LXR linux/arch/arm/kernel/perf

   1
   2#include <linux/errno.h>
   3#include <linux/kernel.h>
   4#include <linux/perf_event.h>
   5#include <linux/bug.h>
   6#include <asm/perf_regs.h>
   7#include <asm/ptrace.h>
   8
   9u64 perf_reg_value(struct pt_regs *regs, int idx)
  10{
  11        if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM_MAX))
  12                return 0;
  13
  14        return regs->uregs[idx];
  15}
  16
  17#define REG_RESERVED (~((1ULL << PERF_REG_ARM_MAX) - 1))
  18
  19int perf_reg_validate(u64 mask)
  20{
  21        if (!mask || mask & REG_RESERVED)
  22                return -EINVAL;
  23
  24        return 0;
  25}
  26
  27u64 perf_reg_abi(struct task_struct *task)
  28{
  29        return PERF_SAMPLE_REGS_ABI_32;
  30}
  31
  32void perf_get_regs_user(struct perf_regs *regs_user,
  33                        struct pt_regs *regs,
  34                        struct pt_regs *regs_user_copy)
  35{
  36        regs_user->regs = task_pt_regs(current);
  37        regs_user->abi = perf_reg_abi(current);
  38}
  39