Struct kfifo
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 … Webstatic DEFINE_MUTEX (write_lock); /* * struct kfifo_rec_ptr_1 and STRUCT_KFIFO_REC_1 can handle records of a * length between 0 and 255 bytes. * * struct kfifo_rec_ptr_2 and …
Struct kfifo
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Web69 static int iio_get_bytes_per_datum_kfifo(struct iio_buffer *r) 70 {71 return r->bytes_per_datum; 72} 73. 74 static int iio_mark_update_needed_kfifo(struct iio_buffer *r) 75 {76 struct iio_kfifo *kf = iio_to_kfifo(r); 77 kf->update_needed = true; 78 ... WebAug 12, 2024 · On media, we now have an struct declared with: struct lirc_fh { struct list_head list; struct rc_dev *rc; int carrier_low; bool send_timeout_reports; DECLARE_KFIFO_PTR(rawir, unsigned int); DECLARE_KFIFO_PTR(scancodes, struct lirc_scancode); wait_queue_head_t wait_poll; u8 send_mode; u8 rec_mode; }; gpiolib.c has …
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) */ }; WebApr 14, 2024 · 之前驱动开发者经常使用该文件系统来对驱动进行调试，但是随着 proc 文件系统里的内容增多，已不推荐这种方式，对硬件来讲，取而代之的是 sysfs 文件系统，后面会进行学习。. 不过某些时候，驱动开发者还是会使用这个接口，比如只想查看当前的串口波特率 …
Webkfifo 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 … Web+extern unsigned int __kfifo_in_n(struct kfifo *fifo, + const unsigned char *from, unsigned int n, unsigned int recsize); + +extern unsigned int __kfifo_in_generic(struct kfifo *fifo, + const unsigned char *from, unsigned int n, unsigned int recsize); + +static inline unsigned int __kfifo_in_rec(struct kfifo *fifo,
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.
WebNov 13, 2024 · 一、kfifo概述 kfifo是一种"First In First Out "数据结构，它采用了前面提到的环形缓冲区来实现，提供一个无边界的字节流服务。采用环形缓冲区的好处为，当一个数据元素被用掉后，其余数据元素不需要移动其存储位置，从而减少拷贝提高效率。更重要的是，kfifo采用了并行无锁技术，kfifo实现的单生产 ... fly away softwareWebImplementation-wise, the head and tail indices should *not* be constrained to be less than the size of the buffer. They should be allowed to wrap all the way back to zero. This allows … greenhouse effect national geographicWebdma-example.c « kfifo « samples - ti-linux-kernel/ti-linux-kernel - This repo contains a Linux kernel that has been integrated with outstanding TI open source patches based on the open source Linux kernel found at kernel.org. Contributions to this kernel need to be sent to the open source community for review. greenhouse effect long wave radiationWebImplementation-wise, the head and tail indices should *not* be constrained to be less than the size of the buffer. They should be allowed to wrap all the way back to zero. This allows you to distinguish between the completely-empty and completely-full states while using 100% of the storage. greenhouse effect on marsWeb1 struct kfifo *kfifo_init (unsigned char *buffer, unsigned int size, 2 gfp_t gfp_mask, spinlock_t *lock) 3 { 4 struct kfifo *fifo; 6 /* size must be a power of 2 */ 7 BUG_ON (!is_power_of_2 (size)); 9 fifo = kmalloc (sizeof (struct kfifo), gfp_mask); 10 if (!fifo) 11 return ERR_PTR (-ENOMEM); 13 fifo->buffer = buffer; 14 fifo->size = size; 15 … greenhouse effect on human healthWebstruct kfifo *fifo. The fifo to read the data from. Description. Transfers the data contained in the fifo to the buffer, removing it from the fifo. This function will try to transfer as much … greenhouse effect powerpointWebfifo = kmalloc (sizeof (struct kfifo), gfp_mask); if (!fifo) return ERR_PTR (-ENOMEM); fifo->buffer = buffer; fifo->size = size; fifo->in = fifo->out = 0; fifo->lock = lock; return fifo; } EXPORT_SYMBOL (kfifo_init); /** * kfifo_alloc - allocates a new FIFO and its internal buffer * @size: the size of the internal buffer to be allocated. greenhouse effect norsk