Commit 4a9d1946 authored by David S. Miller's avatar David S. Miller

sparc64: Define pte_accessible()

We can elide flush_tlb_*() calls when _PAGE_VALID is clear
as that is the test used to determine whether or not to
queue up a TLB flush in set_pte_at().
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6cb9c369
...@@ -617,6 +617,12 @@ static inline unsigned long pte_present(pte_t pte) ...@@ -617,6 +617,12 @@ static inline unsigned long pte_present(pte_t pte)
return val; return val;
} }
#define pte_accessible pte_accessible
static inline unsigned long pte_accessible(pte_t a)
{
return pte_val(a) & _PAGE_VALID;
}
static inline unsigned long pte_special(pte_t pte) static inline unsigned long pte_special(pte_t pte)
{ {
return pte_val(pte) & _PAGE_SPECIAL; return pte_val(pte) & _PAGE_SPECIAL;
...@@ -802,7 +808,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, ...@@ -802,7 +808,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
* SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U * SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U
* and SUN4V pte layout, so this inline test is fine. * and SUN4V pte layout, so this inline test is fine.
*/ */
if (likely(mm != &init_mm) && (pte_val(orig) & _PAGE_VALID)) if (likely(mm != &init_mm) && pte_accessible(orig))
tlb_batch_add(mm, addr, ptep, orig, fullmm); tlb_batch_add(mm, addr, ptep, orig, fullmm);
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment