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authorJohn David Anglin <dave.anglin@bell.net>2018-10-19 20:33:29 -0400
committerHelge Deller <deller@gmx.de>2018-10-20 21:09:30 +0200
commit5a23237f14c5f35afbbf9d4a5bdfb2421a7af665 (patch)
tree56285e2e0ff46a0fca2e7b768d72ee5f710dc5b3 /arch/parisc
parentparisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions (diff)
downloadlinux-dev-5a23237f14c5f35afbbf9d4a5bdfb2421a7af665.tar.xz
linux-dev-5a23237f14c5f35afbbf9d4a5bdfb2421a7af665.zip
parisc: Remove pte_inserted define
The attached change removes the pte_inserted from pgtable.h. As a result, we always flush the TLB entry when the associated page table entry is changed. This change doesn't impact performance signifcantly and it may catch some cases where the TLB needs flushing but wasn't. Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to '')
-rw-r--r--arch/parisc/include/asm/pgtable.h10
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 94c0ef7a9e03..b941ac7d4e70 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -55,10 +55,6 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
*(pteptr) = (pteval); \
} while(0)
-#define pte_inserted(x) \
- ((pte_val(x) & (_PAGE_PRESENT|_PAGE_ACCESSED)) \
- == (_PAGE_PRESENT|_PAGE_ACCESSED))
-
#define set_pte_at(mm, addr, ptep, pteval) \
do { \
pte_t old_pte; \
@@ -66,8 +62,7 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
spin_lock_irqsave(&pa_tlb_lock, flags); \
old_pte = *ptep; \
set_pte(ptep, pteval); \
- if (pte_inserted(old_pte)) \
- purge_tlb_entries(mm, addr); \
+ purge_tlb_entries(mm, addr); \
spin_unlock_irqrestore(&pa_tlb_lock, flags); \
} while (0)
@@ -493,8 +488,7 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
spin_lock_irqsave(&pa_tlb_lock, flags);
old_pte = *ptep;
set_pte(ptep, __pte(0));
- if (pte_inserted(old_pte))
- purge_tlb_entries(mm, addr);
+ purge_tlb_entries(mm, addr);
spin_unlock_irqrestore(&pa_tlb_lock, flags);
return old_pte;