On Thu, Jan 15, 2009 at 11:55:40AM +0000, Catalin Marinas wrote:
> On Thu, 2009-01-15 at 12:20 +0100, Heiko Carstens wrote:
> > On Thu, Jan 15, 2009 at 04:05:04PM +0530, Kamalesh Babulal wrote:
> > > Hi Stephen,
> > >
> > > next-20090115 allyesconfig build fails on s390x
> > >
> > > mm/built-in.o: In function `kmemleak_scan':
> > > mm/kmemleak.c:977: undefined reference to `_sdata'
> > > make: *** [.tmp_vmlinux1] Error 1
> >
> > A lot of architectures don't have _sdata definined in their linker scripts.
> > On s390 _sdata would be the same as _etext. But that is not necessarily true
> > for all architectures.
>
> Kmemleak has only been tested on ARM and x86. I can add patches for the
> other architectures so that the compilation is fine but can't really run
> such kernels.
That would be nice. Fixing it so that it actually works (_if_ it does not)
can still be done later.
Btw. you have
/*
* Stop the automatic memory scanning thread. This function must be called
* with the kmemleak_mutex held.
*/
void stop_scan_thread(void)
{
...
but call the function unlocked from kmemleak_write. Looks like a bug ;)
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