[PATCH v1 4/6] tlb: mmu_gather: add tlb_set_*_range APIs

Zhenyu Ye
2020-04-03T09:01:21Z

From: "Peter Zijlstra (Intel)" <peterz@infradead.org>

tlb_set_{pte|pmd|pud|p4d}_range() adjust the tlb->start and
tlb->end, then set corresponding cleared_*.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
---
include/asm-generic/tlb.h | 55 ++++++++++++++++++++++++++++-----------
1 file changed, 40 insertions(+), 15 deletions(-)

diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index f391f6b500b4..ee91310a65c6 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -511,6 +511,38 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm
}
#endif

+/*
+ * tlb_set_{pte|pmd|pud|p4d}_range() adjust the tlb->start and tlb->end,
+ * and set corresponding cleared_*.
+ */
+static inline void tlb_set_pte_range(struct mmu_gather *tlb,
+ unsigned long address, unsigned long size)
+{
+ __tlb_adjust_range(tlb, address, size);
+ tlb->cleared_ptes = 1;
+}
+
+static inline void tlb_set_pmd_range(struct mmu_gather *tlb,
+ unsigned long address, unsigned long size)
+{
+ __tlb_adjust_range(tlb, address, size);
+ tlb->cleared_pmds = 1;
+}
+
+static inline void tlb_set_pud_range(struct mmu_gather *tlb,
+ unsigned long address, unsigned long size)
+{
+ __tlb_adjust_range(tlb, address, size);
+ tlb->cleared_puds = 1;
+}
+
+static inline void tlb_set_p4d_range(struct mmu_gather *tlb,
+ unsigned long address, unsigned long size)
+{
+ __tlb_adjust_range(tlb, address, size);
+ tlb->cleared_p4ds = 1;
+}
+
#ifndef __tlb_remove_tlb_entry
#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
#endif
@@ -524,19 +556,17 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm
*/
#define tlb_remove_tlb_entry(tlb, ptep, address) \
do { \
- __tlb_adjust_range(tlb, address, PAGE_SIZE); \
- tlb->cleared_ptes = 1; \
+ tlb_set_pte_range(tlb, address, PAGE_SIZE); \
__tlb_remove_tlb_entry(tlb, ptep, address); \
} while (0)

#define tlb_remove_huge_tlb_entry(h, tlb, ptep, address) \
do { \
unsigned long _sz = huge_page_size(h); \
- __tlb_adjust_range(tlb, address, _sz); \
if (_sz == PMD_SIZE) \
- tlb->cleared_pmds = 1; \
+ tlb_set_pmd_range(tlb, address, _sz); \
else if (_sz == PUD_SIZE) \
- tlb->cleared_puds = 1; \
+ tlb_set_pud_range(tlb, address, _sz); \
__tlb_remove_tlb_entry(tlb, ptep, address); \
} while (0)

@@ -550,8 +580,7 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm

#define tlb_remove_pmd_tlb_entry(tlb, pmdp, address) \
do { \
- __tlb_adjust_range(tlb, address, HPAGE_PMD_SIZE); \
- tlb->cleared_pmds = 1; \
+ tlb_set_pmd_range(tlb, address, HPAGE_PMD_SIZE); \
__tlb_remove_pmd_tlb_entry(tlb, pmdp, address); \
} while (0)

@@ -565,8 +594,7 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm

#define tlb_remove_pud_tlb_entry(tlb, pudp, address) \
do { \
- __tlb_adjust_range(tlb, address, HPAGE_PUD_SIZE); \
- tlb->cleared_puds = 1; \
+ tlb_set_pud_range(tlb, address, HPAGE_PUD_SIZE); \
__tlb_remove_pud_tlb_entry(tlb, pudp, address); \
} while (0)

@@ -591,9 +619,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm
#ifndef pte_free_tlb
#define pte_free_tlb(tlb, ptep, address) \
do { \
- __tlb_adjust_range(tlb, address, PAGE_SIZE); \
+ tlb_set_pmd_range(tlb, address, PAGE_SIZE); \
tlb->freed_tables = 1; \
- tlb->cleared_pmds = 1; \
__pte_free_tlb(tlb, ptep, address); \
} while (0)
#endif
@@ -601,9 +628,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm
#ifndef pmd_free_tlb
#define pmd_free_tlb(tlb, pmdp, address) \
do { \
- __tlb_adjust_range(tlb, address, PAGE_SIZE); \
+ tlb_set_pud_range(tlb, address, PAGE_SIZE); \
tlb->freed_tables = 1; \
- tlb->cleared_puds = 1; \
__pmd_free_tlb(tlb, pmdp, address); \
} while (0)
#endif
@@ -611,9 +637,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm
#ifndef pud_free_tlb
#define pud_free_tlb(tlb, pudp, address) \
do { \
- __tlb_adjust_range(tlb, address, PAGE_SIZE); \
+ tlb_set_p4d_range(tlb, address, PAGE_SIZE); \
tlb->freed_tables = 1; \
- tlb->cleared_p4ds = 1; \
__pud_free_tlb(tlb, pudp, address); \
} while (0)
#endif
--
2.19.1