# Re: \[RFC V3 1/8\] mm: Make ptrval\_to\_str() generally available

- From: Samuel Holland \<samuel.holland@sifive.com\>
- Date: 2026-08-24 15:45:13 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2026/08/17454437
- Thread: https://ratatoskr.run/linux-alpha/2026/08/17426829/t.md

```text
On 2026-08-17 11:00 PM, Anshuman Khandual wrote:
> Move ptrval_to_str() inside a header thus making the helper more generally

Typo here and in subject: ptrval -> ptval

> available for new users which are being added later. While here, also move
> another related string size macro PTVAL_STR_MAX inside the header as well.
> 
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: David Hildenbrand <david@kernel.org>
> Cc: Lorenzo Stoakes <ljs@kernel.org>
> Cc: <redacted>
> Cc: <redacted>
> Signed-off-by: Anshuman Khandual <redacted>
> ---
>  include/linux/mm_types.h | 15 +++++++++++++++
>  mm/memory.c              | 16 ++--------------
>  2 files changed, 17 insertions(+), 14 deletions(-)
> 
> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> index b18c2b2e7d2c..a5b514e55dd7 100644
> --- a/include/linux/mm_types.h
> +++ b/include/linux/mm_types.h
> @@ -2001,4 +2001,19 @@ static inline unsigned long mmf_init_legacy_flags(unsigned long flags)
>  	return flags & MMF_INIT_LEGACY_MASK;
>  }
>  
> +void ptval_bytes_to_hex_str(char *buf, size_t buf_size, const void *entry, size_t entry_size);
> +
> +#define ptval_to_str(buf, val)								\
>...

```