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| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-10-02 11:15:13 -0700 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2015-10-02 11:22:23 -0700 |
| commit | 9f30a04d768f64280dc0c40b730746e82f298d88 (patch) | |
| tree | e112853eb73627ed7b9a2ef8e4feab6685a0200e /include/linux/mmu_notifier.h | |
| parent | 9e294bf88a583825a413df408b9fe9e658fb93ac (diff) | |
| parent | 7aba4f5201d1b7b3ddb0b03883d9edf69851ddad (diff) | |
| download | linux-9f30a04d768f64280dc0c40b730746e82f298d88.tar.gz linux-9f30a04d768f64280dc0c40b730746e82f298d88.tar.xz | |
Merge branch 'for-4.3-rc/ti-clk-fixes' of https://github.com/t-kristo/linux-pm into clk-fixes
Pull fixes from Tero Kristo:
"A few TI clock driver fixes to pull against 4.3-rc"
* 'for-4.3-rc/ti-clk-fixes' of https://github.com/t-kristo/linux-pm: (3 commits)
clk: ti: dflt: fix enable_reg validity check
clk: ti: fix dual-registration of uart4_ick
clk: ti: clk-7xx: Remove hardwired ABE clock configuration
Diffstat (limited to 'include/linux/mmu_notifier.h')
| -rw-r--r-- | include/linux/mmu_notifier.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index 61cd67f4d788..a1a210d59961 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -66,6 +66,16 @@ struct mmu_notifier_ops { unsigned long end); /* + * clear_young is a lightweight version of clear_flush_young. Like the + * latter, it is supposed to test-and-clear the young/accessed bitflag + * in the secondary pte, but it may omit flushing the secondary tlb. + */ + int (*clear_young)(struct mmu_notifier *mn, + struct mm_struct *mm, + unsigned long start, + unsigned long end); + + /* * test_young is called to check the young/accessed bitflag in * the secondary pte. This is used to know if the page is * frequently used without actually clearing the flag or tearing @@ -203,6 +213,9 @@ extern void __mmu_notifier_release(struct mm_struct *mm); extern int __mmu_notifier_clear_flush_young(struct mm_struct *mm, unsigned long start, unsigned long end); +extern int __mmu_notifier_clear_young(struct mm_struct *mm, + unsigned long start, + unsigned long end); extern int __mmu_notifier_test_young(struct mm_struct *mm, unsigned long address); extern void __mmu_notifier_change_pte(struct mm_struct *mm, @@ -231,6 +244,15 @@ static inline int mmu_notifier_clear_flush_young(struct mm_struct *mm, return 0; } +static inline int mmu_notifier_clear_young(struct mm_struct *mm, + unsigned long start, + unsigned long end) +{ + if (mm_has_notifiers(mm)) + return __mmu_notifier_clear_young(mm, start, end); + return 0; +} + static inline int mmu_notifier_test_young(struct mm_struct *mm, unsigned long address) { @@ -311,6 +333,28 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) __young; \ }) +#define ptep_clear_young_notify(__vma, __address, __ptep) \ +({ \ + int __young; \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ + __young = ptep_test_and_clear_young(___vma, ___address, __ptep);\ + __young |= mmu_notifier_clear_young(___vma->vm_mm, ___address, \ + ___address + PAGE_SIZE); \ + __young; \ +}) + +#define pmdp_clear_young_notify(__vma, __address, __pmdp) \ +({ \ + int __young; \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ + __young = pmdp_test_and_clear_young(___vma, ___address, __pmdp);\ + __young |= mmu_notifier_clear_young(___vma->vm_mm, ___address, \ + ___address + PMD_SIZE); \ + __young; \ +}) + #define ptep_clear_flush_notify(__vma, __address, __ptep) \ ({ \ unsigned long ___addr = __address & PAGE_MASK; \ @@ -427,6 +471,8 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) #define ptep_clear_flush_young_notify ptep_clear_flush_young #define pmdp_clear_flush_young_notify pmdp_clear_flush_young +#define ptep_clear_young_notify ptep_test_and_clear_young +#define pmdp_clear_young_notify pmdp_test_and_clear_young #define ptep_clear_flush_notify ptep_clear_flush #define pmdp_huge_clear_flush_notify pmdp_huge_clear_flush #define pmdp_huge_get_and_clear_notify pmdp_huge_get_and_clear |