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| 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/debug.h | |
| parent | 3ece0ec474bf3cea9eefa7f92e3d4b6c3f9f71fd (diff) | |
| download | op-kernel-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.zip op-kernel-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.tar.gz | |
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/debug.h')
| -rw-r--r-- | drivers/usb/dwc3/debug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 12ff4c9..07fbc2d 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -214,6 +214,8 @@ static inline const char *dwc3_gadget_event_type_string(u8 event) } } +void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...); + #ifdef CONFIG_DEBUG_FS extern int dwc3_debugfs_init(struct dwc3 *); extern void dwc3_debugfs_exit(struct dwc3 *); |
