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         struct ldt_struct *ldt;
  13
  14 #ifdef CONFIG_X86_64
  15         /* True if mm supports a task running in 32 bit compatibility mode. */
  16         unsigned short ia32_compat;
  17 #endif
  18
  19         struct mutex lock;
  20         void __user *vdso;
  21
  22         atomic_t perf_rdpmc_allowed;    /* nonzero if rdpmc is allowed */
  23 } mm_context_t;
  24
  25 #ifdef CONFIG_SMP
  26 void leave_mm(int cpu);
  27 #else
  28 static inline void leave_mm(int cpu)
  29 {
  30 }
  31 #endif
  32
  33 #endif /* _ASM_X86_MMU_H */