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[PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.

Zi Yan posted 3 patches 6 months ago
There is a newer version of this series
[PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by Zi Yan 6 months ago 
They are useful information for debugging split huge page tests.

Signed-off-by: Zi Yan <ziy@nvidia.com>
---
 mm/huge_memory.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 2b4ea5a2ce7d..ebf875928bac 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -4327,8 +4327,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
 		goto out;
 	}
 
-	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
-		 pid, vaddr_start, vaddr_end);
+	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
+		 pid, vaddr_start, vaddr_end, new_order, in_folio_offset);
 
 	mmap_read_lock(mm);
 	/*
@@ -4438,8 +4438,8 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
 	if (IS_ERR(candidate))
 		goto out;
 
-	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx]\n",
-		 file_path, off_start, off_end);
+	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
+		 file_path, off_start, off_end, new_order, in_folio_offset);
 
 	mapping = candidate->f_mapping;
 	min_order = mapping_min_folio_order(mapping);
-- 
2.47.2
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by David Hildenbrand 6 months ago 
On 08.08.25 21:01, Zi Yan wrote:
> They are useful information for debugging split huge page tests.
> 
> Signed-off-by: Zi Yan <ziy@nvidia.com>
> ---
>   mm/huge_memory.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 2b4ea5a2ce7d..ebf875928bac 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -4327,8 +4327,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
>   		goto out;
>   	}
>   
> -	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
> -		 pid, vaddr_start, vaddr_end);
> +	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 pid, vaddr_start, vaddr_end, new_order, in_folio_offset);
>   
>   	mmap_read_lock(mm);
>   	/*
> @@ -4438,8 +4438,8 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
>   	if (IS_ERR(candidate))
>   		goto out;
>   
> -	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx]\n",
> -		 file_path, off_start, off_end);
> +	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 file_path, off_start, off_end, new_order, in_folio_offset);
>   
>   	mapping = candidate->f_mapping;
>   	min_order = mapping_min_folio_order(mapping);

Acked-by: David Hildenbrand <david@redhat.com>

-- 
Cheers,

David / dhildenb
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by Barry Song 6 months ago 
On Sat, Aug 9, 2025 at 3:02 AM Zi Yan <ziy@nvidia.com> wrote:
>
> They are useful information for debugging split huge page tests.
>
> Signed-off-by: Zi Yan <ziy@nvidia.com>

LGTM.
Reviewed-by: Barry Song <baohua@kernel.org>

> ---
>  mm/huge_memory.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 2b4ea5a2ce7d..ebf875928bac 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -4327,8 +4327,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
>                 goto out;
>         }
>
> -       pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
> -                pid, vaddr_start, vaddr_end);
> +       pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +                pid, vaddr_start, vaddr_end, new_order, in_folio_offset);
>
>         mmap_read_lock(mm);
>         /*
> @@ -4438,8 +4438,8 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
>         if (IS_ERR(candidate))
>                 goto out;
>
> -       pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx]\n",
> -                file_path, off_start, off_end);
> +       pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +                file_path, off_start, off_end, new_order, in_folio_offset);
>
>         mapping = candidate->f_mapping;
>         min_order = mapping_min_folio_order(mapping);
> --
> 2.47.2
>

Thanks
Barry
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by Baolin Wang 6 months ago 

On 2025/8/9 03:01, Zi Yan wrote:
> They are useful information for debugging split huge page tests.
> 
> Signed-off-by: Zi Yan <ziy@nvidia.com>
> ---

LGTM.
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>

>   mm/huge_memory.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 2b4ea5a2ce7d..ebf875928bac 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -4327,8 +4327,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
>   		goto out;
>   	}
>   
> -	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
> -		 pid, vaddr_start, vaddr_end);
> +	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 pid, vaddr_start, vaddr_end, new_order, in_folio_offset);
>   
>   	mmap_read_lock(mm);
>   	/*
> @@ -4438,8 +4438,8 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
>   	if (IS_ERR(candidate))
>   		goto out;
>   
> -	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx]\n",
> -		 file_path, off_start, off_end);
> +	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 file_path, off_start, off_end, new_order, in_folio_offset);
>   
>   	mapping = candidate->f_mapping;
>   	min_order = mapping_min_folio_order(mapping);
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by wang lian 6 months ago 
> They are useful information for debugging split huge page tests.

> Signed-off-by: Zi Yan <ziy@nvidia.com>
> ---

Yes. LGTM.
Reviewed-by: wang lian <lianux.mm@gmail.com>

Best regards,
wang lian
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by Donet Tom 6 months ago 
On 8/9/25 12:31 AM, Zi Yan wrote:
> They are useful information for debugging split huge page tests.
>
> Signed-off-by: Zi Yan <ziy@nvidia.com>
> ---
>   mm/huge_memory.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 2b4ea5a2ce7d..ebf875928bac 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -4327,8 +4327,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
>   		goto out;
>   	}
>   
> -	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
> -		 pid, vaddr_start, vaddr_end);
> +	pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 pid, vaddr_start, vaddr_end, new_order, in_folio_offset);
>   
>   	mmap_read_lock(mm);
>   	/*
> @@ -4438,8 +4438,8 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
>   	if (IS_ERR(candidate))
>   		goto out;
>   
> -	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx]\n",
> -		 file_path, off_start, off_end);
> +	pr_debug("split file-backed THPs in file: %s, page offset: [0x%lx - 0x%lx], new_order: %u, in_folio_offset: %ld\n",
> +		 file_path, off_start, off_end, new_order, in_folio_offset);
>   

LGTM

Reviewed by : Donet Tom <donettom@linux.ibm.com>

>   	mapping = candidate->f_mapping;
>   	min_order = mapping_min_folio_order(mapping);
Re: [PATCH v2 1/3] mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug.
Posted by Wei Yang 6 months ago 
On Fri, Aug 08, 2025 at 03:01:42PM -0400, Zi Yan wrote:
>They are useful information for debugging split huge page tests.
>
>Signed-off-by: Zi Yan <ziy@nvidia.com>

Reviewed-by: Wei Yang <richard.weiyang@gmail.com>

-- 
Wei Yang
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