MN10300: Rename __flush_tlb*() to local_flush_tlb*()

Rename __flush_tlb*() to local_flush_tlb*() as it's more appropriate, and ready
to differentiate local from global TLB flushes when SMP is introduced.

Whilst we're at it, get rid of __flush_tlb_global() and make
local_flush_tlb_page() take an mm_struct pointer rather than VMA pointer.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2010-10-27 17:28:49 +01:00
parent 8f19e3daf3
commit 492e675116
6 changed files with 42 additions and 28 deletions

View file

@ -87,7 +87,7 @@ static inline unsigned long __kmap_atomic(struct page *page)
BUG();
#endif
set_pte(kmap_pte - idx, mk_pte(page, kmap_prot));
__flush_tlb_one(vaddr);
local_flush_tlb_one(vaddr);
return vaddr;
}
@ -116,7 +116,7 @@ static inline void __kunmap_atomic(unsigned long vaddr)
* this pte without first remap it
*/
pte_clear(kmap_pte - idx);
__flush_tlb_one(vaddr);
local_flush_tlb_one(vaddr);
}
#endif
pagefault_enable();

View file

@ -58,7 +58,7 @@ static inline unsigned long allocate_mmu_context(struct mm_struct *mm)
if (!(mc & MMU_CONTEXT_TLBPID_MASK)) {
/* we exhausted the TLB PIDs of this version on this CPU, so we
* flush this CPU's TLB in its entirety and start new cycle */
flush_tlb_all();
local_flush_tlb_all();
/* fix the TLB version if needed (we avoid version #0 so as to
* distingush MMU_NO_CONTEXT) */

View file

@ -13,21 +13,37 @@
#include <asm/processor.h>
#define __flush_tlb() \
do { \
int w; \
__asm__ __volatile__ \
(" mov %1,%0 \n" \
" or %2,%0 \n" \
" mov %0,%1 \n" \
: "=d"(w) \
: "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV) \
: "cc", "memory" \
); \
} while (0)
/**
* local_flush_tlb - Flush the current MM's entries from the local CPU's TLBs
*/
static inline void local_flush_tlb(void)
{
int w;
asm volatile(
" mov %1,%0 \n"
" or %2,%0 \n"
" mov %0,%1 \n"
: "=d"(w)
: "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)
: "cc", "memory");
}
#define __flush_tlb_all() __flush_tlb()
#define __flush_tlb_one(addr) __flush_tlb()
/**
* local_flush_tlb_all - Flush all entries from the local CPU's TLBs
*/
#define local_flush_tlb_all() local_flush_tlb()
/**
* local_flush_tlb_one - Flush one entry from the local CPU's TLBs
*/
#define local_flush_tlb_one(addr) local_flush_tlb()
/**
* local_flush_tlb_page - Flush a page's entry from the local CPU's TLBs
* @mm: The MM to flush for
* @addr: The address of the target page in RAM (not its page struct)
*/
extern void local_flush_tlb_page(struct mm_struct *mm, unsigned long addr);
/*
@ -43,14 +59,14 @@ do { \
#define flush_tlb_all() \
do { \
preempt_disable(); \
__flush_tlb_all(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
#define flush_tlb_mm(mm) \
do { \
preempt_disable(); \
__flush_tlb_all(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
@ -59,13 +75,13 @@ do { \
unsigned long __s __attribute__((unused)) = (start); \
unsigned long __e __attribute__((unused)) = (end); \
preempt_disable(); \
__flush_tlb_all(); \
local_flush_tlb_all(); \
preempt_enable(); \
} while (0)
#define flush_tlb_page(vma, addr) local_flush_tlb_page((vma)->vm_mm, addr)
#define flush_tlb() flush_tlb_all()
#define __flush_tlb_global() flush_tlb_all()
#define flush_tlb() flush_tlb_all()
#define flush_tlb_kernel_range(start, end) \
do { \
unsigned long __s __attribute__((unused)) = (start); \
@ -73,8 +89,6 @@ do { \
flush_tlb_all(); \
} while (0)
extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
#define flush_tlb_pgtables(mm, start, end) do {} while (0)
#endif /* _ASM_TLBFLUSH_H */

View file

@ -73,7 +73,7 @@ void __init paging_init(void)
/* pass the memory from the bootmem allocator to the main allocator */
free_area_init(zones_size);
__flush_tlb_all();
local_flush_tlb_all();
}
/*

View file

@ -23,7 +23,7 @@ unsigned long mmu_context_cache[NR_CPUS] = {
/*
* flush the specified TLB entry
*/
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
void local_flush_tlb_page(struct mm_struct *mm, unsigned long addr)
{
unsigned long pteu, cnx, flags;
@ -33,7 +33,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
* interference from vmalloc'd regions */
local_irq_save(flags);
cnx = mm_context(vma->vm_mm);
cnx = mm_context(mm);
if (cnx != MMU_NO_CONTEXT) {
pteu = addr | (cnx & 0x000000ffUL);

View file

@ -59,7 +59,7 @@ void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
* It's enough to flush this one mapping.
* (PGE mappings get flushed as well)
*/
__flush_tlb_one(vaddr);
local_flush_tlb_one(vaddr);
}
pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)