Le 21/02/2018 à 17:08, Jonathan Neuschäfer a écrit :
On Wed, Feb 21, 2018 at 07:46:28AM +0800, kbuild test robot wrote:
[...]
include/linux/mmzone.h:1239:19: error: conflicting types for 'pfn_valid'
static inline int pfn_valid(unsigned long pfn)
^~~~~~~~~
In file included from include/linux/mmzone.h:912:0,
from include/linux/gfp.h:6,
from include/linux/mm.h:10,
from include/linux/mman.h:5,
from arch/powerpc/kernel/asm-offsets.c:22:
arch/powerpc/include/asm/mmzone.h:40:19: note: previous definition of 'pfn_valid' was here
static inline int pfn_valid(int pfn)
^~~~~~~~~
make[2]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
Oops, I'll fix this in the next version (and compile-test on ppc64...).
Weirdly enough, x86-32 and parisc define pfn_valid with an int
parameter, too (both of them since the Beginning Of Time, aka.
v2.6.12-rc2).
Behind the fact that the pfn type is different, my understanding is that
you have to define CONFIG_HAVE_ARCH_PFN_VALID in the Kconfig in order to
avoid it being included in include/linux/mmzone.h
Christophe
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