from <linux/kfifo.h>:
#define DECLARE_KFIFO(name, size) \
union { \
struct kfifo name; \
unsigned char name##kfifo_buffer[size + sizeof(struct kfifo)]; \
}
...
#define INIT_KFIFO(name) \
name = __kfifo_initializer(sizeof(name##kfifo_buffer) - \
sizeof(struct kfifo), name##kfifo_buffer)
...
#define DEFINE_KFIFO(name, size) \
unsigned char name##kfifo_buffer[size]; \
struct kfifo name = __kfifo_initializer(size, name##kfifo_buffer)
...
but the surrounding comments imply that all kfifo sizes *must* be a
power of two, yet i see no enforcement of that restriction. and,
AFAICT, there is absolutely *no* usage of any of those macros anywhere
in the source tree. the current kfifo routines appear to be
implemented in kernel/kfifo.c, so what is the value of those KFIFO
macros?
rday
--
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Kernel Pedantry.
Web page: http://crashcourse.ca
Twitter: http://twitter.com/rpjday
========================================================================
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