linux-kernel - Re: linux-next: build failure after merge of the mm tree

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Date: Thu, 15 Feb 2024 14:47:36 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Oscar Salvador <osalvador@...e.de>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree

Hi Andrew,

On Wed, 14 Feb 2024 07:19:38 -0800 Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Wed, 14 Feb 2024 14:57:19 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> 
> > After merging the mm tree, today's linux-next build (sparc defconfig)
> > failed like this:
> > 
> > In file included from include/linux/page_ext.h:7,
> >                  from include/linux/mm.h:22,
> >                  from fs/sysfs/file.c:18:
> > include/linux/stackdepot.h:59:39: error: 'CONFIG_STACKDEPOT_MAX_FRAMES' undeclared here (not in a function)
> >    59 |                 unsigned long entries[CONFIG_STACKDEPOT_MAX_FRAMES];    /* Frames */
> >       |                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > 
> > (and many more)
> > 
> > Caused by commit
> > 
> >   18d4230bb372 ("lib/stackdepot: move stack_record struct definition into the header")  
> 
> Thanks, I'll try this.
> 
> 
> --- a/include/linux/stackdepot.h~lib-stackdepot-move-stack_record-struct-definition-into-the-header-fix
> +++ a/include/linux/stackdepot.h
> @@ -39,6 +39,7 @@ typedef u32 depot_stack_handle_t;
>  #define DEPOT_POOL_INDEX_BITS (DEPOT_HANDLE_BITS - DEPOT_OFFSET_BITS - \
>  			       STACK_DEPOT_EXTRA_BITS)
>  
> +#ifdef CONFIG_STACKDEPOT
>  /* Compact structure that stores a reference to a stack. */
>  union handle_parts {
>  	depot_stack_handle_t handle;
> @@ -73,6 +74,7 @@ struct stack_record {
>  		};
>  	};
>  };
> +#endif
>  
>  typedef u32 depot_flags_t;
>  
> _
> 

Works for me.

-- 
Cheers,
Stephen Rothwell

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