Re: [PATCH v1 05/10] MIPS: MT: Move "weak" from vpe_run() declaration to definition

From: Bjorn Helgaas
Date: Wed Oct 15 2014 - 19:29:15 EST


[+cc linux-mips]

On Wed, Oct 15, 2014 at 11:06 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> When the "weak" attribute is on a declaration in a header file, every
> definition where the header is included becomes weak, and the linker
> chooses one definition based on link order (see 10629d711ed7 ("PCI: Remove
> __weak annotation from pcibios_get_phb_of_node decl")).
>
> Move the "weak" attribute from the declaration to the default definition so
> we always prefer a non-weak definition over the weak one, independent of
> link order.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> CC: linux-mips@xxxxxxxxxxxxxx
> ---
> arch/mips/include/asm/vpe.h | 2 +-
> arch/mips/kernel/vpe-mt.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/mips/include/asm/vpe.h b/arch/mips/include/asm/vpe.h
> index 7849f3978fea..80e70dbd1f64 100644
> --- a/arch/mips/include/asm/vpe.h
> +++ b/arch/mips/include/asm/vpe.h
> @@ -122,7 +122,7 @@ void release_vpe(struct vpe *v);
> void *alloc_progmem(unsigned long len);
> void release_progmem(void *ptr);
>
> -int __weak vpe_run(struct vpe *v);
> +int vpe_run(struct vpe *v);
> void cleanup_tc(struct tc *tc);
>
> int __init vpe_module_init(void);
> diff --git a/arch/mips/kernel/vpe-mt.c b/arch/mips/kernel/vpe-mt.c
> index 2e003b11a098..0e5899a2cd96 100644
> --- a/arch/mips/kernel/vpe-mt.c
> +++ b/arch/mips/kernel/vpe-mt.c
> @@ -23,7 +23,7 @@ static int major;
> static int hw_tcs, hw_vpes;
>
> /* We are prepared so configure and start the VPE... */
> -int vpe_run(struct vpe *v)
> +int __weak vpe_run(struct vpe *v)
> {
> unsigned long flags, val, dmt_flag;
> struct vpe_notifications *notifier;
>
--
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