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ARC: mm: switch pgtable_to to pte_t *

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ARC is the only arch with unsigned long type (vs. struct page *).
Historically this was done to avoid the page_address() calls in various
arch hooks which need to get the virtual/logical address of the table.

Some arches alternately define it as pte_t *, and is as efficient as
unsigned long (generated code doesn't change)

Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta
2015-08-28 08:39:57 +05:30
parent 049e6dde7e
commit e8a75963a4
2 changed files with 5 additions and 5 deletions
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4
arch/arc/include/asm/page.h
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@@ -43,7 +43,6 @@ typedef struct {
typedef struct {
unsigned long pgprot;
} pgprot_t;
typedef unsigned long pgtable_t;
#define pte_val(x) ((x).pte)
#define pgd_val(x) ((x).pgd)
@@ -60,7 +59,6 @@ typedef unsigned long pgtable_t;
typedef unsigned long pte_t;
typedef unsigned long pgd_t;
typedef unsigned long pgprot_t;
typedef unsigned long pgtable_t;
#define pte_val(x) (x)
#define pgd_val(x) (x)
@@ -71,6 +69,8 @@ typedef unsigned long pgtable_t;
#endif
typedef pte_t * pgtable_t;
#define ARCH_PFN_OFFSET (CONFIG_LINUX_LINK_BASE >> PAGE_SHIFT)
#define pfn_valid(pfn) (((pfn) - ARCH_PFN_OFFSET) < max_mapnr)