On Wed, Jul 27, 2005 at 10:59:35AM -0400, Kimball Murray wrote:
> Jens Axboe wrote:
>
> >On Tue, Jul 26 2005, Adrian Bunk wrote:
> >
> >
> >>"extern inline" doesn't make much sense.
> >>
> >>
> >
> >Yep, thanks.
> >
> >
> >
> IIRC, there was a time when the extern inline construct was used to
> catch cases where the compiler did not inline the function (you'd get a
> link error). Seems like it still works. Try building the attached
> files in each of the following ways:
>
> gcc -o foo foo.c
>
> and
>
> gcc -O2 -o foo foo.c
>
> In the first case, you get a link error, because there is no inlining.
In the kernel, we have a
# define inline inline __attribute__((always_inline))
This doesn't leave gcc any choice to not inline the function.
> -kimball
> #include "bar.h"
>
> void foo(void) {
> bar();
> }
>
> int main(int argc, char *argv[])
> {
> foo();
> return 0;
> }
> extern inline void bar(void)
> {
> }
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
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