liangbowen wrote:
maybe you've misunderstood my meaning. I mean the whole <asm/
semaphore.h> header file has only 4 lines of code in total:
#ifndef I386_SEMAPHORE_H
#define I386_SEMAPHORE_H
#include <linux/linkage.h>
#endif
it's supposed to have more codes than that. like
struct semaphore {
int count;
int waking;
int lock ; /* to make waking testing atomic */
struct wait_queue * wait;
};
and the down(), up() functions.
but I can't see any of those codes, not even the #ifdef __KERNEL__
macro.
It does in the kernel version of that header. The userspace version of
that header has everything inside #ifdef __KERNEL__ stripped out.
--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/
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