redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

arm64: Clean up __flush_tlb(_kernel)_range functions 

This patch moves the MAX_TLB_RANGE check into the
flush_tlb(_kernel)_range functions directly to avoid the
undescore-prefixed definitions (and for consistency with a subsequent
patch).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
hifive-unleashed-5.1
Catalin Marinas 2015-07-24 09:59:55 +01:00 committed by Will Deacon
parent c53e0baa6f
commit da4e73303e
1 changed files with 28 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
arch/arm64/include/asm/tlbflush.h
View File

@ -91,33 +91,6 @@ static inline void flush_tlb_page(struct vm_area_struct *vma,
dsb(ish);
}
static inline void __flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
unsigned long asid = (unsigned long)ASID(vma->vm_mm) << 48;
unsigned long addr;
start = asid | (start >> 12);
end = asid | (end >> 12);
dsb(ishst);
for (addr = start; addr < end; addr += 1 << (PAGE_SHIFT - 12))
asm("tlbi vae1is, %0" : : "r"(addr));
dsb(ish);
}
static inline void __flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
unsigned long addr;
start >>= 12;
end >>= 12;
dsb(ishst);
for (addr = start; addr < end; addr += 1 << (PAGE_SHIFT - 12))
asm("tlbi vaae1is, %0" : : "r"(addr));
dsb(ish);
isb();
}
/*
* This is meant to avoid soft lock-ups on large TLB flushing ranges and not
* necessarily a performance improvement.
@ -127,18 +100,40 @@ static inline void __flush_tlb_kernel_range(unsigned long start, unsigned long e
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
if ((end - start) <= MAX_TLB_RANGE)
__flush_tlb_range(vma, start, end);
else
unsigned long asid = (unsigned long)ASID(vma->vm_mm) << 48;
unsigned long addr;
if ((end - start) > MAX_TLB_RANGE) {
flush_tlb_mm(vma->vm_mm);
return;
}
start = asid | (start >> 12);
end = asid | (end >> 12);
dsb(ishst);
for (addr = start; addr < end; addr += 1 << (PAGE_SHIFT - 12))
asm("tlbi vae1is, %0" : : "r"(addr));
dsb(ish);
}
static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
if ((end - start) <= MAX_TLB_RANGE)
__flush_tlb_kernel_range(start, end);
else
unsigned long addr;
if ((end - start) > MAX_TLB_RANGE) {
flush_tlb_all();
return;
}
start >>= 12;
end >>= 12;
dsb(ishst);
for (addr = start; addr < end; addr += 1 << (PAGE_SHIFT - 12))
asm("tlbi vaae1is, %0" : : "r"(addr));
dsb(ish);
isb();
}
/*