Messages in this thread | | | Date | Tue, 21 Aug 2018 15:49:25 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v5 1/2] media: usb: pwc: Introduce TRACE_EVENTs for pwc_isoc_handler() |
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On Tue, 21 Aug 2018 20:06:28 +0300 "Matwey V. Kornilov" <matwey@sai.msu.ru> wrote:
> There were reports that PWC-based webcams don't work at some > embedded ARM platforms. [1] Isochronous transfer handler seems to > work too long leading to the issues in MUSB USB host subsystem. > Also note, that urb->giveback() handlers are still called with > disabled interrupts. In order to be able to measure performance of > PWC driver, traces are introduced in URB handler section. > > [1] https://www.spinics.net/lists/linux-usb/msg165735.html > > Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> > --- >
From a tracing perspective,
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
-- Steve
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