Home/ Questions/Q 8725371
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-13T08:01:37+00:00

I would like to turn on any debugging facility available in YAFFS. I’m hoping

  • 0

I would like to turn on any debugging facility available in YAFFS. I’m hoping it will help me debug the issue that is occuring when using Flash memory.
Are there any configs in the linux kernel that will help me debug YAFFS?
Thanks in advance.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    There are, according to the documentation:

    Yaffs has a lot of built in tracing to help debug and integrate. The
    tracing is controlled by yaffs_traceMask bitmask which allows various
    sets of tracing to be disabled or enabled at runtime.

    The trace bits are specified in the yaffs_trace.h file.

    The tracing mechanism has also been ‘hijacked’ to provide a control
    mask for extra verification code when the YAFFS_TRACE_VERIFYxxx trace
    bits are selected.

    The tracing mechanism is readily integrated into the system via
    printf-like statements. Tracing is all done through macros which allow
    the strings to be converted into unicode or similar if need be.

    It can be manipulated at runtime, via proc or sysfs interface, e.g.:

    cat +os > /proc/yaffs # Enables YAFFS_TRACE_OS
cat -all+gc > /proc/yaffs # Disables everything then enable YAFFS_TRACE_GC
cat 0xf000 > /proc/yaffs # Set trace mask to specified bitmask.

    For details see: http://www.yaffs.net/yaffs-tuning-and-configuration#Tracing_mechanism

    • 0