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usb: musb: add tracepoints to dump interrupt events

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This adds tracepoints to dump musb interrupt events.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bin Liu 2016-06-30 12:12:25 -05:00 committed by Greg Kroah-Hartman
parent c74173fdd4
commit cfb9a1bc6e
2 changed files with 22 additions and 3 deletions
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4
drivers/usb/musb/musb_core.c
View File

@ -1588,9 +1588,7 @@ irqreturn_t musb_interrupt(struct musb *musb)
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
dev_dbg(musb->controller, "** IRQ %s usb%04x tx%04x rx%04x\n",
is_host_active(musb) ? "host" : "peripheral",
musb->int_usb, musb->int_tx, musb->int_rx);
trace_musb_isr(musb);
/**
* According to Mentor Graphics' documentation, flowchart on page 98,

21
drivers/usb/musb/musb_trace.h
View File

@ -128,6 +128,27 @@ DEFINE_EVENT(musb_regl, musb_writel,
TP_ARGS(caller, addr, offset, data)
);
TRACE_EVENT(musb_isr,
TP_PROTO(struct musb *musb),
TP_ARGS(musb),
TP_STRUCT__entry(
__string(name, dev_name(musb->controller))
__field(u8, int_usb)
__field(u16, int_tx)
__field(u16, int_rx)
),
TP_fast_assign(
__assign_str(name, dev_name(musb->controller));
__entry->int_usb = musb->int_usb;
__entry->int_tx = musb->int_tx;
__entry->int_rx = musb->int_rx;
),
TP_printk("%s: usb %02x, tx %04x, rx %04x",
__get_str(name), __entry->int_usb,
__entry->int_tx, __entry->int_rx
)
);
#endif /* __MUSB_TRACE_H */
/* this part has to be here */