[PATCH 1/2] Add thread_info_cache_init() to all archs

Benjamin Herrenschmidt benh at kernel.crashing.org
Thu May 22 06:38:20 EST 2008

On Wed, 2008-05-21 at 21:06 +0200, Sam Ravnborg wrote:
> It was discussed to add some run-time checks for this issue.
> But the examples given were a bit fluffy so I never integrated
> anything
> i kbuild to detect this.
> As this is only a bug for const weak functions they could be made
> non-const
> if they are seldomly used?

With the asm("") trick ?

I suppose, but I'm also happy to just reject the bad gcc...

It shouldn't be too hard to do a test case made of 2 files.


int foo(void)


int foo(void) __weak

int main(void)
	return 0;

And check for "good" in the output of said program..

Can somebody test that ? Luke, you have a broken compiler, can you make
up some test that could be integrated in the kernel build system
easily ?

(I'm travelling right now, no time to play much with it myself).


More information about the Linuxppc-dev mailing list