LXR linux/include/linux/perf

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_PERF_REGS_H
   3#define _LINUX_PERF_REGS_H
   4
   5#include <linux/sched/task_stack.h>
   6
   7struct perf_regs {
   8        __u64           abi;
   9        struct pt_regs  *regs;
  10};
  11
  12#ifdef CONFIG_HAVE_PERF_REGS
  13#include <asm/perf_regs.h>
  14
  15#ifndef PERF_REG_EXTENDED_MASK
  16#define PERF_REG_EXTENDED_MASK  0
  17#endif
  18
  19u64 perf_reg_value(struct pt_regs *regs, int idx);
  20int perf_reg_validate(u64 mask);
  21u64 perf_reg_abi(struct task_struct *task);
  22void perf_get_regs_user(struct perf_regs *regs_user,
  23                        struct pt_regs *regs);
  24#else
  25
  26#define PERF_REG_EXTENDED_MASK  0
  27
  28static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
  29{
  30        return 0;
  31}
  32
  33static inline int perf_reg_validate(u64 mask)
  34{
  35        return mask ? -ENOSYS : 0;
  36}
  37
  38static inline u64 perf_reg_abi(struct task_struct *task)
  39{
  40        return PERF_SAMPLE_REGS_ABI_NONE;
  41}
  42
  43static inline void perf_get_regs_user(struct perf_regs *regs_user,
  44                                      struct pt_regs *regs)
  45{
  46        regs_user->regs = task_pt_regs(current);
  47        regs_user->abi = perf_reg_abi(current);
  48}
  49#endif /* CONFIG_HAVE_PERF_REGS */
  50#endif /* _LINUX_PERF_REGS_H */
  51