[PATCH v2 08/21] ath10k: make firmware text debug messages more verbose.

Ben Greear greearb at candelatech.com
Wed Sep 14 08:06:38 PDT 2016

On 09/14/2016 07:12 AM, Valo, Kalle wrote:
> greearb at candelatech.com writes:
>> From: Ben Greear <greearb at candelatech.com>
>> There are not many of these messages producted by the
>> firmware, but they are generally fairly useful, so print
>> them at info level.
>> Signed-off-by: Ben Greear <greearb at candelatech.com>
>> ---
>>   drivers/net/wireless/ath/ath10k/wmi.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>> diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
>> index 1758b4a..d9e4b77 100644
>> --- a/drivers/net/wireless/ath/ath10k/wmi.c
>> +++ b/drivers/net/wireless/ath/ath10k/wmi.c
>> @@ -4050,7 +4050,7 @@ void ath10k_wmi_event_debug_print(struct ath10k *ar, struct sk_buff *skb)
>>   	/* the last byte is always reserved for the null character */
>>   	buf[i] = '\0';
>> -	ath10k_dbg(ar, ATH10K_DBG_WMI_PRINT, "wmi print '%s'\n", buf);
>> +	ath10k_info(ar, "wmi print '%s'\n", buf);
> Useful to whom and how? I understand that for firmware developers this
> is very valuable information and that's why we have a special debug
> level for it. But I suspect that for normal users these are just
> confusing and unnecessarily spam the log.

CT firmare will print out some memory usage info on firmware boot, and that can
allow a discerning individual to tune their vdev, peer, rate-ctrl, and other
object usage in order to make best use of resources in the firmware.

These few lines can greatly aid debugging certain types of crashes and performance
loss in the firmware, so having them readily available in 'dmesg' or similar
for bug reports from the field helps me.

Stock firmware will also print out some resource usage info.  It is just
a few lines on firmware boot, but it is quite useful in my experience.


Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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