| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* I2C message transfer tracepoints |
| 3 | * |
| 4 | * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. |
| 5 | * Written by David Howells (dhowells@redhat.com) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | #undef TRACE_SYSTEM |
| 8 | #define TRACE_SYSTEM i2c |
| 9 | |
| 10 | #if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ) |
| 11 | #define _TRACE_I2C_H |
| 12 | |
| 13 | #include <linux/i2c.h> |
| 14 | #include <linux/tracepoint.h> |
| 15 | |
| 16 | /* |
| 17 | * drivers/i2c/i2c-core-base.c |
| 18 | */ |
| 19 | extern int i2c_transfer_trace_reg(void); |
| 20 | extern void i2c_transfer_trace_unreg(void); |
| 21 | |
| 22 | /* |
| 23 | * __i2c_transfer() write request |
| 24 | */ |
| 25 | TRACE_EVENT_FN(i2c_write, |
| 26 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| 27 | int num), |
| 28 | TP_ARGS(adap, msg, num), |
| 29 | TP_STRUCT__entry( |
| 30 | __field(int, adapter_nr ) |
| 31 | __field(__u16, msg_nr ) |
| 32 | __field(__u16, addr ) |
| 33 | __field(__u16, flags ) |
| 34 | __field(__u16, len ) |
| 35 | __dynamic_array(__u8, buf, msg->len) ), |
| 36 | TP_fast_assign( |
| 37 | __entry->adapter_nr = adap->nr; |
| 38 | __entry->msg_nr = num; |
| 39 | __entry->addr = msg->addr; |
| 40 | __entry->flags = msg->flags; |
| 41 | __entry->len = msg->len; |
| 42 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); |
| 43 | ), |
| 44 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", |
| 45 | __entry->adapter_nr, |
| 46 | __entry->msg_nr, |
| 47 | __entry->addr, |
| 48 | __entry->flags, |
| 49 | __entry->len, |
| 50 | __entry->len, __get_dynamic_array(buf) |
| 51 | ), |
| 52 | i2c_transfer_trace_reg, |
| 53 | i2c_transfer_trace_unreg); |
| 54 | |
| 55 | /* |
| 56 | * __i2c_transfer() read request |
| 57 | */ |
| 58 | TRACE_EVENT_FN(i2c_read, |
| 59 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| 60 | int num), |
| 61 | TP_ARGS(adap, msg, num), |
| 62 | TP_STRUCT__entry( |
| 63 | __field(int, adapter_nr ) |
| 64 | __field(__u16, msg_nr ) |
| 65 | __field(__u16, addr ) |
| 66 | __field(__u16, flags ) |
| 67 | __field(__u16, len ) |
| 68 | ), |
| 69 | TP_fast_assign( |
| 70 | __entry->adapter_nr = adap->nr; |
| 71 | __entry->msg_nr = num; |
| 72 | __entry->addr = msg->addr; |
| 73 | __entry->flags = msg->flags; |
| 74 | __entry->len = msg->len; |
| 75 | ), |
| 76 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u", |
| 77 | __entry->adapter_nr, |
| 78 | __entry->msg_nr, |
| 79 | __entry->addr, |
| 80 | __entry->flags, |
| 81 | __entry->len |
| 82 | ), |
| 83 | i2c_transfer_trace_reg, |
| 84 | i2c_transfer_trace_unreg); |
| 85 | |
| 86 | /* |
| 87 | * __i2c_transfer() read reply |
| 88 | */ |
| 89 | TRACE_EVENT_FN(i2c_reply, |
| 90 | TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, |
| 91 | int num), |
| 92 | TP_ARGS(adap, msg, num), |
| 93 | TP_STRUCT__entry( |
| 94 | __field(int, adapter_nr ) |
| 95 | __field(__u16, msg_nr ) |
| 96 | __field(__u16, addr ) |
| 97 | __field(__u16, flags ) |
| 98 | __field(__u16, len ) |
| 99 | __dynamic_array(__u8, buf, msg->len) ), |
| 100 | TP_fast_assign( |
| 101 | __entry->adapter_nr = adap->nr; |
| 102 | __entry->msg_nr = num; |
| 103 | __entry->addr = msg->addr; |
| 104 | __entry->flags = msg->flags; |
| 105 | __entry->len = msg->len; |
| 106 | memcpy(__get_dynamic_array(buf), msg->buf, msg->len); |
| 107 | ), |
| 108 | TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", |
| 109 | __entry->adapter_nr, |
| 110 | __entry->msg_nr, |
| 111 | __entry->addr, |
| 112 | __entry->flags, |
| 113 | __entry->len, |
| 114 | __entry->len, __get_dynamic_array(buf) |
| 115 | ), |
| 116 | i2c_transfer_trace_reg, |
| 117 | i2c_transfer_trace_unreg); |
| 118 | |
| 119 | /* |
| 120 | * __i2c_transfer() result |
| 121 | */ |
| 122 | TRACE_EVENT_FN(i2c_result, |
| 123 | TP_PROTO(const struct i2c_adapter *adap, int num, int ret), |
| 124 | TP_ARGS(adap, num, ret), |
| 125 | TP_STRUCT__entry( |
| 126 | __field(int, adapter_nr ) |
| 127 | __field(__u16, nr_msgs ) |
| 128 | __field(__s16, ret ) |
| 129 | ), |
| 130 | TP_fast_assign( |
| 131 | __entry->adapter_nr = adap->nr; |
| 132 | __entry->nr_msgs = num; |
| 133 | __entry->ret = ret; |
| 134 | ), |
| 135 | TP_printk("i2c-%d n=%u ret=%d", |
| 136 | __entry->adapter_nr, |
| 137 | __entry->nr_msgs, |
| 138 | __entry->ret |
| 139 | ), |
| 140 | i2c_transfer_trace_reg, |
| 141 | i2c_transfer_trace_unreg); |
| 142 | |
| 143 | #endif /* _TRACE_I2C_H */ |
| 144 | |
| 145 | /* This part must be outside protection */ |
| 146 | #include <trace/define_trace.h> |