include/linux/perf_regs.h

   1 #ifndef _LINUX_PERF_REGS_H
   2 #define _LINUX_PERF_REGS_H
   3
   4 struct perf_regs {
   5         __u64           abi;
   6         struct pt_regs  *regs;
   7 };
   8
   9 #ifdef CONFIG_HAVE_PERF_REGS
  10 #include <asm/perf_regs.h>
  11 u64 perf_reg_value(struct pt_regs *regs, int idx);
  12 int perf_reg_validate(u64 mask);
  13 u64 perf_reg_abi(struct task_struct *task);
  14 void perf_get_regs_user(struct perf_regs *regs_user,
  15                         struct pt_regs *regs,
  16                         struct pt_regs *regs_user_copy);
  17 #else
  18 static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
  19 {
  20         return 0;
  21 }
  22
  23 static inline int perf_reg_validate(u64 mask)
  24 {
  25         return mask ? -ENOSYS : 0;
  26 }
  27
  28 static inline u64 perf_reg_abi(struct task_struct *task)
  29 {
  30         return PERF_SAMPLE_REGS_ABI_NONE;
  31 }
  32
  33 static inline void perf_get_regs_user(struct perf_regs *regs_user,
  34                                       struct pt_regs *regs,
  35                                       struct pt_regs *regs_user_copy)
  36 {
  37         regs_user->regs = task_pt_regs(current);
  38         regs_user->abi = perf_reg_abi(current);
  39 }
  40 #endif /* CONFIG_HAVE_PERF_REGS */
  41 #endif /* _LINUX_PERF_REGS_H */