#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. */ /* * 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 TLB entries mapping the virtually mapped linear page * table corresponding to address range [START-END). */ static inline void flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long end) { /* * Deprecated. The virtual page table is now flushed via the normal gather/flush * interface (see tlb.h). */ } /* * 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 #define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */ #endif /* _ASM_IA64_TLBFLUSH_H */