arch/x86/include/asm/mmu.h

   1 #ifndef _ASM_X86_MMU_H
   2 #define _ASM_X86_MMU_H
   3
   4 #include <linux/spinlock.h>
   5 #include <linux/mutex.h>
   6
   7 /*
   8  * The x86 doesn't have a mmu context, but
   9  * we put the segment information here.
  10  */
  11 typedef struct {
  12         void *ldt;
  13         int size;
  14
  15 #ifdef CONFIG_X86_64
  16         /* True if mm supports a task running in 32 bit compatibility mode. */
  17         unsigned short ia32_compat;
  18 #endif
  19
  20         struct mutex lock;
  21         void __user *vdso;
  22
  23         atomic_t perf_rdpmc_allowed;    /* nonzero if rdpmc is allowed */
  24 } mm_context_t;
  25
  26 #ifdef CONFIG_SMP
  27 void leave_mm(int cpu);
  28 #else
  29 static inline void leave_mm(int cpu)
  30 {
  31 }
  32 #endif
  33
  34 #endif /* _ASM_X86_MMU_H */