diff mbox series

[6/9] arch, mm: remove stale mentions of DISCONIGMEM

Message ID 20210602105348.13387-7-rppt@kernel.org (mailing list archive)
State New
Headers show
Series Remove DISCINTIGMEM memory model | expand

Commit Message

Mike Rapoport June 2, 2021, 10:53 a.m. UTC
From: Mike Rapoport <rppt@linux.ibm.com>

There are several places that mention DISCONIGMEM in comments or have stale
code guarded by CONFIG_DISCONTIGMEM.

Remove the dead code and update the comments.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
 arch/ia64/kernel/topology.c     | 5 ++---
 arch/ia64/mm/numa.c             | 5 ++---
 arch/mips/include/asm/mmzone.h  | 6 ------
 arch/mips/mm/init.c             | 3 ---
 arch/nds32/include/asm/memory.h | 6 ------
 arch/xtensa/include/asm/page.h  | 4 ----
 include/linux/gfp.h             | 4 ++--
 7 files changed, 6 insertions(+), 27 deletions(-)

Comments

David Hildenbrand June 9, 2021, 10:55 a.m. UTC | #1
On 02.06.21 12:53, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
> 
> There are several places that mention DISCONIGMEM in comments or have stale
> code guarded by CONFIG_DISCONTIGMEM.
> 
> Remove the dead code and update the comments.
> 
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
>   arch/ia64/kernel/topology.c     | 5 ++---
>   arch/ia64/mm/numa.c             | 5 ++---
>   arch/mips/include/asm/mmzone.h  | 6 ------
>   arch/mips/mm/init.c             | 3 ---
>   arch/nds32/include/asm/memory.h | 6 ------
>   arch/xtensa/include/asm/page.h  | 4 ----
>   include/linux/gfp.h             | 4 ++--
>   7 files changed, 6 insertions(+), 27 deletions(-)
> 
> diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
> index 09fc385c2acd..3639e0a7cb3b 100644
> --- a/arch/ia64/kernel/topology.c
> +++ b/arch/ia64/kernel/topology.c
> @@ -3,9 +3,8 @@
>    * License.  See the file "COPYING" in the main directory of this archive
>    * for more details.
>    *
> - * This file contains NUMA specific variables and functions which can
> - * be split away from DISCONTIGMEM and are used on NUMA machines with
> - * contiguous memory.
> + * This file contains NUMA specific variables and functions which are used on
> + * NUMA machines with contiguous memory.
>    * 		2002/08/07 Erich Focht <efocht@ess.nec.de>
>    * Populate cpu entries in sysfs for non-numa systems as well
>    *  	Intel Corporation - Ashok Raj
> diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
> index 46b6e5f3a40f..d6579ec3ea32 100644
> --- a/arch/ia64/mm/numa.c
> +++ b/arch/ia64/mm/numa.c
> @@ -3,9 +3,8 @@
>    * License.  See the file "COPYING" in the main directory of this archive
>    * for more details.
>    *
> - * This file contains NUMA specific variables and functions which can
> - * be split away from DISCONTIGMEM and are used on NUMA machines with
> - * contiguous memory.
> + * This file contains NUMA specific variables and functions which are used on
> + * NUMA machines with contiguous memory.
>    *
>    *                         2002/08/07 Erich Focht <efocht@ess.nec.de>
>    */
> diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h
> index b826b8473e95..7649ab45e80c 100644
> --- a/arch/mips/include/asm/mmzone.h
> +++ b/arch/mips/include/asm/mmzone.h
> @@ -20,10 +20,4 @@
>   #define nid_to_addrbase(nid) 0
>   #endif
>   
> -#ifdef CONFIG_DISCONTIGMEM
> -
> -#define pfn_to_nid(pfn)		pa_to_nid((pfn) << PAGE_SHIFT)
> -
> -#endif /* CONFIG_DISCONTIGMEM */
> -
>   #endif /* _ASM_MMZONE_H_ */
> diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
> index c36358758969..97f6ca341448 100644
> --- a/arch/mips/mm/init.c
> +++ b/arch/mips/mm/init.c
> @@ -454,9 +454,6 @@ void __init mem_init(void)
>   	BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
>   
>   #ifdef CONFIG_HIGHMEM
> -#ifdef CONFIG_DISCONTIGMEM
> -#error "CONFIG_HIGHMEM and CONFIG_DISCONTIGMEM dont work together yet"
> -#endif
>   	max_mapnr = highend_pfn ? highend_pfn : max_low_pfn;
>   #else
>   	max_mapnr = max_low_pfn;
> diff --git a/arch/nds32/include/asm/memory.h b/arch/nds32/include/asm/memory.h
> index 940d32842793..62faafbc28e4 100644
> --- a/arch/nds32/include/asm/memory.h
> +++ b/arch/nds32/include/asm/memory.h
> @@ -76,18 +76,12 @@
>    *  virt_to_page(k)	convert a _valid_ virtual address to struct page *
>    *  virt_addr_valid(k)	indicates whether a virtual address is valid
>    */
> -#ifndef CONFIG_DISCONTIGMEM
> -
>   #define ARCH_PFN_OFFSET		PHYS_PFN_OFFSET
>   #define pfn_valid(pfn)		((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
>   
>   #define virt_to_page(kaddr)	(pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
>   #define virt_addr_valid(kaddr)	((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
>   
> -#else /* CONFIG_DISCONTIGMEM */
> -#error CONFIG_DISCONTIGMEM is not supported yet.
> -#endif /* !CONFIG_DISCONTIGMEM */
> -
>   #define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
>   
>   #endif
> diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
> index 37ce25ef92d6..493eb7083b1a 100644
> --- a/arch/xtensa/include/asm/page.h
> +++ b/arch/xtensa/include/asm/page.h
> @@ -192,10 +192,6 @@ static inline unsigned long ___pa(unsigned long va)
>   #define pfn_valid(pfn) \
>   	((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
>   
> -#ifdef CONFIG_DISCONTIGMEM
> -# error CONFIG_DISCONTIGMEM not supported
> -#endif
> -
>   #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
>   #define page_to_virt(page)	__va(page_to_pfn(page) << PAGE_SHIFT)
>   #define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index 11da8af06704..dbe1f5fc901d 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -494,8 +494,8 @@ static inline int gfp_zonelist(gfp_t flags)
>    * There are two zonelists per node, one for all zones with memory and
>    * one containing just zones from the node the zonelist belongs to.
>    *
> - * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets
> - * optimized to &contig_page_data at compile-time.
> + * For the case of non-NUMA systems the NODE_DATA() gets optimized to
> + * &contig_page_data at compile-time.
>    */
>   static inline struct zonelist *node_zonelist(int nid, gfp_t flags)
>   {
> 

Reviewed-by: David Hildenbrand <david@redhat.com>
diff mbox series

Patch

diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index 09fc385c2acd..3639e0a7cb3b 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -3,9 +3,8 @@ 
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * This file contains NUMA specific variables and functions which can
- * be split away from DISCONTIGMEM and are used on NUMA machines with
- * contiguous memory.
+ * This file contains NUMA specific variables and functions which are used on
+ * NUMA machines with contiguous memory.
  * 		2002/08/07 Erich Focht <efocht@ess.nec.de>
  * Populate cpu entries in sysfs for non-numa systems as well
  *  	Intel Corporation - Ashok Raj
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index 46b6e5f3a40f..d6579ec3ea32 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -3,9 +3,8 @@ 
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * This file contains NUMA specific variables and functions which can
- * be split away from DISCONTIGMEM and are used on NUMA machines with
- * contiguous memory.
+ * This file contains NUMA specific variables and functions which are used on
+ * NUMA machines with contiguous memory.
  * 
  *                         2002/08/07 Erich Focht <efocht@ess.nec.de>
  */
diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h
index b826b8473e95..7649ab45e80c 100644
--- a/arch/mips/include/asm/mmzone.h
+++ b/arch/mips/include/asm/mmzone.h
@@ -20,10 +20,4 @@ 
 #define nid_to_addrbase(nid) 0
 #endif
 
-#ifdef CONFIG_DISCONTIGMEM
-
-#define pfn_to_nid(pfn)		pa_to_nid((pfn) << PAGE_SHIFT)
-
-#endif /* CONFIG_DISCONTIGMEM */
-
 #endif /* _ASM_MMZONE_H_ */
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index c36358758969..97f6ca341448 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -454,9 +454,6 @@  void __init mem_init(void)
 	BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
 
 #ifdef CONFIG_HIGHMEM
-#ifdef CONFIG_DISCONTIGMEM
-#error "CONFIG_HIGHMEM and CONFIG_DISCONTIGMEM dont work together yet"
-#endif
 	max_mapnr = highend_pfn ? highend_pfn : max_low_pfn;
 #else
 	max_mapnr = max_low_pfn;
diff --git a/arch/nds32/include/asm/memory.h b/arch/nds32/include/asm/memory.h
index 940d32842793..62faafbc28e4 100644
--- a/arch/nds32/include/asm/memory.h
+++ b/arch/nds32/include/asm/memory.h
@@ -76,18 +76,12 @@ 
  *  virt_to_page(k)	convert a _valid_ virtual address to struct page *
  *  virt_addr_valid(k)	indicates whether a virtual address is valid
  */
-#ifndef CONFIG_DISCONTIGMEM
-
 #define ARCH_PFN_OFFSET		PHYS_PFN_OFFSET
 #define pfn_valid(pfn)		((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
 
 #define virt_to_page(kaddr)	(pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
 #define virt_addr_valid(kaddr)	((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
 
-#else /* CONFIG_DISCONTIGMEM */
-#error CONFIG_DISCONTIGMEM is not supported yet.
-#endif /* !CONFIG_DISCONTIGMEM */
-
 #define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
 
 #endif
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index 37ce25ef92d6..493eb7083b1a 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -192,10 +192,6 @@  static inline unsigned long ___pa(unsigned long va)
 #define pfn_valid(pfn) \
 	((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
 
-#ifdef CONFIG_DISCONTIGMEM
-# error CONFIG_DISCONTIGMEM not supported
-#endif
-
 #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define page_to_virt(page)	__va(page_to_pfn(page) << PAGE_SHIFT)
 #define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 11da8af06704..dbe1f5fc901d 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -494,8 +494,8 @@  static inline int gfp_zonelist(gfp_t flags)
  * There are two zonelists per node, one for all zones with memory and
  * one containing just zones from the node the zonelist belongs to.
  *
- * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets
- * optimized to &contig_page_data at compile-time.
+ * For the case of non-NUMA systems the NODE_DATA() gets optimized to
+ * &contig_page_data at compile-time.
  */
 static inline struct zonelist *node_zonelist(int nid, gfp_t flags)
 {