[PATCH] ath10k: add configurable debugging.
Arend van Spriel
arend.vanspriel at broadcom.com
Wed May 31 13:20:45 PDT 2017
On 31-05-17 14:16, Kalle Valo wrote:
> Adrian Chadd <adrian at freebsd.org> writes:
>> This adds a few configurable debugging options:
>> * driver debugging and tracing is now configurable per device
>> * driver debugging and tracing is now configurable at runtime
>> * the debugging / tracing is not run at all (besides a mask check)
>> unless the specific debugging bitmap field is configured.
>> Signed-off-by: Adrian Chadd <adrian at FreeBSD.org>
>> --- a/drivers/net/wireless/ath/ath10k/core.c
>> +++ b/drivers/net/wireless/ath/ath10k/core.c
>> @@ -2444,6 +2444,8 @@ struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev,
>> ar->hw_rev = hw_rev;
>> ar->hif.ops = hif_ops;
>> ar->hif.bus = bus;
>> + ar->debug_mask = ath10k_debug_mask;
>> + ar->trace_debug_mask = ath10k_debug_mask;
> Until now tracing has been always enabled, irrespective what debug_mask
> has contained. Now you are changing that and by default log messages are
> not delivered through tracing until user enables them. So I think to
> keep the old behaviour trace_debug_mask should be ATH10K_DBG_ANY
> (0xffffffff) by default and the user can modify the mask per device via
> the debugfs file.
> But is it really needed to be able to filter trace messages? debug_mask
> I understand, but not sure about trace_debug_mask.
FWIW, in brcmfmac I decided not to filter trace messages. The overhead
is relatively small and if needed you can pass filter expressions with
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