103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
#ifndef _ASM_IA64_TLBFLUSH_H
|
|
#define _ASM_IA64_TLBFLUSH_H
|
|
|
|
/*
|
|
* Copyright (C) 2002 Hewlett-Packard Co
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
|
*/
|
|
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm/intrinsics.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/page.h>
|
|
|
|
/*
|
|
* Now for some TLB flushing routines. This is the kind of stuff that
|
|
* can be very expensive, so try to avoid them whenever possible.
|
|
*/
|
|
extern void setup_ptcg_sem(int max_purges, int from_palo);
|
|
|
|
/*
|
|
* Flush everything (kernel mapping may also have changed due to
|
|
* vmalloc/vfree).
|
|
*/
|
|
extern void local_flush_tlb_all (void);
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern void smp_flush_tlb_all (void);
|
|
extern void smp_flush_tlb_mm (struct mm_struct *mm);
|
|
extern void smp_flush_tlb_cpumask (cpumask_t xcpumask);
|
|
# define flush_tlb_all() smp_flush_tlb_all()
|
|
#else
|
|
# define flush_tlb_all() local_flush_tlb_all()
|
|
# define smp_flush_tlb_cpumask(m) local_flush_tlb_all()
|
|
#endif
|
|
|
|
static inline void
|
|
local_finish_flush_tlb_mm (struct mm_struct *mm)
|
|
{
|
|
if (mm == current->active_mm)
|
|
activate_context(mm);
|
|
}
|
|
|
|
/*
|
|
* Flush a specified user mapping. This is called, e.g., as a result of fork() and
|
|
* exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
|
|
* the PTEs of the parent task.
|
|
*/
|
|
static inline void
|
|
flush_tlb_mm (struct mm_struct *mm)
|
|
{
|
|
if (!mm)
|
|
return;
|
|
|
|
set_bit(mm->context, ia64_ctx.flushmap);
|
|
mm->context = 0;
|
|
|
|
if (atomic_read(&mm->mm_users) == 0)
|
|
return; /* happens as a result of exit_mmap() */
|
|
|
|
#ifdef CONFIG_SMP
|
|
smp_flush_tlb_mm(mm);
|
|
#else
|
|
local_finish_flush_tlb_mm(mm);
|
|
#endif
|
|
}
|
|
|
|
extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
|
|
|
|
/*
|
|
* Page-granular tlb flush.
|
|
*/
|
|
static inline void
|
|
flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
|
|
#else
|
|
if (vma->vm_mm == current->active_mm)
|
|
ia64_ptcl(addr, (PAGE_SHIFT << 2));
|
|
else
|
|
vma->vm_mm->context = 0;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Flush the local TLB. Invoked from another cpu using an IPI.
|
|
*/
|
|
#ifdef CONFIG_SMP
|
|
void smp_local_flush_tlb(void);
|
|
#else
|
|
#define smp_local_flush_tlb()
|
|
#endif
|
|
|
|
static inline void flush_tlb_kernel_range(unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
flush_tlb_all(); /* XXX fix me */
|
|
}
|
|
|
|
#endif /* _ASM_IA64_TLBFLUSH_H */
|