diff mbox series

[v2,13/34] mm: Create ptdesc equivalents for pgtable_{pte,pmd}_page_{ctor,dtor}

Message ID 20230501192829.17086-14-vishal.moola@gmail.com (mailing list archive)
State Superseded
Headers show
Series Split ptdesc from struct page | expand

Commit Message

Vishal Moola May 1, 2023, 7:28 p.m. UTC
Creates ptdesc_pte_ctor(), ptdesc_pmd_ctor(), ptdesc_pte_dtor(), and
ptdesc_pmd_dtor() and make the original pgtable constructor/destructors
wrappers.

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
 include/linux/mm.h | 56 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 42 insertions(+), 14 deletions(-)

Comments

Mike Rapoport May 25, 2023, 9:19 a.m. UTC | #1
On Mon, May 01, 2023 at 12:28:08PM -0700, Vishal Moola (Oracle) wrote:
> Creates ptdesc_pte_ctor(), ptdesc_pmd_ctor(), ptdesc_pte_dtor(), and
> ptdesc_pmd_dtor() and make the original pgtable constructor/destructors
> wrappers.

I think pgtable_pXY_ctor/dtor names would be better.
 
> Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
> ---
>  include/linux/mm.h | 56 ++++++++++++++++++++++++++++++++++------------
>  1 file changed, 42 insertions(+), 14 deletions(-)
> 
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 58c911341a33..dc61aeca9077 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -2847,20 +2847,34 @@ static inline bool ptlock_init(struct ptdesc *ptdesc) { return true; }
>  static inline void ptlock_free(struct ptdesc *ptdesc) {}
>  #endif /* USE_SPLIT_PTE_PTLOCKS */
>  
> -static inline bool pgtable_pte_page_ctor(struct page *page)
> +static inline bool ptdesc_pte_ctor(struct ptdesc *ptdesc)
>  {
> -	if (!ptlock_init(page_ptdesc(page)))
> +	struct folio *folio = ptdesc_folio(ptdesc);
> +
> +	if (!ptlock_init(ptdesc))
>  		return false;
> -	__SetPageTable(page);
> -	inc_lruvec_page_state(page, NR_PAGETABLE);
> +	__folio_set_table(folio);
> +	lruvec_stat_add_folio(folio, NR_PAGETABLE);
>  	return true;
>  }
>  
> +static inline bool pgtable_pte_page_ctor(struct page *page)
> +{
> +	return ptdesc_pte_ctor(page_ptdesc(page));
> +}
> +
> +static inline void ptdesc_pte_dtor(struct ptdesc *ptdesc)
> +{
> +	struct folio *folio = ptdesc_folio(ptdesc);
> +
> +	ptlock_free(ptdesc);
> +	__folio_clear_table(folio);
> +	lruvec_stat_sub_folio(folio, NR_PAGETABLE);
> +}
> +
>  static inline void pgtable_pte_page_dtor(struct page *page)
>  {
> -	ptlock_free(page_ptdesc(page));
> -	__ClearPageTable(page);
> -	dec_lruvec_page_state(page, NR_PAGETABLE);
> +	ptdesc_pte_dtor(page_ptdesc(page));
>  }
>  
>  #define pte_offset_map_lock(mm, pmd, address, ptlp)	\
> @@ -2942,20 +2956,34 @@ static inline spinlock_t *pmd_lock(struct mm_struct *mm, pmd_t *pmd)
>  	return ptl;
>  }
>  
> -static inline bool pgtable_pmd_page_ctor(struct page *page)
> +static inline bool ptdesc_pmd_ctor(struct ptdesc *ptdesc)
>  {
> -	if (!pmd_ptlock_init(page_ptdesc(page)))
> +	struct folio *folio = ptdesc_folio(ptdesc);
> +
> +	if (!pmd_ptlock_init(ptdesc))
>  		return false;
> -	__SetPageTable(page);
> -	inc_lruvec_page_state(page, NR_PAGETABLE);
> +	__folio_set_table(folio);
> +	lruvec_stat_add_folio(folio, NR_PAGETABLE);
>  	return true;
>  }
>  
> +static inline bool pgtable_pmd_page_ctor(struct page *page)
> +{
> +	return ptdesc_pmd_ctor(page_ptdesc(page));
> +}
> +
> +static inline void ptdesc_pmd_dtor(struct ptdesc *ptdesc)
> +{
> +	struct folio *folio = ptdesc_folio(ptdesc);
> +
> +	pmd_ptlock_free(ptdesc);
> +	__folio_clear_table(folio);
> +	lruvec_stat_sub_folio(folio, NR_PAGETABLE);
> +}
> +
>  static inline void pgtable_pmd_page_dtor(struct page *page)
>  {
> -	pmd_ptlock_free(page_ptdesc(page));
> -	__ClearPageTable(page);
> -	dec_lruvec_page_state(page, NR_PAGETABLE);
> +	ptdesc_pmd_dtor(page_ptdesc(page));
>  }
>  
>  /*
> -- 
> 2.39.2
> 
>
Vishal Moola May 25, 2023, 6:17 p.m. UTC | #2
On Thu, May 25, 2023 at 2:19 AM Mike Rapoport <rppt@kernel.org> wrote:
>
> On Mon, May 01, 2023 at 12:28:08PM -0700, Vishal Moola (Oracle) wrote:
> > Creates ptdesc_pte_ctor(), ptdesc_pmd_ctor(), ptdesc_pte_dtor(), and
> > ptdesc_pmd_dtor() and make the original pgtable constructor/destructors
> > wrappers.
>
> I think pgtable_pXY_ctor/dtor names would be better.

I have it as ptdesc to keep it consistent with the rest of the functions. I
also think it makes more sense as it's initializing stuff tracked by a ptdesc.

> > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
> > ---
> >  include/linux/mm.h | 56 ++++++++++++++++++++++++++++++++++------------
> >  1 file changed, 42 insertions(+), 14 deletions(-)
> >
> > diff --git a/include/linux/mm.h b/include/linux/mm.h
> > index 58c911341a33..dc61aeca9077 100644
> > --- a/include/linux/mm.h
> > +++ b/include/linux/mm.h
> > @@ -2847,20 +2847,34 @@ static inline bool ptlock_init(struct ptdesc *ptdesc) { return true; }
> >  static inline void ptlock_free(struct ptdesc *ptdesc) {}
> >  #endif /* USE_SPLIT_PTE_PTLOCKS */
> >
> > -static inline bool pgtable_pte_page_ctor(struct page *page)
> > +static inline bool ptdesc_pte_ctor(struct ptdesc *ptdesc)
> >  {
> > -     if (!ptlock_init(page_ptdesc(page)))
> > +     struct folio *folio = ptdesc_folio(ptdesc);
> > +
> > +     if (!ptlock_init(ptdesc))
> >               return false;
> > -     __SetPageTable(page);
> > -     inc_lruvec_page_state(page, NR_PAGETABLE);
> > +     __folio_set_table(folio);
> > +     lruvec_stat_add_folio(folio, NR_PAGETABLE);
> >       return true;
> >  }
> >
> > +static inline bool pgtable_pte_page_ctor(struct page *page)
> > +{
> > +     return ptdesc_pte_ctor(page_ptdesc(page));
> > +}
> > +
> > +static inline void ptdesc_pte_dtor(struct ptdesc *ptdesc)
> > +{
> > +     struct folio *folio = ptdesc_folio(ptdesc);
> > +
> > +     ptlock_free(ptdesc);
> > +     __folio_clear_table(folio);
> > +     lruvec_stat_sub_folio(folio, NR_PAGETABLE);
> > +}
> > +
> >  static inline void pgtable_pte_page_dtor(struct page *page)
> >  {
> > -     ptlock_free(page_ptdesc(page));
> > -     __ClearPageTable(page);
> > -     dec_lruvec_page_state(page, NR_PAGETABLE);
> > +     ptdesc_pte_dtor(page_ptdesc(page));
> >  }
> >
> >  #define pte_offset_map_lock(mm, pmd, address, ptlp)  \
> > @@ -2942,20 +2956,34 @@ static inline spinlock_t *pmd_lock(struct mm_struct *mm, pmd_t *pmd)
> >       return ptl;
> >  }
> >
> > -static inline bool pgtable_pmd_page_ctor(struct page *page)
> > +static inline bool ptdesc_pmd_ctor(struct ptdesc *ptdesc)
> >  {
> > -     if (!pmd_ptlock_init(page_ptdesc(page)))
> > +     struct folio *folio = ptdesc_folio(ptdesc);
> > +
> > +     if (!pmd_ptlock_init(ptdesc))
> >               return false;
> > -     __SetPageTable(page);
> > -     inc_lruvec_page_state(page, NR_PAGETABLE);
> > +     __folio_set_table(folio);
> > +     lruvec_stat_add_folio(folio, NR_PAGETABLE);
> >       return true;
> >  }
> >
> > +static inline bool pgtable_pmd_page_ctor(struct page *page)
> > +{
> > +     return ptdesc_pmd_ctor(page_ptdesc(page));
> > +}
> > +
> > +static inline void ptdesc_pmd_dtor(struct ptdesc *ptdesc)
> > +{
> > +     struct folio *folio = ptdesc_folio(ptdesc);
> > +
> > +     pmd_ptlock_free(ptdesc);
> > +     __folio_clear_table(folio);
> > +     lruvec_stat_sub_folio(folio, NR_PAGETABLE);
> > +}
> > +
> >  static inline void pgtable_pmd_page_dtor(struct page *page)
> >  {
> > -     pmd_ptlock_free(page_ptdesc(page));
> > -     __ClearPageTable(page);
> > -     dec_lruvec_page_state(page, NR_PAGETABLE);
> > +     ptdesc_pmd_dtor(page_ptdesc(page));
> >  }
> >
> >  /*
> > --
> > 2.39.2
> >
> >
>
> --
> Sincerely yours,
> Mike.
diff mbox series

Patch

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 58c911341a33..dc61aeca9077 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2847,20 +2847,34 @@  static inline bool ptlock_init(struct ptdesc *ptdesc) { return true; }
 static inline void ptlock_free(struct ptdesc *ptdesc) {}
 #endif /* USE_SPLIT_PTE_PTLOCKS */
 
-static inline bool pgtable_pte_page_ctor(struct page *page)
+static inline bool ptdesc_pte_ctor(struct ptdesc *ptdesc)
 {
-	if (!ptlock_init(page_ptdesc(page)))
+	struct folio *folio = ptdesc_folio(ptdesc);
+
+	if (!ptlock_init(ptdesc))
 		return false;
-	__SetPageTable(page);
-	inc_lruvec_page_state(page, NR_PAGETABLE);
+	__folio_set_table(folio);
+	lruvec_stat_add_folio(folio, NR_PAGETABLE);
 	return true;
 }
 
+static inline bool pgtable_pte_page_ctor(struct page *page)
+{
+	return ptdesc_pte_ctor(page_ptdesc(page));
+}
+
+static inline void ptdesc_pte_dtor(struct ptdesc *ptdesc)
+{
+	struct folio *folio = ptdesc_folio(ptdesc);
+
+	ptlock_free(ptdesc);
+	__folio_clear_table(folio);
+	lruvec_stat_sub_folio(folio, NR_PAGETABLE);
+}
+
 static inline void pgtable_pte_page_dtor(struct page *page)
 {
-	ptlock_free(page_ptdesc(page));
-	__ClearPageTable(page);
-	dec_lruvec_page_state(page, NR_PAGETABLE);
+	ptdesc_pte_dtor(page_ptdesc(page));
 }
 
 #define pte_offset_map_lock(mm, pmd, address, ptlp)	\
@@ -2942,20 +2956,34 @@  static inline spinlock_t *pmd_lock(struct mm_struct *mm, pmd_t *pmd)
 	return ptl;
 }
 
-static inline bool pgtable_pmd_page_ctor(struct page *page)
+static inline bool ptdesc_pmd_ctor(struct ptdesc *ptdesc)
 {
-	if (!pmd_ptlock_init(page_ptdesc(page)))
+	struct folio *folio = ptdesc_folio(ptdesc);
+
+	if (!pmd_ptlock_init(ptdesc))
 		return false;
-	__SetPageTable(page);
-	inc_lruvec_page_state(page, NR_PAGETABLE);
+	__folio_set_table(folio);
+	lruvec_stat_add_folio(folio, NR_PAGETABLE);
 	return true;
 }
 
+static inline bool pgtable_pmd_page_ctor(struct page *page)
+{
+	return ptdesc_pmd_ctor(page_ptdesc(page));
+}
+
+static inline void ptdesc_pmd_dtor(struct ptdesc *ptdesc)
+{
+	struct folio *folio = ptdesc_folio(ptdesc);
+
+	pmd_ptlock_free(ptdesc);
+	__folio_clear_table(folio);
+	lruvec_stat_sub_folio(folio, NR_PAGETABLE);
+}
+
 static inline void pgtable_pmd_page_dtor(struct page *page)
 {
-	pmd_ptlock_free(page_ptdesc(page));
-	__ClearPageTable(page);
-	dec_lruvec_page_state(page, NR_PAGETABLE);
+	ptdesc_pmd_dtor(page_ptdesc(page));
 }
 
 /*