Re: problem with <asm/semaphore.h>

[Robert Hancock <hancockr@shaw.ca>]

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
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

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