Quoting "John W. Linville" <linville@xxxxxxxxxxxxx>:
On Sun, Feb 06, 2011 at 10:35:22AM +0200, Jussi Kivilinna wrote:
This fixes high CPU usage when writing beacon frame to hardware. With this
patch CPU usage of kworker on Intel Atom with 100 TU beacon interval goes
from ~10% down to <1%.
Checking vendor driver appears it's also ignoring fact that endpoints are
interrupt type and is using bulk urbs on these.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>
This patch led to a lengthy thread. I'm not 100% clear on the
outcome, but it seems like the conclusion was that the driver should
be doing something else -- at least that seemed to be the conclusion
for ath9k_htc.
So, is this patch still wanted?
John
It's not needed. The patchset [1] that made write command use
asynchronous URBs lowers CPU usage the other way.
-Jussi
[1] http://marc.info/?l=linux-wireless&m=129753620103065&w=2
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