trace_readwrite.c 1.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Register read and write tracepoints
  4. *
  5. * Copyright (c) 2021, The Linux Foundation. All rights reserved.
  6. */
  7. #include <linux/kallsyms.h>
  8. #include <linux/uaccess.h>
  9. #include <linux/module.h>
  10. #include <linux/ftrace.h>
  11. #include <linux/log_mmiorw.h>
  12. #define CREATE_TRACE_POINTS
  13. #include <trace/events/rwmmio.h>
  14. #ifdef CONFIG_TRACE_MMIO_ACCESS
  15. void __log_write_mmio(u64 val, u8 width, volatile void __iomem *addr)
  16. {
  17. trace_rwmmio_write(CALLER_ADDR0, val, width, addr);
  18. }
  19. EXPORT_SYMBOL_GPL(__log_write_mmio);
  20. EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_write);
  21. void __log_read_mmio(u8 width, const volatile void __iomem *addr)
  22. {
  23. trace_rwmmio_read(CALLER_ADDR0, width, addr);
  24. }
  25. EXPORT_SYMBOL_GPL(__log_read_mmio);
  26. EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_read);
  27. void __log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr)
  28. {
  29. trace_rwmmio_post_read(CALLER_ADDR0, val, width, addr);
  30. }
  31. EXPORT_SYMBOL_GPL(__log_post_read_mmio);
  32. EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_read);
  33. #endif