diff options
| author | Bin Liu <b-liu@ti.com> | 2016-06-30 12:12:24 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-17 08:23:57 +0900 |
| commit | c74173fdd4fba23f237af48dff95f613f011cee3 (patch) | |
| tree | ed3800e7250aeadb11c488e57061e59f24b16780 /drivers/usb/musb/musb_trace.h | |
| parent | 086b288282884437cd588893d4501a8bbe4eb78c (diff) | |
| download | talos-obmc-linux-c74173fdd4fba23f237af48dff95f613f011cee3.tar.gz talos-obmc-linux-c74173fdd4fba23f237af48dff95f613f011cee3.zip | |
usb: musb: add tracepoints for register access
This adds tracepoints to musb register read/write wrappers to get
trace log for register access.
The default tacepoint log prefix here would be musb_readX/writeX(),
which is not much helpful. So this patch let the tracepoints use
__buildin_return_address(0) to print the caller funciton name to
provide more context of the register access.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb/musb_trace.h')
| -rw-r--r-- | drivers/usb/musb/musb_trace.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_trace.h b/drivers/usb/musb/musb_trace.h index c6c593ec3aa7..c974f48ee5d8 100644 --- a/drivers/usb/musb/musb_trace.h +++ b/drivers/usb/musb/musb_trace.h @@ -41,6 +41,93 @@ TRACE_EVENT(musb_log, TP_printk("%s: %s", __get_str(name), __get_str(msg)) ); +DECLARE_EVENT_CLASS(musb_regb, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u8 data), + TP_ARGS(caller, addr, offset, data), + TP_STRUCT__entry( + __field(void *, caller) + __field(const void *, addr) + __field(unsigned int, offset) + __field(u8, data) + ), + TP_fast_assign( + __entry->caller = caller; + __entry->addr = addr; + __entry->offset = offset; + __entry->data = data; + ), + TP_printk("%pS: %p + %04x: %02x", + __entry->caller, __entry->addr, __entry->offset, __entry->data) +); + +DEFINE_EVENT(musb_regb, musb_readb, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u8 data), + TP_ARGS(caller, addr, offset, data) +); + +DEFINE_EVENT(musb_regb, musb_writeb, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u8 data), + TP_ARGS(caller, addr, offset, data) +); + +DECLARE_EVENT_CLASS(musb_regw, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u16 data), + TP_ARGS(caller, addr, offset, data), + TP_STRUCT__entry( + __field(void *, caller) + __field(const void *, addr) + __field(unsigned int, offset) + __field(u16, data) + ), + TP_fast_assign( + __entry->caller = caller; + __entry->addr = addr; + __entry->offset = offset; + __entry->data = data; + ), + TP_printk("%pS: %p + %04x: %04x", + __entry->caller, __entry->addr, __entry->offset, __entry->data) +); + +DEFINE_EVENT(musb_regw, musb_readw, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u16 data), + TP_ARGS(caller, addr, offset, data) +); + +DEFINE_EVENT(musb_regw, musb_writew, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u16 data), + TP_ARGS(caller, addr, offset, data) +); + +DECLARE_EVENT_CLASS(musb_regl, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u32 data), + TP_ARGS(caller, addr, offset, data), + TP_STRUCT__entry( + __field(void *, caller) + __field(const void *, addr) + __field(unsigned int, offset) + __field(u32, data) + ), + TP_fast_assign( + __entry->caller = caller; + __entry->addr = addr; + __entry->offset = offset; + __entry->data = data; + ), + TP_printk("%pS: %p + %04x: %08x", + __entry->caller, __entry->addr, __entry->offset, __entry->data) +); + +DEFINE_EVENT(musb_regl, musb_readl, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u32 data), + TP_ARGS(caller, addr, offset, data) +); + +DEFINE_EVENT(musb_regl, musb_writel, + TP_PROTO(void *caller, const void *addr, unsigned int offset, u32 data), + TP_ARGS(caller, addr, offset, data) +); + #endif /* __MUSB_TRACE_H */ /* this part has to be here */ |
