diff options
| author |   Felipe Balbi <balbi@ti.com> | 2014-04-30 17:45:10 -0500 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-09-05 09:55:51 -0500 |
| commit | 2c4cbe6e5a9c71408b496e00a78ea9284e98af16 (patch) | |
| tree | c90423ae169751bf43925c9a37734762199ec803 /drivers/usb/dwc3/trace.c | |
| parent | usb: dwc3: gadget: cmd argument should always be unsigned (diff) | |
| download | linux-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.tar.xz linux-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.zip | |
usb: dwc3: add tracepoints to aid debugging
When we're debugging hard-to-reproduce and time-sensitive
use cases, printk() poses too much overhead. That's when
the kernel's tracing infrastructure comes into play.
This patch implements a few initial tracepoints for the
dwc3 driver. More traces can be added as necessary in order
to ease the task of debugging dwc3.
Reviewed-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/trace.c')
| -rw-r--r-- | drivers/usb/dwc3/trace.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/trace.c b/drivers/usb/dwc3/trace.c new file mode 100644 index 000000000000..6cd166412ad0 --- /dev/null +++ b/drivers/usb/dwc3/trace.c @@ -0,0 +1,19 @@ +/** + * trace.c - DesignWare USB3 DRD Controller Trace Support + * + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define CREATE_TRACE_POINTS +#include "trace.h" |