linux-kernel - Re: [PATCH v3 06/11] powerpc/ptdump: rename "struct pgtable_level" to "struct ptdump

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Message-ID: <87a53mqc86.fsf@gmail.com>
Date: Tue, 26 Aug 2025 21:58:09 +0530
From: Ritesh Harjani (IBM) <ritesh.list@...il.com>
To: David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org, xen-devel@...ts.xenproject.org, 
	linux-fsdevel@...r.kernel.org, nvdimm@...ts.linux.dev, 
	linuxppc-dev@...ts.ozlabs.org, David Hildenbrand <david@...hat.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Madhavan Srinivasan <maddy@...ux.ibm.com>, 
	Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, 
	Christophe Leroy <christophe.leroy@...roup.eu>, Juergen Gross <jgross@...e.com>, 
	Stefano Stabellini <sstabellini@...nel.org>, 
	Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>, Dan Williams <dan.j.williams@...el.com>, 
	Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.cz>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, 
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
	Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>, Suren Baghdasaryan <surenb@...gle.com>, 
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	Oscar Salvador <osalvador@...e.de>, Lance Yang <lance.yang@...ux.dev>
Subject: Re: [PATCH v3 06/11] powerpc/ptdump: rename "struct pgtable_level" to "struct ptdump_pglevel"

David Hildenbrand <david@...hat.com> writes:

> We want to make use of "pgtable_level" for an enum in core-mm. Other
> architectures seem to call "struct pgtable_level" either:
> * "struct pg_level" when not exposed in a header (riscv, arm)
> * "struct ptdump_pg_level" when expose in a header (arm64)
>
> So let's follow what arm64 does.
>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  arch/powerpc/mm/ptdump/8xx.c      | 2 +-
>  arch/powerpc/mm/ptdump/book3s64.c | 2 +-
>  arch/powerpc/mm/ptdump/ptdump.h   | 4 ++--
>  arch/powerpc/mm/ptdump/shared.c   | 2 +-
>  4 files changed, 5 insertions(+), 5 deletions(-)


As mentioned in commit msg mostly a mechanical change to convert 
"struct pgtable_level" to "struct ptdump_pg_level" for aforementioned purpose.. 

The patch looks ok and compiles fine on my book3s64 and ppc32 platform. 

I think we should fix the subject line.. s/ptdump_pglevel/ptdump_pg_level

Otherwise the changes looks good to me. So please feel free to add - 
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>



>
> diff --git a/arch/powerpc/mm/ptdump/8xx.c b/arch/powerpc/mm/ptdump/8xx.c
> index b5c79b11ea3c2..4ca9cf7a90c9e 100644
> --- a/arch/powerpc/mm/ptdump/8xx.c
> +++ b/arch/powerpc/mm/ptdump/8xx.c
> @@ -69,7 +69,7 @@ static const struct flag_info flag_array[] = {
>  	}
>  };
>  
> -struct pgtable_level pg_level[5] = {
> +struct ptdump_pg_level pg_level[5] = {
>  	{ /* pgd */
>  		.flag	= flag_array,
>  		.num	= ARRAY_SIZE(flag_array),
> diff --git a/arch/powerpc/mm/ptdump/book3s64.c b/arch/powerpc/mm/ptdump/book3s64.c
> index 5ad92d9dc5d10..6b2da9241d4c4 100644
> --- a/arch/powerpc/mm/ptdump/book3s64.c
> +++ b/arch/powerpc/mm/ptdump/book3s64.c
> @@ -102,7 +102,7 @@ static const struct flag_info flag_array[] = {
>  	}
>  };
>  
> -struct pgtable_level pg_level[5] = {
> +struct ptdump_pg_level pg_level[5] = {
>  	{ /* pgd */
>  		.flag	= flag_array,
>  		.num	= ARRAY_SIZE(flag_array),
> diff --git a/arch/powerpc/mm/ptdump/ptdump.h b/arch/powerpc/mm/ptdump/ptdump.h
> index 154efae96ae09..4232aa4b57eae 100644
> --- a/arch/powerpc/mm/ptdump/ptdump.h
> +++ b/arch/powerpc/mm/ptdump/ptdump.h
> @@ -11,12 +11,12 @@ struct flag_info {
>  	int		shift;
>  };
>  
> -struct pgtable_level {
> +struct ptdump_pg_level {
>  	const struct flag_info *flag;
>  	size_t num;
>  	u64 mask;
>  };
>  
> -extern struct pgtable_level pg_level[5];
> +extern struct ptdump_pg_level pg_level[5];
>  
>  void pt_dump_size(struct seq_file *m, unsigned long delta);
> diff --git a/arch/powerpc/mm/ptdump/shared.c b/arch/powerpc/mm/ptdump/shared.c
> index 39c30c62b7ea7..58998960eb9a4 100644
> --- a/arch/powerpc/mm/ptdump/shared.c
> +++ b/arch/powerpc/mm/ptdump/shared.c
> @@ -67,7 +67,7 @@ static const struct flag_info flag_array[] = {
>  	}
>  };
>  
> -struct pgtable_level pg_level[5] = {
> +struct ptdump_pg_level pg_level[5] = {
>  	{ /* pgd */
>  		.flag	= flag_array,
>  		.num	= ARRAY_SIZE(flag_array),
> -- 
> 2.50.1