[PATCH] ath10k: add tracing for tx ieee80211 header

[Johannes Berg]

On Tue, 2014-10-28 at 22:18 +0530, Rajkumar Manoharan wrote:
> For packet log, the transmitted frame 802.11 header alone is sufficient.
> Recording entire packet is also consuming lot of disk space. To
> optimize, add tracepoints for sending tx-ed 802.11 headers alone.

FWIW, in iwlwifi I made the data portion (only!) a separate tracing
subsystem, so that you can do

trace-cmd record -e iwlwifi

to get the hdrs, and

trace-cmd record -e iwlwifi -e iwlwifi_data

to get the hdrs, and the data, and then I put the two together in
userspace. That way, "-e iwlwifi" gets most useful stuff, and adding -e
iwlwifi_data when needed still has no duplication.

With what you're suggesting, it will be difficult to control tracing to
do exactly what's needed.

Anyway, I don't really care, but this just caught my eye.

johannes