| /* I2C message transfer tracepoints |
| * |
| * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public Licence |
| * as published by the Free Software Foundation; either version |
| * 2 of the Licence, or (at your option) any later version. |
| */ |
| #undef TRACE_SYSTEM |
| #define TRACE_SYSTEM i2c |
| |
| #if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ) |
| #define _TRACE_I2C_H |
| |
| #include <linux/i2c.h> |
| #include <linux/tracepoint.h> |
| |
| /* |
| * drivers/i2c/i2c-core-base.c |
| */ |
| extern int i2c_transfer_trace_reg(void); |
| extern void i2c_transfer_trace_unreg(void); |
| |
| /* |
| * __i2c_transfer() write request |
| */ |
| TRACE_EVENT_FN(i2c_write, |
| TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| int num), |
| TP_ARGS(adap, msg, num), |
| TP_STRUCT__entry( |
| __field(int, adapter_nr ) |
| __field(__u16, msg_nr ) |
| __field(__u16, addr ) |
| __field(__u16, flags ) |
| __field(__u16, len ) |
| __dynamic_array(__u8, buf, msg->len) ), |
| TP_fast_assign( |
| __entry->adapter_nr = adap->nr; |
| __entry->msg_nr = num; |
| __entry->addr = msg->addr; |
| __entry->flags = msg->flags; |
| __entry->len = msg->len; |
| memcpy(__get_dynamic_array(buf), msg->buf, msg->len); |
| ), |
| TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", |
| __entry->adapter_nr, |
| __entry->msg_nr, |
| __entry->addr, |
| __entry->flags, |
| __entry->len, |
| __entry->len, __get_dynamic_array(buf) |
| ), |
| i2c_transfer_trace_reg, |
| i2c_transfer_trace_unreg); |
| |
| /* |
| * __i2c_transfer() read request |
| */ |
| TRACE_EVENT_FN(i2c_read, |
| TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| int num), |
| TP_ARGS(adap, msg, num), |
| TP_STRUCT__entry( |
| __field(int, adapter_nr ) |
| __field(__u16, msg_nr ) |
| __field(__u16, addr ) |
| __field(__u16, flags ) |
| __field(__u16, len ) |
| ), |
| TP_fast_assign( |
| __entry->adapter_nr = adap->nr; |
| __entry->msg_nr = num; |
| __entry->addr = msg->addr; |
| __entry->flags = msg->flags; |
| __entry->len = msg->len; |
| ), |
| TP_printk("i2c-%d #%u a=%03x f=%04x l=%u", |
| __entry->adapter_nr, |
| __entry->msg_nr, |
| __entry->addr, |
| __entry->flags, |
| __entry->len |
| ), |
| i2c_transfer_trace_reg, |
| i2c_transfer_trace_unreg); |
| |
| /* |
| * __i2c_transfer() read reply |
| */ |
| TRACE_EVENT_FN(i2c_reply, |
| TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| int num), |
| TP_ARGS(adap, msg, num), |
| TP_STRUCT__entry( |
| __field(int, adapter_nr ) |
| __field(__u16, msg_nr ) |
| __field(__u16, addr ) |
| __field(__u16, flags ) |
| __field(__u16, len ) |
| __dynamic_array(__u8, buf, msg->len) ), |
| TP_fast_assign( |
| __entry->adapter_nr = adap->nr; |
| __entry->msg_nr = num; |
| __entry->addr = msg->addr; |
| __entry->flags = msg->flags; |
| __entry->len = msg->len; |
| memcpy(__get_dynamic_array(buf), msg->buf, msg->len); |
| ), |
| TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", |
| __entry->adapter_nr, |
| __entry->msg_nr, |
| __entry->addr, |
| __entry->flags, |
| __entry->len, |
| __entry->len, __get_dynamic_array(buf) |
| ), |
| i2c_transfer_trace_reg, |
| i2c_transfer_trace_unreg); |
| |
| /* |
| * __i2c_transfer() result |
| */ |
| TRACE_EVENT_FN(i2c_result, |
| TP_PROTO(const struct i2c_adapter *adap, int num, int ret), |
| TP_ARGS(adap, num, ret), |
| TP_STRUCT__entry( |
| __field(int, adapter_nr ) |
| __field(__u16, nr_msgs ) |
| __field(__s16, ret ) |
| ), |
| TP_fast_assign( |
| __entry->adapter_nr = adap->nr; |
| __entry->nr_msgs = num; |
| __entry->ret = ret; |
| ), |
| TP_printk("i2c-%d n=%u ret=%d", |
| __entry->adapter_nr, |
| __entry->nr_msgs, |
| __entry->ret |
| ), |
| i2c_transfer_trace_reg, |
| i2c_transfer_trace_unreg); |
| |
| #endif /* _TRACE_I2C_H */ |
| |
| /* This part must be outside protection */ |
| #include <trace/define_trace.h> |