Messages in this thread | | | From | Bjorn Helgaas <> | Date | Wed, 15 Oct 2014 17:38:02 -0600 | Subject | Re: [PATCH v1 09/10] memory-hotplug: Remove "weak" from memory_block_size_bytes() declaration |
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[+cc Rashika, Nathan, Anton, Blanchard, Heiko, Yinghai, Martin, linux-s390; sorry, I botched my "stg mail" so you weren't included the first time. s390 and x86 define their own memory_block_size_bytes() and are at risk for this problem.]
On Wed, Oct 15, 2014 at 11:06 AM, Bjorn Helgaas <bhelgaas@google.com> wrote: > drivers/base/memory.c provides a default memory_block_size_bytes() > definition explicitly marked "weak". Several architectures provide their > own definitions intended to override the default, but the "weak" attribute > on the declaration applied to the arch definitions as well, so the linker > chose one based on link order (see 10629d711ed7 ("PCI: Remove __weak > annotation from pcibios_get_phb_of_node decl")). > > Remove the "weak" attribute from the declaration so we always prefer a > non-weak definition over the weak one, independent of link order. > > Fixes: 41f107266b19 ("drivers: base: Add prototype declaration to the header file") > Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> > CC: Rashika Kheria <rashika.kheria@gmail.com> > CC: Nathan Fontenot <nfont@austin.ibm.com> > CC: Anton Blanchard <anton@au1.ibm.com> > CC: Heiko Carstens <heiko.carstens@de.ibm.com> > CC: Yinghai Lu <yinghai@kernel.org> > --- > include/linux/memory.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/memory.h b/include/linux/memory.h > index bb7384e3c3d8..8b8d8d12348e 100644 > --- a/include/linux/memory.h > +++ b/include/linux/memory.h > @@ -35,7 +35,7 @@ struct memory_block { > }; > > int arch_get_memory_phys_device(unsigned long start_pfn); > -unsigned long __weak memory_block_size_bytes(void); > +unsigned long memory_block_size_bytes(void); > > /* These states are exposed to userspace as text strings in sysfs */ > #define MEM_ONLINE (1<<0) /* exposed to userspace */ >
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