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powerpc/mm: Remove empty hash__ functions

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The empty hash__* functions are unnecessary. The empty definitions were
introduced when 64-bit Hash support was added, as the functions were
still used in generic code. These empty definitions were prefixed with
hash__ when Radix support was added, and new wrappers with the original
names were added that selected the Radix or Hash version based on
radix_enabled().

But the hash__ prefixed functions were not part of a public interface,
so there is no need to include them for compatibility with anything.
Generic code will use the non-prefixed wrappers, and Hash specific code
will know that there is no point in calling them (or even worse, call
them and expect them to do something).

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221109045112.187069-5-bgray@linux.ibm.com
This commit is contained in:
Benjamin Gray 2022-11-09 15:51:07 +11:00 committed by Michael Ellerman
parent 071c95c1ac
commit baf1ed24b2
2 changed files with 9 additions and 46 deletions
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28
arch/powerpc/include/asm/book3s/64/tlbflush-hash.h
View File

@ -65,13 +65,6 @@ extern void flush_hash_range(unsigned long number, int local);
extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr, extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr,
pmd_t *pmdp, unsigned int psize, int ssize, pmd_t *pmdp, unsigned int psize, int ssize,
unsigned long flags); unsigned long flags);
static inline void hash__local_flush_tlb_mm(struct mm_struct *mm)
{
}
static inline void hash__flush_tlb_mm(struct mm_struct *mm)
{
}
static inline void hash__local_flush_all_mm(struct mm_struct *mm) static inline void hash__local_flush_all_mm(struct mm_struct *mm)
{ {
@ -95,27 +88,6 @@ static inline void hash__flush_all_mm(struct mm_struct *mm)
WARN_ON_ONCE(1); WARN_ON_ONCE(1);
} }
static inline void hash__local_flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr)
{
}
static inline void hash__flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr)
{
}
static inline void hash__flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
}
static inline void hash__flush_tlb_kernel_range(unsigned long start,
unsigned long end)
{
}
struct mmu_gather; struct mmu_gather;
extern void hash__tlb_flush(struct mmu_gather *tlb); extern void hash__tlb_flush(struct mmu_gather *tlb);

27
arch/powerpc/include/asm/book3s/64/tlbflush.h
View File

@ -47,8 +47,7 @@ static inline void flush_pmd_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end) unsigned long start, unsigned long end)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_pmd_tlb_range(vma, start, end); radix__flush_pmd_tlb_range(vma, start, end);
return hash__flush_tlb_range(vma, start, end);
} }
#define __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE #define __HAVE_ARCH_FLUSH_HUGETLB_TLB_RANGE
@ -57,39 +56,34 @@ static inline void flush_hugetlb_tlb_range(struct vm_area_struct *vma,
unsigned long end) unsigned long end)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_hugetlb_tlb_range(vma, start, end); radix__flush_hugetlb_tlb_range(vma, start, end);
return hash__flush_tlb_range(vma, start, end);
} }
static inline void flush_tlb_range(struct vm_area_struct *vma, static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end) unsigned long start, unsigned long end)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_tlb_range(vma, start, end); radix__flush_tlb_range(vma, start, end);
return hash__flush_tlb_range(vma, start, end);
} }
static inline void flush_tlb_kernel_range(unsigned long start, static inline void flush_tlb_kernel_range(unsigned long start,
unsigned long end) unsigned long end)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_tlb_kernel_range(start, end); radix__flush_tlb_kernel_range(start, end);
return hash__flush_tlb_kernel_range(start, end);
} }
static inline void local_flush_tlb_mm(struct mm_struct *mm) static inline void local_flush_tlb_mm(struct mm_struct *mm)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__local_flush_tlb_mm(mm); radix__local_flush_tlb_mm(mm);
return hash__local_flush_tlb_mm(mm);
} }
static inline void local_flush_tlb_page(struct vm_area_struct *vma, static inline void local_flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr) unsigned long vmaddr)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__local_flush_tlb_page(vma, vmaddr); radix__local_flush_tlb_page(vma, vmaddr);
return hash__local_flush_tlb_page(vma, vmaddr);
} }
static inline void local_flush_all_mm(struct mm_struct *mm) static inline void local_flush_all_mm(struct mm_struct *mm)
@ -102,24 +96,21 @@ static inline void local_flush_all_mm(struct mm_struct *mm)
static inline void tlb_flush(struct mmu_gather *tlb) static inline void tlb_flush(struct mmu_gather *tlb)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__tlb_flush(tlb); radix__tlb_flush(tlb);
return hash__tlb_flush(tlb);
} }
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
static inline void flush_tlb_mm(struct mm_struct *mm) static inline void flush_tlb_mm(struct mm_struct *mm)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_tlb_mm(mm); radix__flush_tlb_mm(mm);
return hash__flush_tlb_mm(mm);
} }
static inline void flush_tlb_page(struct vm_area_struct *vma, static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr) unsigned long vmaddr)
{ {
if (radix_enabled()) if (radix_enabled())
return radix__flush_tlb_page(vma, vmaddr); radix__flush_tlb_page(vma, vmaddr);
return hash__flush_tlb_page(vma, vmaddr);
} }
static inline void flush_all_mm(struct mm_struct *mm) static inline void flush_all_mm(struct mm_struct *mm)