diff mbox

[v9,04/12] sparc64: simplify vmemmap_populate

Message ID 20170920201714.19817-5-pasha.tatashin@oracle.com (mailing list archive)
State New, archived
Headers show

Commit Message

Pavel Tatashin Sept. 20, 2017, 8:17 p.m. UTC 
Remove duplicating code by using common functions
vmemmap_pud_populate and vmemmap_pgd_populate.

Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Acked-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/mm/init_64.c | 23 ++++++-----------------
 1 file changed, 6 insertions(+), 17 deletions(-)

Comments

Michal Hocko Oct. 3, 2017, 12:59 p.m. UTC | #1 
On Wed 20-09-17 16:17:06, Pavel Tatashin wrote:
> Remove duplicating code by using common functions
> vmemmap_pud_populate and vmemmap_pgd_populate.
> 
> Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
> Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
> Reviewed-by: Bob Picco <bob.picco@oracle.com>
> Acked-by: David S. Miller <davem@davemloft.net>

Acked-by: Michal Hocko <mhocko@suse.com>

> ---
>  arch/sparc/mm/init_64.c | 23 ++++++-----------------
>  1 file changed, 6 insertions(+), 17 deletions(-)
> 
> diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
> index 310c6754bcaa..99aea4d15a5f 100644
> --- a/arch/sparc/mm/init_64.c
> +++ b/arch/sparc/mm/init_64.c
> @@ -2651,30 +2651,19 @@ int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,
>  	vstart = vstart & PMD_MASK;
>  	vend = ALIGN(vend, PMD_SIZE);
>  	for (; vstart < vend; vstart += PMD_SIZE) {
> -		pgd_t *pgd = pgd_offset_k(vstart);
> +		pgd_t *pgd = vmemmap_pgd_populate(vstart, node);
>  		unsigned long pte;
>  		pud_t *pud;
>  		pmd_t *pmd;
>  
> -		if (pgd_none(*pgd)) {
> -			pud_t *new = vmemmap_alloc_block(PAGE_SIZE, node);
> +		if (!pgd)
> +			return -ENOMEM;
>  
> -			if (!new)
> -				return -ENOMEM;
> -			pgd_populate(&init_mm, pgd, new);
> -		}
> -
> -		pud = pud_offset(pgd, vstart);
> -		if (pud_none(*pud)) {
> -			pmd_t *new = vmemmap_alloc_block(PAGE_SIZE, node);
> -
> -			if (!new)
> -				return -ENOMEM;
> -			pud_populate(&init_mm, pud, new);
> -		}
> +		pud = vmemmap_pud_populate(pgd, vstart, node);
> +		if (!pud)
> +			return -ENOMEM;
>  
>  		pmd = pmd_offset(pud, vstart);
> -
>  		pte = pmd_val(*pmd);
>  		if (!(pte & _PAGE_VALID)) {
>  			void *block = vmemmap_alloc_block(PMD_SIZE, node);
> -- 
> 2.14.1
Pavel Tatashin Oct. 3, 2017, 3:20 p.m. UTC | #2 
> 
> Acked-by: Michal Hocko <mhocko@suse.com>

Thank you,
Pasha
diff mbox

Patch

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 310c6754bcaa..99aea4d15a5f 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2651,30 +2651,19 @@  int __meminit vmemmap_populate(unsigned long vstart, unsigned long vend,
 	vstart = vstart & PMD_MASK;
 	vend = ALIGN(vend, PMD_SIZE);
 	for (; vstart < vend; vstart += PMD_SIZE) {
-		pgd_t *pgd = pgd_offset_k(vstart);
+		pgd_t *pgd = vmemmap_pgd_populate(vstart, node);
 		unsigned long pte;
 		pud_t *pud;
 		pmd_t *pmd;
 
-		if (pgd_none(*pgd)) {
-			pud_t *new = vmemmap_alloc_block(PAGE_SIZE, node);
+		if (!pgd)
+			return -ENOMEM;
 
-			if (!new)
-				return -ENOMEM;
-			pgd_populate(&init_mm, pgd, new);
-		}
-
-		pud = pud_offset(pgd, vstart);
-		if (pud_none(*pud)) {
-			pmd_t *new = vmemmap_alloc_block(PAGE_SIZE, node);
-
-			if (!new)
-				return -ENOMEM;
-			pud_populate(&init_mm, pud, new);
-		}
+		pud = vmemmap_pud_populate(pgd, vstart, node);
+		if (!pud)
+			return -ENOMEM;
 
 		pmd = pmd_offset(pud, vstart);
-
 		pte = pmd_val(*pmd);
 		if (!(pte & _PAGE_VALID)) {
 			void *block = vmemmap_alloc_block(PMD_SIZE, node);