mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

powerpc/mm/radix/hugetlb: Add helper for finding page size from hstate 

Use the helper instead of open coding the same at multiple place

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-07-13 15:06:42 +05:30 committed by Michael Ellerman
parent f22dfc9158
commit fbfa26d854
4 changed files with 30 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
arch/powerpc/include/asm/book3s/64/hugetlb-radix.h
View File

@ -11,4 +11,19 @@ extern unsigned long
radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
unsigned long len, unsigned long pgoff,
unsigned long flags);
static inline int hstate_get_psize(struct hstate *hstate)
{
unsigned long shift;
shift = huge_page_shift(hstate);
if (shift == mmu_psize_defs[MMU_PAGE_2M].shift)
return MMU_PAGE_2M;
else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift)
return MMU_PAGE_1G;
else {
WARN(1, "Wrong huge page shift\n");
return mmu_virtual_psize;
}
}
#endif

4
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
View File

@ -22,14 +22,14 @@ extern void radix__local_flush_tlb_mm(struct mm_struct *mm);
extern void radix__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
extern void radix__local_flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr);
extern void radix__local_flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap);
int psize);
extern void radix__tlb_flush(struct mmu_gather *tlb);
#ifdef CONFIG_SMP
extern void radix__flush_tlb_mm(struct mm_struct *mm);
extern void radix__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
extern void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr);
extern void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap);
int psize);
#else
#define radix__flush_tlb_mm(mm) radix__local_flush_tlb_mm(mm)
#define radix__flush_tlb_page(vma,addr) radix__local_flush_tlb_page(vma,addr)

29
arch/powerpc/mm/hugetlbpage-radix.c
View File

@ -5,39 +5,24 @@
#include <asm/cacheflush.h>
#include <asm/machdep.h>
#include <asm/mman.h>
#include <asm/tlb.h>
void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
{
unsigned long ap, shift;
int psize;
struct hstate *hstate = hstate_file(vma->vm_file);
shift = huge_page_shift(hstate);
if (shift == mmu_psize_defs[MMU_PAGE_2M].shift)
ap = mmu_get_ap(MMU_PAGE_2M);
else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift)
ap = mmu_get_ap(MMU_PAGE_1G);
else {
WARN(1, "Wrong huge page shift\n");
return ;
}
radix__flush_tlb_page_psize(vma->vm_mm, vmaddr, ap);
psize = hstate_get_psize(hstate);
radix__flush_tlb_page_psize(vma->vm_mm, vmaddr, psize);
}
void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
{
unsigned long ap, shift;
int psize;
struct hstate *hstate = hstate_file(vma->vm_file);
shift = huge_page_shift(hstate);
if (shift == mmu_psize_defs[MMU_PAGE_2M].shift)
ap = mmu_get_ap(MMU_PAGE_2M);
else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift)
ap = mmu_get_ap(MMU_PAGE_1G);
else {
WARN(1, "Wrong huge page shift\n");
return ;
}
radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, ap);
psize = hstate_get_psize(hstate);
radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, psize);
}
/*

10
arch/powerpc/mm/tlb-radix.c
View File

@ -141,9 +141,10 @@ void radix__local_flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr)
EXPORT_SYMBOL(radix__local_flush_tlb_pwc);
void radix__local_flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap)
int psize)
{
unsigned long pid;
unsigned long ap = mmu_get_ap(psize);
preempt_disable();
pid = mm ? mm->context.id : 0;
@ -160,7 +161,7 @@ void radix__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmadd
return __local_flush_hugetlb_page(vma, vmaddr);
#endif
radix__local_flush_tlb_page_psize(vma ? vma->vm_mm : NULL, vmaddr,
mmu_get_ap(mmu_virtual_psize));
mmu_virtual_psize);
}
EXPORT_SYMBOL(radix__local_flush_tlb_page);
@ -216,9 +217,10 @@ no_context:
EXPORT_SYMBOL(radix__flush_tlb_pwc);
void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap)
int psize)
{
unsigned long pid;
unsigned long ap = mmu_get_ap(psize);
preempt_disable();
pid = mm ? mm->context.id : 0;
@ -245,7 +247,7 @@ void radix__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
return flush_hugetlb_page(vma, vmaddr);
#endif
radix__flush_tlb_page_psize(vma ? vma->vm_mm : NULL, vmaddr,
mmu_get_ap(mmu_virtual_psize));
mmu_virtual_psize);
}
EXPORT_SYMBOL(radix__flush_tlb_page);