任何操作系统内核都少不了一种编程模型：生产者和消费者。. 在该模式中，生产者创建数据（比如说需要读取的错误信息或者需要处理的网络包），而 … hack the laptop that teaches kids to codeWebkfifo int kfifo_alloc(struct kfifo *fifo, unsigned int size, gfp_t gfp_mask) Creates a kfifo size must be a power of two static inline void kfifo_reset(struct kfifo *fifo) Removes all … brain injury programs coloradoWebApr 11, 2024 · 该函数创建并分配一个大小为size的KFIFO环形缓冲区。第一个参数fifo是指向该环形缓冲区的struct kfifo数据结构；第二个参数size是指定缓冲区元素的数量；第三个参数gfp_mask表示分配KFIFO元素使用的分配掩码。 静态分配可以使用如下的宏。 hackthemenu.comWebAug 9, 2009 · This is a series of patches which makes the kfifo API more generic. This patch does reorganize the current kfifo to be ready for extensions. The following changes are applied: - move out spinlock of the struct kfifo because most users don't need it - struct kfifo not longer be dynamically allocated. - replace kfifo_put () by kfifo_put_locked ... hack the laptopbrain injury of football playersWebHi. I just added support for user space buffers in kfifo. I found useful __kfifo_get_user to copy data to a user buffer in a read call. I didn't brain injury personality changes