cpuinfo.c 740 B

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  1. // SPDX-License-Identifier: GPL-2.0
  2. #include <linux/cpufreq.h>
  3. #include <linux/fs.h>
  4. #include <linux/init.h>
  5. #include <linux/proc_fs.h>
  6. #include <linux/seq_file.h>
  7. __weak void arch_freq_prepare_all(void)
  8. {
  9. }
  10. extern const struct seq_operations cpuinfo_op;
  11. static int cpuinfo_open(struct inode *inode, struct file *file)
  12. {
  13. arch_freq_prepare_all();
  14. return seq_open(file, &cpuinfo_op);
  15. }
  16. static const struct proc_ops cpuinfo_proc_ops = {
  17. .proc_flags = PROC_ENTRY_PERMANENT,
  18. .proc_open = cpuinfo_open,
  19. .proc_read_iter = seq_read_iter,
  20. .proc_lseek = seq_lseek,
  21. .proc_release = seq_release,
  22. };
  23. static int __init proc_cpuinfo_init(void)
  24. {
  25. proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
  26. return 0;
  27. }
  28. fs_initcall(proc_cpuinfo_init);