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ARCv2: mm: THP: flush_pmd_tlb_range make SMP safe

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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2015-10-15 08:04:45 +05:30
parent 722fe8fd36
commit c7119d56d2
2 changed files with 30 additions and 2 deletions
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5
arch/arc/include/asm/tlbflush.h
View file

@ -17,6 +17,8 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
void local_flush_tlb_kernel_range(unsigned long start, unsigned long end);
void local_flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
void local_flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end);
#ifndef CONFIG_SMP
#define flush_tlb_range(vma, s, e) local_flush_tlb_range(vma, s, e)
@ -24,6 +26,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma,
#define flush_tlb_kernel_range(s, e) local_flush_tlb_kernel_range(s, e)
#define flush_tlb_all() local_flush_tlb_all()
#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
#define flush_pmd_tlb_range(vma, s, e) local_flush_pmd_tlb_range(vma, s, e)
#else
extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end);
@ -31,5 +34,7 @@ extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
extern void flush_tlb_all(void);
extern void flush_tlb_mm(struct mm_struct *mm);
extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
#endif /* CONFIG_SMP */
#endif

27
arch/arc/mm/tlb.c
View file

@ -421,6 +421,15 @@ static inline void ipi_flush_tlb_range(void *arg)
local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline void ipi_flush_pmd_tlb_range(void *arg)
{
struct tlb_args *ta = arg;
local_flush_pmd_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
}
#endif
static inline void ipi_flush_tlb_kernel_range(void *arg)
{
struct tlb_args *ta = (struct tlb_args *)arg;
@ -461,6 +470,20 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range, &ta, 1);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct tlb_args ta = {
.ta_vma = vma,
.ta_start = start,
.ta_end = end
};
on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_pmd_tlb_range, &ta, 1);
}
#endif
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
struct tlb_args ta = {
@ -659,8 +682,8 @@ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
return pgtable;
}
void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
void local_flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
unsigned int cpu;
unsigned long flags;