diff options
Diffstat (limited to 'include/linux/kfifo.h')
| -rw-r--r-- | include/linux/kfifo.h | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index bc7a1f5bb0ce..8f3369ec528b 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -304,19 +304,25 @@ __kfifo_uint_must_check_helper( \ ) /** - * kfifo_skip - skip output data + * kfifo_skip_count - skip output data * @fifo: address of the fifo to be used + * @count: count of data to skip */ -#define kfifo_skip(fifo) \ -(void)({ \ +#define kfifo_skip_count(fifo, count) do { \ typeof((fifo) + 1) __tmp = (fifo); \ const size_t __recsize = sizeof(*__tmp->rectype); \ struct __kfifo *__kfifo = &__tmp->kfifo; \ if (__recsize) \ __kfifo_skip_r(__kfifo, __recsize); \ else \ - __kfifo->out++; \ -}) + __kfifo->out += (count); \ +} while(0) + +/** + * kfifo_skip - skip output data + * @fifo: address of the fifo to be used + */ +#define kfifo_skip(fifo) kfifo_skip_count(fifo, 1) /** * kfifo_peek_len - gets the size of the next fifo record @@ -790,17 +796,10 @@ __kfifo_int_must_check_helper( \ * Note that with only one concurrent reader and one concurrent * writer, you don't need extra locking to use these macros. */ -#define kfifo_dma_out_finish(fifo, len) \ -(void)({ \ - typeof((fifo) + 1) __tmp = (fifo); \ - unsigned int __len = (len); \ - const size_t __recsize = sizeof(*__tmp->rectype); \ - struct __kfifo *__kfifo = &__tmp->kfifo; \ - if (__recsize) \ - __kfifo_skip_r(__kfifo, __recsize); \ - else \ - __kfifo->out += __len / sizeof(*__tmp->type); \ -}) +#define kfifo_dma_out_finish(fifo, len) do { \ + typeof((fifo) + 1) ___tmp = (fifo); \ + kfifo_skip_count(___tmp, (len) / sizeof(*___tmp->type)); \ +} while (0) /** * kfifo_out_peek - gets some data from the fifo |