include/trace/events/smbus.h

Source file repositories/reference/linux-study-clean/include/trace/events/smbus.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/smbus.h
Extension
.h
Size
7508 bytes
Lines
246
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (protocol) {
		case I2C_SMBUS_BYTE_DATA:
			__entry->len = 1;
			goto copy;
		case I2C_SMBUS_WORD_DATA:
		case I2C_SMBUS_PROC_CALL:
			__entry->len = 2;
			goto copy;
		case I2C_SMBUS_BLOCK_DATA:
		case I2C_SMBUS_BLOCK_PROC_CALL:
		case I2C_SMBUS_I2C_BLOCK_DATA:
			__entry->len = data->block[0] + 1;
		copy:
			memcpy(__entry->buf, data->block, __entry->len);
			break;
		case I2C_SMBUS_QUICK:
		case I2C_SMBUS_BYTE:
		case I2C_SMBUS_I2C_BLOCK_BROKEN:
		default:
			__entry->len = 0;
		}
		       ),
	TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
		  __entry->adapter_nr,
		  __entry->addr,
		  __entry->flags,
		  __entry->command,
		  __print_symbolic(__entry->protocol,
				   { I2C_SMBUS_QUICK,		"QUICK"	},
				   { I2C_SMBUS_BYTE,		"BYTE"	},
				   { I2C_SMBUS_BYTE_DATA,		"BYTE_DATA" },
				   { I2C_SMBUS_WORD_DATA,		"WORD_DATA" },
				   { I2C_SMBUS_PROC_CALL,		"PROC_CALL" },
				   { I2C_SMBUS_BLOCK_DATA,		"BLOCK_DATA" },
				   { I2C_SMBUS_I2C_BLOCK_BROKEN,	"I2C_BLOCK_BROKEN" },
				   { I2C_SMBUS_BLOCK_PROC_CALL,	"BLOCK_PROC_CALL" },
				   { I2C_SMBUS_I2C_BLOCK_DATA,	"I2C_BLOCK_DATA" }),
		  __entry->len,
		  __entry->len, __entry->buf
		  ));

/*
 * i2c_smbus_xfer() read data request
 */
TRACE_EVENT_CONDITION(smbus_read,
	TP_PROTO(const struct i2c_adapter *adap,
		 u16 addr, unsigned short flags,
		 char read_write, u8 command, int protocol),
	TP_ARGS(adap, addr, flags, read_write, command, protocol),
	TP_CONDITION(!(read_write == I2C_SMBUS_WRITE ||
		       protocol == I2C_SMBUS_PROC_CALL ||
		       protocol == I2C_SMBUS_BLOCK_PROC_CALL)),
	TP_STRUCT__entry(
		__field(int,	adapter_nr		)
		__field(__u16,	flags			)
		__field(__u16,	addr			)
		__field(__u8,	command			)
		__field(__u32,	protocol		)
		__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2)	),
	TP_fast_assign(
		__entry->adapter_nr = adap->nr;
		__entry->addr = addr;
		__entry->flags = flags;
		__entry->command = command;
		__entry->protocol = protocol;
		       ),
	TP_printk("i2c-%d a=%03x f=%04x c=%x %s",
		  __entry->adapter_nr,
		  __entry->addr,
		  __entry->flags,
		  __entry->command,
		  __print_symbolic(__entry->protocol,
				   { I2C_SMBUS_QUICK,		"QUICK"	},
				   { I2C_SMBUS_BYTE,		"BYTE"	},
				   { I2C_SMBUS_BYTE_DATA,		"BYTE_DATA" },
				   { I2C_SMBUS_WORD_DATA,		"WORD_DATA" },
				   { I2C_SMBUS_PROC_CALL,		"PROC_CALL" },
				   { I2C_SMBUS_BLOCK_DATA,		"BLOCK_DATA" },
				   { I2C_SMBUS_I2C_BLOCK_BROKEN,	"I2C_BLOCK_BROKEN" },
				   { I2C_SMBUS_BLOCK_PROC_CALL,	"BLOCK_PROC_CALL" },
				   { I2C_SMBUS_I2C_BLOCK_DATA,	"I2C_BLOCK_DATA" })
		  ));

/*
 * i2c_smbus_xfer() read data or procedure call reply
 */
TRACE_EVENT_CONDITION(smbus_reply,
	TP_PROTO(const struct i2c_adapter *adap,
		 u16 addr, unsigned short flags,
		 char read_write, u8 command, int protocol,

Annotation

Implementation Notes