diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 10:22:01 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 10:22:01 -0700 |
commit | 5b34653963de7a6d0d8c783527457d68fddc60fb (patch) | |
tree | 1a234741e1823a54cd0514616f783b4cf503a528 /include/asm-x86/tlbflush.h | |
parent | 765426e8ee4c0ab2bc9d44951f4865b8494cdbd0 (diff) | |
parent | 5e1b00758b5a8bee9d42515bffdaf305a32f1b04 (diff) |
Merge branch 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits)
x86: canonicalize remaining header guards
x86: drop double underscores from header guards
x86: Fix ASM_X86__ header guards
x86, um: get rid of uml-config.h
x86, um: get rid of arch/um/Kconfig.arch
x86, um: get rid of arch/um/os symlink
x86, um: get rid of excessive includes of uml-config.h
x86, um: get rid of header symlinks
x86, um: merge Kconfig.i386 and Kconfig.x86_64
x86, um: get rid of sysdep symlink
x86, um: trim the junk from uml ptrace-*.h
x86, um: take vm-flags.h to sysdep
x86, um: get rid of uml asm/arch
x86, um: get rid of uml highmem.h
x86, um: get rid of uml unistd.h
x86, um: get rid of system.h -> system.h include
x86, um: uml atomic.h is not needed anymore
x86, um: untangle uml ldt.h
x86, um: get rid of more uml asm/arch uses
x86, um: remove dead header (uml module-generic.h; never used these days)
...
Diffstat (limited to 'include/asm-x86/tlbflush.h')
-rw-r--r-- | include/asm-x86/tlbflush.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/include/asm-x86/tlbflush.h b/include/asm-x86/tlbflush.h deleted file mode 100644 index 3cdd08b5bdb..00000000000 --- a/include/asm-x86/tlbflush.h +++ /dev/null @@ -1,178 +0,0 @@ -#ifndef ASM_X86__TLBFLUSH_H -#define ASM_X86__TLBFLUSH_H - -#include <linux/mm.h> -#include <linux/sched.h> - -#include <asm/processor.h> -#include <asm/system.h> - -#ifdef CONFIG_PARAVIRT -#include <asm/paravirt.h> -#else -#define __flush_tlb() __native_flush_tlb() -#define __flush_tlb_global() __native_flush_tlb_global() -#define __flush_tlb_single(addr) __native_flush_tlb_single(addr) -#endif - -static inline void __native_flush_tlb(void) -{ - write_cr3(read_cr3()); -} - -static inline void __native_flush_tlb_global(void) -{ - unsigned long flags; - unsigned long cr4; - - /* - * Read-modify-write to CR4 - protect it from preemption and - * from interrupts. (Use the raw variant because this code can - * be called from deep inside debugging code.) - */ - raw_local_irq_save(flags); - - cr4 = read_cr4(); - /* clear PGE */ - write_cr4(cr4 & ~X86_CR4_PGE); - /* write old PGE again and flush TLBs */ - write_cr4(cr4); - - raw_local_irq_restore(flags); -} - -static inline void __native_flush_tlb_single(unsigned long addr) -{ - asm volatile("invlpg (%0)" ::"r" (addr) : "memory"); -} - -static inline void __flush_tlb_all(void) -{ - if (cpu_has_pge) - __flush_tlb_global(); - else - __flush_tlb(); -} - -static inline void __flush_tlb_one(unsigned long addr) -{ - if (cpu_has_invlpg) - __flush_tlb_single(addr); - else - __flush_tlb(); -} - -#ifdef CONFIG_X86_32 -# define TLB_FLUSH_ALL 0xffffffff -#else -# define TLB_FLUSH_ALL -1ULL -#endif - -/* - * 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 - * - flush_tlb_range(vma, start, end) flushes a range of pages - * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages - * - flush_tlb_others(cpumask, mm, va) flushes TLBs on other cpus - * - * ..but the i386 has somewhat limited tlb flushing capabilities, - * and page-granular flushes are available only on i486 and up. - * - * x86-64 can only flush individual pages or full VMs. For a range flush - * we always do the full VM. Might be worth trying if for a small - * range a few INVLPGs in a row are a win. - */ - -#ifndef CONFIG_SMP - -#define flush_tlb() __flush_tlb() -#define flush_tlb_all() __flush_tlb_all() -#define local_flush_tlb() __flush_tlb() - -static inline void flush_tlb_mm(struct mm_struct *mm) -{ - if (mm == current->active_mm) - __flush_tlb(); -} - -static inline void flush_tlb_page(struct vm_area_struct *vma, - unsigned long addr) -{ - if (vma->vm_mm == current->active_mm) - __flush_tlb_one(addr); -} - -static inline void flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - if (vma->vm_mm == current->active_mm) - __flush_tlb(); -} - -static inline void native_flush_tlb_others(const cpumask_t *cpumask, - struct mm_struct *mm, - unsigned long va) -{ -} - -static inline void reset_lazy_tlbstate(void) -{ -} - -#else /* SMP */ - -#include <asm/smp.h> - -#define local_flush_tlb() __flush_tlb() - -extern void flush_tlb_all(void); -extern void flush_tlb_current_task(void); -extern void flush_tlb_mm(struct mm_struct *); -extern void flush_tlb_page(struct vm_area_struct *, unsigned long); - -#define flush_tlb() flush_tlb_current_task() - -static inline void flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - flush_tlb_mm(vma->vm_mm); -} - -void native_flush_tlb_others(const cpumask_t *cpumask, struct mm_struct *mm, - unsigned long va); - -#define TLBSTATE_OK 1 -#define TLBSTATE_LAZY 2 - -#ifdef CONFIG_X86_32 -struct tlb_state { - struct mm_struct *active_mm; - int state; - char __cacheline_padding[L1_CACHE_BYTES-8]; -}; -DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate); - -void reset_lazy_tlbstate(void); -#else -static inline void reset_lazy_tlbstate(void) -{ -} -#endif - -#endif /* SMP */ - -#ifndef CONFIG_PARAVIRT -#define flush_tlb_others(mask, mm, va) native_flush_tlb_others(&mask, mm, va) -#endif - -static inline void flush_tlb_kernel_range(unsigned long start, - unsigned long end) -{ - flush_tlb_all(); -} - -#endif /* ASM_X86__TLBFLUSH_H */ |