linux-kernel - Re: [PATCH 03/30] mm: remove CONFIG_HAVE

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Date:   Wed, 26 Sep 2018 17:34:32 -0700
From:   Alexander Duyck <alexander.duyck@...il.com>
To:     rppt@...ux.vnet.ibm.com
Cc:     linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>, chris@...kel.net,
        David Miller <davem@...emloft.net>,
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        Greg KH <gregkh@...uxfoundation.org>, gxt@....edu.cn,
        Ingo Molnar <mingo@...hat.com>, jejb@...isc-linux.org,
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Subject: Re: [PATCH 03/30] mm: remove CONFIG_HAVE_MEMBLOCK

On Wed, Sep 26, 2018 at 11:32 AM Mike Rapoport <rppt@...ux.vnet.ibm.com> wrote:
>
> On Wed, Sep 26, 2018 at 09:58:41AM -0700, Alexander Duyck wrote:
> > On Fri, Sep 14, 2018 at 5:11 AM Mike Rapoport <rppt@...ux.vnet.ibm.com> wrote:
> > >
> > > All architecures use memblock for early memory management. There is no need
> > > for the CONFIG_HAVE_MEMBLOCK configuration option.
> > >
> > > Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
> >
> > <snip>
> >
> > > diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> > > index 5169205..4ae91fc 100644
> > > --- a/include/linux/memblock.h
> > > +++ b/include/linux/memblock.h
> > > @@ -2,7 +2,6 @@
> > >  #define _LINUX_MEMBLOCK_H
> > >  #ifdef __KERNEL__
> > >
> > > -#ifdef CONFIG_HAVE_MEMBLOCK
> > >  /*
> > >   * Logical memory blocks.
> > >   *
> > > @@ -460,7 +459,6 @@ static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
> > >  {
> > >         return 0;
> > >  }
> > > -#endif /* CONFIG_HAVE_MEMBLOCK */
> > >
> > >  #endif /* __KERNEL__ */
> >
> > There was an #else above this section and I believe it and the code
> > after it needs to be stripped as well.
>
> Right, I've already sent the fix [1] and it's in mmots.
>
> [1] https://lkml.org/lkml/2018/9/19/416
>

Are you sure? The patch you reference appears to be for
drivers/of/fdt.c, and the bit I pointed out here is in
include/linux/memblock.h.

- Alex