Re: [Intel-wired-lan] [PATCH net-next v14 4/5] ice: add ability to read FW log data and configure the number of log buffers

[Tony Nguyen <anthony.l.nguyen@intel.com>]

On 7/13/2023 3:25 PM, Paul M Stillwell Jr wrote:
> Once logging is enabled the user should read the data from the 'data'
> file. The data is in the form of a binary blob that can be sent to Intel
> for decoding. To read the data use a command like:
> 
> cat /sys/kernel/debug/ice/0000\:18\:00.0/fwlog/data > log_data.bin
> 
> If the user wants to clear the FW log data that has been stored in the
> driver then they can write a 0 to the 'data' file and that will clear
> the data.
> 
> In addition to being able to read the data the user can configure how
> many buffers can be used to store the FW logs within the driver. This
> allows the user to increase/decrease the number of buffers used based on
> the users situation. The buffers are used as a ring so if the driver
> runs out of buffers then it will overwrite data. To change the number of
> buffers the user can write to the 'nr_buffs' file like this:
> 
> echo 128 > /sys/kernel/debug/ice/0000\:18\:00.0/fwlog/nr_buffs
> 
> The value written to the file must be a power of 2 value between 1 (not
> recommended) and 512.
> 
> Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>

lkp is reporting an issue that came from this:

https://lore.kernel.org/intel-wired-lan/202307242017.3f4YsHnA-lkp@intel.com/
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