diff options
| author | Andi Kleen <[email protected]> | 2010-01-15 17:01:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2010-01-16 12:15:38 -0800 |
| commit | a5b9e2c1063046421ce01dcf5ddd7ec12567f3e1 (patch) | |
| tree | 09cef2a043af96491497db380abe89af2aee5176 /include/linux | |
| parent | 64ce1037c5434b1d036cd99ecaee6e00496bc2e9 (diff) | |
kfifo: add kfifo_out_peek
In some upcoming code it's useful to peek into a FIFO without permanentely
removing data. This patch implements a new kfifo_out_peek() to do this.
Signed-off-by: Andi Kleen <[email protected]>
Acked-by: Stefani Seibold <[email protected]>
Cc: Roland Dreier <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: Andy Walls <[email protected]>
Cc: Vikram Dhillon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/kfifo.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 86ad50a900c8..7ad6d32dd673 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -113,6 +113,9 @@ extern unsigned int kfifo_in(struct kfifo *fifo, const void *from, unsigned int len); extern __must_check unsigned int kfifo_out(struct kfifo *fifo, void *to, unsigned int len); +extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo, + void *to, unsigned int len, unsigned offset); + /** * kfifo_reset - removes the entire FIFO contents |