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authorAndi Kleen <andi@firstfloor.org>2010-01-15 17:01:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-16 12:15:38 -0800
commit5dab600e6a153ceb64832f608069e6c08185411a (patch)
tree866d05be2255bd4f0c146534741b10c60afe9b79 /include
parentd994ffc247f7c4a48b848f10c4c01c9b06411ada (diff)
downloadlinux-linaro-android-5dab600e6a153ceb64832f608069e6c08185411a.tar.gz
kfifo: document everywhere that size has to be power of two
On my first try using them I missed that the fifos need to be power of two, resulting in a runtime bug. Document that requirement everywhere (and fix one grammar bug) Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Stefani Seibold <stefani@seibold.net> Cc: Roland Dreier <rdreier@cisco.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Andy Walls <awalls@radix.net> Cc: Vikram Dhillon <dhillonv10@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kfifo.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index c8618243ca5..6f6c5f300af 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -67,7 +67,7 @@ struct kfifo {
/**
* DECLARE_KFIFO - macro to declare a kfifo and the associated buffer
* @name: name of the declared kfifo datatype
- * @size: size of the fifo buffer
+ * @size: size of the fifo buffer. Must be a power of two.
*
* Note1: the macro can be used inside struct or union declaration
* Note2: the macro creates two objects:
@@ -91,7 +91,7 @@ union { \
/**
* DEFINE_KFIFO - macro to define and initialize a kfifo
* @name: name of the declared kfifo datatype
- * @size: size of the fifo buffer
+ * @size: size of the fifo buffer. Must be a power of two.
*
* Note1: the macro can be used for global and local kfifo data type variables
* Note2: the macro creates two objects: