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sh: Local TLB flushing variants for SMP prep.

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Rename the existing flush routines to local_ variants for use by
the IPI-backed global flush routines on SMP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2006-12-25 19:28:54 +09:00
parent 11c1965687
commit ea9af69481
8 changed files with 52 additions and 36 deletions
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1
arch/sh/kernel/sh_ksyms.c
View file

@ -105,7 +105,6 @@ EXPORT_SYMBOL(__flush_purge_region);
EXPORT_SYMBOL(clear_user_page);
#endif
EXPORT_SYMBOL(flush_tlb_page);
EXPORT_SYMBOL(__down_trylock);
#ifdef CONFIG_SMP

2
arch/sh/mm/init.c
View file

@ -106,7 +106,7 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
__flush_tlb_page(get_asid(), addr);
flush_tlb_one(get_asid(), addr);
}
/*

4
arch/sh/mm/pg-sh4.c
View file

@ -39,7 +39,7 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
mutex_lock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
set_pte(pte, entry);
local_irq_save(flags);
__flush_tlb_page(get_asid(), p3_addr);
flush_tlb_one(get_asid(), p3_addr);
local_irq_restore(flags);
update_mmu_cache(NULL, p3_addr, entry);
__clear_user_page((void *)p3_addr, to);
@ -74,7 +74,7 @@ void copy_user_page(void *to, void *from, unsigned long address,
mutex_lock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
set_pte(pte, entry);
local_irq_save(flags);
__flush_tlb_page(get_asid(), p3_addr);
flush_tlb_one(get_asid(), p3_addr);
local_irq_restore(flags);
update_mmu_cache(NULL, p3_addr, entry);
__copy_user_page((void *)p3_addr, from, to);

20
arch/sh/mm/tlb-flush.c
View file

@ -14,7 +14,7 @@
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
{
unsigned int cpu = smp_processor_id();
@ -31,15 +31,15 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
saved_asid = get_asid();
set_asid(asid);
}
__flush_tlb_page(asid, page);
flush_tlb_one(asid, page);
if (saved_asid != MMU_NO_ASID)
set_asid(saved_asid);
local_irq_restore(flags);
}
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
unsigned int cpu = smp_processor_id();
@ -67,7 +67,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
set_asid(asid);
}
while (start < end) {
__flush_tlb_page(asid, start);
flush_tlb_one(asid, start);
start += PAGE_SIZE;
}
if (saved_asid != MMU_NO_ASID)
@ -77,7 +77,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
}
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
unsigned int cpu = smp_processor_id();
unsigned long flags;
@ -86,7 +86,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
local_irq_save(flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
if (size > (MMU_NTLB_ENTRIES/4)) { /* Too many TLB to flush */
flush_tlb_all();
local_flush_tlb_all();
} else {
unsigned long asid;
unsigned long saved_asid = get_asid();
@ -97,7 +97,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
end &= PAGE_MASK;
set_asid(asid);
while (start < end) {
__flush_tlb_page(asid, start);
flush_tlb_one(asid, start);
start += PAGE_SIZE;
}
set_asid(saved_asid);
@ -105,7 +105,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
local_irq_restore(flags);
}
void flush_tlb_mm(struct mm_struct *mm)
void local_flush_tlb_mm(struct mm_struct *mm)
{
unsigned int cpu = smp_processor_id();
@ -122,7 +122,7 @@ void flush_tlb_mm(struct mm_struct *mm)
}
}
void flush_tlb_all(void)
void local_flush_tlb_all(void)
{
unsigned long flags, status;

19
arch/sh/mm/tlb-nommu.c
View file

@ -13,39 +13,33 @@
/*
* Nothing too terribly exciting here ..
*/
void flush_tlb(void)
void local_flush_tlb_all(void)
{
BUG();
}
void flush_tlb_all(void)
void local_flush_tlb_mm(struct mm_struct *mm)
{
BUG();
}
void flush_tlb_mm(struct mm_struct *mm)
{
BUG();
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
BUG();
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
{
BUG();
}
void __flush_tlb_page(unsigned long asid, unsigned long page)
void local_flush_tlb_one(unsigned long asid, unsigned long page)
{
BUG();
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
BUG();
}
@ -55,4 +49,3 @@ void update_mmu_cache(struct vm_area_struct * vma,
{
BUG();
}

2
arch/sh/mm/tlb-sh3.c
View file

@ -12,7 +12,7 @@
#include <asm/system.h>
#include <asm/mmu_context.h>
void __flush_tlb_page(unsigned long asid, unsigned long page)
void local_flush_tlb_one(unsigned long asid, unsigned long page)
{
unsigned long addr, data;
int i, ways = MMU_NTLB_WAYS;

2
arch/sh/mm/tlb-sh4.c
View file

@ -12,7 +12,7 @@
#include <asm/system.h>
#include <asm/mmu_context.h>
void __flush_tlb_page(unsigned long asid, unsigned long page)
void local_flush_tlb_one(unsigned long asid, unsigned long page)
{
unsigned long addr, data;

38
include/asm-sh/tlbflush.h
View file

@ -4,7 +4,6 @@
/*
* TLB flushing:
*
* - flush_tlb() flushes the current mm struct TLBs
* - flush_tlb_all() flushes all processes TLBs
* - flush_tlb_mm(mm) flushes the specified mm context TLB's
* - flush_tlb_page(vma, vmaddr) flushes one page
@ -12,20 +11,45 @@
* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
*/
extern void local_flush_tlb_all(void);
extern void local_flush_tlb_mm(struct mm_struct *mm);
extern void local_flush_tlb_range(struct vm_area_struct *vma,
unsigned long start,
unsigned long end);
extern void local_flush_tlb_page(struct vm_area_struct *vma,
unsigned long page);
extern void local_flush_tlb_kernel_range(unsigned long start,
unsigned long end);
extern void local_flush_tlb_one(unsigned long asid, unsigned long page);
#ifdef CONFIG_SMP
extern void flush_tlb(void);
extern void flush_tlb_all(void);
extern void flush_tlb_mm(struct mm_struct *mm);
extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end);
extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
extern void __flush_tlb_page(unsigned long asid, unsigned long page);
extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
extern void flush_tlb_one(unsigned long asid, unsigned long page);
#else
#define flush_tlb_all() local_flush_tlb_all()
#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
#define flush_tlb_one(asid, page) local_flush_tlb_one(asid, page)
#define flush_tlb_range(vma, start, end) \
local_flush_tlb_range(vma, start, end)
#define flush_tlb_kernel_range(start, end) \
local_flush_tlb_kernel_range(start, end)
#endif /* CONFIG_SMP */
static inline void flush_tlb_pgtables(struct mm_struct *mm,
unsigned long start, unsigned long end)
{ /* Nothing to do */
{
/* Nothing to do */
}
extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
#endif /* __ASM_SH_TLBFLUSH_H */