Re: AW: Possible problem in asm/bitops.h

[Paul Mackerras <paulus@samba.org>]

Georg Klug writes:

> Oops, I thought, that the directories /usr/include/linux as well as
> /usr/include/asm should come directly from the kernel (either as a copy

That is how it used to be done, but that way of doing things has been
deprecated for a long time now.  /usr/include/{linux,asm} are part of
glibc these days.

> or symbolically linked). In that case those include files should always
> be prepared to be included in a userland application. Am I right with this?
>
> I also thought, that the asm-ppc/bitops.h should provide the same
> functionality as its pendant in asm-i386/ which lets userland applications
> use some static inline functions like set_bit() clear_bit() and change_bit().
> I actually don't know whether those functions are needed outside the kernel,
> so I cannot tell whether it is correct or not. But IMO it should be done
> the same way on all plattforms. Would you agree?

The policy is the same on all architectures: userland programs should
not include kernel headers.  The architectures differ in the extent to
which this is enforced, that's all.

Paul.

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