perf_regs.h 1.1 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _LINUX_PERF_REGS_H
  3. #define _LINUX_PERF_REGS_H
  4. #include <linux/sched/task_stack.h>
  5. struct perf_regs {
  6. __u64 abi;
  7. struct pt_regs *regs;
  8. };
  9. #ifdef CONFIG_HAVE_PERF_REGS
  10. #include <asm/perf_regs.h>
  11. #ifndef PERF_REG_EXTENDED_MASK
  12. #define PERF_REG_EXTENDED_MASK 0
  13. #endif
  14. u64 perf_reg_value(struct pt_regs *regs, int idx);
  15. int perf_reg_validate(u64 mask);
  16. u64 perf_reg_abi(struct task_struct *task);
  17. void perf_get_regs_user(struct perf_regs *regs_user,
  18. struct pt_regs *regs);
  19. #else
  20. #define PERF_REG_EXTENDED_MASK 0
  21. static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
  22. {
  23. return 0;
  24. }
  25. static inline int perf_reg_validate(u64 mask)
  26. {
  27. return mask ? -ENOSYS : 0;
  28. }
  29. static inline u64 perf_reg_abi(struct task_struct *task)
  30. {
  31. return PERF_SAMPLE_REGS_ABI_NONE;
  32. }
  33. static inline void perf_get_regs_user(struct perf_regs *regs_user,
  34. struct pt_regs *regs)
  35. {
  36. regs_user->regs = task_pt_regs(current);
  37. regs_user->abi = perf_reg_abi(current);
  38. }
  39. #endif /* CONFIG_HAVE_PERF_REGS */
  40. #endif /* _LINUX_PERF_REGS_H */